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* [Bug libc/17087] New: Implement memcasemem()
@ 2014-06-25 15:19 kenatmit at gmail dot com
2014-06-25 16:40 ` [Bug libc/17087] " neleai at seznam dot cz
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: kenatmit at gmail dot com @ 2014-06-25 15:19 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=17087
Bug ID: 17087
Summary: Implement memcasemem()
Product: glibc
Version: unspecified
Status: NEW
Severity: enhancement
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: kenatmit at gmail dot com
CC: drepper.fsp at gmail dot com
The of function strstr() has the case-insensitive version strcasestr(), but
memmem() does not have the case-insensitive version memcasemem().
The memcasemem() version would be useful for optimizing some programs. For
example Suricata intrustion prevetion and detection code.
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* Re: [Bug libc/17087] New: Implement memcasemem()
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
2014-06-25 16:40 ` [Bug libc/17087] " neleai at seznam dot cz
@ 2014-06-25 16:40 ` Ondřej Bílka
2014-06-25 18:30 ` [Bug libc/17087] " kenatmit at gmail dot com
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Ondřej Bílka @ 2014-06-25 16:40 UTC (permalink / raw)
To: kenatmit at gmail dot com; +Cc: glibc-bugs
On Wed, Jun 25, 2014 at 03:19:01PM +0000, kenatmit at gmail dot com wrote:
>
> The of function strstr() has the case-insensitive version strcasestr(), but
> memmem() does not have the case-insensitive version memcasemem().
>
> The memcasemem() version would be useful for optimizing some programs. For
> example Suricata intrustion prevetion and detection code.
>
That would not help as optimization, a case conversion is more expensive
than detecting end condition and in vectorized implementations it is
faster to detect terminating null than add special casing if detected
byte was before or after end.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libc/17087] Implement memcasemem()
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
@ 2014-06-25 16:40 ` neleai at seznam dot cz
2014-06-25 16:40 ` [Bug libc/17087] New: " Ondřej Bílka
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: neleai at seznam dot cz @ 2014-06-25 16:40 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=17087
--- Comment #1 from Ondrej Bilka <neleai at seznam dot cz> ---
On Wed, Jun 25, 2014 at 03:19:01PM +0000, kenatmit at gmail dot com wrote:
>
> The of function strstr() has the case-insensitive version strcasestr(), but
> memmem() does not have the case-insensitive version memcasemem().
>
> The memcasemem() version would be useful for optimizing some programs. For
> example Suricata intrustion prevetion and detection code.
>
That would not help as optimization, a case conversion is more expensive
than detecting end condition and in vectorized implementations it is
faster to detect terminating null than add special casing if detected
byte was before or after end.
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* [Bug libc/17087] Implement memcasemem()
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
2014-06-25 16:40 ` [Bug libc/17087] " neleai at seznam dot cz
2014-06-25 16:40 ` [Bug libc/17087] New: " Ondřej Bílka
@ 2014-06-25 18:30 ` kenatmit at gmail dot com
2014-06-26 8:38 ` fweimer at redhat dot com
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: kenatmit at gmail dot com @ 2014-06-25 18:30 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=17087
--- Comment #2 from Ken at MIT <kenatmit at gmail dot com> ---
The case conversion can be implemented in SIMD instructions and take less
than one instruction per byte. The same that can be done in strcasestr().
Detecting if a detected byte was after the end can be done using count
leading zeros, a shift and a mask. This is also possible/required in
memmem().
The strcasestr() function can not be used in place of memcasemem() as that
would require adding NULL terminations to both the needle and the haystack,
which is not always possible.
On Wed, Jun 25, 2014 at 12:40 PM, neleai at seznam dot cz <
sourceware-bugzilla@sourceware.org> wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=17087
>
> --- Comment #1 from Ondrej Bilka <neleai at seznam dot cz> ---
> On Wed, Jun 25, 2014 at 03:19:01PM +0000, kenatmit at gmail dot com wrote:
> >
> > The of function strstr() has the case-insensitive version strcasestr(),
> but
> > memmem() does not have the case-insensitive version memcasemem().
> >
> > The memcasemem() version would be useful for optimizing some programs.
> For
> > example Suricata intrustion prevetion and detection code.
> >
> That would not help as optimization, a case conversion is more expensive
> than detecting end condition and in vectorized implementations it is
> faster to detect terminating null than add special casing if detected
> byte was before or after end.
>
> --
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> You reported the bug.
>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug libc/17087] Implement memcasemem()
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
` (2 preceding siblings ...)
2014-06-25 18:30 ` [Bug libc/17087] " kenatmit at gmail dot com
@ 2014-06-26 8:38 ` fweimer at redhat dot com
2015-08-27 22:22 ` [Bug string/17087] " jsm28 at gcc dot gnu.org
2016-10-24 17:55 ` joseph at codesourcery dot com
5 siblings, 0 replies; 7+ messages in thread
From: fweimer at redhat dot com @ 2014-06-26 8:38 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=17087
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
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* [Bug string/17087] Implement memcasemem()
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
` (3 preceding siblings ...)
2014-06-26 8:38 ` fweimer at redhat dot com
@ 2015-08-27 22:22 ` jsm28 at gcc dot gnu.org
2016-10-24 17:55 ` joseph at codesourcery dot com
5 siblings, 0 replies; 7+ messages in thread
From: jsm28 at gcc dot gnu.org @ 2015-08-27 22:22 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=17087
Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|libc |string
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* [Bug string/17087] Implement memcasemem()
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
` (4 preceding siblings ...)
2015-08-27 22:22 ` [Bug string/17087] " jsm28 at gcc dot gnu.org
@ 2016-10-24 17:55 ` joseph at codesourcery dot com
5 siblings, 0 replies; 7+ messages in thread
From: joseph at codesourcery dot com @ 2016-10-24 17:55 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=17087
--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
My point is that you seem to have taken some text I once wrote about one
such feature request in Bugzilla and cut-and-pasted it in a different
issue to which it does not apply. When asking someone to start a
discussion on libc-alpha, it's nonsensical to request that they include a
synthesis of previous libc-alpha discussions if there were no such
relevant discussions.
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>From glibc-bugs-return-34882-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 24 17:58:31 2016
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/17087] Implement memcasemem()
Date: Mon, 24 Oct 2016 17:58:00 -0000
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--- Comment #7 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Right, I see your point now I apologize for using your other bug response. In
this specific case, should we reopen the bug and ask for a follow up in
maillist?
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>From glibc-bugs-return-34883-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 24 18:09:22 2016
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/17087] Implement memcasemem()
Date: Mon, 24 Oct 2016 18:09:00 -0000
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--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I don't see the use in having bugs open for feature requests lacking
consensus. More speculative ideas can go at
<https://sourceware.org/glibc/wiki/Development_Todo/Master> (preferably
making clear that consensus would need to be established) in the absence
of someone actively working on building consensus and then on an
implementation. That page can point to prior discussions where any exist.
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>From glibc-bugs-return-34884-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 24 18:29:22 2016
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Subject: [Bug nptl/20719] glibc: canceled pthread_cond_wait invokes wrong internal cleanup handler, leading to OOB write
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
This was accepted as a GCC bug and fixed there. No action on the glibc is
needed.
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>From glibc-bugs-return-34885-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 24 19:51:50 2016
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From: "andrew.n.senkevich at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/20539] GCC 7 -static -lm fails to link at -O3
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--- Comment #8 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
(In reply to rlcamp.pdx from comment #7)
> This bug is not limited to GCC 7. It manifests in the released version of
> Ubuntu 16.10 (with gcc 6.2.0) and also in the Debian-testing (stretch, with
> GCC 6.1.0).
Yes, I know, it is mentioned description of patch
(https://sourceware.org/ml/libc-alpha/2016-10/msg00342.html)
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Subject: [Bug string/19390] Integer overflow in strncat
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--- Comment #8 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
*** Bug 17279 has been marked as a duplicate of this bug. ***
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Subject: [Bug string/17279] strncat(..., ..., SIZE_MAX) behaves incorrectly
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https://sourceware.org/bugzilla/show_bug.cgi?id=17279
Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |adhemerval.zanella at linaro dot o
| |rg
Resolution|--- |DUPLICATE
--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Marking as duplicate of BZ#19390.
*** This bug has been marked as a duplicate of bug 19390 ***
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>From glibc-bugs-return-34888-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 25 12:34:41 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20004] swapcontext for powerpc64 has an instruction missing
Date: Tue, 25 Oct 2016 12:34:00 -0000
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Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |tuliom at linux dot vnet.ibm.com
Resolution|--- |FIXED
Target Milestone|--- |2.24
--- Comment #4 from Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> ---
This issue has already been fixed in glibc 2.24.
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>From glibc-bugs-return-34889-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 25 19:14:25 2016
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From: "acsawdey at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/20736] New: string2.h strcmp macro gratuitously adds __builtin_
Date: Tue, 25 Oct 2016 19:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20736
Bug ID: 20736
Summary: string2.h strcmp macro gratuitously adds __builtin_
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: acsawdey at gcc dot gnu.org
CC: sjmunroe at us dot ibm.com
Target Milestone: ---
In string/bits/string2.h the macro defined for strcmp(s1, s2) expands to calls
to __builtin_strcmp. The analogous macro for strncmp expands to calls to
strncmp.
This becomes an issue if the user specifies -fno-builtin-strcmp to gcc which
now does not work because the macro has transformed strcmp to __builtin_strcmp.
The behavior with gcc is as expected with strncmp and also (for example)
memcmp.
Actually since strncmp calls strcmp instead if one arg is a const string
shorter than n, in that case the user's attempt to disable builtin expansion
will also not work.
If strcmp expanded in terms of strcmp not __builtin_strcmp, this could be
avoided.
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>From glibc-bugs-return-34890-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 11:04:46 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
Date: Wed, 26 Oct 2016 11:04:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9591|0 |1
is obsolete| |
--- Comment #14 from Florian Weimer <fweimer at redhat dot com> ---
Created attachment 9592
--> https://sourceware.org/bugzilla/attachment.cgi?id=9592&action=edit
fomit-frame-pointer.patch
Please try this patch (against master).
Note that the resulting libc is far from ABI-compliant. This needs further
changes.
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>From glibc-bugs-return-34891-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 11:29:42 2016
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Subject: [Bug malloc/19473] Turn malloc_get_state etc. in compatibility symbols
Date: Wed, 26 Oct 2016 11:29:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via e863cce57bff6cb795e6aad745ddf6235bca21ce (commit)
from 261e6758e7229aa4c17546b52b002ca9f1b0a67d (commit)
Those revisions listed above that are new to this repository have
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e863cce57bff6cb795e6aad745ddf6235bca21ce
commit e863cce57bff6cb795e6aad745ddf6235bca21ce
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Oct 26 13:28:28 2016 +0200
malloc: Remove malloc_get_state, malloc_set_state [BZ #19473]
After the removal of __malloc_initialize_hook, newly compiled
Emacs binaries are no longer able to use these interfaces.
malloc_get_state is only used during the Emacs build process,
so we provide a stub implementation only. Existing Emacs binaries
will not call this stub function, but still reference the symbol.
The rewritten tst-mallocstate test constructs a dumped heap
which should approximates what existing Emacs binaries pass
to glibc malloc.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 16 ++
NEWS | 8 +
malloc/Makefile | 3 +
malloc/hooks.c | 63 ++-----
malloc/malloc.c | 2 -
malloc/malloc.h | 7 -
malloc/tst-mallocstate.c | 505 ++++++++++++++++++++++++++++++++++++++++++----
7 files changed, 504 insertions(+), 100 deletions(-)
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>From glibc-bugs-return-34893-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 11:30:46 2016
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Subject: [Bug malloc/6527] [powerpc] Malloc alignment insufficient for PowerPC
Date: Wed, 26 Oct 2016 11:30:00 -0000
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Bug 6527 depends on bug 19473, which changed state.
Bug 19473 Summary: Turn malloc_get_state etc. in compatibility symbols
https://sourceware.org/bugzilla/show_bug.cgi?id=19473
What |Removed |Added
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Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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>From glibc-bugs-return-34892-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 11:30:35 2016
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Subject: [Bug malloc/19473] Turn malloc_get_state etc. in compatibility symbols
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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>From glibc-bugs-return-34894-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 12:24:46 2016
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Subject: [Bug malloc/18654] mcheck should warn if threads exist
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CC| |fweimer at redhat dot com
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>From glibc-bugs-return-34895-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 18:05:09 2016
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Subject: [Bug malloc/20155] malloc: Inconsistent chunk size checks
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>From glibc-bugs-return-34896-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 26 18:49:30 2016
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Subject: [Bug manual/20424] Document how to provide a malloc replacement
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>From glibc-bugs-return-34897-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 08:57:51 2016
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From: "nszabolcs at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nptl/19303] nptl/tst-cancel24-static fails on arm, mips and hppa
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--- Comment #2 from Szabolcs Nagy <nszabolcs at gmail dot com> ---
i think the fix for bug 19826 fixed this too.
(__cxa_begin_catch calls __cxa_get_globals which returns a pointer to tls, and
most likely that had an uninitialized dtv entry.)
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>From glibc-bugs-return-34898-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 10:28:49 2016
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>From glibc-bugs-return-34899-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 14:02:45 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug string/20736] string2.h strcmp macro gratuitously adds __builtin_
Date: Thu, 27 Oct 2016 14:02:00 -0000
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
The use of -fno-builtin-strcmp _does_ work, but just not in all the cases you
wanted. This is true of many such compiler options, particularly where the
implementation has made a choice for you. If strcmp internally just called
__builtin_strcmp you'd have no control over that, and it would be functionally
equivalent. It's only because of performance reasons that you see that choice
exposed in the strcmp macro, and may have some control over the ultimate
implementation used by your program. However, I think such choice is not
guaranteed.
In general the C library and the compiler come together to form a singular
implementation of the C runtime, and while options like -fno-builtin-strcmp let
you control some aspects of that runtime, other choices are made for you by the
library developers to improve performance in the average case.
For example on x86 strncmp is implemented in terms of strcmp (not strncmp) and
therefore you have to know something about the details of the implementation to
use say -fno-builtin-strcmp even though you were calling strncmp.
In summary I don't think it is correct to have an expectation that strcmp
evaluates to anything but a function call to a library routine, or that
-fno-builtin-strcmp will have any effect there.
Exactly what use case do you have for needing the kind of control you're asking
for?
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>From glibc-bugs-return-34900-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 16:02:23 2016
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Subject: [Bug string/20736] string2.h strcmp macro gratuitously adds __builtin_
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>From glibc-bugs-return-34901-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 16:20:42 2016
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From: "acsawdey at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/20736] string2.h strcmp macro gratuitously adds __builtin_
Date: Thu, 27 Oct 2016 16:20:00 -0000
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--- Comment #2 from Aaron Sawdey <acsawdey at gcc dot gnu.org> ---
I opened this bug because of the asymmetry between strncmp's macro that just
expands in terms of strncmp, and the strcmp macro that expands to
__builtin_strcmp. I can live with having to have a more complex workaround if I
want to disable the expansion of __builtin_strcmp that I'm adding to gcc.
The questions I suppose I was trying to ask are: why is there a difference
between what these two macros do in this regard? Why does the strcmp macro feel
it cannot leave the decision of what to do with the strcmp function call up to
the compiler (i.e. expand builtin or don't)?
If the answer is that the status quo is ok, I can live with that.
Thanks,
Aaron
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>From glibc-bugs-return-34902-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 17:23:03 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/20736] string2.h strcmp macro gratuitously adds __builtin_
Date: Thu, 27 Oct 2016 17:23:00 -0000
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--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Aaron Sawdey from comment #2)
> I opened this bug because of the asymmetry between strncmp's macro that just
> expands in terms of strncmp, and the strcmp macro that expands to
> __builtin_strcmp. I can live with having to have a more complex workaround
> if I want to disable the expansion of __builtin_strcmp that I'm adding to
> gcc.
>
> The questions I suppose I was trying to ask are: why is there a difference
> between what these two macros do in this regard? Why does the strcmp macro
> feel it cannot leave the decision of what to do with the strcmp function
> call up to the compiler (i.e. expand builtin or don't)?
>
> If the answer is that the status quo is ok, I can live with that.
You have no guarantee of any symmetry in terms of the function implementation.
If I understand your particular case you just want to disable the use of
__builtin_strcmp from code compiled with gcc? That's just not possible for
glibc which is part of the implementation and may rely on all features the the
GNU C compiler.
To answer your other question, why __builtin_strcmp? Because the
microbenchmarks say it's faster in the mean for the machines using the generic
macro implementation. There is no other metric except for expert opinion and
the microbenchmarks in benchtests/ e.g. make bench. Keep in mind that we don't
enable these optimizations for all compilations, the compiler must be new
enough, we must know optimizations were requested, the optimization must not be
for size, we must know inlining is allowed, and it should not be C++.
If you have other opinions I'm happy to hear them, and you can run the
microbenchmarks yourself to determine an objective position on the matter;
which is the purpose of the benchmarks.
Note that for x86 the strcmp implementation does not use __builtin_strcmp at
all, only the generic version does.
Does that answer your question?
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>From glibc-bugs-return-34903-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 17:30:44 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug string/20736] powerpc: string2.h strcmp macro gratuitously adds __builtin_
Date: Thu, 27 Oct 2016 17:30:00 -0000
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Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc*
Summary|string2.h strcmp macro |powerpc: string2.h strcmp
|gratuitously adds |macro gratuitously adds
|__builtin_ |__builtin_
--- Comment #4 from Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> ---
I believe this is specific to powerpc*.
Aaron, can you confirm this?
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>From glibc-bugs-return-34904-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 18:51:48 2016
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From: "acsawdey at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/20736] powerpc: string2.h strcmp macro gratuitously adds __builtin_
Date: Thu, 27 Oct 2016 18:51:00 -0000
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--- Comment #5 from Aaron Sawdey <acsawdey at gcc dot gnu.org> ---
Tulio,
Yes this is specific to powerpc because I am adding gcc builtin expansion of
strncmp/strcmp. When I did the same thing for memcmp I was able to test the
builtin expansion vs the base case by turning it off with -fno-builtin-memcmp.
Ultimately it doesn't matter if this changes and it sounds like it won't. "The
code looks nicer" carries little weight vs performance numbers as you say.
The thing that I will want do do (but not via this BZ) is to get some of this
macro expansion trickery out of the way because gcc's expansion can generate a
whole lot better code especially when gcc knows the alignment of the string
pointers due to analysis. But this can be done via
_HAVE_STRING_ARCH_strcmp/strncmp in sysdeps/powerpc/bits/string.h.
I think this answers the question and this bug can be closed.
Thanks,
Aaron
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>From glibc-bugs-return-34905-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 20:03:15 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug string/20736] powerpc: string2.h strcmp macro gratuitously adds __builtin_
Date: Thu, 27 Oct 2016 20:03:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |WONTFIX
--- Comment #6 from Carlos O'Donell <carlos at redhat dot com> ---
Aaron,
Glad we could answer your questions. I'm marking this RESOLVED/WONTFIX since we
won't be changing the headers.
Cheers,
Carlos.
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>From glibc-bugs-return-34906-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 20:13:19 2016
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
Date: Thu, 27 Oct 2016 20:13:00 -0000
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--- Comment #15 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #14)
> Created attachment 9592 [details]
> fomit-frame-pointer.patch
>
> Please try this patch (against master).
>
> Note that the resulting libc is far from ABI-compliant. This needs further
> changes.
"error: ChangeLog not modified in patch"
Bad patch.
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>From glibc-bugs-return-34907-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 20:19:32 2016
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #16 from Florian Weimer <fweimer at redhat dot com> ---
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bug20279.patch
Sorry, please try this patch instead.
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>From glibc-bugs-return-34908-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 27 20:32:03 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/20728] powerpc: Missing TOC stub in clone
Date: Thu, 27 Oct 2016 20:32:00 -0000
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CC| |carlos at redhat dot com
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Tulio Magno Quites Machado Filho from comment #0)
> Error message generated by the linker:
>
> ld: lib/libc.a(clone.o): In function `__clone':
> glibc-2.17/misc/../sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S:119:(.
> text+0x98): call to `__wrap__exit' lacks nop, can't restore toc;
> (-mcmodel=small toc adjust stub)
> ld: final link failed: Bad value
>
> Which is related to the following code:
>
> /* Call _exit with result from procedure. */
> #ifdef SHARED
> b JUMPTARGET(__GI__exit)
> #else
> b JUMPTARGET(_exit)
> /* We won't ever get here but provide a nop so that the linker
> will insert a toc adjusting stub if necessary. */
> nop
> #endif
>
> Older ppc64 linkers were able to generate a TOC stub after a branch + nop.
> Current linkers require a branch and link + nop.
Can you just add a nop to the SHARED case?
Alternatively you could require a newer assembler for ppc64, but that's not
very nice for users bootstrapping.
How do you plan to fix this?
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #65 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9595
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Proposed solution: support alternative month names (version 4)
Here goes a new set of patches. Some are skipped in this set because they have
not been changed.
The difference between the version from comment 53 and this one: this patch
does not add anything to conform/data/langinfo.h-data, as requested in
https://sourceware.org/ml/libc-alpha/2016-10/msg00303.html
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #66 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9596
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Provide backward compatibility for nl_langinfo family (version 4)
This patch, compared to the one from comment 54, provides backward
compatibility not only to nl_langinfo() and nl_langinfo_l() but also to
__nl_langinfo_l(), as requested in comment 58.
Note: the patch description says "(version 4)" only for the consistency with
other v4 patches.
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #67 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9597
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Rebuild abilists to reflect nl_langinfo changes (version 4)
Same changes as above, also this patch is rebased against the current master.
--------
SKIPPED PATCHES:
* Patch 0004 could go here, skipped because it is the same as in comment 56.
* Patch 0005 could go here, skipped because it is the same as in comment 57.
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Fri, 28 Oct 2016 00:01:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9574|0 |1
is obsolete| |
--- Comment #68 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9598
--> https://sourceware.org/bugzilla/attachment.cgi?id=9598&action=edit
Provide backward compatibility for strftime family (version 4)
This patch, compared to the one from comment 59, provides backward
compatibility not only to strftime(), strftime_l(), wcsftime(), and
wcsftime_l() but also to __strftime_l() and __wcsftime_l(), as requested in
https://sourceware.org/ml/libc-alpha/2016-10/msg00304.html
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Fri, 28 Oct 2016 00:09:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9575|0 |1
is obsolete| |
--- Comment #69 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9599
--> https://sourceware.org/bugzilla/attachment.cgi?id=9599&action=edit
Rebuild abilists to reflect strftime family changes (version 4)
Same changes as above, also this patch is rebased against the current master.
--------
SKIPPED PATCHES:
0008 (Polish) - same as in commment 61
0009 (Russian) - same as in commment 62
0010 (Ukrainian) - same as in commment 63
0011 (Czech) - same as in commment 64
Also note that those patches only provide the test data, they are not intended
to be committed (although I don't mind if you decide so.)
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>From glibc-bugs-return-34914-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 00:41:48 2016
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/19380] strtod does not raise "inexact"
Date: Fri, 28 Oct 2016 00:41:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4725d33eed118d69b8110285f7741cde9ddc8b4f
commit 4725d33eed118d69b8110285f7741cde9ddc8b4f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Oct 28 00:40:23 2016 +0000
Make strtod raise "inexact" exceptions (bug 19380).
The strtod function should raise the "inexact" exception when its
result is inexact, but fails to do so except in the case of underflow
or overflow. This patch fixes it to do so for all inexact results.
tst-strtod-round is extended to test for this exception; the generator
is fixed to properly mark inexact results as such in the case where
the inexactness is from the mpfr_subnormalize step.
Tested for x86_64, x86 and powerpc.
[BZ #19380]
* stdlib/strtod_l.c (round_and_return): Force "inexact" exception
for inexact results.
* stdlib/gen-tst-strtod-round.c (string_to_fp): Return indication
of inexact result where mpfr_subnormalize is the only inexact
step.
* stdlib/tst-strtod-round-data.h: Regenerated.
* stdlib/tst-strtod-round-skeleton.c [!FE_INEXACT] (FE_INEXACT):
Define to 0.
(GEN_ONE_TEST): Test inexact exceptions raised are as expected.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 13 +++++++++++++
stdlib/gen-tst-strtod-round.c | 4 ++--
stdlib/strtod_l.c | 14 +++++++++++---
stdlib/tst-strtod-round-data.h | 26 +++++++++++++-------------
stdlib/tst-strtod-round-skeleton.c | 18 ++++++++++++++++++
5 files changed, 57 insertions(+), 18 deletions(-)
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>From glibc-bugs-return-34915-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 00:42:15 2016
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Subject: [Bug math/19380] strtod does not raise "inexact"
Date: Fri, 28 Oct 2016 00:42:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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>From glibc-bugs-return-34916-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 03:48:14 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
Date: Fri, 28 Oct 2016 03:46:00 -0000
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--- Comment #17 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #16)
> Created attachment 9594 [details]
> bug20279.patch
>
> Sorry, please try this patch instead.
This patch fixes the build failures for me with i486 and -Os.
I have a distinct patch to fix the -Werror failures related to -Os, which I'll
post tomorrow. Though it's questionable if we should even pursue this given the
serious ABI breakage I see in the test results e.g. extra PLT entries, and
calls to functions outside of the associated namespace.
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>From glibc-bugs-return-34917-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 03:51:07 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
Date: Fri, 28 Oct 2016 03:51:00 -0000
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--- Comment #18 from Carlos O'Donell <carlos at redhat dot com> ---
For reference:
i486 -Os
FAIL: conform/ISO/assert.h/linknamespace
FAIL: conform/ISO/locale.h/linknamespace
FAIL: conform/ISO/math.h/linknamespace
FAIL: conform/ISO/signal.h/linknamespace
FAIL: conform/ISO/stdio.h/linknamespace
FAIL: conform/ISO/stdlib.h/linknamespace
FAIL: conform/ISO/string.h/linknamespace
FAIL: conform/ISO/time.h/linknamespace
FAIL: conform/ISO11/assert.h/linknamespace
FAIL: conform/ISO11/complex.h/linknamespace
FAIL: conform/ISO11/fenv.h/linknamespace
FAIL: conform/ISO11/locale.h/linknamespace
FAIL: conform/ISO11/math.h/linknamespace
FAIL: conform/ISO11/signal.h/linknamespace
FAIL: conform/ISO11/stdio.h/linknamespace
FAIL: conform/ISO11/stdlib.h/linknamespace
FAIL: conform/ISO11/string.h/linknamespace
FAIL: conform/ISO11/tgmath.h/linknamespace
FAIL: conform/ISO11/time.h/linknamespace
FAIL: conform/ISO11/uchar.h/linknamespace
FAIL: conform/ISO11/wchar.h/linknamespace
FAIL: conform/ISO99/assert.h/linknamespace
FAIL: conform/ISO99/complex.h/linknamespace
FAIL: conform/ISO99/fenv.h/linknamespace
FAIL: conform/ISO99/locale.h/linknamespace
FAIL: conform/ISO99/math.h/linknamespace
FAIL: conform/ISO99/signal.h/linknamespace
FAIL: conform/ISO99/stdio.h/linknamespace
FAIL: conform/ISO99/stdlib.h/linknamespace
FAIL: conform/ISO99/string.h/linknamespace
FAIL: conform/ISO99/tgmath.h/linknamespace
FAIL: conform/ISO99/time.h/linknamespace
FAIL: conform/ISO99/wchar.h/linknamespace
FAIL: conform/POSIX/aio.h/linknamespace
FAIL: conform/POSIX/assert.h/linknamespace
FAIL: conform/POSIX/dirent.h/linknamespace
FAIL: conform/POSIX/fcntl.h/linknamespace
FAIL: conform/POSIX/fnmatch.h/linknamespace
FAIL: conform/POSIX/glob.h/linknamespace
FAIL: conform/POSIX/grp.h/linknamespace
FAIL: conform/POSIX/locale.h/linknamespace
FAIL: conform/POSIX/math.h/linknamespace
FAIL: conform/POSIX/mqueue.h/linknamespace
FAIL: conform/POSIX/pthread.h/linknamespace
FAIL: conform/POSIX/pwd.h/linknamespace
FAIL: conform/POSIX/regex.h/linknamespace
FAIL: conform/POSIX/sched.h/linknamespace
FAIL: conform/POSIX/semaphore.h/linknamespace
FAIL: conform/POSIX/signal.h/linknamespace
FAIL: conform/POSIX/stdio.h/linknamespace
FAIL: conform/POSIX/stdlib.h/linknamespace
FAIL: conform/POSIX/string.h/linknamespace
FAIL: conform/POSIX/sys/mman.h/linknamespace
FAIL: conform/POSIX/sys/wait.h/linknamespace
FAIL: conform/POSIX/termios.h/linknamespace
FAIL: conform/POSIX/time.h/linknamespace
FAIL: conform/POSIX/unistd.h/linknamespace
FAIL: conform/POSIX/wordexp.h/linknamespace
FAIL: conform/POSIX2008/aio.h/linknamespace
FAIL: conform/POSIX2008/arpa/inet.h/linknamespace
FAIL: conform/POSIX2008/assert.h/linknamespace
FAIL: conform/POSIX2008/complex.h/linknamespace
FAIL: conform/POSIX2008/dirent.h/linknamespace
FAIL: conform/POSIX2008/fcntl.h/linknamespace
FAIL: conform/POSIX2008/fenv.h/linknamespace
FAIL: conform/POSIX2008/fnmatch.h/linknamespace
FAIL: conform/POSIX2008/glob.h/linknamespace
FAIL: conform/POSIX2008/grp.h/linknamespace
FAIL: conform/POSIX2008/iconv.h/linknamespace
FAIL: conform/POSIX2008/langinfo.h/linknamespace
FAIL: conform/POSIX2008/locale.h/linknamespace
FAIL: conform/POSIX2008/math.h/linknamespace
FAIL: conform/POSIX2008/monetary.h/linknamespace
FAIL: conform/POSIX2008/mqueue.h/linknamespace
FAIL: conform/POSIX2008/net/if.h/linknamespace
FAIL: conform/POSIX2008/netdb.h/linknamespace
FAIL: conform/POSIX2008/netinet/in.h/linknamespace
FAIL: conform/POSIX2008/nl_types.h/linknamespace
FAIL: conform/POSIX2008/poll.h/linknamespace
FAIL: conform/POSIX2008/pthread.h/linknamespace
FAIL: conform/POSIX2008/pwd.h/linknamespace
FAIL: conform/POSIX2008/regex.h/linknamespace
FAIL: conform/POSIX2008/sched.h/linknamespace
FAIL: conform/POSIX2008/semaphore.h/linknamespace
FAIL: conform/POSIX2008/signal.h/linknamespace
FAIL: conform/POSIX2008/spawn.h/linknamespace
FAIL: conform/POSIX2008/stdio.h/linknamespace
FAIL: conform/POSIX2008/stdlib.h/linknamespace
FAIL: conform/POSIX2008/string.h/linknamespace
FAIL: conform/POSIX2008/stropts.h/linknamespace
FAIL: conform/POSIX2008/sys/mman.h/linknamespace
FAIL: conform/POSIX2008/sys/select.h/linknamespace
FAIL: conform/POSIX2008/sys/socket.h/linknamespace
FAIL: conform/POSIX2008/sys/statvfs.h/linknamespace
FAIL: conform/POSIX2008/sys/wait.h/linknamespace
FAIL: conform/POSIX2008/termios.h/linknamespace
FAIL: conform/POSIX2008/tgmath.h/linknamespace
FAIL: conform/POSIX2008/time.h/linknamespace
FAIL: conform/POSIX2008/unistd.h/linknamespace
FAIL: conform/POSIX2008/wchar.h/linknamespace
FAIL: conform/POSIX2008/wordexp.h/linknamespace
FAIL: conform/UNIX98/aio.h/linknamespace
FAIL: conform/UNIX98/arpa/inet.h/linknamespace
FAIL: conform/UNIX98/assert.h/linknamespace
FAIL: conform/UNIX98/dirent.h/linknamespace
FAIL: conform/UNIX98/fcntl.h/linknamespace
FAIL: conform/UNIX98/fmtmsg.h/linknamespace
FAIL: conform/UNIX98/fnmatch.h/linknamespace
FAIL: conform/UNIX98/ftw.h/linknamespace
FAIL: conform/UNIX98/glob.h/linknamespace
FAIL: conform/UNIX98/grp.h/linknamespace
FAIL: conform/UNIX98/iconv.h/linknamespace
FAIL: conform/UNIX98/langinfo.h/linknamespace
FAIL: conform/UNIX98/locale.h/linknamespace
FAIL: conform/UNIX98/math.h/linknamespace
FAIL: conform/UNIX98/monetary.h/linknamespace
FAIL: conform/UNIX98/mqueue.h/linknamespace
FAIL: conform/UNIX98/netdb.h/linknamespace
FAIL: conform/UNIX98/netinet/in.h/linknamespace
FAIL: conform/UNIX98/nl_types.h/linknamespace
FAIL: conform/UNIX98/poll.h/linknamespace
FAIL: conform/UNIX98/pthread.h/linknamespace
FAIL: conform/UNIX98/pwd.h/linknamespace
FAIL: conform/UNIX98/regex.h/linknamespace
FAIL: conform/UNIX98/sched.h/linknamespace
FAIL: conform/UNIX98/search.h/linknamespace
FAIL: conform/UNIX98/semaphore.h/linknamespace
FAIL: conform/UNIX98/signal.h/linknamespace
FAIL: conform/UNIX98/stdio.h/linknamespace
FAIL: conform/UNIX98/stdlib.h/linknamespace
FAIL: conform/UNIX98/string.h/linknamespace
FAIL: conform/UNIX98/stropts.h/linknamespace
FAIL: conform/UNIX98/sys/mman.h/linknamespace
FAIL: conform/UNIX98/sys/msg.h/linknamespace
FAIL: conform/UNIX98/sys/shm.h/linknamespace
FAIL: conform/UNIX98/sys/socket.h/linknamespace
FAIL: conform/UNIX98/sys/statvfs.h/linknamespace
FAIL: conform/UNIX98/sys/time.h/linknamespace
FAIL: conform/UNIX98/sys/uio.h/linknamespace
FAIL: conform/UNIX98/sys/wait.h/linknamespace
FAIL: conform/UNIX98/syslog.h/linknamespace
FAIL: conform/UNIX98/termios.h/linknamespace
FAIL: conform/UNIX98/time.h/linknamespace
FAIL: conform/UNIX98/ucontext.h/linknamespace
FAIL: conform/UNIX98/ulimit.h/linknamespace
FAIL: conform/UNIX98/unistd.h/linknamespace
FAIL: conform/UNIX98/utmpx.h/linknamespace
FAIL: conform/UNIX98/wchar.h/linknamespace
FAIL: conform/UNIX98/wordexp.h/linknamespace
FAIL: conform/XOPEN2K/aio.h/linknamespace
FAIL: conform/XOPEN2K/arpa/inet.h/linknamespace
FAIL: conform/XOPEN2K/assert.h/linknamespace
FAIL: conform/XOPEN2K/complex.h/linknamespace
FAIL: conform/XOPEN2K/dirent.h/linknamespace
FAIL: conform/XOPEN2K/fcntl.h/linknamespace
FAIL: conform/XOPEN2K/fenv.h/linknamespace
FAIL: conform/XOPEN2K/fmtmsg.h/linknamespace
FAIL: conform/XOPEN2K/fnmatch.h/linknamespace
FAIL: conform/XOPEN2K/ftw.h/linknamespace
FAIL: conform/XOPEN2K/glob.h/linknamespace
FAIL: conform/XOPEN2K/grp.h/linknamespace
FAIL: conform/XOPEN2K/iconv.h/linknamespace
FAIL: conform/XOPEN2K/langinfo.h/linknamespace
FAIL: conform/XOPEN2K/locale.h/linknamespace
FAIL: conform/XOPEN2K/math.h/linknamespace
FAIL: conform/XOPEN2K/monetary.h/linknamespace
FAIL: conform/XOPEN2K/mqueue.h/linknamespace
FAIL: conform/XOPEN2K/net/if.h/linknamespace
FAIL: conform/XOPEN2K/netdb.h/linknamespace
FAIL: conform/XOPEN2K/netinet/in.h/linknamespace
FAIL: conform/XOPEN2K/nl_types.h/linknamespace
FAIL: conform/XOPEN2K/poll.h/linknamespace
FAIL: conform/XOPEN2K/pthread.h/linknamespace
FAIL: conform/XOPEN2K/pwd.h/linknamespace
FAIL: conform/XOPEN2K/regex.h/linknamespace
FAIL: conform/XOPEN2K/sched.h/linknamespace
FAIL: conform/XOPEN2K/search.h/linknamespace
FAIL: conform/XOPEN2K/semaphore.h/linknamespace
FAIL: conform/XOPEN2K/signal.h/linknamespace
FAIL: conform/XOPEN2K/spawn.h/linknamespace
FAIL: conform/XOPEN2K/stdio.h/linknamespace
FAIL: conform/XOPEN2K/stdlib.h/linknamespace
FAIL: conform/XOPEN2K/string.h/linknamespace
FAIL: conform/XOPEN2K/stropts.h/linknamespace
FAIL: conform/XOPEN2K/sys/mman.h/linknamespace
FAIL: conform/XOPEN2K/sys/msg.h/linknamespace
FAIL: conform/XOPEN2K/sys/select.h/linknamespace
FAIL: conform/XOPEN2K/sys/shm.h/linknamespace
FAIL: conform/XOPEN2K/sys/socket.h/linknamespace
FAIL: conform/XOPEN2K/sys/statvfs.h/linknamespace
FAIL: conform/XOPEN2K/sys/time.h/linknamespace
FAIL: conform/XOPEN2K/sys/uio.h/linknamespace
FAIL: conform/XOPEN2K/sys/wait.h/linknamespace
FAIL: conform/XOPEN2K/syslog.h/linknamespace
FAIL: conform/XOPEN2K/termios.h/linknamespace
FAIL: conform/XOPEN2K/tgmath.h/linknamespace
FAIL: conform/XOPEN2K/time.h/linknamespace
FAIL: conform/XOPEN2K/ucontext.h/linknamespace
FAIL: conform/XOPEN2K/ulimit.h/linknamespace
FAIL: conform/XOPEN2K/unistd.h/linknamespace
FAIL: conform/XOPEN2K/utmpx.h/linknamespace
FAIL: conform/XOPEN2K/wchar.h/linknamespace
FAIL: conform/XOPEN2K/wordexp.h/linknamespace
FAIL: conform/XOPEN2K8/aio.h/linknamespace
FAIL: conform/XOPEN2K8/arpa/inet.h/linknamespace
FAIL: conform/XOPEN2K8/assert.h/linknamespace
FAIL: conform/XOPEN2K8/complex.h/linknamespace
FAIL: conform/XOPEN2K8/dirent.h/linknamespace
FAIL: conform/XOPEN2K8/fcntl.h/linknamespace
FAIL: conform/XOPEN2K8/fenv.h/linknamespace
FAIL: conform/XOPEN2K8/fmtmsg.h/linknamespace
FAIL: conform/XOPEN2K8/fnmatch.h/linknamespace
FAIL: conform/XOPEN2K8/ftw.h/linknamespace
FAIL: conform/XOPEN2K8/glob.h/linknamespace
FAIL: conform/XOPEN2K8/grp.h/linknamespace
FAIL: conform/XOPEN2K8/iconv.h/linknamespace
FAIL: conform/XOPEN2K8/langinfo.h/linknamespace
FAIL: conform/XOPEN2K8/locale.h/linknamespace
FAIL: conform/XOPEN2K8/math.h/linknamespace
FAIL: conform/XOPEN2K8/monetary.h/linknamespace
FAIL: conform/XOPEN2K8/mqueue.h/linknamespace
FAIL: conform/XOPEN2K8/net/if.h/linknamespace
FAIL: conform/XOPEN2K8/netdb.h/linknamespace
FAIL: conform/XOPEN2K8/netinet/in.h/linknamespace
FAIL: conform/XOPEN2K8/nl_types.h/linknamespace
FAIL: conform/XOPEN2K8/poll.h/linknamespace
FAIL: conform/XOPEN2K8/pthread.h/linknamespace
FAIL: conform/XOPEN2K8/pwd.h/linknamespace
FAIL: conform/XOPEN2K8/regex.h/linknamespace
FAIL: conform/XOPEN2K8/sched.h/linknamespace
FAIL: conform/XOPEN2K8/search.h/linknamespace
FAIL: conform/XOPEN2K8/semaphore.h/linknamespace
FAIL: conform/XOPEN2K8/signal.h/linknamespace
FAIL: conform/XOPEN2K8/spawn.h/linknamespace
FAIL: conform/XOPEN2K8/stdio.h/linknamespace
FAIL: conform/XOPEN2K8/stdlib.h/linknamespace
FAIL: conform/XOPEN2K8/string.h/linknamespace
FAIL: conform/XOPEN2K8/stropts.h/linknamespace
FAIL: conform/XOPEN2K8/sys/mman.h/linknamespace
FAIL: conform/XOPEN2K8/sys/msg.h/linknamespace
FAIL: conform/XOPEN2K8/sys/select.h/linknamespace
FAIL: conform/XOPEN2K8/sys/shm.h/linknamespace
FAIL: conform/XOPEN2K8/sys/socket.h/linknamespace
FAIL: conform/XOPEN2K8/sys/statvfs.h/linknamespace
FAIL: conform/XOPEN2K8/sys/time.h/linknamespace
FAIL: conform/XOPEN2K8/sys/uio.h/linknamespace
FAIL: conform/XOPEN2K8/sys/wait.h/linknamespace
FAIL: conform/XOPEN2K8/syslog.h/linknamespace
FAIL: conform/XOPEN2K8/termios.h/linknamespace
FAIL: conform/XOPEN2K8/tgmath.h/linknamespace
FAIL: conform/XOPEN2K8/time.h/linknamespace
FAIL: conform/XOPEN2K8/ulimit.h/linknamespace
FAIL: conform/XOPEN2K8/unistd.h/linknamespace
FAIL: conform/XOPEN2K8/utmpx.h/linknamespace
FAIL: conform/XOPEN2K8/wchar.h/linknamespace
FAIL: conform/XOPEN2K8/wordexp.h/linknamespace
FAIL: conform/XPG3/assert.h/linknamespace
FAIL: conform/XPG3/dirent.h/linknamespace
FAIL: conform/XPG3/fcntl.h/linknamespace
FAIL: conform/XPG3/fnmatch.h/linknamespace
FAIL: conform/XPG3/ftw.h/linknamespace
FAIL: conform/XPG3/glob.h/linknamespace
FAIL: conform/XPG3/grp.h/linknamespace
FAIL: conform/XPG3/iconv.h/linknamespace
FAIL: conform/XPG3/langinfo.h/linknamespace
FAIL: conform/XPG3/locale.h/linknamespace
FAIL: conform/XPG3/math.h/linknamespace
FAIL: conform/XPG3/monetary.h/linknamespace
FAIL: conform/XPG3/nl_types.h/linknamespace
FAIL: conform/XPG3/pwd.h/linknamespace
FAIL: conform/XPG3/regex.h/linknamespace
FAIL: conform/XPG3/search.h/linknamespace
FAIL: conform/XPG3/signal.h/linknamespace
FAIL: conform/XPG3/stdio.h/linknamespace
FAIL: conform/XPG3/stdlib.h/linknamespace
FAIL: conform/XPG3/string.h/linknamespace
FAIL: conform/XPG3/sys/msg.h/linknamespace
FAIL: conform/XPG3/sys/shm.h/linknamespace
FAIL: conform/XPG3/sys/wait.h/linknamespace
FAIL: conform/XPG3/termios.h/linknamespace
FAIL: conform/XPG3/time.h/linknamespace
FAIL: conform/XPG3/ulimit.h/linknamespace
FAIL: conform/XPG3/unistd.h/linknamespace
FAIL: conform/XPG3/wordexp.h/linknamespace
FAIL: conform/XPG4/arpa/inet.h/linknamespace
FAIL: conform/XPG4/assert.h/linknamespace
FAIL: conform/XPG4/dirent.h/linknamespace
FAIL: conform/XPG4/fcntl.h/linknamespace
FAIL: conform/XPG4/fmtmsg.h/linknamespace
FAIL: conform/XPG4/fnmatch.h/linknamespace
FAIL: conform/XPG4/ftw.h/linknamespace
FAIL: conform/XPG4/glob.h/linknamespace
FAIL: conform/XPG4/grp.h/linknamespace
FAIL: conform/XPG4/iconv.h/linknamespace
FAIL: conform/XPG4/langinfo.h/linknamespace
FAIL: conform/XPG4/locale.h/linknamespace
FAIL: conform/XPG4/math.h/linknamespace
FAIL: conform/XPG4/monetary.h/linknamespace
FAIL: conform/XPG4/netdb.h/linknamespace
FAIL: conform/XPG4/netinet/in.h/linknamespace
FAIL: conform/XPG4/nl_types.h/linknamespace
FAIL: conform/XPG4/poll.h/linknamespace
FAIL: conform/XPG4/pwd.h/linknamespace
FAIL: conform/XPG4/regex.h/linknamespace
FAIL: conform/XPG4/search.h/linknamespace
FAIL: conform/XPG4/signal.h/linknamespace
FAIL: conform/XPG4/stdio.h/linknamespace
FAIL: conform/XPG4/stdlib.h/linknamespace
FAIL: conform/XPG4/string.h/linknamespace
FAIL: conform/XPG4/stropts.h/linknamespace
FAIL: conform/XPG4/sys/mman.h/linknamespace
FAIL: conform/XPG4/sys/msg.h/linknamespace
FAIL: conform/XPG4/sys/shm.h/linknamespace
FAIL: conform/XPG4/sys/socket.h/linknamespace
FAIL: conform/XPG4/sys/statvfs.h/linknamespace
FAIL: conform/XPG4/sys/time.h/linknamespace
FAIL: conform/XPG4/sys/uio.h/linknamespace
FAIL: conform/XPG4/sys/wait.h/linknamespace
FAIL: conform/XPG4/syslog.h/linknamespace
FAIL: conform/XPG4/termios.h/linknamespace
FAIL: conform/XPG4/time.h/linknamespace
FAIL: conform/XPG4/ucontext.h/linknamespace
FAIL: conform/XPG4/ulimit.h/linknamespace
FAIL: conform/XPG4/unistd.h/linknamespace
FAIL: conform/XPG4/utmpx.h/linknamespace
FAIL: conform/XPG4/wordexp.h/linknamespace
FAIL: elf/check-localplt
FAIL: math/test-double
FAIL: math/test-double-finite
FAIL: math/test-float
FAIL: math/test-float-finite
FAIL: math/test-idouble
FAIL: math/test-ifloat
FAIL: math/test-ildouble
FAIL: math/test-tgmath
Summary of test results:
335 FAIL
2221 PASS
45 XFAIL
The math failures are ULPs issues (not test-tgmath though).
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>From glibc-bugs-return-34918-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 08:06:03 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/14627] close() should set errno to EINPROGRESS when interrupted by a signal
Date: Fri, 28 Oct 2016 08:06:00 -0000
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__vic <d.v.a at ngs dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |d.v.a at ngs dot ru
--- Comment #3 from __vic <d.v.a at ngs dot ru> ---
Second this! Why return EINTR if file is already closed? It is a success, not
an error. The postcondition is satisfied. EINTR must be returned only if you
want user repeated the call again.
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>From glibc-bugs-return-34919-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 10:26:12 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20728] powerpc: Missing TOC stub in clone
Date: Fri, 28 Oct 2016 10:26:00 -0000
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--- Comment #2 from Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> ---
(In reply to Carlos O'Donell from comment #1)
> How do you plan to fix this?
With this patch: https://sourceware.org/ml/libc-alpha/2016-10/msg00367.html
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>From glibc-bugs-return-34920-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 12:58:23 2016
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
Date: Fri, 28 Oct 2016 12:58:00 -0000
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--- Comment #19 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Fri, 28 Oct 2016, carlos at redhat dot com wrote:
> FAIL: conform/ISO/assert.h/linknamespace
> FAIL: conform/ISO/locale.h/linknamespace
The list of headers isn't really interesting here; it's the contents of
the test output files. Presumably there are a few key functions that get
inlined for -O2 but not -Os and are responsible for a large proportion of
these failures because some code using them gets pulled in for most/all
static links. Fixes would need determining case-by-case, e.g. making a
function always_inline, making a header inline visible for -Os when
building glibc, or using an internal-namespace name for a function while
making sure that gets inlined for -O2 just as the user-namespace version
got inlined. (But the linknamespace failures are bug 19463 and localplt
failures with -Os are bug 15105, so this bug should be considered to be
just about the build failure, and separate bugs filed for other defects in
the resulting libc that don't already have their own bugs.)
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>From glibc-bugs-return-34921-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 28 13:22:36 2016
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
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--- Comment #20 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to joseph@codesourcery.com from comment #19)
> On Fri, 28 Oct 2016, carlos at redhat dot com wrote:
>
> > FAIL: conform/ISO/assert.h/linknamespace
> > FAIL: conform/ISO/locale.h/linknamespace
>
> The list of headers isn't really interesting here; it's the contents of
> the test output files. Presumably there are a few key functions that get
> inlined for -O2 but not -Os and are responsible for a large proportion of
> these failures because some code using them gets pulled in for most/all
> static links. Fixes would need determining case-by-case, e.g. making a
> function always_inline, making a header inline visible for -Os when
> building glibc, or using an internal-namespace name for a function while
> making sure that gets inlined for -O2 just as the user-namespace version
> got inlined. (But the linknamespace failures are bug 19463 and localplt
> failures with -Os are bug 15105, so this bug should be considered to be
> just about the build failure, and separate bugs filed for other defects in
> the resulting libc that don't already have their own bugs.)
Right, it's these extra PLT references which show which functions are not
getting inlined and thus cause the major problems. For example feof_unlocked is
a serious offender in a lot of the linknamespace failures.
I agree that this bug should just cover the build failures.
So we have two things to work out:
* Issues with -fomit-frame-pointer, fixed by Florian's patch.
* Issues with -Werror, fixed by my patch under discussion.
I think Florian's patch can go in right now though.
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--- Comment #21 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Oct 28 17:04:57 2016 +0200
i386: Support CFLAGS which imply -fno-omit-frame-pointer [BZ #20729]
-----------------------------------------------------------------------
Summary of changes:
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2 files changed, 59 insertions(+), 12 deletions(-)
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Subject: [Bug dynamic-link/20019] NULL pointer dereference in libc.so.6 IFUNC due to uninitialized GOT
Date: Fri, 28 Oct 2016 16:13:00 -0000
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commit 0e6d3adc60d8073397af6a320e594d98d7fbedde
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Fri Oct 28 09:11:55 2016 -0700
Check IFUNC definition in unrelocated shared library [BZ #20019]
Calling an IFUNC function defined in unrelocated shared library may
lead to segfault. This patch issues an error message to request
relinking the shared library if it references IFUNC function defined
in the unrelocated shared library.
[BZ #20019]
* sysdeps/i386/dl-machine.h (elf_machine_rel): Check IFUNC
definition in unrelocated shared library.
* sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
sysdeps/i386/dl-machine.h | 18 +++++++++++++++++-
sysdeps/x86_64/dl-machine.h | 18 +++++++++++++++++-
3 files changed, 41 insertions(+), 2 deletions(-)
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20019] NULL pointer dereference in libc.so.6 IFUNC due to uninitialized GOT
Date: Fri, 28 Oct 2016 16:15:00 -0000
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--- Comment #15 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to cvs-commit@gcc.gnu.org from comment #14)
> Summary of changes:
> ChangeLog | 7 +++++++
> sysdeps/i386/dl-machine.h | 18 +++++++++++++++++-
> sysdeps/x86_64/dl-machine.h | 18 +++++++++++++++++-
> 3 files changed, 41 insertions(+), 2 deletions(-)
I think the semantics are equivalent for all arches and therefore this needs
fixing across all arches that have IFUNC support.
If you close this issue out, please open a new bug to fix the other arches, and
retitle this one for x86 only.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20019] NULL pointer dereference in libc.so.6 IFUNC due to uninitialized GOT
Date: Fri, 28 Oct 2016 16:52:00 -0000
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--- Comment #16 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Carlos O'Donell from comment #15)
> (In reply to cvs-commit@gcc.gnu.org from comment #14)
> > Summary of changes:
> > ChangeLog | 7 +++++++
> > sysdeps/i386/dl-machine.h | 18 +++++++++++++++++-
> > sysdeps/x86_64/dl-machine.h | 18 +++++++++++++++++-
> > 3 files changed, 41 insertions(+), 2 deletions(-)
>
> I think the semantics are equivalent for all arches and therefore this needs
> fixing across all arches that have IFUNC support.
>
> If you close this issue out, please open a new bug to fix the other arches,
> and retitle this one for x86 only.
This patch only addresses the x86 specific IFUNC implementation within
glibc. It doesn't cover IFUNC issue outside of libc.so. IFUNC can still fail
on all arches outside of libc.so. I think it is OK to mark it x86 specific
and close it.
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20019] NULL pointer dereference in libc.so.6 IFUNC due to uninitialized GOT
Date: Fri, 28 Oct 2016 18:38:00 -0000
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--- Comment #17 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to H.J. Lu from comment #16)
> (In reply to Carlos O'Donell from comment #15)
> > (In reply to cvs-commit@gcc.gnu.org from comment #14)
> > > Summary of changes:
> > > ChangeLog | 7 +++++++
> > > sysdeps/i386/dl-machine.h | 18 +++++++++++++++++-
> > > sysdeps/x86_64/dl-machine.h | 18 +++++++++++++++++-
> > > 3 files changed, 41 insertions(+), 2 deletions(-)
> >
> > I think the semantics are equivalent for all arches and therefore this needs
> > fixing across all arches that have IFUNC support.
> >
> > If you close this issue out, please open a new bug to fix the other arches,
> > and retitle this one for x86 only.
>
> This patch only addresses the x86 specific IFUNC implementation within
> glibc. It doesn't cover IFUNC issue outside of libc.so. IFUNC can still fail
> on all arches outside of libc.so. I think it is OK to mark it x86 specific
> and close it.
If other arches need the same or similar changes to dl-machine.h to get the
same level of warnings as on x86 then please file another issue for such
machine maintainers to review.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20019] NULL pointer dereference in libc.so.6 IFUNC due to uninitialized GOT
Date: Fri, 28 Oct 2016 20:16:00 -0000
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--- Comment #18 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Carlos O'Donell from comment #17)
> >
> > This patch only addresses the x86 specific IFUNC implementation within
> > glibc. It doesn't cover IFUNC issue outside of libc.so. IFUNC can still fail
> > on all arches outside of libc.so. I think it is OK to mark it x86 specific
> > and close it.
>
> If other arches need the same or similar changes to dl-machine.h to get the
> same level of warnings as on x86 then please file another issue for such
> machine maintainers to review.
There is no report of failure with the testcase for IFUNC implementation
in libc.so on other arches.
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Subject: [Bug localedata/20313] Update locale data to Unicode 9.0
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Maximiliano Curia <maxy at debian dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9600|http://www.unicode.org/Publ |Update to unicode 9.0
description|ic/UCD/latest/ucd/ |
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Subject: [Bug localedata/20313] Update locale data to Unicode 9.0
Date: Sat, 29 Oct 2016 12:51:00 -0000
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Maximiliano Curia <maxy at debian dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |maxy at debian dot org
--- Comment #2 from Maximiliano Curia <maxy at debian dot org> ---
Created attachment 9600
--> https://sourceware.org/bugzilla/attachment.cgi?id=9600&action=edit
http://www.unicode.org/Public/UCD/latest/ucd/
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>From glibc-bugs-return-34930-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 29 18:32:20 2016
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From: "kosakagumi at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/20745] New: localtime_r returns incorrect result.
Date: Sat, 29 Oct 2016 18:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20745
Bug ID: 20745
Summary: localtime_r returns incorrect result.
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: kosakagumi at gmail dot com
CC: drepper.fsp at gmail dot com
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Hello.
I find a bug for localtime and localtime_r. The result is different by
gmtime_r and localtime_r
The result is the followings:
$ ./hoi 2015 6/30 493
In: 2015 6/30 Add:493 days
localtime_r: 2016 11/4
gmtime_r: 2016 11/4
In: 2015 6/30 Add:494 days
localtime_r: 2016 11/5
gmtime_r: 2016 11/5
In: 2015 6/30 Add:495 days
localtime_r: 2016 11/6
gmtime_r: 2016 11/6
In: 2015 6/30 Add:496 days
localtime_r: 2016 11/6
gmtime_r: 2016 11/7
In: 2015 6/30 Add:497 days
localtime_r: 2016 11/7
gmtime_r: 2016 11/8
When the program adds 496 days, the result is different between locatime_r and
gmtime_r. gmtime_r returns the correct value.
The program is the followings:
#include <time.h>
#include <string.h>
#include <stdio.h>
static int CalcEndDays(int Y,int M,int D,int AddDays)
{
struct tm tm,ltime;
time_t time,tt;
tm.tm_sec = 0;
tm.tm_min = 0;
tm.tm_hour = 0;
tm.tm_mday = D;
tm.tm_mon = M - 1;
tm.tm_year = Y - 1900;
tt = (time_t)86400 * (time_t)(AddDays);
time = mktime(&tm) + tt;
localtime_r(&time,<ime);
fprintf(stderr,"localtime_r: %d %d/%d\n",ltime.tm_year+1900, ltime.tm_mon+1,
ltime.tm_mday);
gmtime_r(&time,<ime);
fprintf(stderr,"gmtime_r: %d %d/%d\n",ltime.tm_year+1900, ltime.tm_mon+1,
ltime.tm_mday);
fprintf(stderr,"\n");
}
int main(int argc,char **argv)
{
int y, m, d,add,i;
sscanf(argv[1], "%d", &y);
sscanf(argv[2], "%d/%d",&m,&d);
sscanf(argv[3], "%d",&add);
for( i = 0 ; i < 5 ; i++ ) {
fprintf(stderr,"In: %d %d/%d Add:%d days\n",y,m,d,add + i);
CalcEndDays(y,m,d,add + i);
}
}
Also the nm of the program is the followings:
U fprintf@@GLIBC_2.0
U fputc@@GLIBC_2.0
08048500 t frame_dummy
U gmtime_r@@GLIBC_2.0
U localtime_r@@GLIBC_2.0
08048620 T main
U mktime@@GLIBC_2.0
0804a028 B stderr@@GLIBC_2.0
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>From glibc-bugs-return-34931-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 29 18:36:43 2016
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Subject: [Bug time/20745] localtime_r returns incorrect result.
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|libc |time
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Subject: [Bug time/20745] localtime_r returns incorrect result.
Date: Sat, 29 Oct 2016 19:54:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
You are crossing the DST switchover.
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>From glibc-bugs-return-34933-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 29 20:08:27 2016
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From: "sourceware at sipao dot net" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/20747] New: es_VE first day of the week should be Monday
Date: Sat, 29 Oct 2016 20:08:00 -0000
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Bug ID: 20747
Summary: es_VE first day of the week should be Monday
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: sourceware at sipao dot net
CC: libc-locales at sourceware dot org
Target Milestone: ---
In Venezuela (es_VE) the first day of the week is Monday, not Sunday.
Calendar on the ministry of education website:
http://www.me.gob.ve/images/PDF/CALENDARIO_ESCOLAR_2016_2017.pdf
Calendar on the Central University of Venezuela website:
http://www.ucv.ve/sobre-la-ucv/calendario.html
A past related correction for es_ES:
https://sourceware.org/bugzilla/show_bug.cgi?id=3320
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--- Comment #22 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 93fe09cb5fbf68e473d5514adc069d2f6115cc23 (commit)
from 960294f00a33559af40143ac056f68d21c006d27 (commit)
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revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=93fe09cb5fbf68e473d5514adc069d2f6115cc23
commit 93fe09cb5fbf68e473d5514adc069d2f6115cc23
Author: Carlos O'Donell <carlos@redhat.com>
Date: Sat Oct 29 23:45:40 2016 -0400
Bug 20729: Fix building with -Os.
This commit adds a new DIAG_IGNORE_Os_NEEDS_COMMENT which is only
enabled when compiling with -Os. This allows developers working on
-Os enabled builds to mark false-positive warnings without impacting the
warnings emitted at -O2.
Then using the new DIAG_IGNORE_Os_NEEDS_COMMENT we fix 6 warnings
generated with GCC 5 to get -Os builds working again.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 16 ++++++++++++++++
iconvdata/iso-2022-cn-ext.c | 12 ++++++++++++
include/libc-internal.h | 15 +++++++++++++++
locale/weight.h | 8 ++++++++
locale/weightwc.h | 8 ++++++++
nptl_db/thread_dbP.h | 9 +++++++++
resolv/res_send.c | 11 ++++++++++-
string/strcoll_l.c | 13 +++++++++++++
8 files changed, 91 insertions(+), 1 deletions(-)
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
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--- Comment #23 from Carlos O'Donell <carlos at redhat dot com> ---
This is now resolved on master. You can build i486 with -Os now.
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2016-10-30
CC| |carlos at redhat dot com
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to sourceware from comment #0)
> In Venezuela (es_VE) the first day of the week is Monday, not Sunday.
>
> Calendar on the ministry of education website:
> http://www.me.gob.ve/images/PDF/CALENDARIO_ESCOLAR_2016_2017.pdf
No permission to view this. Can you find another government reference?
> Calendar on the Central University of Venezuela website:
> http://www.ucv.ve/sobre-la-ucv/calendario.html
This is non-normative and terrible to read. Though it does show Monday (Lunes)
as the first day of the numbered week.
> A past related correction for es_ES:
> https://sourceware.org/bugzilla/show_bug.cgi?id=3320
While I agree that in general most South American countries probably expect
Monday to be the first day of the week we need some more references before I
can move this issue forward.
I can read Spanish so please don't be afraid to include Spanish-only
references.
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>From glibc-bugs-return-34937-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 31 03:24:46 2016
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
Date: Mon, 31 Oct 2016 03:24:00 -0000
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--- Comment #2 from sourceware at sipao dot net ---
You can find the calendar on the ministery's website:
http://www.me.gob.ve/
It is one of the links in the moving top banner.
I can attach it to the bug if you still can't open it.
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Florian Weimer <fweimer at redhat dot com> changed:
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Subject: [Bug build/20750] New: Build fails with default PIE enabled gcc-6.x
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Bug ID: 20750
Summary: Build fails with default PIE enabled gcc-6.x
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: allan at archlinux dot org
CC: carlos at redhat dot com
Target Milestone: ---
When using a gcc-6.x built with --enable-debug-pie, glibc-2.24 fails to compile
with errors in the form:
../sysdeps/x86_64/multiarch/memcpy-ssse3.S: Assembler messages:
../sysdeps/x86_64/multiarch/memcpy-ssse3.S:65: Error: operand type mismatch for
`jb'
This occurs in several of the mem* related assembly files.
Reverting commit 6901def6 ("Avoid an extra branch to PLT for -z now") allows
the build to complete.
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #14 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 20750 has been marked as a duplicate of this bug. ***
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Same problem as 20621
*** This bug has been marked as a duplicate of bug 20621 ***
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Subject: [Bug glob/20707] gl_pathv entries not set to NULL with GLOB_DOOFFS
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=44c637ce806cc41534e89117a93c41fd310e7e3f
commit 44c637ce806cc41534e89117a93c41fd310e7e3f
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Oct 20 10:04:41 2016 +0200
Properly initialize glob structure with GLOB_BRACE|GLOB_DOOFFS (bug 20707)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++++++
posix/glob.c | 65 +++++++++++++++++++++-------------------------------
posix/globtest.sh | 16 +++++++++++++
3 files changed, 50 insertions(+), 39 deletions(-)
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--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed.
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--- Comment #3 from Maximiliano Curia <maxy at debian dot org> ---
As far as I can tell there is a script that updates the unicode data from the
specification files.
Running:
./localedata/unicode-gen/utf8_gen.py /tmp/UnicodeData.txt
/tmp/EastAsianWidth.txt
with the files from:
http://www.unicode.org/Public/UCD/latest/ucd/
results in an updated UTF-8 file. Is there anything else needed to update to
the unicode 9.0 standard?
I'm attaching the diff after running this command.
Happy hacking,
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Subject: [Bug dynamic-link/20480] Patch: ifunc not executable, crashes sudo qemu
Date: Mon, 31 Oct 2016 13:55:00 -0000
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--- Comment #12 from Florian Weimer <fweimer at redhat dot com> ---
I agree that looks like a dynamic linker bug on i386. It seems that in other
cases, the dynamic linker does not special markup for sections which contain
TEXTREL relocations.
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Please post the patch to the libc-alpha mailing list. Thanks.
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Subject: [Bug build/19484] x86_64 build fails: ifunc-impl-list.c:50: undefined reference to `__memmove_chk_avx512_no_vzeroupper'
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
No confirmation, but presumed to be fixed.
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Subject: [Bug nptl/18729] x86: glibc-2.21 linked with application which uses pthread_rwlock_unlock on pre Haswell CPUs crashes because of TSX-NI usage
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
As noted in comment 3, not reproducible for me.
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>From glibc-bugs-return-34949-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 31 15:44:35 2016
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Subject: [Bug libc/18403] statically linked app uses vector instructions before main()
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--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
The kernel approach has changed:
commit 58122bf1d856a4ea9581d62a07c557d997d46a19
Author: Andy Lutomirski <luto@kernel.org>
Date: Sun Jan 24 14:38:10 2016 -0800
x86/fpu: Default eagerfpu=on on all CPUs
So I don't think glibc has to change, unless benchmarks show that using vector
instructions in string operations negatively impact performance or battery life
etc.
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>From glibc-bugs-return-34950-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 31 15:49:15 2016
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Subject: [Bug nis/13761] [PATCH] Fix allocation in nss_compat for large number of memberships to a group
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>From glibc-bugs-return-34951-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 31 16:06:57 2016
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Subject: [Bug libc/13983] __libc_message() shouldn't blindly write to STDERR_FILENO
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--- Comment #19 from Florian Weimer <fweimer at redhat dot com> ---
Link to our archives:
https://sourceware.org/ml/libc-alpha/2012-04/msg00571.html
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Subject: [Bug dynamic-link/20019] NULL pointer dereference in libc.so.6 IFUNC due to uninitialized GOT
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--- Comment #19 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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--- Comment #13 from Chris Leonard <cjlhomeaddress at gmail dot com> ---
I would very strongly like to recommend that this locale be entered as ayr_BO.
There is already an ayc_PE locale for Aymara from Peru and this is in
widespread use in Peru's One Laptop per Child deployment and by the translation
effort here: http://translate.sugarlabs.org/ayc/
Use of macrolanguage codes like ay should be discouraged in developing locales
as they tend to crowd out or cause confusion when a second variant comes along.
ayc and ayr are the specific languages codes (ay and aym are macrolanguage
codes).
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commit bb5badf17087099dd9140f812778f7a8615b2111
Author: Carlos O'Donell <carlos@redhat.com>
Date: Mon Oct 31 16:46:57 2016 -0400
Bug 20729: Include libc-internal.h where required.
The original fix for bug 20729 failed to include
libc-internal.h in the files that needed them and
this caused build failures on machines that don't
implicitly include this header. This commit fixes
that by following the consensus rule that a header,
if needed, should always be directly included.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 ++++++++-
locale/weight.h | 2 ++
locale/weightwc.h | 2 ++
nptl_db/thread_dbP.h | 1 +
4 files changed, 13 insertions(+), 1 deletions(-)
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
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--- Comment #3 from sourceware at sipao dot net ---
Created attachment 9604
--> https://sourceware.org/bugzilla/attachment.cgi?id=9604&action=edit
Official school calendar for ministry of education
I'm attaching the calendar to the bug because it seems that the website of the
ministry of education (http://www.me.gob.ve/) is not accessible from outside
Venezuela.
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>From glibc-bugs-return-34956-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 01 14:19:30 2016
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
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--- Comment #4 from sourceware at sipao dot net ---
Another calendar for Banesco, one of Venezuela's main bank:
http://www.banesco.com/descargas/aplicaciones-banesco/descargas-calendario
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
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--- Comment #26 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to john.frankish from comment #25)
> Verfied that glibc-2.24 compiles with -Os and the three patches in git.
>
> libc and libm are smaller than forcing "-fomit-frame-pointer" too :)
Please do not forget that bug 19463 and bug 15105 are very real issues with the
-Os build that need to be fixed before this is a stable build configuration.
Please do not consider that the work is done yet for -Os :-)
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
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--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
There appears to be a lot of common statements on social question sites that
the first day of the week in Venezuela is Sunday.
For example:
https://es.answers.yahoo.com/question/index?qid=20070919211207AA7q6Pp
How do you reconcile that with your statements?
I do see that the Ministry of Education's calendar is using Lunes as the first
day of the week.
I do see that Banesco's calendar is also using Lunes as the first day of the
week.
I think we still need an answer regarding the statements above on social
question sites, and another government reference.
For example I would like to load this site:
http://www.tsj.gob.ve/calendario-judicial
But I can't reference it now. If you could that would be helpful to see what
the Tribunal Supremo de Justicia is using.
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Subject: [Bug manual/19673] clog10 docs appear to be erroneous
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6adaeadf95fa5cc68e92b07456bb82dbd85afd06
commit 6adaeadf95fa5cc68e92b07456bb82dbd85afd06
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 1 18:38:52 2016 +0000
Correct clog10 documentation (bug 19673).
Bug 19673 reports that the documentation of clog10 is incorrect, both
failing to include the division by log (10) in the imaginary part and,
in the non-TeX version of the equation only, describing the LHS as log
rather than log10.
This patch fixes both issues. Note: I think it's appropriate that the
LHS says log10 not clog10, and that the cexp and clog descriptions
referred to in a comment in that bug report similarly say exp and log;
this is a mathematical description not a literal C one.
Tested for x86_64.
[BZ #19673]
* manual/math.texi (Exponents and Logarithms): Correct description
of clog10.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
manual/math.texi | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
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--- Comment #6 from sourceware at sipao dot net ---
The social question site's answers are 9 years old (see below), only one answer
is specific to Venezuela and the advanced religious explanations do no reflect
common civil life because christianism is not so present in public, state or
business affairs in Venezuela
(https://en.wikipedia.org/wiki/Catholic_Church_in_Venezuela).
The term for weekend is, as in English "fin de semana" (end of the week). That
includes Sunday.
http://www.tsj.gob.ve isn't loading for me either.
For Universidad Bolivariana de Venezuela the week starts on Monday:
http://www.ubv.edu.ve/ Top => Estudiantes => Calendario Academico
For the Yellow Pages of Cantv (State-owned phone company) the week starts on
Monday:
http://www.pac.com.ve/contenido/efemerides/calendario-venezuela-2014-feriados-imprimir/10987/256
Around me, all Android phones' default calendar app have Monday as the first
day.
One of the most known calendars in Venezuela is "Calendario Polar", named after
the largest beer brand (You can google image it if you want to see half naked
ladies), shows Sunday as the first day for the 2008 edition but Monday as the
first day for 2012, so there must have been a shift.
I can send you pictures of the calendars around me at the office if you wish.
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Subject: [Bug localedata/20756] New: [PATCH] Use Unicode wise thousands separator
Date: Tue, 01 Nov 2016 19:52:00 -0000
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Bug ID: 20756
Summary: [PATCH] Use Unicode wise thousands separator
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: sbrabec at suse dot cz
CC: libc-locales at sourceware dot org
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Created attachment 9605
--> https://sourceware.org/bugzilla/attachment.cgi?id=9605&action=edit
Proposed changes
Many languages use small gap as thousands separator.
Thousands separator should not be a plain space, but a narrow space. And
additionally, it is not allowed to wrap number in the middle when wrapping
line.
Locale data were created in a deep age of 8-bit encodings, so most of them use
space (incorrect: it allows word wrapping in the middle of the number), or NBSP
(better, but typographically incorrect: space between group is too wide).
Now unicode is widely supported, so we should leave legacy characters in favor
of correct UNICODE character.
UNICODE has a dedicated character for this purpose:
NNBSP
U+202F NARROW NO-BREAK SPACE: a narrow form of a no-break space, typically the
width of a thin space or a mid space
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
Date: Tue, 01 Nov 2016 21:58:00 -0000
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--- Comment #7 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to sourceware from comment #6)
> Around me, all Android phones' default calendar app have Monday as the first
> day.
On Android it's Settings->General->Start of Week, it's completely under user
control, with the default being Sunday.
e.g.
638 if (startDay == Calendar.SATURDAY) {
639 return Time.SATURDAY;
640 } else if (startDay == Calendar.MONDAY) {
641 return Time.MONDAY;
642 } else {
643 return Time.SUNDAY;
644 }
I expect you've changed it to Monday on your phones.
In glibc this data is taken from the locale which is a combination of language,
culture, and geographic location.
> One of the most known calendars in Venezuela is "Calendario Polar", named
> after the largest beer brand (You can google image it if you want to see
> half naked ladies), shows Sunday as the first day for the 2008 edition but
> Monday as the first day for 2012, so there must have been a shift.
Can you reach out to them and ask them _why_ they changed their calender to
Lunes as the first day?
If we could justify the change it would make this easier to accept as change in
glibc.
For example Canada defines ISO 8601 as the national standard (CSA Z234.5:1989)
which says Monday is the first day of the week.
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Subject: [Bug localedata/20756] [PATCH] Use Unicode wise thousands separator
Date: Tue, 01 Nov 2016 22:18:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2016-11-01
CC| |carlos at redhat dot com
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Stanislav Brabec from comment #0)
> Created attachment 9605 [details]
> Proposed changes
>
> Many languages use small gap as thousands separator.
>
> Thousands separator should not be a plain space, but a narrow space. And
> additionally, it is not allowed to wrap number in the middle when wrapping
> line.
Agreed.
> Locale data were created in a deep age of 8-bit encodings, so most of them
> use space (incorrect: it allows word wrapping in the middle of the number),
> or NBSP (better, but typographically incorrect: space between group is too
> wide).
>
> Now unicode is widely supported, so we should leave legacy characters in
> favor of correct UNICODE character.
>
> UNICODE has a dedicated character for this purpose:
>
> NNBSP
> U+202F NARROW NO-BREAK SPACE: a narrow form of a no-break space, typically
> the width of a thin space or a mid space
I would support this change.
The NNBSP has been around since Unicode 3.0 so we support it across the board.
Can you please post this to libc-alpha following:
https://sourceware.org/glibc/wiki/Contribution%20checklist
Note that you don't need a copyright assignment for locale data changes as your
patch proposes.
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
Date: Tue, 01 Nov 2016 23:19:00 -0000
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--- Comment #9 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to sourceware from comment #8)
> What I mean it is not Canada. I _wish_ there was some kind of national
> standard institute but now no one is even sure there is a state. So the only
> sources we can get are a few crumbling governments websites from 2005 & the
> calendars I see around me, which I can send you pictures of if that can help.
I'm inclined to believe that this has changed in Venezuela, but we really need
to keep our quality of implementation high and we need to validate this against
some more official record.
Can you provide some newspaper references that show common usage is 'Lunes' on
the first day of the week? With those I could probably convince myself that
we're OK to make the changes.
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Subject: [Bug localedata/20313] Update locale data to Unicode 9.0
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https://sourceware.org/ml/libc-alpha/2016-06/msg01258.html
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Subject: [Bug math/20357] Incorrect cos result for 1.5174239687223976
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, release/2.23/master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=422facff9f2c4972e2dc46090a704d11b840b0c0
commit 422facff9f2c4972e2dc46090a704d11b840b0c0
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon Jul 18 22:33:09 2016 +0530
Fix cos computation for multiple precision fallback (bz #20357)
During the sincos consolidation I made two mistakes, one was a logical
error due to which cos(0x1.8475e5afd4481p+0) returned
sin(0x1.8475e5afd4481p+0) instead.
The second issue was an error in negating inputs for the correct
quadrants for sine. I could not find a suitable test case for this
despite running a program to search for such an input for a couple of
hours.
Following patch fixes both issues. Tested on x86_64. Thanks to Matt
Clay for identifying the issue.
[BZ #20357]
* sysdeps/ieee754/dbl-64/s_sin.c (sloww): Fix up condition
to call __mpsin/__mpcos and to negate values.
* math/auto-libm-test-in: Add test.
* math/auto-libm-test-out: Regenerate.
(cherry picked from commit cbf88869edced4b23d792d95a8626e35b831df35)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 ++
NEWS | 1 +
math/auto-libm-test-in | 3 +
math/auto-libm-test-out | 207 ++++++++++++++++++++++++++++++++++++++++
sysdeps/ieee754/dbl-64/s_sin.c | 4 +-
5 files changed, 222 insertions(+), 2 deletions(-)
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--- Comment #2 from Stanislav Brabec <sbrabec at suse dot cz> ---
Sent to libc-alpha: https://sourceware.org/ml/libc-alpha/2016-11/msg00062.html
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>From glibc-bugs-return-34969-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 02 17:03:31 2016
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Subject: [Bug build/20729] glibc-2.24 fails to build for i486 with -Os
Date: Wed, 02 Nov 2016 17:03:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20729
--- Comment #27 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 0cb9dcc8f226ab5116df42e0e1fff06e10a85b45 (commit)
from 9032070deaa03431921315f973c548c2c403fecc (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0cb9dcc8f226ab5116df42e0e1fff06e10a85b45
commit 0cb9dcc8f226ab5116df42e0e1fff06e10a85b45
Author: Carlos O'Donell <carlos@redhat.com>
Date: Wed Nov 2 13:01:36 2016 -0400
Bug 20729: Fix build failures on ppc64 and other arches.
The changes to fix bug 20729 introduced an error which removed an
ignore diagnostic from -O2 by using the new -Os related macro.
This broke ppc64 builds. This commit fixes the mistake.
Tested on x86, x86_64, ppc64, ppc64le, arm, aarch64, and s390x.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 ++++++++
resolv/res_send.c | 4 ++--
2 files changed, 10 insertions(+), 2 deletions(-)
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>From glibc-bugs-return-34970-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 03 15:08:52 2016
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
Date: Thu, 03 Nov 2016 15:08:00 -0000
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--- Comment #10 from sourceware at sipao dot net ---
(In reply to Carlos O'Donell from comment #9)
Thank you for keeping high standards. I'll try to take pictures of calendars
around me and post them.
The ministry of Tourism also uses Monday as first day:
http://www.mintur.gob.ve/mintur/ (Bottom of the page)
The ministry of Energy & national electricity company use Monday as the first
day for rationing electricity:
http://www.corpoelec.gob.ve/sites/default/files/plan_de_administracion_de_cargas_final-6_junio-final.pdf
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--- Comment #11 from sourceware at sipao dot net ---
Created attachment 9607
--> https://sourceware.org/bugzilla/attachment.cgi?id=9607&action=edit
Calendar of an office staples provider using Monday as the first day
Calendar from the largest provider for office staples, paper, pens, folders,
notebooks... (http://www.ofimaniaweb.com/)
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>From glibc-bugs-return-34972-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 03 15:38:45 2016
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Subject: [Bug network/20626] Unable to resolve host name on MIPS (MIPS-II, o32)
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2016-11-03
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--- Comment #11 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Mingcong Bai from comment #7)
> It will have to wait until the weekend, then. But on that note, we do build
> our distribution on Qemu user emulation, it worked before, while if it
> doesn't now, we are in quite some trouble geting to work with MIPS.
Have you been able to reproduce this on actual hardware in the meantime?
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>From glibc-bugs-return-34973-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 03 20:39:03 2016
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Subject: [Bug build/20750] Build fails with default PIE enabled gcc-6.x
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2016-11-03
CC| |hjl.tools at gmail dot com
Resolution|DUPLICATE |---
Ever confirmed|0 |1
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
I can't reproduce it on release/2.24/master branch with GCC 6.2.1
configured with --enable-default-pie.
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----------------------------------------------------------------------------
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Assignee|unassigned at sourceware dot org |hjl.tools at gmail dot com
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>From glibc-bugs-return-34975-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 03 21:20:35 2016
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 9608
--> https://sourceware.org/bugzilla/attachment.cgi?id=9608&action=edit
A patch
Please try this.
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--- Comment #4 from Allan McRae <allan at archlinux dot org> ---
This patch fixes the build. To replicate, you will need to use the
--enable-bind-now configure option.
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Subject: [Bug manual/14139] Do not hardcode platform names in manual/libm-err-tab.pl
Date: Fri, 04 Nov 2016 16:50:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #4 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=799131036e53c0536d0ce796e705f8dc295eeba2
commit 799131036e53c0536d0ce796e705f8dc295eeba2
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Nov 4 16:49:06 2016 +0000
Do not hardcode platform names in manual/libm-err-tab.pl (bug 14139).
manual/libm-err-tab.pl hardcodes a list of names for particular
platforms (mapping from sysdeps directory name to friendly name for
the manual). This goes against the principle of keeping information
about individual platforms in their corresponding sysdeps directory,
and the list is also very out-of-date regarding supported platforms
and their corresponding sysdeps directories.
This patch fixes this by adding a libm-test-ulps-name file alongside
each libm-test-ulps file. The script then gets the friendly name from
that file, which is required to exist, so it no longer needs to allow
for the mapping being missing.
Tested for x86_64.
[BZ #14139]
* manual/libm-err-tab.pl (%pplatforms): Initialize to empty.
(find_files): Obtain platform name from libm-test-ulps-name and
store in %pplatforms.
(canonicalize_platform): Remove.
(print_platforms): Use $pplatforms directly.
(by_platforms): Do not allow for platforms missing from
%pplatforms.
* sysdeps/aarch64/libm-test-ulps-name: New file.
* sysdeps/alpha/fpu/libm-test-ulps-name: Likewise.
* sysdeps/arm/libm-test-ulps-name: Likewise.
* sysdeps/generic/libm-test-ulps-name: Likewise.
* sysdeps/hppa/fpu/libm-test-ulps-name: Likewise.
* sysdeps/i386/fpu/libm-test-ulps-name: Likewise.
* sysdeps/i386/i686/fpu/multiarch/libm-test-ulps-name: Likewise.
* sysdeps/ia64/fpu/libm-test-ulps-name: Likewise.
* sysdeps/m68k/coldfire/fpu/libm-test-ulps-name: Likewise.
* sysdeps/m68k/m680x0/fpu/libm-test-ulps-name: Likewise.
* sysdeps/microblaze/libm-test-ulps-name: Likewise.
* sysdeps/mips/mips32/libm-test-ulps-name: Likewise.
* sysdeps/mips/mips64/libm-test-ulps-name: Likewise.
* sysdeps/nios2/libm-test-ulps-name: Likewise.
* sysdeps/powerpc/fpu/libm-test-ulps-name: Likewise.
* sysdeps/powerpc/nofpu/libm-test-ulps-name: Likewise.
* sysdeps/s390/fpu/libm-test-ulps-name: Likewise.
* sysdeps/sh/libm-test-ulps-name: Likewise.
* sysdeps/sparc/fpu/libm-test-ulps-name: Likewise.
* sysdeps/tile/libm-test-ulps-name: Likewise.
* sysdeps/x86_64/fpu/libm-test-ulps-name: Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 30 +++++++++++++++
manual/libm-err-tab.pl | 40 +++++---------------
sysdeps/aarch64/libm-test-ulps-name | 1 +
sysdeps/alpha/fpu/libm-test-ulps-name | 1 +
sysdeps/arm/libm-test-ulps-name | 1 +
sysdeps/generic/libm-test-ulps-name | 1 +
sysdeps/hppa/fpu/libm-test-ulps-name | 1 +
sysdeps/i386/fpu/libm-test-ulps-name | 1 +
.../i386/i686/fpu/multiarch/libm-test-ulps-name | 1 +
sysdeps/ia64/fpu/libm-test-ulps-name | 1 +
sysdeps/m68k/coldfire/fpu/libm-test-ulps-name | 1 +
sysdeps/m68k/m680x0/fpu/libm-test-ulps-name | 1 +
sysdeps/microblaze/libm-test-ulps-name | 1 +
sysdeps/mips/mips32/libm-test-ulps-name | 1 +
sysdeps/mips/mips64/libm-test-ulps-name | 1 +
sysdeps/nios2/libm-test-ulps-name | 1 +
sysdeps/powerpc/fpu/libm-test-ulps-name | 1 +
sysdeps/powerpc/nofpu/libm-test-ulps-name | 1 +
sysdeps/s390/fpu/libm-test-ulps-name | 1 +
sysdeps/sh/libm-test-ulps-name | 1 +
sysdeps/sparc/fpu/libm-test-ulps-name | 1 +
sysdeps/tile/libm-test-ulps-name | 1 +
sysdeps/x86_64/fpu/libm-test-ulps-name | 1 +
23 files changed, 61 insertions(+), 30 deletions(-)
create mode 100644 sysdeps/aarch64/libm-test-ulps-name
create mode 100644 sysdeps/alpha/fpu/libm-test-ulps-name
create mode 100644 sysdeps/arm/libm-test-ulps-name
create mode 100644 sysdeps/generic/libm-test-ulps-name
create mode 100644 sysdeps/hppa/fpu/libm-test-ulps-name
create mode 100644 sysdeps/i386/fpu/libm-test-ulps-name
create mode 100644 sysdeps/i386/i686/fpu/multiarch/libm-test-ulps-name
create mode 100644 sysdeps/ia64/fpu/libm-test-ulps-name
create mode 100644 sysdeps/m68k/coldfire/fpu/libm-test-ulps-name
create mode 100644 sysdeps/m68k/m680x0/fpu/libm-test-ulps-name
create mode 100644 sysdeps/microblaze/libm-test-ulps-name
create mode 100644 sysdeps/mips/mips32/libm-test-ulps-name
create mode 100644 sysdeps/mips/mips64/libm-test-ulps-name
create mode 100644 sysdeps/nios2/libm-test-ulps-name
create mode 100644 sysdeps/powerpc/fpu/libm-test-ulps-name
create mode 100644 sysdeps/powerpc/nofpu/libm-test-ulps-name
create mode 100644 sysdeps/s390/fpu/libm-test-ulps-name
create mode 100644 sysdeps/sh/libm-test-ulps-name
create mode 100644 sysdeps/sparc/fpu/libm-test-ulps-name
create mode 100644 sysdeps/tile/libm-test-ulps-name
create mode 100644 sysdeps/x86_64/fpu/libm-test-ulps-name
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20768] New: [alpha] sqrt fegetenv namespace
Date: Fri, 04 Nov 2016 16:57:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20768
Bug ID: 20768
Summary: [alpha] sqrt fegetenv namespace
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Host: alpha*-*-*
On alpha, sqrt (a C90) function brings in references to fegetenv (C99),
resulting in linknamespace test failures:
[initial] __sqrt -> [libm.a(w_sqrt.o)] __ieee754_sqrt -> [libm.a(e_sqrt.o)]
__feholdexcept -> [libm.a(feholdexcpt.o)] fegetenv
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Subject: [Bug math/20768] [alpha] sqrt fegetenv namespace
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https://sourceware.org/bugzilla/show_bug.cgi?id=20768
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=860aacdad2d52af48bc549650726b29510feaba6
commit 860aacdad2d52af48bc549650726b29510feaba6
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Nov 4 17:19:13 2016 +0000
Fix alpha sqrt fegetenv namespace (bug 20768).
On alpha, sqrt (a C90 function) brings in references to fegetenv
(C99), resulting in linknamespace test failures:
[initial] __sqrt -> [libm.a(w_sqrt.o)] __ieee754_sqrt ->
[libm.a(e_sqrt.o)] __feholdexcept -> [libm.a(feholdexcpt.o)] fegetenv
This patch fixes this by making __feholdexcept call __fegetenv instead
of fegetenv.
Tested for Alpha (compilation only).
[BZ #20768]
* sysdeps/alpha/fpu/feholdexcpt.c (__feholdexcept): Call
__fegetenv instead of fegetenv.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
sysdeps/alpha/fpu/feholdexcpt.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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Subject: [Bug math/20768] [alpha] sqrt fegetenv namespace
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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Subject: [Bug build/20750] Build fails with default PIE enabled gcc-6.x
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
A patch is posted at
https://sourceware.org/ml/libc-alpha/2016-11/msg00191.html
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>From glibc-bugs-return-34983-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 06 18:56:23 2016
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/20785] binutils 2.28 fails to assemble power6/memset.S file in glibc
Date: Sun, 06 Nov 2016 18:56:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc64-linux-gnu, |
|powerpc64le-linux-gnu |
Status|NEW |RESOLVED
Version|2.28 (HEAD) |2.24
CC| |drepper.fsp at gmail dot com
Component|gas |libc
Host| |powerpc64*-*-*
Resolution|--- |FIXED
Product|binutils |glibc
Summary|[2.28 Regression] binutils |binutils 2.28 fails to
|fails to assemble |assemble power6/memset.S
|power6/memset.S file in |file in glibc
|glibc |
Target Milestone|--- |2.25
--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
This is already fixed by commit 78b7adbaea.
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>From glibc-bugs-return-34984-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 07 04:51:37 2016
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From: "kariya_mitsuru at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/20787] New: float_t is defined as float incorrectly on x86_64 even if __FLT_EVAL_METHOD__ is 2
Date: Mon, 07 Nov 2016 04:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20787
Bug ID: 20787
Summary: float_t is defined as float incorrectly on x86_64 even
if __FLT_EVAL_METHOD__ is 2
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: kariya_mitsuru at hotmail dot com
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float_t is defined as float incorrectly on x86_64 even if __FLT_EVAL_METHOD__
is 2.
cf. https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/x86/bits/mathdef.h
At line 25, __FLT_EVAL_METHOD__ is ignored if __x86_64__ is defined.
On my test environment(Ubuntu 16.10 x86_64, gcc 6.2, glibc 2.24), the GCC
accepts option '-mfpmath=387' and so __FLT_EVAL_METHOD__ is defined as 2.
==== test code (test.c) ====
#include <stdio.h>
#include <math.h>
int main()
{
printf("%d, %zu, %zu\n", __FLT_EVAL_METHOD__, sizeof(float_t),
sizeof(double_t));
}
==== test code (test.c) ====
==== output (gcc test.c && ./a.out) ====
0, 4, 8
==== output (gcc test.c && ./a.out) ====
==== output (gcc -mfpmath=387 test.c && ./a.out) ====
2, 4, 8
==== output (gcc -mfpmath=387 test.c && ./a.out) ====
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>From glibc-bugs-return-34985-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 07 12:31:55 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nscd/19733] nscd_certainly_running flag mechanism broken on nscd shared cache
Date: Mon, 07 Nov 2016 12:31:00 -0000
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--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
The problem here is that we'd need sufficiently compatible layout of
pthread_mutex_t for both 32-bit and 64-bit architectures, as long as they can
connect to the same nscd daemon.
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>From glibc-bugs-return-34986-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 07 17:47:36 2016
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/20790] New: rpcgen buffer overrun in get_prog_declaration
Date: Mon, 07 Nov 2016 17:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20790
Bug ID: 20790
Summary: rpcgen buffer overrun in get_prog_declaration
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Building with GCC 7 produces an error building rpcgen:
rpc_parse.c: In function 'get_prog_declaration':
rpc_parse.c:543:25: error: may write a terminating nul past the end of the
destination [-Werror=format-length=]
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
~~~~^
rpc_parse.c:543:5: note: format output between 5 and 14 bytes into a
destination of size 10
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
That buffer overrun is for the case where the .x file declares a program with a
million arguments. The strcpy two lines above can generate a buffer overrun
much more simply for a long argument name; the following test does it:
program TPROG { version TVERS { int FUNC(int
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa)
= 1; } = 1; } = 1;
Testing a patch.
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>From glibc-bugs-return-34987-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 07 18:44:45 2016
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Subject: [Bug libc/16814] RFE: Reconsider adding bcrypt (or scrypt) support
Date: Mon, 07 Nov 2016 18:44:00 -0000
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thepouar at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |thepouar at gmail dot com
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>From glibc-bugs-return-34988-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 08 02:29:53 2016
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From: "igor.liferenko at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20792] New: No locale data for character with code 0xFF
Date: Tue, 08 Nov 2016 02:29:00 -0000
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Bug ID: 20792
Summary: No locale data for character with code 0xFF
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: igor.liferenko at gmail dot com
CC: libc-locales at sourceware dot org
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Hi all,
In any locale using 8-bit encoding, islower() does not provide correct locale
data for slot 0xff. Tested on ru_RU.CP1251 and fr_FR.ISO-8859-1 locales. The
output of the following example is empty. But the output must be "lowercase".
#include <locale.h>
#include <ctype.h>
#include <stdio.h>
int main (void)
{
setlocale(LC_ALL, "fr_FR.ISO-8859-1"); /* ru_RU.CP1251 */
/* 11111111 */
char c =
1 << 0 |
1 << 1 |
1 << 2 |
1 << 3 |
1 << 4 |
1 << 5 |
1 << 6 |
1 << 7;
if (islower(c)) printf("lowercase\n");
return 0;
}
As about signedness of char, just think of 8 bit character codes in HEX, and
problem disappears (both -1 and 255 are 0xFF as 8 bit HEX number on any current
CPU)
Regards,
Igor
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>From glibc-bugs-return-34989-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 08 08:38:26 2016
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Subject: [Bug network/20790] rpcgen buffer overrun in get_prog_declaration
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This does not cross a trust boundary, so flagging as security-.
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Subject: [Bug localedata/20792] No locale data for character with code 0xFF
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |fweimer at redhat dot com
Resolution|--- |INVALID
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This result is required by the C standard. islower (EOF) must be 0. In C,
islower is only defined for the range of unsigned char, so no ambiguity arises.
In other words, your test program is incorrect because you do not convert the
islower argument to unsigned char.
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Martin Ejdestig <marejde at gmail dot com> changed:
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To: glibc-bugs@sourceware.org
Subject: [Bug network/20790] rpcgen buffer overrun in get_prog_declaration
Date: Tue, 08 Nov 2016 23:46:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5874510faaf3cbd0bb112aaacab9f225002beed1
commit 5874510faaf3cbd0bb112aaacab9f225002beed1
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Nov 8 23:44:51 2016 +0000
Fix rpcgen buffer overrun (bug 20790).
Building with GCC 7 produces an error building rpcgen:
rpc_parse.c: In function 'get_prog_declaration':
rpc_parse.c:543:25: error: may write a terminating nul past the end of the
destination [-Werror=format-length=]
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
~~~~^
rpc_parse.c:543:5: note: format output between 5 and 14 bytes into a
destination of size 10
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
That buffer overrun is for the case where the .x file declares a
program with a million arguments. The strcpy two lines above can
generate a buffer overrun much more simply for a long argument name.
The limit on length of line read by rpcgen (MAXLINESIZE == 1024)
provides a bound on the buffer size needed, so this patch just changes
the buffer size to MAXLINESIZE to avoid both possible buffer
overruns. A testcase is added that rpcgen does not crash with a
500-character argument name, where it previously crashed.
It would not at all surprise me if there are many other ways of
crashing rpcgen with either valid or invalid input; fuzz testing would
likely find various such bugs, though I don't think they are that
important to fix (rpcgen is not that likely to be used with untrusted
.x files as input). (As well as fuzz-findable bugs there are probably
also issues when various int variables get overflowed on very large
input.) The test infrastructure for rpcgen-not-crashing tests would
need extending if tests are to be added for cases where rpcgen should
produce an error, as opposed to cases where it should succeed.
Tested for x86_64 and x86.
[BZ #20790]
* sunrpc/rpc_parse.c (get_prog_declaration): Increase buffer size
to MAXLINESIZE.
* sunrpc/bug20790.x: New file.
* sunrpc/Makefile [$(run-built-tests) = yes] (rpcgen-tests): New
variable.
[$(run-built-tests) = yes] (tests-special): Add $(rpcgen-tests).
[$(run-built-tests) = yes] ($(rpcgen-tests)): New rule.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
sunrpc/Makefile | 11 +++++++++++
sunrpc/bug20790.x | 1 +
sunrpc/rpc_parse.c | 2 +-
4 files changed, 22 insertions(+), 1 deletions(-)
create mode 100644 sunrpc/bug20790.x
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Subject: [Bug network/20790] rpcgen buffer overrun in get_prog_declaration
Date: Tue, 08 Nov 2016 23:46:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20802] New: getauxval NULL pointer dereference after static dlopen
Date: Thu, 10 Nov 2016 16:23:00 -0000
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Bug ID: 20802
Summary: getauxval NULL pointer dereference after static dlopen
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Flags: security-
Created attachment 9620
--> https://sourceware.org/bugzilla/attachment.cgi?id=9620&action=edit
0001-Test-case-for-getauxval-after-static-dlopen.patch
The attached test case fails because _rtld_global_ro is not initialized after
static dlopen (beyond the static initializer), so GLRO (dl_auxv) is a NULL
pointer.
Backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b41977 in __getauxval (type=25) at getauxval.c:36
36 for (p = GLRO(dl_auxv); p->a_type != AT_NULL; p++)
(gdb) bt
#0 0x00007ffff7b41977 in __getauxval (type=25) at getauxval.c:36
#1 0x00007ffff7df974f in getauxval_wrapper (type=type@entry=25,
errnop=errnop@entry=0x7fffffffdb2c)
at tst-auxvalmod.c:28
#2 0x0000000000401171 in do_test () at tst-getauxval-static.c:59
#3 0x00000000004007f7 in main (argc=<optimized out>, argv=<optimized out>) at
../test-skeleton.c:513
(gdb)
I think we need a way to inject this information into the inner libc, so I'm
putting this bug into the dynamic-link component.
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Subject: [Bug dynamic-link/16628] Segfault after a binary without pthread dlopen()s a library linked with pthread
Date: Fri, 11 Nov 2016 08:31:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1393909
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
We see something rather similar: If dlopen of a shared object linked against
libpthread fails because it references a non-existing library, a subsequent
dlopen of a different library (which ought to be successful) crashes.
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To: glibc-bugs@sourceware.org
Subject: =?UTF-8?B?W0J1ZyBsb2NhbGUvMjA4MDRdIE5ldzogaWNvbnYgcmVqZWN0cyB3Y2hhcl90?= =?UTF-8?B?4oaUd2NoYXJfdA==?Date: Fri, 11 Nov 2016 13:52:00 -0000
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Bug ID: 20804
Summary: iconv rejects wchar_t↔wchar_t
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: minor
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Observed behavior with glibc 2.19 and 2.24:
$ echo -en "" | iconv -f wchar_t -t wchar_t
iconv: conversion from `wchar_t' to `wchar_t' is not supported
Try `iconv --help' or `iconv --usage' for more information.
The C interface (iconv_open) exhibits the same behavior.
Expected behavior:
$ echo -en "" | iconv -f wchar_t -t wchar_t
$
wchar_t is the only FROM-TO combination which is being rejected by iconv.
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/20747] es_VE first day of the week should be Monday
Date: Sat, 12 Nov 2016 04:52:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
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--- Comment #12 from Mike Frysinger <vapier at gentoo dot org> ---
the VE territory is specifically labeled as Sunday in CLDR:
common/supplemental/supplementalData.xml:
<firstDay day="sun" territories="... VE ..."/>
this proposal should be sent to the CLDR project i think before we consider it.
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Subject: [Bug nss/19837] nss_db: No retries for some long lines with a larger buffer
Date: Sat, 12 Nov 2016 06:39:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 4152ba3d8f58278b187101cf6508aa279bd00083
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Mar 29 11:27:32 2016 +0200
nss_db: Propagate ERANGE error if parse_line fails [BZ #19837]
Reproducer (needs to run as root):
perl -e \
'print "large:x:999:" . join(",", map {"user$_"} (1 .. 135))."\n"' \
>> /etc/group
cd /var/db
make
getent -s db group
After the fix, the last command should list the "large" group.
The magic number 135 has been chosen so that the line is shorter than
1024 bytes, but the pointers required to encode the member array will
cross the threshold, triggering the bug.
(cherry picked from commit a6033052d08027f745867e5e346852da1959226c)
(cherry picked from commit 28a87e027450b66faf1a431fc62779297c760e29)
-----------------------------------------------------------------------
Summary of changes:
nss/nss_db/db-XXX.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
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>From glibc-bugs-return-34998-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 12 06:39:46 2016
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Subject: [Bug math/19822] libm.so install clobbers old version
Date: Sat, 12 Nov 2016 06:39:00 -0000
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commit ab98aad2867140c24abaea4c6c7164c490e251f3
Author: Dylan Alex Simon <dylan-sourceware@dylex.net>
Date: Tue Mar 15 13:20:01 2016 -0400
math: don't clobber old libm.so on install [BZ #19822]
When installing glibc (w/mathvec enabled) in-place on a system with
a glibc w/out mathvec enabled, the install will clobber the existing
libm.so (e.g., /lib64/libm-2.21.so) with a linker script. This is
because libm.so is a symlink to libm.so.6 which is a symlink to the
final libm-2.21.so file. When the makefile writes the linker script
directly to libm.so, it gets clobbered.
The simple patch below to math/Makefile fixes this. It is based on
the nptl Makefile, which does exactly the same thing in a safer way.
(cherry picked from commit f9378ac3773ffe998a2b3406568778ee9f77f759)
(cherry picked from commit 73f158cef52f3968e0b9a7785638cf1737c35306)
-----------------------------------------------------------------------
Summary of changes:
math/Makefile | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
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Subject: [Bug network/19787] Missing and incorrect truncation checks in getnameinfo
Date: Sat, 12 Nov 2016 06:40:00 -0000
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commit 4ebe6340be509bf9c4aee099dd6519b7daf25f91
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed May 4 14:45:17 2016 +0200
getnameinfo: Return EAI_OVERFLOW in more cases [BZ #19787]
The AF_LOCAL and AF_INET/AF_INET6 non-numerci service conversion
did not return EAI_OVERFLOW if the supplied buffer was too small,
silently returning truncated data. In the AF_INET/AF_INET6
numeric cases, the snprintf return value checking was incorrect.
(cherry picked from commit 066746783d6c6c0f61b39c741177e24a9b398a20)
(cherry picked from commit f8020794aea5d4feb38683fc8301ee04a4fc4759)
-----------------------------------------------------------------------
Summary of changes:
inet/getnameinfo.c | 103 ++++++++++++++++++++++++++--------------------------
1 files changed, 51 insertions(+), 52 deletions(-)
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>From glibc-bugs-return-35000-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 12 06:40:14 2016
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Subject: [Bug network/19642] Memory leak in getnameinfo
Date: Sat, 12 Nov 2016 06:40:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit bdf954102f10d811fb08bcf8057d49651a5418e4
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Apr 29 17:08:06 2016 +0200
getnameinfo: Refactor and fix memory leak [BZ #19642]
Split getnameinfo into separate functions for host and service
lookups, and for different address families.
(cherry picked from commit 2dce81a319601e1ee110f7316f705b48c5686e72)
(cherry picked from commit e5bcbfc23b356b62ebfcd1943655eab45a9ca87c)
-----------------------------------------------------------------------
Summary of changes:
inet/getnameinfo.c | 587 +++++++++++++++++++++++++++++++---------------------
1 files changed, 347 insertions(+), 240 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug network/19573] res_nclose and __res_maybe_init disagree about name server initialization, breaking Hesiod
Date: Sat, 12 Nov 2016 06:40:00 -0000
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commit 0f9d26d14199e47e72d837dca429e3b5fd2276e7
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon May 2 15:25:20 2016 +0200
hesiod: Always use thread-local resolver state [BZ #19573]
The Hesiod implementation imported into glibc was enhanced
to support caller-supplied resolver states. But its only
consumer is nss_hesiod, and it supplies the thread-local
resolver state. Therefore, this commit changes the Hesiod
implementation to use the thread-local resolver state (_res)
directly. This fixes bug 19573 because the Hesiod
implementation no longer has to initialize and free any
resolver state.
To avoid any risk of interposition of ABI-incompatible Hesiod
function implementations, this commit marks the Hesiod functions
as hidden. (They were already hidden using a linker version
script.)
(cherry picked from commit 5018f16c6205404ba3aa7298dc8a3d45fbd46bfc)
(cherry picked from commit 2d1f6790183dabf54c5b05be97d3872dab720c83)
-----------------------------------------------------------------------
Summary of changes:
hesiod/Makefile | 2 +-
hesiod/hesiod.c | 85 ++++++++----------------------------
hesiod/hesiod.h | 30 +++++++++---
hesiod/hesiod_p.h | 22 +++++++--
hesiod/nss_hesiod/hesiod-grp.c | 8 +---
hesiod/nss_hesiod/hesiod-init.c | 38 ----------------
hesiod/nss_hesiod/hesiod-proto.c | 5 +--
hesiod/nss_hesiod/hesiod-pwd.c | 5 +--
hesiod/nss_hesiod/hesiod-service.c | 5 +--
hesiod/nss_hesiod/nss_hesiod.h | 20 --------
10 files changed, 64 insertions(+), 156 deletions(-)
delete mode 100644 hesiod/nss_hesiod/hesiod-init.c
delete mode 100644 hesiod/nss_hesiod/nss_hesiod.h
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To: glibc-bugs@sourceware.org
Subject: [Bug network/20031] nss_hesiod: Heap overflow in get_txt_records
Date: Sat, 12 Nov 2016 06:40:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 48148b3e5235ac0abe6e73d534e5454180f94be6
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon May 2 16:04:32 2016 +0200
hesiod: Avoid heap overflow in get_txt_records [BZ #20031]
(cherry picked from commit 8a03ccbb77f52ec4b55062eeedddb8daec1a33e4)
(cherry picked from commit 4c4b3cbb4638ec19de19c167d498e30fd67501ab)
-----------------------------------------------------------------------
Summary of changes:
hesiod/hesiod.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
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Subject: [Bug network/19865] Assertion failure or memory leak in _nss_dns_getcanonname_r
Date: Sat, 12 Nov 2016 06:41:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e4acddbc00a49dd3451a1b10635d35eb7c64b474
commit e4acddbc00a49dd3451a1b10635d35eb7c64b474
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Apr 11 10:55:43 2016 +0200
nss_dns: Fix assertion failure in _nss_dns_getcanonname_r [BZ #19865]
(cherry picked from commit d29fb41f4431ca35ea360498ef9d37558ce90d76)
(cherry picked from commit 49203a513f86e5238d43da23505a600bef1a5d7a)
-----------------------------------------------------------------------
Summary of changes:
resolv/nss_dns/dns-canon.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
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Subject: [Bug network/19830] nss_dns: should check RDATA length against buffer length
Date: Sat, 12 Nov 2016 06:41:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 5a7f88f0858b67a00c631850a71d7c320ca773ab
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Apr 27 15:11:41 2016 +0200
nss_dns: Validate RDATA length against packet length [BZ #19830]
In _nss_dns_getcanonname_r, a check for the availability of RR metadata
was missing as well.
(cherry picked from commit f749498fa53df9ead81e291cd9378d67483c2452)
(cherry picked from commit f233c608d11434aa4a802ded6acdcac1f092729f)
-----------------------------------------------------------------------
Summary of changes:
resolv/nss_dns/dns-canon.c | 16 +++++++++++++---
resolv/nss_dns/dns-host.c | 15 +++++++++++++++
2 files changed, 28 insertions(+), 3 deletions(-)
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Subject: [Bug malloc/19431] Deadlock between fflush, getdelim, and fork
Date: Sat, 12 Nov 2016 06:41:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e7758c56a1ed29443edd5fda8c0766bda416cd5f
commit e7758c56a1ed29443edd5fda8c0766bda416cd5f
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Apr 14 09:17:02 2016 +0200
malloc: Run fork handler as late as possible [BZ #19431]
Previously, a thread M invoking fork would acquire locks in this order:
(M1) malloc arena locks (in the registered fork handler)
(M2) libio list lock
A thread F invoking flush (NULL) would acquire locks in this order:
(F1) libio list lock
(F2) individual _IO_FILE locks
A thread G running getdelim would use this order:
(G1) _IO_FILE lock
(G2) malloc arena lock
After executing (M1), (F1), (G1), none of the threads can make progress.
This commit changes the fork lock order to:
(M'1) libio list lock
(M'2) malloc arena locks
It explicitly encodes the lock order in the implementations of fork,
and does not rely on the registration order, thus avoiding the deadlock.
(cherry picked from commit 29d794863cd6e03115d3670707cc873a9965ba92)
(cherry picked from commit 2a71cf409681b89ffb8892b35cac64de79b7adb8)
-----------------------------------------------------------------------
Summary of changes:
malloc/Makefile | 3 +-
malloc/arena.c | 58 ++----
.../timer_getoverr.c => malloc/malloc-internal.h | 30 +--
malloc/malloc.c | 1 +
malloc/tst-malloc-fork-deadlock.c | 220 ++++++++++++++++++++
manual/memory.texi | 8 -
sysdeps/mach/hurd/fork.c | 13 ++
sysdeps/nptl/fork.c | 13 +-
8 files changed, 276 insertions(+), 70 deletions(-)
copy sysdeps/unix/sysv/linux/timer_getoverr.c => malloc/malloc-internal.h
(57%)
create mode 100644 malloc/tst-malloc-fork-deadlock.c
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Subject: [Bug network/19862] resolv, nss_dns: Remove remaining logging of unexpected record types
Date: Sat, 12 Nov 2016 06:42:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 200001ce3f8e3c174ec77f63ef0b6075eb148fcd
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Apr 27 16:12:32 2016 +0200
resolv, nss_dns: Remove remaining syslog logging [BZ #19862]
The fix for bug 14841 only removed part of the logging.
(cherry picked from commit b9b026c9c00db1a1b5b4a3caa28162655a04a882)
(cherry picked from commit 1e51b4d367fcee5fc7767265e2b1469457ee64e1)
-----------------------------------------------------------------------
Summary of changes:
resolv/gethnamaddr.c | 20 --------------------
resolv/nss_dns/dns-host.c | 22 ----------------------
2 files changed, 0 insertions(+), 42 deletions(-)
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/19825] resolv: send_vc can return uninitialized data in second response to getaddrinfo
Date: Sat, 12 Nov 2016 06:42:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 06943eb86a410d875e4ee08d713ed51e67bd5b28
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Apr 27 14:26:47 2016 +0200
resolv: Always set *resplen2 out parameter in send_vc [BZ #19825]
In various error scenarios (for example, if the server closes the
TCP connection before sending the full response), send_vc can return
without resetting the *resplen2 value. This can pass uninitialized
or unexpected data to the caller.
(cherry picked from commit b9bdfa7c8fa22c944bb5f21a673dfd1f91b71c56)
(cherry picked from commit 075b2665b159491fdd17f5aee90d47fa7388ed6f)
-----------------------------------------------------------------------
Summary of changes:
resolv/res_send.c | 39 ++++++++++++++++++---------------------
1 files changed, 18 insertions(+), 21 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/19633] strfmon_l applies global locale to number formatting
Date: Sat, 12 Nov 2016 06:42:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 42e149d87ba1665ddb463e47ef106de8d522df5a
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Apr 4 15:18:13 2016 +0200
strfmon_l: Use specified locale for number formatting [BZ #19633]
(cherry picked from commit 985fc132f23dbb83de76c5af9e783ef1b5900148)
(cherry picked from commit 90c0f166e9fd6b2c7685437558cf7e8f8bc6876a)
-----------------------------------------------------------------------
Summary of changes:
include/printf.h | 4 +
locale/localeinfo.h | 21 +++++
stdio-common/printf_fp.c | 52 +++++++----
stdlib/Makefile | 6 +-
stdlib/strfmon_l.c | 5 +-
stdlib/tst-strfmon_l.c | 220 ++++++++++++++++++++++++++++++++++++++++++++++
6 files changed, 283 insertions(+), 25 deletions(-)
create mode 100644 stdlib/tst-strfmon_l.c
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Subject: [Bug build/19860] x86_64: compile errors for tst-audit10 and tst-auditmod10b
Date: Sat, 12 Nov 2016 06:42:00 -0000
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commit 6a04ea1a9a8586c737a71b1a1b55e15c51a25c1f
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Mar 25 11:11:42 2016 +0100
tst-audit10: Fix compilation on compilers without bit_AVX512F [BZ #19860]
[BZ# 19860]
* sysdeps/x86_64/tst-audit10.c (avx512_enabled): Always return
zero if the compiler does not provide the AVX512F bit.
(cherry picked from commit f327f5b47be57bc05a4077344b381016c1bb2c11)
(cherry picked from commit 4cf055a2a331b7361622dc9ac8993b59c6f0ef59)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/x86_64/tst-audit10.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
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Subject: [Bug network/14841] RRSIG confuses getaddrinfo: getaddrinfo*.gaih_getanswer: got type "46"
Date: Sat, 12 Nov 2016 06:42:00 -0000
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commit 200001ce3f8e3c174ec77f63ef0b6075eb148fcd
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Apr 27 16:12:32 2016 +0200
resolv, nss_dns: Remove remaining syslog logging [BZ #19862]
The fix for bug 14841 only removed part of the logging.
(cherry picked from commit b9b026c9c00db1a1b5b4a3caa28162655a04a882)
(cherry picked from commit 1e51b4d367fcee5fc7767265e2b1469457ee64e1)
-----------------------------------------------------------------------
Summary of changes:
resolv/gethnamaddr.c | 20 --------------------
resolv/nss_dns/dns-host.c | 22 ----------------------
2 files changed, 0 insertions(+), 42 deletions(-)
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Subject: [Bug network/19868] nss_dns: netent code does not skip over non-PTR records
Date: Sat, 12 Nov 2016 06:42:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 742bcfaa70ea522406dd046adafefa933d29ca50
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Apr 27 17:15:57 2016 +0200
nss_dns: Skip over non-PTR records in the netent code [BZ #19868]
This requires additional checks for the RDATA length and the
availability of record metadata.
(cherry picked from commit a12f9431b3808e78b9ed397e4fce7de69410d94d)
(cherry picked from commit 1e5ac8a1daa360cd9632e5056e4bdf29e18ac2c7)
-----------------------------------------------------------------------
Summary of changes:
resolv/nss_dns/dns-network.c | 20 ++++++++++++++++++--
1 files changed, 18 insertions(+), 2 deletions(-)
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Subject: [Bug network/19831] nss_dns: getaddrinfo returns uninitialized data when confronted with A/AAAA records of invalid size
Date: Sat, 12 Nov 2016 06:42:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit b7d81292bf651f176790011e83338a496dc9e778
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Apr 27 16:39:12 2016 +0200
nss_dns: Check address length before creating addrinfo result [BZ #19831]
Previously, we allocated room in the result space before the check,
leaving uninitialized data there in case the check failed.
This also consolidates the behavior between single (A or AAAA) and
dual (A and AAAA in parallel) queries. Single queries checked
the record length against the QTYPE, not the RRTYPE.
(cherry picked from commit 5e0c421cc07e2d06945b863ed3bb92395472705d)
(cherry picked from commit 730244f49ad8f46308f5513e58365eed370423cb)
-----------------------------------------------------------------------
Summary of changes:
resolv/nss_dns/dns-host.c | 59 +++++++++++++++++++++++++++++---------------
1 files changed, 39 insertions(+), 20 deletions(-)
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Subject: [Bug build/19269] tst-audit4 and tst-audit10 failures with gcc-6 on non avx machine
Date: Sat, 12 Nov 2016 06:43:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 3c94e6c28c770a0d51f50c927fe5cf1e7d8d5607
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Mar 7 16:00:25 2016 +0100
tst-audit4, tst-audit10: Compile AVX/AVX-512 code separately [BZ #19269]
This ensures that GCC will not use unsupported instructions before
the run-time check to ensure support.
(cherry picked from commit 3c0f7407eedb524c9114bb675cd55b903c71daaa)
(cherry picked from commit 7fa9775594b1592dfcdad5bc32ea449882ca9d9a)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/x86_64/Makefile | 8 ++--
.../hurd/syncfs.c => x86_64/tst-audit10-aux.c} | 28 ++++++++----
sysdeps/x86_64/tst-audit10.c | 34 +++------------
.../{generic/dl-irel.h => x86_64/tst-audit4-aux.c} | 28 ++++++++----
sysdeps/x86_64/tst-audit4.c | 45 +++++++++----------
5 files changed, 70 insertions(+), 73 deletions(-)
copy sysdeps/{mach/hurd/syncfs.c => x86_64/tst-audit10-aux.c} (59%)
copy sysdeps/{generic/dl-irel.h => x86_64/tst-audit4-aux.c} (58%)
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Subject: [Bug glob/19779] glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect NAME_MAX limit assumption (CVE-2016-1234)
Date: Sat, 12 Nov 2016 06:43:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 60b2487e0f0454a0f9db1f645df38f4183e010bc
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed May 4 12:09:35 2016 +0200
CVE-2016-1234: glob: Do not copy d_name field of struct dirent [BZ #19779]
Instead, we store the data we need from the return value of
readdir in an object of the new type struct readdir_result.
This type is independent of the layout of struct dirent.
(cherry picked from commit 5171f3079f2cc53e0548fc4967361f4d1ce9d7ea)
(cherry picked from commit c87db3fcbdf890990b44d956621763538c878cd3)
-----------------------------------------------------------------------
Summary of changes:
posix/bug-glob2.c | 14 ++-
posix/glob.c | 223 ++++++++++++++++++---------------
sysdeps/unix/sysv/linux/i386/glob64.c | 22 ++++
3 files changed, 159 insertions(+), 100 deletions(-)
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Subject: [Bug dynamic-link/19610] ldconfig -X removes stale symbolic links
Date: Sat, 12 Nov 2016 06:43:00 -0000
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commit b0c4dab125279680938a6fef5825a7c5dc979d19
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Mar 7 22:06:18 2016 +0100
ldconfig: Do not remove stale symbolic links with -X [BZ #19610]
(cherry picked from commit 920b35c92ed8f41796c090c2819434e56701da5b)
(cherry picked from commit c4294bd8620fabf0afddc2b85701371fafd40a6b)
-----------------------------------------------------------------------
Summary of changes:
elf/Makefile | 7 ++++-
elf/ldconfig.c | 7 ++--
elf/{tst-pathopt.sh => tst-ldconfig-X.sh} | 45 ++++++++++++++++++++++-------
3 files changed, 44 insertions(+), 15 deletions(-)
copy elf/{tst-pathopt.sh => tst-ldconfig-X.sh} (53%)
mode change 100755 => 100644
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Subject: [Bug dynamic-link/20069] dlsym() should not use malloc on failure (breaks Address Sanitizer initialization)
Date: Sat, 12 Nov 2016 06:44:00 -0000
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commit 5237dbe70306a55036334a4dbf3b7abdff0c8877
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed May 11 11:40:44 2016 +0200
Revert "Report dlsym, dlvsym lookup errors using dlerror [BZ #19509]"
This reverts commits 80f87443eed17838fe453f1f5406ccf5d3698c25
and a824d609581d5ee7544aabcbbc70e8da44b2b5b6.
See bug 20069. We can revisit this change once there has been a GCC
release with a fix for Address Sanitizer.
(cherry picked from commit 24e2b1cede1952d7d4411a3cafd25dd8593dab9f)
-----------------------------------------------------------------------
Summary of changes:
elf/Makefile | 4 +-
elf/dl-lookup.c | 1 +
elf/tst-dlsym-error.c | 114 -------------------------------------------------
3 files changed, 2 insertions(+), 117 deletions(-)
delete mode 100644 elf/tst-dlsym-error.c
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Subject: [Bug network/20112] sunrpc: stack (frame) overflow in Sun RPC clntudp_call (CVE-2016-4429)
Date: Sat, 12 Nov 2016 06:44:00 -0000
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commit a80b8ab9117b3e30bb56d913a5e60ead97117d6d
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon May 23 20:18:34 2016 +0200
CVE-2016-4429: sunrpc: Do not use alloca in clntudp_call [BZ #20112]
The call is technically in a loop, and under certain circumstances
(which are quite difficult to reproduce in a test case), alloca
can be invoked repeatedly during a single call to clntudp_call.
As a result, the available stack space can be exhausted (even
though individual alloca sizes are bounded implicitly by what
can fit into a UDP packet, as a side effect of the earlier
successful send operation).
(cherry picked from commit bc779a1a5b3035133024b21e2f339fe4219fb11c)
(cherry picked from commit bdce95930e1d9a7d013d1ba78740243491262879)
-----------------------------------------------------------------------
Summary of changes:
sunrpc/clnt_udp.c | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)
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Subject: [Bug localedata/19581] sr_* date_fmt string contains additional newline
Date: Sat, 12 Nov 2016 06:44:00 -0000
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commit be3ad4ee1b3481d31741415efc040cca72de26c2
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Feb 19 14:21:34 2016 +0100
Remove trailing newline from date_fmt in Serbian locales [BZ #19581]
(cherry picked from commit ff889b196575c2fbf6aa7130abb1ec862714ea4e)
(cherry picked from commit bbea74b29974d559604691441d12ea80b2abe919)
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 7 +++++++
localedata/locales/sr_ME | 2 +-
localedata/locales/sr_RS | 2 +-
localedata/locales/sr_RS@latin | 2 +-
4 files changed, 10 insertions(+), 3 deletions(-)
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Subject: [Bug dynamic-link/19509] dlsym, dlvsym do not report errors through dlerror when using RTLD_NEXT
Date: Sat, 12 Nov 2016 06:44:00 -0000
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commit 5237dbe70306a55036334a4dbf3b7abdff0c8877
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed May 11 11:40:44 2016 +0200
Revert "Report dlsym, dlvsym lookup errors using dlerror [BZ #19509]"
This reverts commits 80f87443eed17838fe453f1f5406ccf5d3698c25
and a824d609581d5ee7544aabcbbc70e8da44b2b5b6.
See bug 20069. We can revisit this change once there has been a GCC
release with a fix for Address Sanitizer.
(cherry picked from commit 24e2b1cede1952d7d4411a3cafd25dd8593dab9f)
-----------------------------------------------------------------------
Summary of changes:
elf/Makefile | 4 +-
elf/dl-lookup.c | 1 +
elf/tst-dlsym-error.c | 114 -------------------------------------------------
3 files changed, 2 insertions(+), 117 deletions(-)
delete mode 100644 elf/tst-dlsym-error.c
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/19633] strfmon_l applies global locale to number formatting
Date: Sat, 12 Nov 2016 06:44:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit a6bb6430afb72aaa362e508be98f7b7dd1bfd13e
Author: Stefan Liebler <stli@linux.vnet.ibm.com>
Date: Thu Apr 14 12:21:53 2016 +0200
Fix strfmon_l: Use specified locale for number formatting [BZ #19633]
The commit 985fc132f23dbb83de76c5af9e783ef1b5900148
"strfmon_l: Use specified locale for number formatting [BZ #19633]"
introduced an elf/check-abi-libc testfailure due to __printf_fp_l
on architectures which use sysdeps/ieee754/ldbl-opt/math_ldbl_opt.h.
This patch uses libc_hidden_def instead of ldbl_hidden_def.
The ldbl_strong_alias is removed due to the rename of ___printf_fp_l
to __printf_fp_l.
ChangeLog:
* stdio-common/printf_fp.c (__printf_fp_l):
Rename ___printf_fp_l to __printf_fp_l and
remove strong alias. Use libc_hidden_def instead
of ldbl_hidden_def macro.
(cherry picked from commit b1b8f5d89d06a994773e22ad4b7fe1036b37f8ab)
(cherry picked from commit a37d61a662027a5d92fa54ceb75cd3167d732b5f)
-----------------------------------------------------------------------
Summary of changes:
stdio-common/printf_fp.c | 11 +++++------
1 files changed, 5 insertions(+), 6 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug network/20010] getaddrinfo: Stack overflow in hostent translation (CVE-2016-3706)
Date: Sat, 12 Nov 2016 06:44:00 -0000
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commit 6fc2cd54ae7e045ed19033211a289bc6421743af
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Apr 29 10:35:34 2016 +0200
CVE-2016-3706: getaddrinfo: stack overflow in hostent conversion [BZ
#20010]
When converting a struct hostent response to struct gaih_addrtuple, the
gethosts macro (which is called from gaih_inet) used alloca, without
malloc fallback for large responses. This commit changes this code to
use calloc unconditionally.
This commit also consolidated a second hostent-to-gaih_addrtuple
conversion loop (in gaih_inet) to use the new conversion function.
(cherry picked from commit 4ab2ab03d4351914ee53248dc5aef4a8c88ff8b9)
(cherry picked from commit 1a8a7c12950a0026a3c406a7cb1608f96aa1460e)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/posix/getaddrinfo.c | 130 +++++++++++++++++++++++--------------------
1 files changed, 69 insertions(+), 61 deletions(-)
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Subject: [Bug dynamic-link/19509] dlsym, dlvsym do not report errors through dlerror when using RTLD_NEXT
Date: Sat, 12 Nov 2016 06:44:00 -0000
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit f141e27aba2e65cc1c556b8a616bfc6029fee2c2
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Mar 31 11:26:55 2016 +0200
Report dlsym, dlvsym lookup errors using dlerror [BZ #19509]
* elf/dl-lookup.c (_dl_lookup_symbol_x): Report error even if
skip_map != NULL.
* elf/tst-dlsym-error.c: New file.
* elf/Makefile (tests): Add tst-dlsym-error.
(tst-dlsym-error): Link against libdl.
(cherry picked from commit 7d45c163d00c88d5875a112343c4ea3e61349e6b)
(cherry picked from commit 80f87443eed17838fe453f1f5406ccf5d3698c25)
-----------------------------------------------------------------------
Summary of changes:
elf/Makefile | 4 +-
elf/dl-lookup.c | 1 -
elf/tst-dlsym-error.c | 113 +++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 116 insertions(+), 2 deletions(-)
create mode 100644 elf/tst-dlsym-error.c
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Subject: [Bug nptl/19703] Do not run malloc/libio fork handlers in a signal handler
Date: Sat, 12 Nov 2016 06:44:00 -0000
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commit d9bd52a8f845f1330d794be4e984fb1bdc587efb
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu May 12 08:54:17 2016 +0200
Increase fork signal safety for single-threaded processes [BZ #19703]
This provides a band-aid and addresses the scenario where fork is
called from a signal handler while the process is in the malloc
subsystem (or has acquired the libio list lock). It does not
address the general issue of async-signal-safety of fork;
multi-threaded processes are not covered, and some glibc
subsystems have fork handlers which are not async-signal-safe.
(cherry picked from commit 56290d6e762c1194547e73ff0b948cd79d3a1e03)
(cherry picked from commit 2143af6a47027c48d8dc168e255d8f527377bc56)
-----------------------------------------------------------------------
Summary of changes:
malloc/Makefile | 3 +-
malloc/tst-mallocfork2.c | 212 ++++++++++++++++++++++++++++++++++++++++++++++
sysdeps/nptl/fork.c | 53 ++++++++---
3 files changed, 252 insertions(+), 16 deletions(-)
create mode 100644 malloc/tst-mallocfork2.c
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Subject: [Bug libc/20111] struct sockaddr_storage cannot be aggregate-copied
Date: Sat, 12 Nov 2016 06:44:00 -0000
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--- Comment #16 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 5af60b38e45f490fde467b4db137fed153ad961b
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon May 23 19:43:09 2016 +0200
Make padding in struct sockaddr_storage explicit [BZ #20111]
This avoids aliasing issues with GCC 6 in -fno-strict-aliasing
mode. (With implicit padding, not all data is copied.)
This change makes it explicit that struct sockaddr_storage is
only 126 bytes large on m68k (unlike elsewhere, where we end up
with the requested 128 bytes). The new test case makes sure that
this does not happen on other architectures.
(cherry picked from commit 3375cfafa7961c6ae0e509c31c3b3cef9ad1f03d)
(cherry picked from commit f2225475118c8804b1b31731bdfb3f76eb179e6d)
-----------------------------------------------------------------------
Summary of changes:
bits/sockaddr.h | 5 +-
bits/socket.h | 8 +-
inet/Makefile | 4 +-
inet/tst-sockaddr.c | 125 ++++++++++++++++++++
sysdeps/mach/hurd/bits/socket.h | 8 +-
sysdeps/unix/bsd/bits/sockaddr.h | 5 +-
sysdeps/unix/sysv/linux/bits/socket.h | 8 +-
.../unix/sysv/linux/m68k/bits}/sockaddr.h | 5 +-
8 files changed, 152 insertions(+), 16 deletions(-)
create mode 100644 inet/tst-sockaddr.c
copy {bits => sysdeps/unix/sysv/linux/m68k/bits}/sockaddr.h (90%)
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/19230] A stream using fmemopen() yields different and incorrect results than one using fopen or stdout.
Date: Sat, 12 Nov 2016 06:45:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 4a003be3ae533aedb3f5c79424ba046f3bb0af77
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Apr 26 17:40:25 2016 -0300
libio: Update internal fmemopen position after write (BZ #20005)
Current GLIBC fmemopen fails with a simple testcase:
char buffer[500] = "x";
FILE *stream;
stream = fmemopen(buffer, 500, "r+");
fwrite("fish",sizeof(char),5,stream);
printf("pos-1:%ld\n",ftell(stream));
fflush(stream);
printf("pos-2:%ld\n",ftell(stream));
It returns:
pos-1:5
pos-2:0
Where it should return:
pos-1:5
pos-2:5
This is due the internal write function does not correctly update the
internal
object position state and then the seek operation returns a wrong value.
This
patch fixes it.
It fixes both BZ #20005 and BZ #19230 (marked as duplicated). A new test is
added to check for such case.
Tested on x86_64 and i686.
This is a backport of f9123b5003e62b6e54996076e860f23aee9a0593.
* libio/fmemopen.c (fmemopen_write): Update internal position after
write.
* stdio-common/Makefile (tests): Add tst-fmemopen4.c.
* stdio-common/tst-fmemopen4.c: New file..
(cherry picked from commit c2fba3b047c2fac50985a47ff96075b5d9078432)
-----------------------------------------------------------------------
Summary of changes:
libio/fmemopen.c | 6 +-
stdio-common/Makefile | 2 +-
.../tst-rwlock13.c => stdio-common/tst-fmemopen4.c | 41 ++++++++++----------
3 files changed, 25 insertions(+), 24 deletions(-)
copy nptl/tst-rwlock13.c => stdio-common/tst-fmemopen4.c (53%)
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Subject: [Bug nptl/19861] libpthread IFUNC resolver for fork can lead to crash
Date: Sat, 12 Nov 2016 06:45:00 -0000
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commit 7331d984691b31a1c43bae54f4596a37fd9e7dcb
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jun 1 07:14:42 2016 +0200
fork in libpthread cannot use IFUNC resolver [BZ #19861]
This commit only addresses the fork case, the vfork case has to be a
tail call, which is why the generic code needs an IFUNC resolver
there.
(cherry picked from commit f06f3f05b48c72e2c9b0fa78671f94fd22d67da8)
(cherry picked from commit 1915d6d182a55d1eb852643a78ac24bc17783fb0)
-----------------------------------------------------------------------
Summary of changes:
nptl/pt-fork.c | 43 ++++++++++---------------------------------
1 files changed, 10 insertions(+), 33 deletions(-)
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Subject: [Bug stdio/20012] libio: fmemopen append mode failure
Date: Sat, 12 Nov 2016 06:45:00 -0000
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commit 52affab7cc2787033713b73bbc2a9c412469012f
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Wed Apr 27 11:51:01 2016 -0300
libio: Fix fmemopen append mode failure (BZ# 20012)
The fmemopen implementation does not account the file position correctly in
append mode. The following example shows the failure:
===
int main ()
{
char buf[10] = "test";
FILE *fp = fmemopen (buf, 10, "a+");
fseek (fp, 0, SEEK_SET);
int gr;
if ((gr = getc (fp)) != 't' ||
(gr = getc (fp)) != 'e' ||
(gr = getc (fp)) != 's' ||
(gr = getc (fp)) != 't' ||
(gr = getc (fp)) != EOF)
{
printf ("%s: getc failed returned %i\n", __FUNCTION__, gr);
return 1;
}
return 0;
}
===
This is due both how read and write operation update the buffer position,
taking in consideration buffer lenght instead of maximum position defined
by the open mode. This patch fixes it and also fixes fseek not returning
EINVAL for invalid whence modes.
Tested on x86_64 and i686.
This is a backport of b65b205fbcabbb02463e31df17f5cabf7556f892.
[BZ #20012]
* libio/fmemopen.c (fmemopen_read): Use buffer maximum position, not
length to calculate the buffer to read.
(fmemopen_write): Set the buffer position based on bytes written.
(fmemopen_seek): Return EINVAL for invalid whence modes.
(cherry picked from commit 321e1cef26ccbece949b16622ef74c203bd8ecc6)
-----------------------------------------------------------------------
Summary of changes:
libio/fmemopen.c | 28 +++++-----
stdio-common/tst-fmemopen3.c | 118 +++++++++++++++++++++++++++++++++++++++++-
2 files changed, 132 insertions(+), 14 deletions(-)
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Subject: [Bug stdio/20005] fflush on a file opened with fmemopen resets position to 0
Date: Sat, 12 Nov 2016 06:45:00 -0000
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commit 4a003be3ae533aedb3f5c79424ba046f3bb0af77
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Apr 26 17:40:25 2016 -0300
libio: Update internal fmemopen position after write (BZ #20005)
Current GLIBC fmemopen fails with a simple testcase:
char buffer[500] = "x";
FILE *stream;
stream = fmemopen(buffer, 500, "r+");
fwrite("fish",sizeof(char),5,stream);
printf("pos-1:%ld\n",ftell(stream));
fflush(stream);
printf("pos-2:%ld\n",ftell(stream));
It returns:
pos-1:5
pos-2:0
Where it should return:
pos-1:5
pos-2:5
This is due the internal write function does not correctly update the
internal
object position state and then the seek operation returns a wrong value.
This
patch fixes it.
It fixes both BZ #20005 and BZ #19230 (marked as duplicated). A new test is
added to check for such case.
Tested on x86_64 and i686.
This is a backport of f9123b5003e62b6e54996076e860f23aee9a0593.
* libio/fmemopen.c (fmemopen_write): Update internal position after
write.
* stdio-common/Makefile (tests): Add tst-fmemopen4.c.
* stdio-common/tst-fmemopen4.c: New file..
(cherry picked from commit c2fba3b047c2fac50985a47ff96075b5d9078432)
-----------------------------------------------------------------------
Summary of changes:
libio/fmemopen.c | 6 +-
stdio-common/Makefile | 2 +-
.../tst-rwlock13.c => stdio-common/tst-fmemopen4.c | 41 ++++++++++----------
3 files changed, 25 insertions(+), 24 deletions(-)
copy nptl/tst-rwlock13.c => stdio-common/tst-fmemopen4.c (53%)
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Subject: [Bug libc/19648] test-skeleton.c: Do not set RLIMIT_DATA
Date: Sat, 12 Nov 2016 06:45:00 -0000
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commit 36234ceda21820d2f874067553e7faae763a40cf
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Mar 7 13:48:47 2016 +0100
test-skeleton.c: Do not set RLIMIT_DATA [BZ #19648]
With older kernels, it is mostly ineffective because it causes malloc
to switch from sbrk to mmap (potentially invalidating malloc testing
compared to what real appliations do). With newer kernels which
have switched to enforcing RLIMIT_DATA for mmap as well, some test
cases will fail in an unintended fashion because the limit which was
set previously does not include room for all mmap mappings.
(cherry picked from commit 900056024b75eae8b550d7fee1dec9e71f28344e)
(cherry picked from commit e6eea05ee7bc49dbe9531620595fd7f6ca587dcd)
-----------------------------------------------------------------------
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test-skeleton.c | 17 -----------------
1 files changed, 0 insertions(+), 17 deletions(-)
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Subject: [Bug libc/20277] $dp is not initialized correctly in sysdeps/hppa/start.S
Date: Sat, 12 Nov 2016 06:46:00 -0000
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commit ac9ca0ac4722f49198d092b96a1d359d2aad803c
Author: John David Anglin <dave.anglin@bell.net>
Date: Tue Jun 21 18:35:22 2016 -0400
hppa: fix loading of global pointer in _start [BZ #20277]
The patched change fixes a regression for executables compiled with the
-p option and linked with gcrt1.o. The executables crash on startup.
This regression was introduced in 2.22 and was noticed in the gcc
testsuite.
(cherry picked from commit 9765ffa71030efd8bb4f2ea4ed6e020fcb4bb714)
(cherry picked from commit 0903610fdc31efbea4309f69e5ee3e1d4f7ed29e)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/hppa/start.S | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
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Subject: [Bug malloc/20370] malloc: Arena free list management is still racy (incorrect fix in bug 19243)
Date: Sat, 12 Nov 2016 06:46:00 -0000
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commit 82b0c63dad2c34183ad26f35891a05a6a1c09462
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 2 12:24:50 2016 +0200
malloc: Preserve arena free list/thread count invariant [BZ #20370]
It is necessary to preserve the invariant that if an arena is
on the free list, it has thread attach count zero. Otherwise,
when arena_thread_freeres sees the zero attach count, it will
add it, and without the invariant, an arena could get pushed
to the list twice, resulting in a cycle.
One possible execution trace looks like this:
Thread 1 examines free list and observes it as empty.
Thread 2 exits and adds its arena to the free list,
with attached_threads == 0).
Thread 1 selects this arena in reused_arena (not from the free list).
Thread 1 increments attached_threads and attaches itself.
(The arena remains on the free list.)
Thread 1 exits, decrements attached_threads,
and adds the arena to the free list.
The final step creates a cycle in the usual way (by overwriting the
next_free member with the former list head, while there is another
list item pointing to the arena structure).
tst-malloc-thread-exit exhibits this issue, but it was only visible
with a debugger because the incorrect fix in bug 19243 removed
the assert from get_free_list.
(cherry picked from commit f88aab5d508c13ae4a88124e65773d7d827cd47b)
(cherry picked from commit 026671037948fd31009243a2173278dfa0ac9b25)
-----------------------------------------------------------------------
Summary of changes:
malloc/arena.c | 41 ++++++++++++++++++++++++++++++++++++-----
1 files changed, 36 insertions(+), 5 deletions(-)
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Subject: [Bug nptl/20452] Addition of sysdep.o to libpthread.a breaks relinking libpthread.a
Date: Sat, 12 Nov 2016 06:46:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 2b1222a9337b2f1fc6ce8b9704ebe5265fa592d6
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Aug 17 14:57:00 2016 +0200
Do not override objects in libc.a in other static libraries [BZ #20452]
With this change, we no longer add sysdep.o and similar objects which
are present in libc.a to other static libraries.
(cherry picked from commit d9067fca40b8aac156d73cfa44d6875813555a6c)
(cherry picked from commit 3a97372dbe373e02cb1d4053a449d246c32cf454)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/ia64/nptl/Makefile | 1 +
sysdeps/mips/Makefile | 1 +
sysdeps/mips/nptl/Makefile | 1 +
sysdeps/s390/nptl/Makefile | 1 +
sysdeps/unix/alpha/Makefile | 1 +
sysdeps/unix/sysv/linux/alpha/Makefile | 1 +
sysdeps/unix/sysv/linux/i386/Makefile | 1 +
sysdeps/unix/sysv/linux/ia64/Makefile | 1 +
sysdeps/unix/sysv/linux/microblaze/Makefile | 3 ++-
sysdeps/unix/sysv/linux/powerpc/Makefile | 2 ++
sysdeps/unix/sysv/linux/s390/Makefile | 1 +
sysdeps/unix/sysv/linux/sparc/Makefile | 2 ++
sysdeps/unix/sysv/linux/tile/Makefile | 1 +
13 files changed, 16 insertions(+), 1 deletions(-)
--
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/19243] reused_arena can pick an arena on the free list, leading to an assertion failure and reference count corruption
Date: Sat, 12 Nov 2016 06:46:00 -0000
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=82b0c63dad2c34183ad26f35891a05a6a1c09462
commit 82b0c63dad2c34183ad26f35891a05a6a1c09462
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Aug 2 12:24:50 2016 +0200
malloc: Preserve arena free list/thread count invariant [BZ #20370]
It is necessary to preserve the invariant that if an arena is
on the free list, it has thread attach count zero. Otherwise,
when arena_thread_freeres sees the zero attach count, it will
add it, and without the invariant, an arena could get pushed
to the list twice, resulting in a cycle.
One possible execution trace looks like this:
Thread 1 examines free list and observes it as empty.
Thread 2 exits and adds its arena to the free list,
with attached_threads == 0).
Thread 1 selects this arena in reused_arena (not from the free list).
Thread 1 increments attached_threads and attaches itself.
(The arena remains on the free list.)
Thread 1 exits, decrements attached_threads,
and adds the arena to the free list.
The final step creates a cycle in the usual way (by overwriting the
next_free member with the former list head, while there is another
list item pointing to the arena structure).
tst-malloc-thread-exit exhibits this issue, but it was only visible
with a debugger because the incorrect fix in bug 19243 removed
the assert from get_free_list.
(cherry picked from commit f88aab5d508c13ae4a88124e65773d7d827cd47b)
(cherry picked from commit 026671037948fd31009243a2173278dfa0ac9b25)
-----------------------------------------------------------------------
Summary of changes:
malloc/arena.c | 41 ++++++++++++++++++++++++++++++++++++-----
1 files changed, 36 insertions(+), 5 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/16907] <argp.h> compiled with --std=cXX disables __attribute__
Date: Sat, 12 Nov 2016 06:47:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=15463136aeca3fea7d41a63b1d5d28110c87f741
commit 15463136aeca3fea7d41a63b1d5d28110c87f741
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 18 11:15:42 2016 +0200
argp: Do not override GCC keywords with macros [BZ #16907]
glibc provides fallback definitions already. It is not necessary to
suppress warnings for unknown attributes because GCC does this
automatically for system headers.
This commit does not sync with gnulib because gnulib has started to use
_GL_* macros in the header file, which are arguably in the gnulib
implementation space and not suitable for an installed glibc header
file.
(cherry picked from commit 2c820533c61fed175390bc6058afbbe42d2edc37)
(cherry picked from commit a86b1fac2883617c24d719af125c473635bb5ac5)
-----------------------------------------------------------------------
Summary of changes:
argp/argp-fmtstream.h | 19 ++++---------------
argp/argp.h | 42 ++----------------------------------------
2 files changed, 6 insertions(+), 55 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug stdio/20222] fopencookie: Mangle function pointers
Date: Sat, 12 Nov 2016 06:47:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 93342bced2f8d48291db8a274fe43d344ba1a0dc
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Jun 11 12:07:14 2016 +0200
fopencookie: Mangle function pointers stored on the heap [BZ #20222]
(cherry picked from commit 983fd5c41ab7e5a5c33922259ca1ac99b3b413f8)
(cherry picked from commit 9e9fcd095a9417acd28645946bd6e35bd3cbc194)
-----------------------------------------------------------------------
Summary of changes:
libio/iofopncook.c | 49 +++++++++++++++++++++++++++++++++++--------------
1 files changed, 35 insertions(+), 14 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20357] Incorrect cos result for 1.5174239687223976
Date: Sat, 12 Nov 2016 06:47:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 2286e84a642ddeef1df3c485cd63ce354d266140
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Mon Jul 18 22:33:09 2016 +0530
Fix cos computation for multiple precision fallback (bz #20357)
During the sincos consolidation I made two mistakes, one was a logical
error due to which cos(0x1.8475e5afd4481p+0) returned
sin(0x1.8475e5afd4481p+0) instead.
The second issue was an error in negating inputs for the correct
quadrants for sine. I could not find a suitable test case for this
despite running a program to search for such an input for a couple of
hours.
Following patch fixes both issues. Tested on x86_64. Thanks to Matt
Clay for identifying the issue.
[BZ #20357]
* sysdeps/ieee754/dbl-64/s_sin.c (sloww): Fix up condition
to call __mpsin/__mpcos and to negate values.
* math/auto-libm-test-in: Add test.
* math/auto-libm-test-out: Regenerate.
(cherry picked from commit cbf88869edced4b23d792d95a8626e35b831df35)
(cherry picked from commit 422facff9f2c4972e2dc46090a704d11b840b0c0)
-----------------------------------------------------------------------
Summary of changes:
math/auto-libm-test-in | 3 +
math/auto-libm-test-out | 207 ++++++++++++++++++++++++++++++++++++++++
sysdeps/ieee754/dbl-64/s_sin.c | 4 +-
3 files changed, 212 insertions(+), 2 deletions(-)
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Subject: [Bug nss/20237] nss_db: get*ent segfaults without preceding set*ent
Date: Sat, 12 Nov 2016 06:47:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1ad4b4277f6f9c9c1d124357ab19d26dee61eb80
commit 1ad4b4277f6f9c9c1d124357ab19d26dee61eb80
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Jun 11 12:12:56 2016 +0200
nss_db: Fix initialization of iteration position [BZ #20237]
When get*ent is called without a preceding set*ent, we need
to set the initial iteration position in get*ent.
Reproducer: Add “services: db files” to /etc/nsswitch.conf, then run
“perl -e getservent”. It will segfault before this change, and exit
silently after it.
(cherry picked from commit 31d0a4fa646db8b8c97ce24e0ec0a7b73de4fca1)
(cherry picked from commit 79ad3fa2b1f38997be255d4eb709da928b66796a)
-----------------------------------------------------------------------
Summary of changes:
nss/nss_db/db-XXX.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/20284] malloc: Corrupt arena avoidance causes unnecessary mmap fallbacks
Date: Sat, 12 Nov 2016 06:47:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 3f97c0cafa1d661fe2ffa946c215f613beb32cd6
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jun 21 21:29:21 2016 +0200
malloc: Avoid premature fallback to mmap [BZ #20284]
Before this change, the while loop in reused_arena which avoids
returning a corrupt arena would never execute its body if the selected
arena were not corrupt. As a result, result == begin after the loop,
and the function returns NULL, triggering fallback to mmap.
(cherry picked from commit a3b473373ee43a292f5ec68a7fda6b9cfb26a9b0)
(cherry picked from commit a69d26143b80cb1927481509279577c57bc22ba4)
-----------------------------------------------------------------------
Summary of changes:
malloc/arena.c | 10 ++++------
1 files changed, 4 insertions(+), 6 deletions(-)
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>From glibc-bugs-return-35039-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 12 06:47:18 2016
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Subject: [Bug nis/20262] _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
Date: Sat, 12 Nov 2016 06:47:00 -0000
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commit f7076e089854bbbce413dd9a832d3f39515d0d45
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Jun 16 12:44:29 2016 +0200
Return proper status from _nss_nis_initgroups_dyn (bug 20262)
(cherry picked from commit 73fb56a4d51fd4437e4cde6dd3c8077a610f88a8)
(cherry picked from commit 395b1b9cbfda75fcdef0a9654d7ef6bf8bf7db11)
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Summary of changes:
nis/nss_nis/nis-initgroups.c | 16 +++++++++++-----
1 files changed, 11 insertions(+), 5 deletions(-)
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>From glibc-bugs-return-35035-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 12 06:47:01 2016
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Subject: [Bug libc/20435] Missing unwind info in __startcontext causes infinite loop in _Unwind_Backtrace (CVE-2016-6323)
Date: Sat, 12 Nov 2016 06:47:00 -0000
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit cafa0319f8ff701b7edd56e3e244e79abcf84748
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Aug 18 11:38:28 2016 +0200
arm: mark __startcontext as .cantunwind (bug 20435)
__startcontext marks the bottom of the call stack of the contexts created
by makecontext.
(cherry picked from commit 9e2ff6c9cc54c0b4402b8d49e4abe7000fde7617)
Also includes the NEWS update, cherry-picked from commits
056dd72af83f5459ce6d545a49dea6dba7d635dc and
4d047efdbc55b0d68947cde682e5363d16a66294.
(cherry picked from commit 23446cad92195d8c50092410b4f72ca7f6d1d2f1)
-----------------------------------------------------------------------
Summary of changes:
sysdeps/unix/sysv/linux/arm/setcontext.S | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)
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>From glibc-bugs-return-35042-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 12 23:49:37 2016
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From: "suckfish at ihug dot co.nz" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20813] New: pthread_exit is inconsistent between libc and libpthread
Date: Sat, 12 Nov 2016 23:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20813
Bug ID: 20813
Summary: pthread_exit is inconsistent between libc and
libpthread
Product: glibc
Version: 2.23
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: suckfish at ihug dot co.nz
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The single-threaded C++ program below compiles with or without -lpthread, but
behaves differently.
The issue appears to be that libc.so provides an implementation of
pthread_exit() that does not do stack-unwinding, but the libpthread.so version
does do stack unwinding.
I believe that either behaviour complies with the standards, but it would be
nice if glibc was consistent in its behaviour.
$ g++ -o temp temp.cc -pthread && ./temp
Hi there!
$ g++ -o temp temp.cc && ./temp
(no output)
This is Fedora glibc-2.23.1-10.fc24.x86_64
-----------------------------
#include <pthread.h>
#include <stdio.h>
struct Foo {
~Foo() {
printf("Hi there!\n");
}
};
int main()
{
Foo foo;
pthread_exit(NULL);
return 0;
}
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>From glibc-bugs-return-35043-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 13 15:03:57 2016
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From: "belkacem77 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/18812] kab_DZ: new Kabyle Algeria locale
Date: Sun, 13 Nov 2016 15:03:00 -0000
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Belkacem Mohammed <belkacem77 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |belkacem77 at gmail dot com
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>From glibc-bugs-return-35044-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 14 12:32:53 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/16628] Segfault after a binary without pthread dlopen()s a library linked with pthread
Date: Mon, 14 Nov 2016 12:32:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
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Subject: [Bug dynamic-link/20817] New: dlerror uses strerror in a thread-unsafe manner
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https://sourceware.org/bugzilla/show_bug.cgi?id=20817
Bug ID: 20817
Summary: dlerror uses strerror in a thread-unsafe manner
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Flags: security-
dlerror does this:
n = __asprintf (&buf, "%s%s%s: %s",
result->objname,
result->objname[0] == '\0' ? "" : ": ",
_(result->errstring),
strerror (result->errcode));
strerror is not thread-safe, and the could should assign errno and use %m.
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>From glibc-bugs-return-35046-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 14 13:19:53 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20817] dlerror uses strerror in a thread-unsafe manner
Date: Mon, 14 Nov 2016 13:19:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
As long as the errcode is in range the call is thread-safe.
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>From glibc-bugs-return-35047-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 14 13:40:02 2016
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Subject: [Bug libc/19239] Including stdlib.h ends up with macros major and minor being defined
Date: Mon, 14 Nov 2016 13:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19239
--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 809b72df6c90303aa3622a28f2837ec6c518290d (commit)
from 14f95a420313ee745b80fe71a0fe6f61b46b327c (commit)
Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=809b72df6c90303aa3622a28f2837ec6c518290d
commit 809b72df6c90303aa3622a28f2837ec6c518290d
Author: Zack Weinberg <zackw@panix.com>
Date: Mon Nov 14 08:34:59 2016 -0500
[BZ #19239] Issue deprecation warnings on macro expansion.
By using __glibc_macro_warning instead of __attribute_deprecated__,
we get the deprecation warnings whenever the macros are expanded,
not just when they compile to a function call. This is important
for unintentional uses like the test case in #19239 (C++ var(value)
initialization syntax, with a variable named "major"). It's also
simpler, because __REDIRECT is no longer required.
* misc/sys/sysmacros.h (__SYSMACROS_DM, __SYSMACROS_DM1): New macros.
(__SYSMACROS_DEPRECATION_MSG, __SYSMACROS_FST_DECL_TEMPL)
(__SYSMACROS_FST_IMPL_TEMPL): Delete.
(major, minor, makedev): Use __SYSMACROS_DM in definition, instead
of redirected function names.
* misc/sys/cdefs.h (__glibc_macro_warning): Activate for clang >= 3.5
as well. Document that MESSAGE must be a single string literal.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 +++++++++
misc/sys/cdefs.h | 7 ++++-
misc/sys/sysmacros.h | 56 ++++++++++++++++++++-----------------------------
3 files changed, 39 insertions(+), 35 deletions(-)
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>From glibc-bugs-return-35048-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 02:25:22 2016
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From: "acsawdey at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20822] New: race condition in __lll_unlock_elision on powerpc
Date: Tue, 15 Nov 2016 02:25:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20822
Bug ID: 20822
Summary: race condition in __lll_unlock_elision on powerpc
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: acsawdey at gcc dot gnu.org
CC: drepper.fsp at gmail dot com, sjmunroe at us dot ibm.com
Target Milestone: ---
Target: ppc64le
The update of *adapt_count after the release of the lock causes a race
condition. Mongodb hit this on Ubuntu 16.04 with 2.23. Thread A unlocks, thread
B continues and returns, destroying mutex on stack, then gets into another
function, thread A writes to *adapt_count and corrupts stack.
I changed the value that gets written here and the bytes written to the stack
changed with it, proving that this is where the issue lies. The window is very
narrow and requires that the machine be in smt mode, so likely the two threads
have to be on the same core in order to hit this.
int
__lll_unlock_elision (int *lock, short *adapt_count, int pshared)
{
/* When the lock was free we're in a transaction. */
if (*lock == 0)
__libc_tend (0);
else
{
lll_unlock ((*lock), pshared);
/* Update the adapt count AFTER completing the critical section.
Doing this here prevents unneeded stalling when entering
a critical section. Saving about 8% runtime on P8. */
if (*adapt_count > 0)
(*adapt_count)--;
}
return 0;
}
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>From glibc-bugs-return-35049-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 02:52:13 2016
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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>From glibc-bugs-return-35050-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 07:43:30 2016
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
Date: Tue, 15 Nov 2016 07:43:00 -0000
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Adam Conrad <adconrad at 0c3 dot net> changed:
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>From glibc-bugs-return-35051-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 11:57:54 2016
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From: "superherowolverine-sourcewareorg at yahoo dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/14085] en_NL: new locale (English language for the Netherlands)
Date: Tue, 15 Nov 2016 11:57:00 -0000
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Robertino <superherowolverine-sourcewareorg at yahoo dot com> changed:
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| |reorg at yahoo dot com
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>From glibc-bugs-return-35052-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 12:12:10 2016
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Subject: [Bug localedata/14085] en_NL: new locale (English language for the Netherlands)
Date: Tue, 15 Nov 2016 12:12:00 -0000
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--- Comment #10 from Pander <pander at users dot sourceforge.net> ---
This Thursday, at the 2016 fall conference of NLUUG, there will be a talk on
this locale. The locale will be discussed in all its details amongst an
audience of expert users to validate this locale and get consensus and support.
Minor changes will be made (some are already planned for the version on
GitHub). A new patch will be send to glibc via this issue early next week.
See also http://bit.ly/2gd1ZBu
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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https://sourceware.org/bugzilla/show_bug.cgi?id=20822
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>From glibc-bugs-return-35054-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 14:29:25 2016
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From: "infinity0 at pwned dot gg" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug network/20826] New: Tests fail on hosts without network access
Date: Tue, 15 Nov 2016 14:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20826
Bug ID: 20826
Summary: Tests fail on hosts without network access
Product: glibc
Version: 2.25
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: infinity0 at pwned dot gg
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Created attachment 9637
--> https://sourceware.org/bugzilla/attachment.cgi?id=9637&action=edit
Don't condition failure of double-dot-FQDN on single-dot-FQDN
Hi, our build machines on tests.reproducible-builds.org completely block
network access during the build. As a result, posix/tst-getaddrinfo.c fails the
build:
https://tests.reproducible-builds.org/debian/rbuild/unstable/amd64/glibc_2.24-5.rbuild.log.gz
The attached patch fixes the problem by having the test unconditionally check
that names with two trailing dots fail to resolve.
By contrast, the existing code conditionally does this only if the
one-trailing-dot version successfully resolves, and requires there be at least
one successful resolution. I don't understand the point of this, and it's not
clear from #16469 (the bug the test was introduced for) why this should be the
case.
If I understand correctly, normally systems "resolve" localhost via a local
alias in nsswitch/getent, bypassing getaddrinfo completely. So it should not be
required to successfully resolve "localhost." anyways.
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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>From glibc-bugs-return-35059-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 19:29:37 2016
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Subject: [Bug libc/20662] checking whether x86_64-pc-linux-gnu-gcc implicitly enables -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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commit c7409aded44634411a19b0b7178b7faa237835e6
Author: Denis Kaganovich <mahatma@eu.by>
Date: Thu Oct 20 22:01:39 2016 +0200
configure: accept __stack_chk_fail_local for ssp support too [BZ #20662]
When glibc is compiled with gcc 6.2 that has been configured with
--enable-default-pie and --enable-default-ssp, the configure script
fails to detect that the compiler has ssp turned on by default when
being built for i686-linux-gnu.
This is because gcc is emitting __stack_chk_fail_local but the
script is only looking for __stack_chk_fail. Support both.
Example output:
checking whether x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed
implicitly enables -fstack-protector... no
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
configure | 8 +++++---
configure.ac | 8 +++++---
3 files changed, 19 insertions(+), 6 deletions(-)
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Subject: [Bug libc/20662] checking whether x86_64-pc-linux-gnu-gcc implicitly enables -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
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commit a6a59e99d1249dc386d0a042c39e3860fbb7b6b6
Author: Denis Kaganovich <mahatma@eu.by>
Date: Thu Oct 20 22:01:39 2016 +0200
configure: accept __stack_chk_fail_local for ssp support too [BZ #20662]
When glibc is compiled with gcc 6.2 that has been configured with
--enable-default-pie and --enable-default-ssp, the configure script
fails to detect that the compiler has ssp turned on by default when
being built for i686-linux-gnu.
This is because gcc is emitting __stack_chk_fail_local but the
script is only looking for __stack_chk_fail. Support both.
Example output:
checking whether x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed
implicitly enables -fstack-protector... no
(cherry picked from commit c7409aded44634411a19b0b7178b7faa237835e6)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
configure | 8 +++++---
configure.ac | 8 +++++---
3 files changed, 19 insertions(+), 6 deletions(-)
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commit 2bdb3d2ee19a6ac61da0a398b10db380e9c92959
Author: Denis Kaganovich <mahatma@eu.by>
Date: Thu Oct 20 22:01:39 2016 +0200
configure: accept __stack_chk_fail_local for ssp support too [BZ #20662]
When glibc is compiled with gcc 6.2 that has been configured with
--enable-default-pie and --enable-default-ssp, the configure script
fails to detect that the compiler has ssp turned on by default when
being built for i686-linux-gnu.
This is because gcc is emitting __stack_chk_fail_local but the
script is only looking for __stack_chk_fail. Support both.
Example output:
checking whether x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed
implicitly enables -fstack-protector... no
(cherry picked from commit c7409aded44634411a19b0b7178b7faa237835e6)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
configure | 8 +++++---
configure.ac | 8 +++++---
3 files changed, 19 insertions(+), 6 deletions(-)
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Subject: [Bug libc/20662] checking whether x86_64-pc-linux-gnu-gcc implicitly enables -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit e474f526b4ece48cc081a4434b165b3c9082a360
Author: Denis Kaganovich <mahatma@eu.by>
Date: Thu Oct 20 22:01:39 2016 +0200
configure: accept __stack_chk_fail_local for ssp support too [BZ #20662]
When glibc is compiled with gcc 6.2 that has been configured with
--enable-default-pie and --enable-default-ssp, the configure script
fails to detect that the compiler has ssp turned on by default when
being built for i686-linux-gnu.
This is because gcc is emitting __stack_chk_fail_local but the
script is only looking for __stack_chk_fail. Support both.
Example output:
checking whether x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed
implicitly enables -fstack-protector... no
(cherry picked from commit c7409aded44634411a19b0b7178b7faa237835e6)
(cherry picked from commit a6a59e99d1249dc386d0a042c39e3860fbb7b6b6)
-----------------------------------------------------------------------
Summary of changes:
configure | 8 +++++---
configure.ac | 8 +++++---
2 files changed, 10 insertions(+), 6 deletions(-)
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Subject: [Bug libc/20662] checking whether x86_64-pc-linux-gnu-gcc implicitly enables -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
Date: Tue, 15 Nov 2016 19:33:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit caafe2b2612be88046d7bad4da42dbc2b07fbcd7
Author: Denis Kaganovich <mahatma@eu.by>
Date: Thu Oct 20 22:01:39 2016 +0200
configure: accept __stack_chk_fail_local for ssp support too [BZ #20662]
When glibc is compiled with gcc 6.2 that has been configured with
--enable-default-pie and --enable-default-ssp, the configure script
fails to detect that the compiler has ssp turned on by default when
being built for i686-linux-gnu.
This is because gcc is emitting __stack_chk_fail_local but the
script is only looking for __stack_chk_fail. Support both.
Example output:
checking whether x86_64-pc-linux-gnu-gcc -m32 -Wl,-O1 -Wl,--as-needed
implicitly enables -fstack-protector... no
(cherry picked from commit c7409aded44634411a19b0b7178b7faa237835e6)
(cherry picked from commit 2bdb3d2ee19a6ac61da0a398b10db380e9c92959)
-----------------------------------------------------------------------
Summary of changes:
configure | 8 +++++---
configure.ac | 8 +++++---
2 files changed, 10 insertions(+), 6 deletions(-)
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>From glibc-bugs-return-35064-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 19:38:22 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20662] checking whether x86_64-pc-linux-gnu-gcc implicitly enables -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
Date: Tue, 15 Nov 2016 19:38:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #11 from Mike Frysinger <vapier at gentoo dot org> ---
i've pushed it to master & 2.24 & 2.23 branches. thanks!
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>From glibc-bugs-return-35065-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 20:57:21 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/11235] MS_* constants missing from <sys/mount.h>
Date: Tue, 15 Nov 2016 20:57:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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commit 6ab707ba03605e11677e92db84fb65948c2fe908
Author: Rical Jasan <ricaljasan@pacific.net>
Date: Sun Nov 13 00:29:27 2016 -0800
manual: Remove non-existent mount options S_IMMUTABLE and S_APPEND [BZ
#11235]
These were removed in 2010, while addressing [BZ #11235].
This commit removes their documentation from the manual.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
manual/sysinfo.texi | 14 --------------
2 files changed, 5 insertions(+), 14 deletions(-)
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>From glibc-bugs-return-35066-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 15 21:41:07 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
Date: Tue, 15 Nov 2016 21:41:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
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>From glibc-bugs-return-35067-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 09:49:52 2016
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From: "infinity0 at pwned dot gg" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/20826] Tests fail on hosts without network access
Date: Wed, 16 Nov 2016 09:49:00 -0000
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--- Comment #1 from infinity0 at pwned dot gg ---
See also https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=844420
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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Stefan Liebler <stli at linux dot vnet.ibm.com> changed:
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>From glibc-bugs-return-35069-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 13:18:56 2016
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> changed:
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>From glibc-bugs-return-35070-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 14:07:41 2016
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Subject: [Bug build/20518] Compilation Fails on x86_64 when ssse3 / avx is enabled and _FORTIFY_SOURCE is not set
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
We could not reproduce this.
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>From glibc-bugs-return-35071-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 17:01:29 2016
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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Rajalakshmi <raji at linux dot vnet.ibm.com> changed:
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--- Comment #1 from Rajalakshmi <raji at linux dot vnet.ibm.com> ---
Patch posted in libc-alpha.
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>From glibc-bugs-return-35072-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 18:07:54 2016
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Subject: [Bug libc/20829] New: crypt snprintf namespace
Date: Wed, 16 Nov 2016 18:07:00 -0000
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Bug ID: 20829
Summary: crypt snprintf namespace
Product: glibc
Version: 2.24
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Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
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crypt brings in references to snprintf, but crypt is in XPG3 and XPG4 and
snprintf isn't.
[initial] crypt -> [libcrypt.a(crypt-entry.o)] __sha256_crypt ->
[libcrypt.a(sha256-crypt.o)] snprintf
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>From glibc-bugs-return-35073-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 22:48:30 2016
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Subject: [Bug libc/20829] crypt snprintf namespace
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=61158ffa9a17476d88aaf4a833d13b12f1c51387
commit 61158ffa9a17476d88aaf4a833d13b12f1c51387
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 16 22:46:48 2016 +0000
Fix crypt snprintf namespace (bug 20829).
Extending linknamespace tests to cover libcrypt showed that crypt
brings in references to snprintf, but is in XPG3 and XPG4 which don't
have snprintf. This patch fixes it to use __snprintf instead,
exporting __snprintf from libc.so at version GLIBC_PRIVATE and adding
libc_hidden_proto / libc_hidden_def accordingly.
Tested for x86_64 and x86, in conjunction with the testsuite changes
to enable linknamespace testing for libdl and libcrypt. Also tested
(compilation only) for powerpc to make sure there were no problem
interactions with the optional-long-double handling for snprintf.
[BZ #20829]
* stdio-common/Versions (__snprintf): Add to version
GLIBC_PRIVATE.
* include/stdio.h (__snprintf): Use libc_hidden_proto.
* stdio-common/snprintf.c (__snprintf): Use libc_hidden_def.
* crypt/sha256-crypt.c (__sha256_crypt_r): Use __snprintf instead
of snprintf.
* crypt/sha512-crypt.c (__sha512_crypt_r): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 +++++++++++
crypt/sha256-crypt.c | 4 ++--
crypt/sha512-crypt.c | 4 ++--
include/stdio.h | 1 +
stdio-common/Versions | 2 ++
stdio-common/snprintf.c | 1 +
6 files changed, 19 insertions(+), 4 deletions(-)
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>From glibc-bugs-return-35074-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 22:49:41 2016
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Subject: [Bug libc/20829] crypt snprintf namespace
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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>From glibc-bugs-return-35075-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 23:07:36 2016
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Subject: [Bug dynamic-link/20831] New: _dl_map_segments does not test for __mprotect failures consistently
Date: Wed, 16 Nov 2016 23:07:00 -0000
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Bug ID: 20831
Summary: _dl_map_segments does not test for __mprotect failures
consistently
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
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$ strace -e mprotect -e fault=mprotect:when=1:error=ENOMEM cat </dev/null
mprotect(0xf774e000, 4096, PROT_NONE) = -1 ENOMEM (Cannot allocate memory)
(INJECTED)
mprotect(0xf774f000, 8192, PROT_READ) = 0
mprotect(0x8054000, 4096, PROT_READ) = 0
mprotect(0xf7784000, 4096, PROT_READ) = 0
+++ exited with 0 +++
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>From glibc-bugs-return-35076-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 16 23:57:58 2016
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Subject: [Bug dynamic-link/20831] _dl_map_segments does not test for __mprotect failures consistently
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--- Comment #1 from Dmitry V. Levin <ldv at sourceware dot org> ---
Expected behavior:
$ strace -e mprotect -e fault=mprotect:when=1:error=ENOMEM cat </dev/null
mprotect(0xf774e000, 4096, PROT_NONE) = -1 ENOMEM (Cannot allocate memory)
(INJECTED)
/bin/cat: error while loading shared libraries: libc.so.6: cannot change memory
protections
+++ exited with 127 +++
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>From glibc-bugs-return-35077-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 14:18:25 2016
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Subject: [Bug dynamic-link/20831] _dl_map_segments does not test for __mprotect failures consistently
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>From glibc-bugs-return-35078-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 14:19:06 2016
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>From glibc-bugs-return-35079-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 14:27:21 2016
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Subject: [Bug network/20826] Tests fail on hosts without network access
Date: Thu, 17 Nov 2016 14:27:00 -0000
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--- Comment #2 from infinity0 at pwned dot gg ---
Aurelien the Debian maintainer suggests that "the real bug" is that
getaddrinfo("localhost.") tries to look this up via a network call rather than
resolving it from /etc/hosts. Indeed, if you explicitly add "localhost." to
/etc/hosts then the test succeeds.
Shorter version:
$ sudo iptables -I OUTPUT -m owner --gid-owner sbuild ! -d 127.0.0.0/8 -j DROP
$ sudo -u sbuild getent hosts localhost
$ sudo -u sbuild getent hosts localhost.
He suggests that libnss_files should resolve "localhost." using a "localhost"
entry in /etc/hosts. The more general version of this would be to resolve
absolute names, using relative entries in /etc/hosts.
To me, this sounds like quite a big behavioural change, even if it would be
technically easy to write the patch. So I don't know if it's the best fix here.
What do you all think?
In the meantime, anyone that is hit by this bug can work around it by adding
"localhost." to /etc/hosts.
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Interesting. This “-e fault“ option is neat. Do you know when it was
introduced in to strace? Or has it been there since basically forever and I
simply did not notice it?
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>From glibc-bugs-return-35083-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 14:49:23 2016
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Subject: [Bug dynamic-link/20708] Extra test failures with LD_BIND_NOW=1
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>From glibc-bugs-return-35084-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 14:53:36 2016
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Subject: [Bug dynamic-link/20831] _dl_map_segments does not test for __mprotect failures consistently
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--- Comment #3 from Gleb Fotengauer-Malinovskiy <glebfm at altlinux dot org> ---
(In reply to Florian Weimer from comment #2)
> Interesting. This “-e fault“ option is neat. Do you know when it was
> introduced in to strace? Or has it been there since basically forever and I
> simply did not notice it?
https://sourceforge.net/p/strace/mailman/message/35496000/
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>From glibc-bugs-return-35085-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 15:40:37 2016
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
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--- Comment #2 from Peter Bergner <bergner at vnet dot ibm.com> ---
We should also look at what releases have this bug, so we know which release
branches we need to back port the fix to.
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>From glibc-bugs-return-35086-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 22:41:02 2016
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Subject: [Bug locale/2373] iconv allows encoding characters above U+10FFFF in UTF-8
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Bruno Haible <bruno at clisp dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bruno at clisp dot org
--- Comment #3 from Bruno Haible <bruno at clisp dot org> ---
Re comment 1:
> Nobody has ever shown any evidence why this is a bad idea.
Validing input is rule #1 among the "secure coding practices", e.g.
https://www.securecoding.cert.org/confluence/display/seccode/Top+10+Secure+Coding+Practices
Also frequently mentioned on http://cwe.mitre.org/top25/
Related attacks exist, e.g.
https://capec.mitre.org/data/definitions/80.html
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>From glibc-bugs-return-35087-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 17 22:55:30 2016
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--- Comment #4 from Bruno Haible <bruno at clisp dot org> ---
The related bug #19727 has been fixed.
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>From glibc-bugs-return-35088-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 18 13:16:36 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug dynamic-link/20839] New: Incomplete rollback of dynamic linker state on linking failure
Date: Fri, 18 Nov 2016 13:16:00 -0000
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Bug ID: 20839
Summary: Incomplete rollback of dynamic linker state on linking
failure
Product: glibc
Version: unspecified
Status: NEW
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Priority: P2
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Assignee: unassigned at sourceware dot org
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Flags: security-
There are some cases in the implementation of dlopen where _dl_signal_error is
called without removing all partially-initialized link maps. The downstream
bug report refers to an error raised from _dl_map_object in response to a
missing file (the final call to _dl_signal_error). We do some cleanup, but it
seems we skip removal of a NODELETE object.
It's not clear to me if we should complete the initialization of the NODELETE
object, or somehow arrange that we are always in a situation in which we can
remove the NODELETE object without observable effects if we have to. The
latter probably means that we cannot start running constructors and IFUNCs
until all objects in the current link operation have been found, mapped, and
all required ld.so data structures have at least been allocated.
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Subject: [Bug math/6810] tgamma() does not set errno for underflow error
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Documentation updated for man-pages-4.09
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>From glibc-bugs-return-35090-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 19 08:47:33 2016
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Subject: [Bug math/6783] remainder() inconsistently sets errno on domain error
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Documented for man-pages-4.09.
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>From glibc-bugs-return-35091-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 19 09:26:18 2016
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Subject: [Bug math/6779] remainder() wrongly gives a domain error for (NaN, 0)
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>From glibc-bugs-return-35092-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 20 02:17:37 2016
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From: "eumen at luminarys dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug network/20844] New: getaddrinfo() fails in some instances with AF_UNSPEC set
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Bug ID: 20844
Summary: getaddrinfo() fails in some instances with AF_UNSPEC
set
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: eumen at luminarys dot com
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Created attachment 9652
--> https://sourceware.org/bugzilla/attachment.cgi?id=9652&action=edit
Example of failure
getaddrinfo() fails with error code -2, message "Name or service not known",
when ai_family is set to AF_UNSPEC for certain hostnames, but succeeds for
AF_INET. I tested this using the hostname "outlook.office365.com".
The dig output for the domain is:
; <<>> DiG 9.11.0-P1 <<>> outlook.office365.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30287
;; flags: qr rd ra; QUERY: 1, ANSWER: 12, AUTHORITY: 7, ADDITIONAL: 12
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;outlook.office365.com. IN A
;; ANSWER SECTION:
outlook.office365.com. 151 IN CNAME lb.geo.office365.com.
lb.geo.office365.com. 216 IN CNAME
outlook.office365.com.g.office365.com.
outlook.office365.com.g.office365.com. 216 IN CNAME
outlook-namnorthwest.office365.com.
outlook-namnorthwest.office365.com. 269 IN A 132.245.31.226
outlook-namnorthwest.office365.com. 269 IN A 132.245.3.130
outlook-namnorthwest.office365.com. 269 IN A 132.245.80.146
outlook-namnorthwest.office365.com. 269 IN A 132.245.92.210
outlook-namnorthwest.office365.com. 269 IN A 132.245.58.98
outlook-namnorthwest.office365.com. 269 IN A 132.245.36.34
outlook-namnorthwest.office365.com. 269 IN A 132.245.88.194
outlook-namnorthwest.office365.com. 269 IN A 132.245.15.210
outlook-namnorthwest.office365.com. 269 IN A 132.245.49.2
;; AUTHORITY SECTION:
office365.com. 109420 IN NS ns2.msft.net.
office365.com. 109420 IN NS ns3.msft.net.
office365.com. 109420 IN NS ns1.msft.net.
office365.com. 109420 IN NS ns1a.o365filtering.com.
office365.com. 109420 IN NS ns4a.o365filtering.com.
office365.com. 109420 IN NS ns2a.o365filtering.com.
office365.com. 109420 IN NS ns4.msft.net.
;; ADDITIONAL SECTION:
ns4a.o365filtering.com. 260 IN A 157.55.133.11
ns2.msft.net. 111581 IN A 208.84.2.53
ns2.msft.net. 87888 IN AAAA 2620:0:32::53
ns1.msft.net. 59 IN A 208.84.0.53
ns1.msft.net. 59 IN AAAA 2620:0:30::53
ns4.msft.net. 2613 IN A 208.76.45.53
ns4.msft.net. 87949 IN AAAA 2620:0:37::53
ns2a.o365filtering.com. 260 IN A 157.56.116.52
ns1a.o365filtering.com. 260 IN A 157.56.110.11
ns3.msft.net. 59 IN A 193.221.113.53
ns3.msft.net. 59 IN AAAA 2620:0:34::53
;; Query time: 1 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Sat Nov 19 18:11:16 PST 2016
;; MSG SIZE rcvd: 663
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Subject: [Bug build/20846] New: Unable to build GLIBC with --disable-shared
Date: Sun, 20 Nov 2016 06:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20846
Bug ID: 20846
Summary: Unable to build GLIBC with --disable-shared
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: neotheuser at ymail dot com
CC: carlos at redhat dot com
Target Milestone: ---
Hello everyone, sorry if this is a duplicate bug, the search function wouldn't
load for me and "possible duplicates" is showing "data error."
Adding --disable-shared (to make a static C library for sysroot) breaks the
build of GLIBC very early on as it fails to generate the libc-modules.h file.
I have looked over commit 130ac68ca25c9aa65e027e3e37337bc048205c69 but was
unable to fix the issue. Master branch and gentoo/2.24 both fail for me
(haven't tried others.) In the mean time I have built GLIBC for my custom build
environment without that option.
Full configure line:
../configure --prefix=/home/<scrubbed>/git-toolchain-bin/usr
--with-binutils=/home/<scrubbed>/git-toolchain-bin/usr/bin
--with-headers=/home/<scrubbed>/git-toolchain-bin/usr/include --disable-shared
Thank you, and again, sorry for the possible duplicate! Build log attached.
Alec Ari
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Subject: [Bug build/20846] Unable to build GLIBC with --disable-shared
Date: Sun, 20 Nov 2016 06:37:00 -0000
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--- Comment #1 from Alec Ari <neotheuser at ymail dot com> ---
Created attachment 9656
--> https://sourceware.org/bugzilla/attachment.cgi?id=9656&action=edit
libc-modules.h: No such file or directory
Website acting incredibly wonky, 3rd try. Build error.
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/20847] New: tst-vfork3 failure
Date: Sun, 20 Nov 2016 10:34:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20847
Bug ID: 20847
Summary: tst-vfork3 failure
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: markus at trippelsdorf dot de
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glibc trunk, linux latest git:
markus@x4 posix % ./tst-vfork3
script 1
script 1
script 1
script 1
script 1
/bin/sh: : No such file or directory
script2.sh failed with status 32512
strace shows:
...
12906 vfork( <unfinished ...>
12912 execve("/tmp/tst-vfork3.Ox2RZ9/script2.sh", ["script2.sh", "2"], [/* 53
vars */]) = -1 ENOEXEC (Exec format error)
12912 execve("/bin/sh", ["/bin/sh", "\1", "2"], [/* 53 vars */] <unfinished
...>
12906 <... vfork resumed> ) = 12912
12906 wait4(12912, <unfinished ...>
12912 <... execve resumed> ) = 0
12912 brk(NULL) = 0x1a60000
...
12912 open("\1", O_RDONLY) = -1 ENOENT (No such file or directory)
12912 stat(".", {st_mode=S_IFDIR|0755, st_size=6840, ...}) = 0
12912 stat("/tmp/tst-vfork3.Ox2RZ9/\1", 0x7ffebae61900) = -1 ENOENT (No such
file or directory)
12912 stat("/var/texlive_2016/bin/x86_64-linux/\1", 0x7ffebae61900) = -1 ENOENT
(No such file or directory)
12912 stat("/home/markus/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such file or
directory)
12912 stat("/usr/local/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such file or
directory)
12912 stat("/usr/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such file or
directory)
12912 stat("/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such file or directory)
12912 stat("/opt/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such file or
directory)
12912 stat("/usr/x86_64-pc-linux-gnu/gcc-bin/7.0.0/\1", 0x7ffebae61900) = -1
ENOENT (No such file or directory)
12912 stat("/usr/lib64/subversion/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such
file or directory)
12912 stat("/usr/games/bin/\1", 0x7ffebae61900) = -1 ENOENT (No such file or
directory)
...
12912 write(2, "/bin/sh: \1: No such file or dire"..., 38) = 3
...
Notice the strange "\1" in the execve() call.
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>From glibc-bugs-return-35096-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 20 11:39:13 2016
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Subject: [Bug libc/20847] tst-vfork3 failure
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Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
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----------------------------------------------------------------------------
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URL| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=78433
Resolution|--- |MOVED
--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
gcc trunk bug. It miscompiles posix/execvpe.c.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78433
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Subject: [Bug locale/20848] Please add the new en_LK locale
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>From glibc-bugs-return-35097-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 20 12:52:18 2016
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Subject: [Bug locale/20848] New: Please add the new en_LK locale
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https://sourceware.org/bugzilla/show_bug.cgi?id=20848
Bug ID: 20848
Summary: Please add the new en_LK locale
Product: glibc
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Created attachment 9657
--> https://sourceware.org/bugzilla/attachment.cgi?id=9657&action=edit
en_LK at 1479646313
Dear maintainers,
Please find attached the locale definition for en_LK to be
considered for inclusion in glibc.
Thanks!
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>From glibc-bugs-return-35099-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 20 12:54:01 2016
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Subject: [Bug locale/20848] Please add the new en_LK locale
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--- Comment #1 from budhajeewa <budhajeewa at gmail dot com> ---
Here's the Git repo, if interested: https://github.com/a2way-com/en_LK-locale
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>From glibc-bugs-return-35100-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 21 10:06:50 2016
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Subject: [Bug libc/11724] ld.so - Initialization and Termination Functions incorrectly ordered
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Florian Weimer <fweimer at redhat dot com> changed:
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Subject: [Bug libc/12454] Inconsistency detected by ld.so: dl-deps.c: 622: _dl_map_object_deps: Assertion `nlist > 1' failed!
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Florian Weimer <fweimer at redhat dot com> changed:
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Subject: [Bug libc/20847] tst-vfork3 failure
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Andreas Schwab <schwab@linux-m68k.org> changed:
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Status|RESOLVED |REOPENED
Last reconfirmed| |2016-11-21
CC| |adhemerval.zanella at linaro dot o
| |rg
Resolution|MOVED |---
Ever confirmed|0 |1
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
Multiple off-by-ones have been found, see the gcc bug. Possibly introduced by
commit 1eb8930608.
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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Subject: [Bug libc/20847] tst-vfork3 failure
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6c9e1be87a37bfac0bf6c80a38171383ac3527e6
commit 6c9e1be87a37bfac0bf6c80a38171383ac3527e6
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Nov 21 11:06:15 2016 -0200
Fix writes past the allocated array bounds in execvpe (BZ#20847)
This patch fixes an invalid write out or stack allocated buffer in
2 places at execvpe implementation:
1. On 'maybe_script_execute' function where it allocates the new
argument list and it does not account that a minimum of argc
plus 3 elements (default shell path, script name, arguments,
and ending null pointer) should be considered. The straightforward
fix is just to take account of the correct list size on argument
copy.
2. On '__execvpe' where the executable file name lenght may not
account for ending '\0' and thus subsequent path creation may
write past array bounds because it requires to add the terminating
null. The fix is to change how to calculate the executable name
size to add the final '\0' and adjust the rest of the code
accordingly.
As described in GCC bug report 78433 [1], these issues were masked off by
GCC because it allocated several bytes more than necessary so that many
off-by-one bugs went unnoticed.
Checked on x86_64 with a latest GCC (7.0.0 20161121) with -O3 on CFLAGS.
[BZ #20847]
* posix/execvpe.c (maybe_script_execute): Remove write past allocated
array bounds.
(__execvpe): Likewise.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78433
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
posix/execvpe.c | 15 ++++++++++-----
2 files changed, 17 insertions(+), 5 deletions(-)
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by 6c9e1be87a37bfac0bf6c80a38171383ac3527e6.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20847] tst-vfork3 failure
Date: Tue, 22 Nov 2016 12:43:00 -0000
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--- Comment #5 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
Adhemerval, why do you commit your patch when Dominik pointed out
that you now write past the array bounds in the else branch?
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Subject: [Bug libc/20847] tst-vfork3 failure
Date: Tue, 22 Nov 2016 12:57:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, release/2.24/master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d174436712e3cabce70d6cd771f177b6fe0e097b
commit d174436712e3cabce70d6cd771f177b6fe0e097b
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Nov 21 11:06:15 2016 -0200
Fix writes past the allocated array bounds in execvpe (BZ#20847)
This patch fixes an invalid write out or stack allocated buffer in
2 places at execvpe implementation:
1. On 'maybe_script_execute' function where it allocates the new
argument list and it does not account that a minimum of argc
plus 3 elements (default shell path, script name, arguments,
and ending null pointer) should be considered. The straightforward
fix is just to take account of the correct list size on argument
copy.
2. On '__execvpe' where the executable file name lenght may not
account for ending '\0' and thus subsequent path creation may
write past array bounds because it requires to add the terminating
null. The fix is to change how to calculate the executable name
size to add the final '\0' and adjust the rest of the code
accordingly.
As described in GCC bug report 78433 [1], these issues were masked off by
GCC because it allocated several bytes more than necessary so that many
off-by-one bugs went unnoticed.
Checked on x86_64 with a latest GCC (7.0.0 20161121) with -O3 on CFLAGS.
[BZ #20847]
* posix/execvpe.c (maybe_script_execute): Remove write past allocated
array bounds.
(__execvpe): Likewise.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78433
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
posix/execvpe.c | 15 ++++++++++-----
2 files changed, 17 insertions(+), 5 deletions(-)
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Subject: [Bug libc/20847] tst-vfork3 failure
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Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
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----------------------------------------------------------------------------
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Resolution|FIXED |---
--- Comment #7 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
53 char *new_argv[argc + 1];
...
56 if (argc > 1)
...
58 else
59 new_argv[2] = NULL;
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Subject: [Bug libc/20847] tst-vfork3 failure
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--- Comment #8 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Because I pushed before I noted his last remarks. I will sort this out.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20853] New: raise in catch_segfault supresses kernel messages for segfaults under libSegFault.so in Linux
Date: Tue, 22 Nov 2016 16:10:00 -0000
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Bug ID: 20853
Summary: raise in catch_segfault supresses kernel messages for
segfaults under libSegFault.so in Linux
Product: glibc
Version: 2.17
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: libc
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Reporter: gjc at alum dot mit.edu
CC: drepper.fsp at gmail dot com
Target Milestone: ---
I have observed under CentOS Linux release 7.1.1503 (Core)
that using env LD_PRELOAD=/lib64/libSegFault.so
results in suppression of the messages from the kernel
that you normally expect in /var/log/messages e.g.
kernel: [9505035.171649] dofault0[29621]: segfault at 0 ip 0000000000400e86 sp
00007fffffffe360 error 4 in dofault0[400000+3000]
I have observed that the call to raise(signal) in glibc-2.24/debug/segfault.c
catch_segfault is not needed, at least for SIGSEGV and when you comment out
that call to raise the behavior of libSegfault.so is satisfactory,
performing to all expectations of
(a) printing the expected information to stderr
(b) causing the kernel to print the segfault message to syslog.
(c) causing the kernel to continue on with core dump handling.
Since these behaviors may vary according to operating system kernel
and possibly kernel configuration and settings,
I am suggesting that skipping the call to raise be an enhancement
modulated by a SEGFAULT_SKIP_RAISE_SIGNAL flag.
Perhaps in some operating environments that call to raise(signal) inside
the signal handler is needed.
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Subject: [Bug libc/20853] raise in catch_segfault supresses kernel messages for segfaults under libSegFault.so in Linux
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--- Comment #1 from George J Carrette <gjc at alum dot mit.edu> ---
Linux kernel information is
3.10.0-327.3.1.el7.x86_64 #1 SMP Wed Dec 9 14:09:15 UTC 2015 x86_64 x86_64
x86_64 GNU/Linux
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Flags| |security-
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https://sourceware.org/bugzilla/show_bug.cgi?id=20845
Bug ID: 20845
Summary: Unable to build GLIBC with --disable-shared
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: neotheuser at ymail dot com
CC: carlos at redhat dot com, fweimer at redhat dot com
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CC: fweimer at redhat dot com
Flags: security-
Hello everyone, sorry if this is a duplicate bug, the search function wouldn't
load for me and "possible duplicates" is showing "data error."
Adding --disable-shared (to make a static C library for sysroot) breaks the
build of GLIBC very early on as it fails to generate the libc-modules.h file.
I have looked over commit 130ac68ca25c9aa65e027e3e37337bc048205c69 but was
unable to fix the issue. Master branch and gentoo/2.24 both fail for me
(haven't tried others.) In the mean time I have built GLIBC for my custom build
environment without that option.
Full configure line:
../configure --prefix=/home/<scrubbed>/git-toolchain-bin/usr
--with-binutils=/home/<scrubbed>/git-toolchain-bin/usr/bin
--with-headers=/home/<scrubbed>/git-toolchain-bin/usr/include --disable-shared
Thank you, and again, sorry for the possible duplicate! Build log attached.
Alec Ari
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Subject: [Bug build/20845] Unable to build GLIBC with --disable-shared
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
*** Bug 20846 has been marked as a duplicate of this bug. ***
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CC| |fweimer at redhat dot com
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
.
*** This bug has been marked as a duplicate of bug 20845 ***
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>From glibc-bugs-return-35120-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 22 18:55:46 2016
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Subject: [Bug network/20844] getaddrinfo() fails in some instances with AF_UNSPEC set
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
What's the output from
dig outlook.office365.com AAAA
? And would you please attach a full packet capture (tcpdump -i INTERFACE -w
getaddrinfo.pcap -s 0 port 53) to this bug while the bug occurs? Or send it to
me privately in case you do not want to disclose your IP address information in
this bug.
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Subject: [Bug network/20626] Unable to resolve host name on MIPS (MIPS-II, o32)
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--- Comment #12 from Florian Weimer <fweimer at redhat dot com> ---
No reaction, closing.
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Subject: [Bug network/20844] getaddrinfo() fails in some instances with AF_UNSPEC set
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--- Comment #3 from Ezra Umen <eumen at luminarys dot com> ---
I've attached the output of the packet capture, though it does include a few
extraneous entries from firefox.
Output of dig outlook.office365.com AAAA
~
;; Truncated, retrying in TCP mode.
; <<>> DiG 9.10.4-P1 <<>> outlook.office365.com AAAA
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43927
;; flags: qr tc rd ra; QUERY: 1, ANSWER: 10, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;outlook.office365.com. IN AAAA
;; ANSWER SECTION:
outlook.office365.com. 24 IN AAAA 2a01:111:f400:f3ab::2
outlook.office365.com. 24 IN AAAA 2603:1036::2
outlook.office365.com. 24 IN AAAA 2603:1036:404:16::2
outlook.office365.com. 24 IN AAAA 2603:1036:120:2c::2
outlook.office365.com. 24 IN AAAA 2a01:111:f400:534b::2
outlook.office365.com. 24 IN AAAA 2603:1036:3:106::2
outlook.office365.com. 24 IN AAAA 2a01:111:f400:5388::2
outlook.office365.com. 24 IN AAAA 2603:1036:3:18::2
outlook.office365.com. 24 IN AAAA 2603:1036:102:108::2
outlook.office365.com. 24 IN AAAA 2a01:111:f400:2cfd::2
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Nov 22 15:48:00 CST 2016
;; MSG SIZE rcvd: 319
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Subject: [Bug network/20844] getaddrinfo() fails in some instances with AF_UNSPEC set
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--- Comment #2 from Ezra Umen <eumen at luminarys dot com> ---
Created attachment 9661
--> https://sourceware.org/bugzilla/attachment.cgi?id=9661&action=edit
getaddrinfo failure network capture
Contains some unnecessary DNS requests from firefox.
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Subject: [Bug math/20855] New: Default bits/mathdef.h has inappropriate float_t
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Bug ID: 20855
Summary: Default bits/mathdef.h has inappropriate float_t
Product: glibc
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The default (top-level) version of bits/mathdef.h defines float_t to double.
It is used on ColdFire, MicroBlaze, Nios II and SH3, all of which define
FLT_EVAL_METHOD to 0, so float_t should be float.
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b0216d3e4d98a3528bad428c22ff96fcbcc102a4
commit b0216d3e4d98a3528bad428c22ff96fcbcc102a4
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 23 00:28:30 2016 +0000
Fix default float_t definition (bug 20855).
The default (top-level) version of bits/mathdef.h defines float_t to
double. It is used on ColdFire, MicroBlaze, Nios II and SH3, all of
which define FLT_EVAL_METHOD to 0, so float_t should be float (and C11
requires a certain correspondence between these typedefs and
FLT_EVAL_METHOD values).
I proposed fixing this default in
<https://sourceware.org/ml/libc-alpha/2015-01/msg00499.html>, with no
objections from architecture maintainers, and this patch makes that
fix. As noted in the NEWS entry added, this might affect the ABIs of
non-glibc libraries (ImageMagick has been mentioned in gcc-patches
discussion of the S/390 case - which is unaffected by this patch), but
as noted in my previous message, affected libraries would have
problems with -mfpmath=sse anyway on 32-bit x86.
A (compilation) testcase is added to verify the required
correspondence of typedefs to FLT_EVAL_METHOD values. This test is
built with -fexcess-precision=standard to avoid any issues with GCC 7
on S/390 providing a more accurate FLT_EVAL_METHOD definition in the
default (no excess precision) mode. (This will also be usable to test
a fix for the recently reported bug about these typedefs on x86_64
-mfpmath=387, as architecture-specific tests can be added that
It is entirely possible that the fixed default makes some
architecture-specific versions of bits/mathdef.h semantically
equivalent to the default version and so no longer required. I don't
intend to investigate that separately from the refactoring I proposed
in <https://sourceware.org/ml/libc-alpha/2016-11/msg00745.html>, which
will create as few header variants as possible for each group of
definitions.
Tested (compilation only) with build-many-glibcs.py.
[BZ #20855]
* bits/mathdef.h (float_t): Define to float.
* math/test-flt-eval-method.c: New file.
* math/Makefile (tests): Add test-flt-eval-method.
(CFLAGS-test-flt-eval-method.c): New variable.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 +++++
NEWS | 5 +++
bits/mathdef.h | 8 ++--
math/Makefile | 3 +-
math/test-flt-eval-method.c | 65 +++++++++++++++++++++++++++++++++++++++++++
5 files changed, 84 insertions(+), 5 deletions(-)
create mode 100644 math/test-flt-eval-method.c
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Subject: [Bug math/20855] Default bits/mathdef.h has inappropriate float_t
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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Subject: [Bug dynamic-link/20857] New: ld.so --verify is unreliable for position-dependent executables
Date: Wed, 23 Nov 2016 10:25:00 -0000
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Bug ID: 20857
Summary: ld.so --verify is unreliable for position-dependent
executables
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Flags: security-
ld.so --verify on this program crashes (when compiled on x86_64):
char buffer[3ULL << 45];
int main (void)
{
}
Before running the following command, enable unlimited memory overcommit with
vm.overcommit_memory=1.
$ gdb --args /lib64/ld-linux-x86-64.so.2 ./a.out
…
(gdb) r
Starting program: /usr/lib64/ld-linux-x86-64.so.2 ./a.out
Program received signal SIGSEGV, Segmentation fault.
0x000055555556d4ba in mmap64 () at ../sysdeps/unix/syscall-template.S:84
84 T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
(gdb) disas
Dump of assembler code for function mmap64:
0x000055555556d4b0 <+0>: add %al,(%rax)
0x000055555556d4b2 <+2>: add %al,(%rax)
0x000055555556d4b4 <+4>: add %al,(%rax)
0x000055555556d4b6 <+6>: add %al,(%rax)
0x000055555556d4b8 <+8>: add %al,(%rax)
=> 0x000055555556d4ba <+10>: add %al,(%rax)
0x000055555556d4bc <+12>: add %al,(%rax)
0x000055555556d4be <+14>: add %al,(%rax)
0x000055555556d4c0 <+16>: add %al,(%rax)
0x000055555556d4c2 <+18>: add %al,(%rax)
0x000055555556d4c4 <+20>: add %al,(%rax)
0x000055555556d4c6 <+22>: add %al,(%rax)
0x000055555556d4c8 <+24>: add %al,(%rax)
0x000055555556d4ca <+26>: add %al,(%rax)
0x000055555556d4cc <+28>: add %al,(%rax)
0x000055555556d4ce <+30>: add %al,(%rax)
0x000055555556d4d0 <+32>: add %al,(%rax)
0x000055555556d4d2 <+34>: add %al,(%rax)
End of assembler dump.
(gdb)
The opcodes correspond to NUL bytes, so the mmap system call stub itself has
been over-mapped.
Due to ASLR, this can happen randomly with much smaller executables.
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Subject: [Bug dynamic-link/20857] ldd and ld.so --verify is unreliable for position-dependent executables
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ld.so --verify is |ldd and ld.so --verify is
|unreliable for |unreliable for
|position-dependent |position-dependent
|executables |executables
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Reportedly, this affects ldd as well.
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Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
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--- Comment #17 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Is this fixed by the September commit to master, or not?
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--- Comment #18 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Not sure, how do I point my GCC to target the new master of glibc without
actually replacing my distro's glibc?
If anyone else could test this, the example I posted is pretty basic:
adam@Crushinator:~$ gcc -mavx test_sincos.c -o test.out -lm -O3
adam@Crushinator:~$ time ./test.out
real 0m0.083s
user 0m0.080s
sys 0m0.000s
adam@Crushinator:~$ gcc -msse4 testsincos.c -o test.out -lm -O3
adam@Crushinator:~$ time ./test.out
real 0m0.029s
user 0m0.027s
sys 0m0.000s
Just bump NUMVALS up to something arbitrarily high.
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Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
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--- Comment #19 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Adam Stylinski from comment #18)
> Not sure, how do I point my GCC to target the new master of glibc without
> actually replacing my distro's glibc?
If you build glibc from source, you'll get a script, testrun.sh, which runs its
argument against the newly built glibc:
https://sourceware.org/glibc/wiki/Testing/Builds
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Subject: [Bug math/20787] float_t is defined as float incorrectly on x86_64 even if __FLT_EVAL_METHOD__ is 2
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=56ede9ed59684a5802cc88733055453901f1c2f0
commit 56ede9ed59684a5802cc88733055453901f1c2f0
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 23 17:56:31 2016 +0000
Fix x86_64 -mfpmath=387 float_t, double_t (bug 20787).
Bug 20787 reports that, while float_t and double_t for 32-bit x86
properly respect -mfpmath=sse, for x86_64 they fail to reflect
-mfpmath=387, which is valid if unusual and results in FLT_EVAL_METHOD
being 2. This patch fixes the definitions to respect
__FLT_EVAL_METHOD__ in that case, arranging for the test that the
types correspond with FLT_EVAL_METHOD to be run with both -mfpmath=387
and -mfpmath=sse.
Note: this patch will also have the effect of making float_t and
double_t be long double for x86_64 with -mfpmath=sse+387, when
FLT_EVAL_METHOD is -1. It seems reasonable for x86_64 to be
consistent with 32-bit x86 in this case (and that definition is
conservatively safe, in that it makes the types correspond to the
widest evaluation format that might be used).
Tested for x86-64 and x86.
[BZ #20787]
* sysdeps/x86/bits/mathdef.h (float_t): Do not define to float if
[__x86_64__] when __FLT_EVAL_METHOD__ is nonzero.
(double_t): Do not define to double if [__x86_64__] when
__FLT_EVAL_METHOD__ is nonzero.
* sysdeps/x86/fpu/test-flt-eval-method-387.c: New file.
* sysdeps/x86/fpu/test-flt-eval-method-sse.c: Likewise.
* sysdeps/x86/fpu/Makefile [$(subdir) = math] (tests): Add
test-flt-eval-method-387 and test-flt-eval-method-sse.
[$(subdir) = math] (CFLAGS-test-flt-eval-method-387.c): New
variable.
[$(subdir) = math] (CFLAGS-test-flt-eval-method-sse.c): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 15 +++++++++++++++
sysdeps/x86/bits/mathdef.h | 3 ++-
sysdeps/x86/fpu/Makefile | 6 +++++-
sysdeps/x86/fpu/test-flt-eval-method-387.c | 1 +
sysdeps/x86/fpu/test-flt-eval-method-sse.c | 1 +
5 files changed, 24 insertions(+), 2 deletions(-)
create mode 100644 sysdeps/x86/fpu/test-flt-eval-method-387.c
create mode 100644 sysdeps/x86/fpu/test-flt-eval-method-sse.c
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Subject: [Bug math/20787] float_t is defined as float incorrectly on x86_64 even if __FLT_EVAL_METHOD__ is 2
Date: Wed, 23 Nov 2016 17:58:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
Date: Wed, 23 Nov 2016 18:00:00 -0000
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--- Comment #20 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Florian Weimer from comment #19)
> (In reply to Adam Stylinski from comment #18)
> > Not sure, how do I point my GCC to target the new master of glibc without
> > actually replacing my distro's glibc?
>
> If you build glibc from source, you'll get a script, testrun.sh, which runs
> its argument against the newly built glibc:
>
> https://sourceware.org/glibc/wiki/Testing/Builds
Yes, this definitely fixes it.
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Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
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Adam Stylinski <kungfujesus06 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #21 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Marking as fixed. Hoping 2.25 gets into my distro, soon.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20859] New: [sh4] FP_ILOGB0 invalid
Date: Wed, 23 Nov 2016 18:29:00 -0000
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Bug ID: 20859
Summary: [sh4] FP_ILOGB0 invalid
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Host: sh4-*-*
ISO C requires that the value of FP_ILOGB0 must be INT_MIN or -INT_MAX. In
sysdeps/sh/sh4/bits/mathdef.h, it's 0x80000001; that is, a positive unsigned
value that would be -INT_MAX if converted to int, which is not valid (there's
no actual constraint on the type, but whatever the type the integer value must
be one of the two permitted). Changing to (-0x7fffffff) would be
ABI-compatible.
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Subject: [Bug math/20859] [sh4] FP_ILOGB0 invalid
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c2a82dace432ef59542bcde8ead2a7050fba51c6
commit c2a82dace432ef59542bcde8ead2a7050fba51c6
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Nov 23 21:23:12 2016 +0000
Fix SH4 FP_ILOGB0 (bug 20859).
ISO C requires that the value of FP_ILOGB0 must be INT_MIN or
-INT_MAX. In sysdeps/sh/sh4/bits/mathdef.h, it's 0x80000001; that is,
a positive unsigned value that would be -INT_MAX if converted to int,
which is not valid (there's no actual constraint on the type, but
whatever the type the integer value must be one of the two permitted,
and types other than int don't really make sense). This patch makes
the ABI-compatible change to (-0x7fffffff).
(The testcase handles positive and negative sign separately to avoid
any issues with implicit conversions that could result in e.g. INT_MIN
converted to uintmax_t wrongly passing.)
Tested (compilation only) with build-many-glibcs.py.
[BZ #20859]
* sysdeps/sh/sh4/bits/mathdef.h (FP_ILOGB0): Define to
(-0x7fffffff) instead of 0x80000001.
* math/test-fp-ilogb-constants.c: New file.
* math/Makefile (tests): Add test-fp-ilogb-constants.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 8 +++
math/Makefile | 3 +-
.../test-fp-ilogb-constants.c | 51 ++++++++-----------
sysdeps/sh/sh4/bits/mathdef.h | 2 +-
4 files changed, 33 insertions(+), 31 deletions(-)
copy stdlib/tst-quick_exit.cc => math/test-fp-ilogb-constants.c (61%)
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Subject: [Bug math/20859] [sh4] FP_ILOGB0 invalid
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What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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Michał Górny <mgorny at gentoo dot org> changed:
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| |mgorny at gentoo dot org
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>From glibc-bugs-return-35140-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 24 05:37:33 2016
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From: "igor.liferenko at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/20860] New: Incorrect return value in mbsnrtowcs()
Date: Thu, 24 Nov 2016 05:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20860
Bug ID: 20860
Summary: Incorrect return value in mbsnrtowcs()
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: igor.liferenko at gmail dot com
CC: drepper.fsp at gmail dot com
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Hi all,
In mbsnrtowcs(3) it is written:
If an invalid multibyte sequence was encountered,
(size_t) -1 is returned, and errno set to EILSEQ.
The following code demonstrates that EILSEQ is not set,
and the return value is 0, which contradicts to the man
page and to analogous mbstowcs() and mbsrtowcs() functions.
#include <locale.h>
#include <wchar.h>
#include <stdio.h>
#include <string.h>
int main(void)
{
setlocale(LC_CTYPE, "en_US.UTF-8");
char *s = "\321";
const char *x = s;
if (mbsnrtowcs(NULL,&x,strlen(s),0,NULL)==0) perror(NULL);
return 0;
}
The output is:
Success
Cheers,
Igor
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Subject: [Bug libc/20860] Incorrect return value in mbsnrtowcs()
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
This is an incomplete multibyte sequence, and glibc as elected to stop
conversion before it.
"If the input buffer ends with an incomplete character, it is unspecified
whether conversion stops at the end of the previous character (if any), or at
the end of the input buffer."
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Florian Weimer <fweimer at redhat dot com> changed:
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>From glibc-bugs-return-35143-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 24 15:41:29 2016
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Subject: [Bug network/16421] IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
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Florian Weimer <fweimer at redhat dot com> changed:
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See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1138893
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>From glibc-bugs-return-35144-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 24 17:00:54 2016
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From: "cybernenea11 at cyberdude dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/20862] New: Please add the new mo_MD@cyrillic locale
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Bug ID: 20862
Summary: Please add the new mo_MD@cyrillic locale
Product: glibc
Version: unspecified
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Hello. Dear maintainers,
Please find attached the locale definition for mo_MD@cyrillic to be
considered for inclusion in glibc.
Thanks!
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Subject: [Bug libc/15366] Per C11 and C++11, <stdint.h> should not look at __STDC_LIMIT_MACROS or __STDC_CONSTANT_MACROS
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
commit 1ef74943ce2f114c78b215af57c2ccc72ccdb0b7
Author: Paul Pluzhnikov <ppluzhnikov@google.com>
Date: Thu Apr 25 11:08:31 2013 -0700
Get rid of __STDC_FORMAT_MACROS, __STDC_LIMIT_MACROS and
__STDC_CONSTANT_MACROS
This went into glibc 2.18.
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Subject: [Bug localedata/20862] Please add the new mo_MD@cyrillic locale
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--- Comment #1 from Vlad <cybernenea11 at cyberdude dot com> ---
Created attachment 9667
--> https://sourceware.org/bugzilla/attachment.cgi?id=9667&action=edit
Moldovan Cyrillic language locale
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Subject: [Bug libc/20728] powerpc: Missing TOC stub in clone
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
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--- Comment #3 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by ce193f551ec21df85c934626a21730881484dcf0
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>From glibc-bugs-return-35148-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 04:21:48 2016
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From: "arthur200126 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20864] New: iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Fri, 25 Nov 2016 04:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20864
Bug ID: 20864
Summary: iconv: cp936 missing single-byte euro sign (0x80,
U+20AC), not same as GBK
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: arthur200126 at gmail dot com
CC: libc-locales at sourceware dot org
Target Milestone: ---
The addition of a single-byte euro sign at 0x80 in CP936 is possibly the most
well-known difference between the Windows Code Page and the GBK specification.
However, current versions of glibc seems to alias CP936 to GBK and not display
this behavior.
The following session comes from GNU bash running in a UTF-8 console. $''
denotes bash's ANSI C-style quoting, where \xhh generates a raw hex byte and
\uhhhh generates the representation of U+hhhh under current locale.
# iconv (Ubuntu GLIBC 2.23-0ubuntu4) 2.23
$ iconv -f cp936 -t utf-8 <<< $'\x80'
iconv: illegal input sequence at position 0
$ iconv -t cp936 -f utf-8 <<< $'\u20ac' | hexdump -C
iconv: illegal input sequence at position 0
Expected behavior (from libiconv) is shown below.
# iconv (GNU libiconv 1.14)
$ iconv -f cp936 -t utf-8 <<< $'\x80'
€
$ iconv -t cp936 -f utf-8 <<< $'\u20ac' | hexdump -C
00000000 80 0a |..|
00000002
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>From glibc-bugs-return-35149-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 04:35:04 2016
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From: "arthur200126 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20865] New: iconv: cp950 does not contain EUDC/PUA mappings
Date: Fri, 25 Nov 2016 04:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20865
Bug ID: 20865
Summary: iconv: cp950 does not contain EUDC/PUA mappings
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: arthur200126 at gmail dot com
CC: libc-locales at sourceware dot org
Target Milestone: ---
Microsoft's cp950 mapping contains sequential mappings from Big5's Extended
User-defined Characters (EUDC) to Unicode PUA. Such mappings are used by a
number of Big5 extensions, including HKSCS which uses these PUA code points
when a character is not yet available in the target UCS version.
The following sessions come from GNU bash running in a UTF-8 console. $''
denotes bash's ANSI C-style quoting, where \xhh generates a raw hex byte and
\uhhhh generates the representation of U+hhhh under current locale.
Currently glibc's cp950 implementation does not contain these mappings:
# iconv (Ubuntu GLIBC 2.23-0ubuntu4) 2.23
ubuntu$ iconv -f cp950 -t utf-32le <<< $'\x81\x40' | hexdump -C
iconv: illegal input sequence at position 0
ubuntu$ iconv -t cp950 -f utf-8 <<< $'\ueeb8' | hexdump -C
iconv: illegal input sequence at position 0
The desired behavior for decoding can be seen in libiconv:
# iconv (GNU libiconv 1.14)
cygwin$ iconv -f cp950 -t utf-32le <<< $'\x81\x40' | hexdump -C
00000000 b8 ee 00 00 0a 00 00 00 |........|
00000008
Note that libiconv is not interested in doing the reverse:
cygwin$ iconv -t cp950 -f utf-8 <<< $'\ueeb8' | hexdump -C
iconv: illegal input sequence at position 0
libiconv's mapping:
http://git.savannah.gnu.org/cgit/libiconv.git/tree/lib/cp950.h#n72
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>From glibc-bugs-return-35150-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 05:15:51 2016
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Subject: [Bug network/14505] AI_ADDRCONFIG does not suppress IN A lookups from IPV6-only hosts
Date: Fri, 25 Nov 2016 05:15:00 -0000
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--- Comment #3 from Mike Frysinger <vapier at gentoo dot org> ---
Created attachment 9668
--> https://sourceware.org/bugzilla/attachment.cgi?id=9668&action=edit
testcase
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>From glibc-bugs-return-35151-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 05:17:52 2016
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Subject: [Bug network/16826] getaddrinfo() doesn't get scope ID for IPv6-only look-ups
Date: Fri, 25 Nov 2016 05:17:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugs.gentoo.org/sho
| |w_bug.cgi?id=600632
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>From glibc-bugs-return-35152-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 09:19:11 2016
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Subject: =?UTF-8?B?W0J1ZyBsb2NhbGUvMTg5NzhdIFRoZSBjb2xsYXRpb24gc3ltYm9sIOKAnFVO?= =?UTF-8?B?REVGSU5FROKAnSBkb2VzIG5vdCB3b3JrIGFzIHNwZWNpZmllZCBpbiB0aGUg?= =?UTF-8?B?c3RhbmRhcmQ=?Date: Fri, 25 Nov 2016 09:19:00 -0000
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Kamil Dudka <kdudka at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kdudka at redhat dot com
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>From glibc-bugs-return-35153-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 16:16:25 2016
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Subject: [Bug localedata/20862] mo_MD@cyrillic: new locale
Date: Fri, 25 Nov 2016 16:16:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Please add the new |mo_MD@cyrillic: new locale
|mo_MD@cyrillic locale |
Severity|normal |enhancement
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>From glibc-bugs-return-35154-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 16:23:53 2016
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Fri, 25 Nov 2016 16:23:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-11-25
CC| |vapier at gentoo dot org
Assignee|unassigned at sourceware dot org |vapier at gentoo dot org
Ever confirmed|0 |1
--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> ---
i've posted a fix here:
https://sourceware.org/ml/libc-alpha/2016-11/msg00930.html
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>From glibc-bugs-return-35155-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 19:35:29 2016
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From: "tuliom at linux dot vnet.ibm.com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nptl/20822] race condition in __lll_unlock_elision on powerpc
Date: Fri, 25 Nov 2016 19:35:00 -0000
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--- Comment #3 from Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> ---
(In reply to Peter Bergner from comment #2)
> We should also look at what releases have this bug, so we know which release
> branches we need to back port the fix to.
It affects 2.23, 2.24 and master.
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>From glibc-bugs-return-35156-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 25 21:37:30 2016
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From: "gunnarhj at ubuntu dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20848] Please add the new en_LK locale
Date: Fri, 25 Nov 2016 21:37:00 -0000
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Gunnar Hjalmarsson <gunnarhj at ubuntu dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |libc-locales at sourceware dot org
Component|locale |localedata
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>From glibc-bugs-return-35157-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 01:02:34 2016
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20848] en_LK: new locale
Date: Sat, 26 Nov 2016 01:02:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Please add the new en_LK |en_LK: new locale
|locale |
Severity|normal |enhancement
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>From glibc-bugs-return-35158-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 01:57:04 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20862] mo_MD@cyrillic: new locale
Date: Sat, 26 Nov 2016 01:57:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2016-11-26
CC| |carlos at redhat dot com
Ever confirmed|0 |1
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Vlad,
Thank you very much for the locale contribution.
Please review our contribution checklist:
https://sourceware.org/glibc/wiki/Contribution%20checklist
Please note that you do _not_ need copyright assignment to contribute locales,
however the patch will have to be sent to libc-alpha@sourceware.org for
eventual review.
(a) Use of 'mo' versus 'ro' for locale langauge tag.
Please be aware that as of 2008 the 'mo' tag has been deprecated in favour of
using the 'ro' tag. Therefore for a new locale we should probably be using
'ro_MD@cyrillic' for the Moldovan language using Cyrillic script.
(b) LC_IDENTIFICATION category should always be "i18n:2012" since it must
specify a published standard of i18n.
(c) Is the mon_thousands_sep and thousands_sep intended to be a non-breaking
space instead of a period as is used in original Romanian?
(d) Please fill in more of the LC_ADDRESS entries as provided by other locales
e.g. lang_*.
(e) Please test installing and using your locale. Existing checks for invalid
LC_IDENTIFICATION categories should have rejected your locale IIRC. Please
confirm you have tested compiling and using your locale e.g.
https://sourceware.org/glibc/wiki/Locales#Testing_Locales
Thank you.
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>From glibc-bugs-return-35159-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 01:57:37 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20862] mo_MD@cyrillic: new locale
Date: Sat, 26 Nov 2016 01:57:00 -0000
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--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Carlos O'Donell from comment #2)
> (a) Use of 'mo' versus 'ro' for locale langauge tag.
>
> Please be aware that as of 2008 the 'mo' tag has been deprecated in favour
> of using the 'ro' tag. Therefore for a new locale we should probably be
> using 'ro_MD@cyrillic' for the Moldovan language using Cyrillic script.
Let me be clear that the tag deprecation is at the ISO 639-1 level.
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>From glibc-bugs-return-35160-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 02:27:04 2016
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
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Paul Eggert <eggert at gnu dot org> changed:
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--- Comment #6 from Paul Eggert <eggert at gnu dot org> ---
This bug turns out to break GNU core utilities like 'uniq' and 'shuf'. See
coreutils Bug#25029:
https://bugs.gnu.org/25029
I suppose we will look into a workaround by adding a Gnulib wrapper for
freopen, but it would be nicer if this bug were fixed in glibc.
Also, Bug#15701 appears to be a duplicate of this bug.
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>From glibc-bugs-return-35161-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 02:28:17 2016
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Subject: [Bug stdio/15701] freopen() acts oddly when underlying file descriptor is closed
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Paul Eggert <eggert at gnu dot org> changed:
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--- Comment #2 from Paul Eggert <eggert at gnu dot org> ---
This appears to be a duplicate of Bug#15589.
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>From glibc-bugs-return-35162-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 04:10:24 2016
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Subject: [Bug admin/13933] web site links to git are not so easy to find
Date: Sat, 26 Nov 2016 04:10:00 -0000
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--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
Preview of the update is now online:
https://www.gnu.org/software/libc/preview/libc.html
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Subject: [Bug admin/13744] Default new bugs to UNCONFIRMED
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Bugs are defaulting to UNCONFIRMED.
Our product configuration in bugzilla has UNCONFIRMED as an enabled option.
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
My own bugs start in NEW not UNCONFIRMED, but others start in UNCONFIRMED.
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>From glibc-bugs-return-35164-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 04:14:00 2016
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Subject: [Bug dynamic-link/20871] New: Test to make sure bugs start UNCONFIRMED.
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Bug ID: 20871
Summary: Test to make sure bugs start UNCONFIRMED.
Product: glibc
Version: 2.25
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Testing to make sure bugs start in UNCONFIRMED state.
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>From glibc-bugs-return-35166-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 04:14:50 2016
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Subject: [Bug dynamic-link/20871] Test to make sure bugs start UNCONFIRMED.
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
FAIL. Bug starts in NEW not UNCONFIRMED.
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>From glibc-bugs-return-35167-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 04:15:41 2016
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Subject: [Bug dynamic-link/20871] Test to make sure bugs start UNCONFIRMED.
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Carlos O'Donell <carlos at redhat dot com> changed:
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--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Closing.
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>From glibc-bugs-return-35169-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 10:21:33 2016
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Subject: [Bug stdio/15701] freopen() acts oddly when underlying file descriptor is closed
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Florian Weimer <fweimer at redhat dot com> changed:
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CC| |fweimer at redhat dot com
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Agreed, it's a duplicate.
*** This bug has been marked as a duplicate of bug 15589 ***
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>From glibc-bugs-return-35168-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 10:21:33 2016
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #7 from Florian Weimer <fweimer at redhat dot com> ---
*** Bug 15701 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-35170-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 10:29:41 2016
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
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--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
I'm struggling to come up with an interpretation of POSIX which allows one to
close the underlying file descriptor of a stream. Our implementation does not
support this for several reasons (flushing on exit is one).
POSIX requires ignoring errors on freopen, which is not quite the same thing.
It also makes it impossible to check for data loss when reopening a writable
stream, so I don't see why anyone would want to use this interface.
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>From glibc-bugs-return-35171-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 12:23:53 2016
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Subject: [Bug nptl/20116] use after free in pthread_create
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jsiebert at poczta dot wp.pl changed:
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--- Comment #7 from jsiebert at poczta dot wp.pl ---
Hello,
when will be this bug fixed? I can't use current systems with glibc-2.24
because it is unstable and often segfaults.
I tested proposed patch and it works ok. Will you release new stable version of
glibc with this patch?
thanks for help.
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>From glibc-bugs-return-35172-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 14:41:49 2016
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
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--- Comment #9 from Rich Felker <bugdal at aerifal dot cx> ---
It's most certainly nonsense to close the underlying fd for a stream then
perform any subsequent operations on the stream, but the situation could arise
as an implementation detail when a program is exec'd with the standard streams
closed. In that case, fd 0/1/2 may not be valid but the standard FILE objects
would reference them. I'm not sure whether this should be considered a valid
usage; arguably it's undefined to access the FILE objects in this case.
Alternatively, it's arguable that the implementation should detect this
condition at program start and lock out any access to the FILE objects.
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>From glibc-bugs-return-35173-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 16:19:34 2016
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
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--- Comment #10 from Paul Eggert <eggert at gnu dot org> ---
The usage that caused the bug is something like this, in a program that accepts
a single arg FILE that may be "-" to denote standard input:
if (strcmp (file, "-") != 0 && !freopen (file, "r", stdin))
error (EXIT_FAILURE, errno, file);
Here any error due to fd 0 being closed is irrelevant, as it's the first time
the program has accessed stdin. This is a typical use case for freopen, and to
some extent it's the reason freopen exists at all.
This sort of thing works in BSD and other non-GNU operating systems that I know
of, and it would be a shame for glibc to break it. Although it's perhaps not
crystal clear that POSIX allows such breakage, it is clear that POSIX does not
require it, and the intent of the freopen API is to support such usage instead
of to break it.
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Subject: [Bug network/9981] getaddrinfo(NULL) with AI_PASSIVE returns 0.0.0.0 (IPv4-only) and :: (IPv6+IPv4) in this order
Date: Sat, 26 Nov 2016 16:24:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |carlos at redhat dot com,
| |fweimer at redhat dot com
--- Comment #15 from Carlos O'Donell <carlos at redhat dot com> ---
Adding Florian Weimer to CC since this issue might be of interest to him as
network subsystem maintainer.
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To: glibc-bugs@sourceware.org
Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
Date: Sat, 26 Nov 2016 16:41:00 -0000
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--- Comment #11 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Paul Eggert from comment #10)
> The usage that caused the bug is something like this, in a program that
> accepts a single arg FILE that may be "-" to denote standard input:
>
> if (strcmp (file, "-") != 0 && !freopen (file, "r", stdin))
> error (EXIT_FAILURE, errno, file);
This looks far more reasonable.
> Here any error due to fd 0 being closed is irrelevant, as it's the first
> time the program has accessed stdin. This is a typical use case for freopen,
> and to some extent it's the reason freopen exists at all.
On the other hand, POSIX is quite clear that calling execve with the descriptor
0 not open for reading and 1/2 not open for writing is undefined. If this
happens as the result of a shell command, it suggests a shell bug to me.
We could work around it in glibc by associating descriptors 0/1/2 with
/dev/null unconditionally, a not just for SUID programs, but this may impact
backwards compatibility for programs which never plan to use the standard
descriptors in the intended way.
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>From glibc-bugs-return-35176-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 16:43:26 2016
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Subject: [Bug network/9981] getaddrinfo(NULL) with AI_PASSIVE returns 0.0.0.0 (IPv4-only) and :: (IPv6+IPv4) in this order
Date: Sat, 26 Nov 2016 16:43:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
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Subject: [Bug network/16826] getaddrinfo() doesn't get scope ID for IPv6-only look-ups
Date: Sat, 26 Nov 2016 21:12:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
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----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
--- Comment #5 from Mike Frysinger <vapier at gentoo dot org> ---
is the nss API documented anywhere ? do we have a callback that'd provide
IPv6-only resolution ? or do we need to add one ?
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>From glibc-bugs-return-35178-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 26 22:21:28 2016
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Sat, 26 Nov 2016 22:21:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=aa4d00ca39e604ac4e9fead401ccd4483e11a281
commit aa4d00ca39e604ac4e9fead401ccd4483e11a281
Author: Mike Frysinger <vapier@gentoo.org>
Date: Fri Nov 25 11:12:10 2016 -0500
localedata: GBK: add mapping for 0x80->Euro sign [BZ #20864]
Microsoft long ago added a mapping for 0x80 to the Euro sign to their
CP936. While GBK 1.0 doesn't include this mapping, it is compatible,
and Microsoft and glibc alias the two codepages. We could split them
apart so GBK wouldn't include the mapping, but that seems like a lot
of work for little gain.
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 5 +++++
localedata/charmaps/GBK | 7 +++++++
2 files changed, 12 insertions(+), 0 deletions(-)
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Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
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Mike Frysinger <vapier at gentoo dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Mike Frysinger <vapier at gentoo dot org> ---
thanks, fix will be in the next release. considering it's always been broken,
doesn't seem like it's worth it to back port to branches.
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>From glibc-bugs-return-35180-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 27 01:33:01 2016
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From: "eggert at gnu dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
Date: Sun, 27 Nov 2016 01:33:00 -0000
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--- Comment #12 from Paul Eggert <eggert at gnu dot org> ---
It's not a POSIX violation if the shell executes "./a.out <&-" with stdin being
closed. Although the command is not portable as-is and POSIX allows the shell
to act as if the command were "./a.out </dev/null", POSIX doesn't require the
shell to do so. Common shells close stdin (which POSIX also allows) and GNU
utilities should do the right thing in this case. This action by common shells
is what caused coreutils Bug#25029.
For what it's worth, I changed Gnulib to work around the glibc freopen
behavior, which is unexpected by so many uses of freopen that I think it
qualifies as a bug even if it's not a POSIX-conformance issue. This should fix
the coreutils bug. Non-Gnulib-using applications are still vulnerable to the
glibc problem.
The Gnulib patch and followup fix are here:
http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=b947d0524d64b5a139282fd48caa7a866e20513c
http://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=ea96186d0b25c89aab0de3129fc4bb3f7a5ccd37
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20865] charmaps: cp950 does not contain EUDC/PUA mappings
Date: Sun, 27 Nov 2016 05:57:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|iconv: cp950 does not |charmaps: cp950 does not
|contain EUDC/PUA mappings |contain EUDC/PUA mappings
--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> ---
we currently alias CP950 to BIG5. i don't think we want to add all these
mappings to BIG5 since it explicitly carves out that spaces as "reserved":
https://en.wikipedia.org/wiki/Big5#A_more_detailed_look_at_the_organization
which means we need to copy BIG5 to CP950 and add the MS extensions. then drop
the alias of CP950->BIG5.
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>From glibc-bugs-return-35182-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 27 09:46:07 2016
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From: "swbza at bluematt dot me" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/20874] New: getaddrinfo_a segfault
Date: Sun, 27 Nov 2016 09:46:00 -0000
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Bug ID: 20874
Summary: getaddrinfo_a segfault
Product: glibc
Version: 2.24
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Priority: P2
Component: nss
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The following code segfaults after running for a while (a few minutes on some
systems I've tested on), or very quickly if you allow it to run with more
threads by uncommenting the thread starting. I could be calling it wrong, but
it seems to mesh with the man page to me.
#define _GNU_SOURCE
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <string>
#include <thread>
const char *host = "bluematt.me";
void beatit() {
struct gaicb gai;
struct gaicb *gaip = &gai;
while (1) {
memset(&gai, 0, sizeof(gai));
fprintf(stderr, "OK, cleared gai, now calling gai_a\n");
std::string hostname(host);
gai.ar_name = hostname.c_str();
assert(!getaddrinfo_a(GAI_NOWAIT, &gaip, 1, NULL));
struct timespec ts = { 0, 42 };
gai_suspend(&gaip, 1, &ts);
while (gai_cancel(gaip) == EAI_NOTCANCELED)
gai_suspend(&gaip, 1, &ts);
}
}
int main(int argc, char *argv[]) {
std::thread t1(beatit);
/*std::thread t2(beatit);
std::thread t3(beatit);
std::thread t4(beatit);
std::thread t5(beatit);
std::thread t6(beatit);*/
while (true) {}
}
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>From glibc-bugs-return-35183-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 27 11:31:50 2016
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Received: (qmail 40724 invoked by uid 48); 27 Nov 2016 11:31:34 -0000
From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/16826] getaddrinfo() doesn't get scope ID for IPv6-only look-ups
Date: Sun, 27 Nov 2016 11:31:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Mike Frysinger from comment #5)
> is the nss API documented anywhere ?
There is a section in the manual.
> do we have a callback that'd provide
> IPv6-only resolution ? or do we need to add one ?
struct gaih_addrtuple (which is used by the version 4 name lookup API) contains
a scope ID. I have not checked if it is properly propagated up to the
application. nss_files does not used it; we could fix that as a first step.
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>From glibc-bugs-return-35184-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Nov 27 12:11:32 2016
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Subject: [Bug network/16826] getaddrinfo() doesn't get scope ID for IPv6-only look-ups
Date: Sun, 27 Nov 2016 12:11:00 -0000
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--- Comment #7 from Michał Górny <mgorny at gentoo dot org> ---
(In reply to Mike Frysinger from comment #5)
> do we have a callback that'd provide IPv6-only resolution ?
The API <4 can do IPv6-only but it doesn't support returning scope IDs. The API
4 supports that but doesn't support IPv6-only resolution.
> or do we need to add one ?
Bug #14413 requested that.
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>From glibc-bugs-return-35185-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 28 07:29:59 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19941] pthread_cond_broadcast wakes only one thread when used with PTHREAD_PRIO_INHERIT mutex on powerpc
Date: Mon, 28 Nov 2016 07:29:00 -0000
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xiangcb at 163 dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xiangcb at 163 dot com
--- Comment #1 from xiangcb at 163 dot com ---
You may refer to this bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=18463
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>From glibc-bugs-return-35186-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 28 13:42:13 2016
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Subject: [Bug malloc/14827] free() doesn't honor M_TRIM_THRESHOLD
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Carlos O'Donell <carlos at redhat dot com> changed:
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CC| |carlos at redhat dot com
--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
The way we are going to improve this situation is IMO by moving from fastbins
to per-thread caches, and those caches will have a size limit to limit RSS
growth.
The fastbins are not as fast as lockless per-thread caches which is the common
implementation across tcmalloc and jemalloc.
We already have an implementation in dj/malloc which has been proposed and
posted.
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>From glibc-bugs-return-35187-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 28 16:34:58 2016
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
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Eric Blake <eblake at redhat dot com> changed:
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--- Comment #13 from Eric Blake <eblake at redhat dot com> ---
(In reply to Paul Eggert from comment #12)
> It's not a POSIX violation if the shell executes "./a.out <&-" with stdin
> being closed. Although the command is not portable as-is and POSIX allows
> the shell to act as if the command were "./a.out </dev/null", POSIX doesn't
> require the shell to do so. Common shells close stdin (which POSIX also
> allows) and GNU utilities should do the right thing in this case. This
> action by common shells is what caused coreutils Bug#25029.
POSIX explicitly states that starting an executable with fd 0, 1, or 2 closed
puts the behavior of that executable outside the bounds of POSIX (that is, it
is undefined behavior to attempt to run "./a.out <&-", so POSIX no longer has
any say, and all bets are off). So I definitely agree that this is not a
conformance issue, at least for freopen(stdin).
>
> For what it's worth, I changed Gnulib to work around the glibc freopen
> behavior, which is unexpected by so many uses of freopen that I think it
> qualifies as a bug even if it's not a POSIX-conformance issue. This should
> fix the coreutils bug. Non-Gnulib-using applications are still vulnerable to
> the glibc problem.
Indeed, quality of implementation demands that we tolerate closed fds during
freopen(), since we already go out of our way to tolerate closed fds during
popen(), which is yet another place where POSIX has no direct say.
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>From glibc-bugs-return-35188-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 28 17:46:22 2016
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Subject: [Bug build/20750] Build fails with default PIE enabled gcc-6.x
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c9070e6305c08365c5f8b604bdca39c699d70cfa
commit c9070e6305c08365c5f8b604bdca39c699d70cfa
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Nov 28 09:44:49 2016 -0800
X86_64: Don't use PLT nor GOT in static archives [BZ #20750]
There is no need to use PLT nor GOT in static archives to branch to a
function, regardless whether static archives is compiled with PIC or
not. When static archives are used to create dynamic executable,
PLT/GOT may be used. The resulting executable still works correctly.
[BZ #20750]
* sysdeps/x86_64/sysdep.h (JUMPTARGET): Check SHARED instead
of PIC.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
sysdeps/x86_64/sysdep.h | 3 ++-
2 files changed, 8 insertions(+), 1 deletions(-)
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Subject: [Bug build/20750] Build fails with default PIE enabled gcc-6.x
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--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
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Subject: [Bug stdio/15589] freopen would close oldfd even though oldfd is same as newfd
Date: Mon, 28 Nov 2016 19:53:00 -0000
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--- Comment #14 from Rich Felker <bugdal at aerifal dot cx> ---
I agree with Eric's assessment in comment 13.
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Subject: [Bug dynamic-link/17645] RFE: Improve performance of dynamic loader for deeply nested DSO dependencies.
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
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Subject: [Bug nss/20874] getaddrinfo_a segfault
Date: Tue, 29 Nov 2016 08:02:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |fweimer at redhat dot com
Resolution|--- |INVALID
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Matt Corallo from comment #0)
> void beatit() {
> struct gaicb gai;
> struct gaicb *gaip = &gai;
>
> while (1) {
> memset(&gai, 0, sizeof(gai));
>
> fprintf(stderr, "OK, cleared gai, now calling gai_a\n");
> std::string hostname(host);
> gai.ar_name = hostname.c_str();
>
> assert(!getaddrinfo_a(GAI_NOWAIT, &gaip, 1, NULL));
getaddrinfo_a does not make copy of the submitted requests, so this code has
multiple use-after-free issues (the gai local variable, and the backing string
for hostname).
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Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Tue, 29 Nov 2016 08:03:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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CC| |fweimer at redhat dot com
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Subject: [Bug localedata/20865] charmaps: cp950 does not contain EUDC/PUA mappings
Date: Tue, 29 Nov 2016 08:03:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|iconv: cp950 does not |charmaps: cp950 does not
|contain EUDC/PUA mappings |contain EUDC/PUA mappings
Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Mike Frysinger <vapier at gentoo dot org> ---
we currently alias CP950 to BIG5. i don't think we want to add all these
mappings to BIG5 since it explicitly carves out that spaces as "reserved":
https://en.wikipedia.org/wiki/Big5#A_more_detailed_look_at_the_organization
which means we need to copy BIG5 to CP950 and add the MS extensions. then drop
the alias of CP950->BIG5.
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Subject: [Bug nss/20874] getaddrinfo_a segfault
Date: Tue, 29 Nov 2016 08:23:00 -0000
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--- Comment #2 from Matt Corallo <swbza at bluematt dot me> ---
The way I read the man page, after gai_cancel returns anything other than
EAI_NOTCANCELED (ie it has returned EAI_CANCELED or EAI_ALLDONE), the memory is
again the user's to do with as the user pleases. If that is not the case, when
is the gaicb struct again free for the user to release?
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Subject: [Bug nss/20874] getaddrinfo_a segfault
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Matt Corallo <swbza at bluematt dot me> changed:
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--- Comment #3 from Matt Corallo <swbza at bluematt dot me> ---
Changing back to UNCONFIRMED, as the loop as written clearly waits for
gai_cancel to return non-NOTCANCELED before allowing std::string to release the
backing memory, or wiping the gaicb struct.
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/20874] getaddrinfo_a segfault
Date: Tue, 29 Nov 2016 08:43:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags|security- |security?
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Matt Corallo from comment #2)
> The way I read the man page, after gai_cancel returns anything other than
> EAI_NOTCANCELED (ie it has returned EAI_CANCELED or EAI_ALLDONE), the memory
> is again the user's to do with as the user pleases. If that is not the case,
> when is the gaicb struct again free for the user to release?
You are right, I was confused. This does look like a bug.
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>From glibc-bugs-return-35198-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 29 09:40:45 2016
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Tue, 29 Nov 2016 09:40:00 -0000
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Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
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CC| |markus at trippelsdorf dot de
--- Comment #4 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
It breaks "make check":
markus@x4 iconvdata % diff -u tst-GBK.charmap.table tst-GBK.table
--- tst-GBK.charmap.table 2016-11-29 10:39:30.511929077 +0100
+++ tst-GBK.table 2016-11-29 10:39:30.528595379 +0100
@@ -126,7 +126,6 @@
0x7D 0x007D
0x7E 0x007E
0x7F 0x007F
-0x80 0x20AC
0x8140 0x4E02
0x8141 0x4E04
0x8142 0x4E05
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>From glibc-bugs-return-35199-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 29 10:52:03 2016
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Subject: [Bug localedata/20862] mo_MD@cyrillic: new locale
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--- Comment #4 from Vlad <cybernenea11 at cyberdude dot com> ---
Created attachment 9678
--> https://sourceware.org/bugzilla/attachment.cgi?id=9678&action=edit
Moldovan Cyrillic language locale rev 0.2
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>From glibc-bugs-return-35200-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 29 10:55:21 2016
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From: "cybernenea11 at cyberdude dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/20862] mo_MD@cyrillic: new locale
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--- Comment #5 from Vlad <cybernenea11 at cyberdude dot com> ---
(a) Moldovan Cyrillic alphabet is different from the Romanian Cyrillic.
Romanian Cyrillic alphabet is not used anymore and contained a number of
letters such as Izhitsa, Fita and little Yus not found in Moldovan Cyrillic. So
i think it's incorrect to use 'ro' tag, if it's possible we should use 'mo'
tag.
(b) Fixed
(c) Fixed
(d) Filled
(e) Tested, looks like everything's ok.
Thank You.
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>From glibc-bugs-return-35201-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 29 17:58:16 2016
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Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Tue, 29 Nov 2016 17:58:00 -0000
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
I checked in a follow-on fix for the test case failure in commit
0415d32187731ac03ef6c72c6cfb25314d4b0133.
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>From glibc-bugs-return-35202-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 29 23:19:51 2016
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From: "arthur200126 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20885] New: Replace GBK's commented-out PUA mappings with Unicode 4.1 ones from GB18030
Date: Tue, 29 Nov 2016 23:19:00 -0000
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Bug ID: 20885
Summary: Replace GBK's commented-out PUA mappings with Unicode
4.1 ones from GB18030
Product: glibc
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It appears the mappings in question in bug 19575 can be applied to GBK as a
part of PUA-elision for round-trip conversions too. All of the 95 commented-out
GBK code points have appropriate Unicode code points in the GB18030 mapping.
This should help with consuming legacy data.
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>From glibc-bugs-return-35203-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 00:59:30 2016
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Subject: [Bug localedata/20865] charmaps: cp950 does not contain EUDC/PUA mappings
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--- Comment #2 from Mingye Wang <arthur200126 at gmail dot com> ---
> I don't think we want to add all these mappings to BIG5 since it
> explicitly carves out that spaces as "reserved":
If you consider how GB 18030's user-defined areas are mapped, "reserved for
user-defined characters" may be acceptable for PUA. The "reserved, not for
user-defined" part is not mapped to PUA in cp950 and big5-2003.
> which means we need to copy BIG5 to CP950 and add the MS extensions
I went back to libiconv's charts and read a few lines up too see all of MS's
modifications & extensions; now it does sound messy enough for a split. (0xA1F2
and 0xA1F3 are entertainingly weird.)
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>From glibc-bugs-return-35204-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 14:00:43 2016
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Subject: [Bug stdio/4099] Overly agressive caching by stream i/o functions.
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=705a79f82560ff6472cebed86aa5db04cdea3bce
commit 705a79f82560ff6472cebed86aa5db04cdea3bce
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Nov 30 14:59:27 2016 +0100
libio: Limit buffer size to 8192 bytes [BZ #4099]
This avoids overly large buffers with network file systems which report
very large block sizes.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
NEWS | 6 ++++++
libio/filedoalloc.c | 2 +-
3 files changed, 13 insertions(+), 1 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug stdio/4099] Overly agressive caching by stream i/o functions.
Date: Wed, 30 Nov 2016 14:01:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #11 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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Subject: [Bug stdio/4099] Overly agressive caching by stream i/o functions.
Date: Wed, 30 Nov 2016 14:29:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1400144
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Subject: [Bug dynamic-link/16628] Segfault after a binary without pthread dlopen()s a library linked with pthread
Date: Wed, 30 Nov 2016 15:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=16628
--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9e78f6f6e7134a5f299cc8de77370218f8019237
commit 9e78f6f6e7134a5f299cc8de77370218f8019237
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Nov 30 15:59:57 2016 +0100
Implement _dl_catch_error, _dl_signal_error in libc.so [BZ #16628]
This change moves the main implementation of _dl_catch_error,
_dl_signal_error to libc.so, where TLS variables can be used
directly. This removes a writable function pointer from the
rtld_global variable.
For use during initial relocation, minimal implementations of these
functions are provided in ld.so. These are eventually interposed
by the libc.so implementations. This is implemented by compiling
elf/dl-error-skeleton.c twice, via elf/dl-error.c and
elf/dl-error-minimal.c.
As a side effect of this change, the static version of dl-error.c
no longer includes support for the
_dl_signal_cerror/_dl_receive_error mechanism because it is only
used in ld.so.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 78 +++++++
dlfcn/dlerror.c | 4 +-
dlfcn/dlinfo.c | 4 +-
dlfcn/dlmopen.c | 4 +-
dlfcn/dlopen.c | 2 +-
elf/Makefile | 21 ++-
elf/Versions | 6 +
elf/dl-close.c | 2 +-
elf/dl-error-minimal.c | 23 ++
elf/dl-error-skeleton.c | 230 ++++++++++++++++++++
elf/dl-error.c | 210 +-----------------
elf/dl-libc.c | 4 +-
elf/dl-sym.c | 8 +-
elf/dl-tsd.c | 53 -----
elf/rtld.c | 19 --
elf/tst-latepthread.c | 105 +++++++++
elf/tst-latepthreadmod.c | 33 +++
nptl/nptl-init.c | 4 -
sysdeps/generic/ldsodefs.h | 46 +++--
sysdeps/generic/localplt.data | 3 +
sysdeps/unix/sysv/linux/aarch64/localplt.data | 3 +
sysdeps/unix/sysv/linux/alpha/localplt.data | 3 +
sysdeps/unix/sysv/linux/arm/localplt.data | 3 +
sysdeps/unix/sysv/linux/hppa/localplt.data | 3 +
sysdeps/unix/sysv/linux/i386/localplt.data | 3 +
sysdeps/unix/sysv/linux/ia64/localplt.data | 3 +
sysdeps/unix/sysv/linux/m68k/localplt.data | 3 +
sysdeps/unix/sysv/linux/microblaze/localplt.data | 3 +
sysdeps/unix/sysv/linux/nios2/localplt.data | 3 +
.../sysv/linux/powerpc/powerpc32/fpu/localplt.data | 3 +
.../linux/powerpc/powerpc32/nofpu/localplt.data | 3 +
.../sysv/linux/powerpc/powerpc64/localplt.data | 3 +
sysdeps/unix/sysv/linux/s390/localplt.data | 3 +
sysdeps/unix/sysv/linux/sh/localplt.data | 3 +
.../unix/sysv/linux/sparc/sparc32/localplt.data | 3 +
.../unix/sysv/linux/sparc/sparc64/localplt.data | 3 +
sysdeps/x86_64/localplt.data | 3 +
37 files changed, 595 insertions(+), 315 deletions(-)
create mode 100644 elf/dl-error-minimal.c
create mode 100644 elf/dl-error-skeleton.c
delete mode 100644 elf/dl-tsd.c
create mode 100644 elf/tst-latepthread.c
create mode 100644 elf/tst-latepthreadmod.c
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>From glibc-bugs-return-35208-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 15:05:28 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/16628] Segfault after a binary without pthread dlopen()s a library linked with pthread
Date: Wed, 30 Nov 2016 15:05:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
Flags|security? |security-
--- Comment #7 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Rich Felker from comment #2)
> My understanding is that this usage is explicitly unsupported. However, if
> that's the case, it should fail cleanly (with the error message in dlerror)
> rather than crashing or exiting the program so I believe this bug report is
> valid.
We have a lot of support code to load libpthread late and even go
multi-threaded after that. dlopen of libpthread is absolutely required because
a lot of shared objects link against libpthread, and some of them are opened
from main programs which do not link against libpthread. Whether it is
worthwhile to support going multi-thraded after dlopen is a different question,
and we certainly a substantial bugs in this area.
Some of the hairier issues have disappeared over time because we use TLS in
libc.so, so lazy initialization of TLS is gone. But there is still substantial
work before dlopen-then-pthread_create works reliably.
Fixed in 2.25.
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>From glibc-bugs-return-35209-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 15:42:02 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/20844] getaddrinfo() fails in some instances with AF_UNSPEC set
Date: Wed, 30 Nov 2016 15:42:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20844
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
The pcap file indicates that two A queries are sent, and no AAAA query. The
queries are sent in parallel, with different source ports. This is rather odd.
With the glibc stub resolver, there should be an A query and an AAAA query,
from the same source port.
Is a VM involved somewhere? Did you capture the packets in the VM or outside
of it?
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>From glibc-bugs-return-35210-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 15:43:41 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/17730] thread-local storage is sometimes improperly free()'d after being __libc_memalign()'d
Date: Wed, 30 Nov 2016 15:43:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via b04beebf0731c0da49bf9113bf299acf56e4c2e5 (commit)
from 9e78f6f6e7134a5f299cc8de77370218f8019237 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b04beebf0731c0da49bf9113bf299acf56e4c2e5
commit b04beebf0731c0da49bf9113bf299acf56e4c2e5
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Nov 30 16:23:58 2016 +0100
ld.so: Remove __libc_memalign
It is no longer needed since commit 6c444ad6e953dbdf9c7be065308a0a777
(elf: Do not use memalign for TCB/TLS blocks allocation [BZ #17730]).
Applications do not link against ld.so and will use the definition in
libc.so, so there is no ABI impact.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 57 ++++++++++++++++++++
elf/Versions | 4 +-
elf/dl-minimal.c | 18 +++----
sysdeps/generic/localplt.data | 6 +--
sysdeps/nacl/ld.abilist | 1 -
sysdeps/unix/sysv/linux/aarch64/ld.abilist | 1 -
sysdeps/unix/sysv/linux/aarch64/localplt.data | 7 +--
sysdeps/unix/sysv/linux/alpha/ld.abilist | 1 -
sysdeps/unix/sysv/linux/alpha/localplt.data | 7 +--
sysdeps/unix/sysv/linux/arm/ld.abilist | 1 -
sysdeps/unix/sysv/linux/arm/localplt.data | 7 +--
sysdeps/unix/sysv/linux/hppa/ld.abilist | 1 -
sysdeps/unix/sysv/linux/hppa/localplt.data | 6 +--
sysdeps/unix/sysv/linux/i386/ld.abilist | 1 -
sysdeps/unix/sysv/linux/i386/localplt.data | 6 +--
sysdeps/unix/sysv/linux/ia64/ld.abilist | 1 -
sysdeps/unix/sysv/linux/ia64/localplt.data | 6 +--
sysdeps/unix/sysv/linux/m68k/coldfire/ld.abilist | 1 -
sysdeps/unix/sysv/linux/m68k/localplt.data | 6 +--
sysdeps/unix/sysv/linux/m68k/m680x0/ld.abilist | 1 -
sysdeps/unix/sysv/linux/microblaze/ld.abilist | 1 -
sysdeps/unix/sysv/linux/microblaze/localplt.data | 7 +--
sysdeps/unix/sysv/linux/mips/mips32/ld.abilist | 1 -
sysdeps/unix/sysv/linux/mips/mips64/n32/ld.abilist | 1 -
sysdeps/unix/sysv/linux/mips/mips64/n64/ld.abilist | 1 -
sysdeps/unix/sysv/linux/nios2/ld.abilist | 1 -
sysdeps/unix/sysv/linux/nios2/localplt.data | 6 +--
.../sysv/linux/powerpc/powerpc32/fpu/localplt.data | 6 +--
.../unix/sysv/linux/powerpc/powerpc32/ld.abilist | 1 -
.../linux/powerpc/powerpc32/nofpu/localplt.data | 6 +--
.../sysv/linux/powerpc/powerpc64/ld-le.abilist | 1 -
.../unix/sysv/linux/powerpc/powerpc64/ld.abilist | 1 -
.../sysv/linux/powerpc/powerpc64/localplt.data | 6 +--
sysdeps/unix/sysv/linux/s390/localplt.data | 13 +----
sysdeps/unix/sysv/linux/s390/s390-32/ld.abilist | 1 -
sysdeps/unix/sysv/linux/s390/s390-64/ld.abilist | 1 -
sysdeps/unix/sysv/linux/sh/ld.abilist | 1 -
sysdeps/unix/sysv/linux/sh/localplt.data | 6 +--
sysdeps/unix/sysv/linux/sparc/sparc32/ld.abilist | 1 -
.../unix/sysv/linux/sparc/sparc32/localplt.data | 6 +--
sysdeps/unix/sysv/linux/sparc/sparc64/ld.abilist | 1 -
.../unix/sysv/linux/sparc/sparc64/localplt.data | 6 +--
.../sysv/linux/tile/tilegx/tilegx32/ld.abilist | 1 -
.../sysv/linux/tile/tilegx/tilegx64/ld.abilist | 1 -
sysdeps/unix/sysv/linux/tile/tilepro/ld.abilist | 1 -
sysdeps/unix/sysv/linux/x86_64/64/ld.abilist | 1 -
sysdeps/unix/sysv/linux/x86_64/x32/ld.abilist | 1 -
sysdeps/x86_64/localplt.data | 6 +--
48 files changed, 106 insertions(+), 119 deletions(-)
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>From glibc-bugs-return-35211-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 16:16:18 2016
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From: "arthur200126 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20865] charmaps: cp950 does not contain EUDC/PUA mappings
Date: Wed, 30 Nov 2016 16:16:00 -0000
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--- Comment #3 from Mingye Wang <arthur200126 at gmail dot com> ---
> now it does sound messy enough for a split.
Hmm, glibc is already using the "MICSFT/WINDOWS" cp950 definition for BIG5's
charmap. So it's not that bad...
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>From glibc-bugs-return-35212-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 18:33:15 2016
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Subject: [Bug libc/18093] Corrupted aux-cache causes ldconfig to segfault
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>From glibc-bugs-return-35213-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 18:45:49 2016
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Subject: [Bug dynamic-link/20890] New: ldconfig: fsync the files before atomic rename
Date: Wed, 30 Nov 2016 18:45:00 -0000
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Bug ID: 20890
Summary: ldconfig: fsync the files before atomic rename
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
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Flags: security-
ldconfig does not fsync the temporary files for the caches before renaming them
into the final place. As a result, a crash at an inopportune moment can leave
corrupted crashes behind.
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>From glibc-bugs-return-35215-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 18:45:50 2016
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Subject: [Bug libc/18093] Corrupted aux-cache causes ldconfig to segfault
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| |illa/show_bug.cgi?id=20890
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Subject: [Bug dynamic-link/20890] ldconfig: fsync the files before atomic rename
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| |illa/show_bug.cgi?id=18093
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>From glibc-bugs-return-35217-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 30 22:01:35 2016
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Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
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--- Comment #22 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4b8790c81c1a7b870a43810ec95e08a2e501123d
commit 4b8790c81c1a7b870a43810ec95e08a2e501123d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 25 ++++++++++
sysdeps/x86/cpu-features.c | 14 +++++
sysdeps/x86/cpu-features.h | 6 ++
sysdeps/x86_64/dl-machine.h | 24 ++++++++-
sysdeps/x86_64/dl-trampoline.S | 20 ++++++++
sysdeps/x86_64/dl-trampoline.h | 104 +++++++++++++++++++++++++++++++++++++++-
6 files changed, 190 insertions(+), 3 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20508] _dl_runtime_resolve_avx/_dl_runtime_profile_avx512 cause transition penalty
Date: Wed, 30 Nov 2016 22:01:00 -0000
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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The branch, release/2.24/master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4b8790c81c1a7b870a43810ec95e08a2e501123d
commit 4b8790c81c1a7b870a43810ec95e08a2e501123d
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 25 ++++++++++
sysdeps/x86/cpu-features.c | 14 +++++
sysdeps/x86/cpu-features.h | 6 ++
sysdeps/x86_64/dl-machine.h | 24 ++++++++-
sysdeps/x86_64/dl-trampoline.S | 20 ++++++++
sysdeps/x86_64/dl-trampoline.h | 104 +++++++++++++++++++++++++++++++++++++++-
6 files changed, 190 insertions(+), 3 deletions(-)
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>From glibc-bugs-return-35218-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 01 00:24:38 2016
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From: "gjc at alum dot mit.edu" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/20853] raise in catch_segfault supresses kernel messages for segfaults under libSegFault.so in Linux
Date: Thu, 01 Dec 2016 00:24:00 -0000
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George J Carrette <gjc at alum dot mit.edu> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gjc at alum dot mit.edu
--- Comment #2 from George J Carrette <gjc at alum dot mit.edu> ---
Created attachment 9680
--> https://sourceware.org/bugzilla/attachment.cgi?id=9680&action=edit
adds new environment variable options to libSegFault.so
This is my test plan. The point of the plan is to show that
the new features enable libsegfault to be used in combination
with the operating system kernel syslog messages
reporting segfault events.
In one terminal window observe the kernel messages, e.g
sudo tail -f /var/log/messages
In another window, you must have a program that is able to create
faults. I have such a program that can do a simple segfault, causing
different kernel messages.
dofault0 segfault
causes
dofault0[54022]: segfault at 0 ip 0000000000400e86 sp 00007fffffffe2f0 error 4
in dofault0[400000+3000]
dofault0 illegal
causes
traps: dofault0[54023] trap invalid opcode ip:400a2a sp:7fffffffe2f8 error:0 in
dofault0[400000+3000]
dofault0 stackwipeout
causes
kernel: [10227008.852358] traps: dofault0[54041] general protection ip:4010ad
sp:7fffffffe088 error:0 in dofault0[400000+3000]
But to test these you do not need that fancy utility (which I shall publish
later if there is interest), instead you could use siod (scheme in one defun)
from some of the earliest versions having
siod "(%%%memref 0)"
causes
siod[54101]: segfault at 0 ip 00007ffff7bcb8e9 sp 00007fffffffdd70 error 4 in
libsiod.so[7ffff7bae000+2b000]
siod "(%%%memref -1)"
causes
siod[54102]: segfault at ffffffffffffffff ip 00007ffff7bcb8e9 sp
00007fffffffdd70 error 5 in libsiod.so[7ffff7bae000+2b000]
So here is the A/B test:
(A) standard existing behavior not using the enhancements
env LD_PRELOAD=/usr/local/lib/libSegFault.so siod "(%%%memref 0)"
You get the nice register dump and stack backtrace, but you do not
get anything in /var/log/messages
(B) utilize the new features:
env SEGFAULT_SA_RESETHAND_FLAG=1 SEGFAULT_NO_RAISE_IN_HANDLER=1
LD_PRELOAD=/usr/local/lib/libSegFault.so siod "(%%%memref 0)"
Then you will see the expected result in /var/log/messages
as if the LD_PRELOAD never happened.
Now you might object and say that the problem is with the version of
GNU Linux that I am using (Centos) or some kernel configuration.
But I have been using CentOS 7.1 fresh download with no modifications.
I will see what happens with the Ubuntu distribution, and am open
to suggestions to try in other operating system kernels using glibc.
However, the env SEGFAULT_SA_RESETHAND_FLAG=1 option is a solid
option to have in any case, unless you want to move the
SIG_DFL code to the start of the catch_segfault function.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20853] raise in catch_segfault supresses kernel messages for segfaults under libSegFault.so in Linux
Date: Thu, 01 Dec 2016 00:28:00 -0000
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--- Comment #3 from George J Carrette <gjc at alum dot mit.edu> ---
Now that I have submitted a patch I will execute the current employer
release document so that it can be used.
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>From glibc-bugs-return-35220-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 01 10:19:17 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20894] New: The strange behavior of the log function
Date: Thu, 01 Dec 2016 10:19:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20894
Bug ID: 20894
Summary: The strange behavior of the log function
Product: glibc
Version: 2.19
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Priority: P2
Component: math
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Reporter: l6979630 at hotmail dot com
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I found this bug on ubuntu 14.04 with glibc 2.19 and arch linux with glibc
2.24.
#include<cstdio>
#include<cmath>
using namespace std;
double p[5];
int ans;
double yy(int x){
return log(x);
}
double cc(int x){
return p[x];
}
int main(){
p[2]=log(2);
double a = log(2)/log(2);
printf("%d\n",(int)a);
printf("%d\n",(int)(log(2)/log(2)));
printf("%d\n",(int)(yy(2)/yy(2)));
printf("%d\n",(int)(cc(2)/cc(2)));
}
Just compile this program in "g++ -match=i686 -m32 code,cpp"
Then you will got outputs like:
1
0
0
1
It is really strange.......
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>From glibc-bugs-return-35221-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 01 10:26:33 2016
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Subject: [Bug math/20894] The strange behavior of the log function
Date: Thu, 01 Dec 2016 10:26:00 -0000
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--- Comment #1 from Minglei Li <l6979630 at hotmail dot com> ---
This bug don't appear in centos 6.5 with glibc 2.12
It outputs:
1
1
1
1
I compile this program in centos 6.5 with glibc 2.12.
Then it still doesn't work until I static link libm
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20894] The strange behavior of the log function
Date: Thu, 01 Dec 2016 10:32:00 -0000
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
Try compiling with -fexcess-precision=standard.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20853] raise in catch_segfault supresses kernel messages for segfaults under libSegFault.so in Linux
Date: Thu, 01 Dec 2016 17:04:00 -0000
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--- Comment #4 from George J Carrette <gjc at alum dot mit.edu> ---
I dug into kernel sources a bit to explain the current behavior.
A test like this: bash -c 'kill -SEGV $$'
Ends up going through a codepath in kernel/signal.c
You can get a message from that using
sysctl kernel.print-fatal-signals=1
which is off by default and a bit verbose.
But the nice kernel segfault messages (and related messages)
come from the architecture-specific code modules in the kernel
and you don't reach those code paths using the raise() (i.e. kill)
api.
So that explains why we want to avoid the call to raise() inside
the libSegFault.so if we want to be able to transparently
insert it via LD_PRELOAD without changing what info we
get in the kernel syslog.
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https://sourceware.org/bugzilla/show_bug.cgi?id=20900
Bug ID: 20900
Summary: __res_maybe_init doesn't work with DHCP
Product: glibc
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: nss
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
On Fedora 24, there is
[hjl@gnu-6 ~]$ ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 35 Nov 30 11:44 /etc/resolv.conf ->
/var/run/NetworkManager/resolv.conf
[hjl@gnu-6 ~]$
Before NetworkManager starts DHCP, /var/run/NetworkManager/resolv.conf
doesn't exist and the content of /etc/resolv.conf may change over time.
But __res_maybe_init never checks if /etc/resolv.conf changes. When a
daemon process starts before DHCP or /var/run/NetworkManager/resolv.conf
is changed by DHCP, the daemon process gets the wrong DNS results.
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>From glibc-bugs-return-35225-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 01 19:34:48 2016
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Subject: [Bug network/984] Respond to changed resolv.conf in gethostbyname
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #17 from H.J. Lu <hjl.tools at gmail dot com> ---
*** Bug 20900 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-35226-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 01 19:34:49 2016
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Subject: [Bug nss/20900] __res_maybe_init doesn't work with DHCP
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Dup.
*** This bug has been marked as a duplicate of bug 984 ***
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>From glibc-bugs-return-35227-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 02 00:26:45 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20894] The strange behavior of the log function
Date: Fri, 02 Dec 2016 00:26:00 -0000
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--- Comment #3 from Minglei Li <l6979630 at hotmail dot com> ---
(In reply to Andreas Schwab from comment #2)
> Try compiling with -fexcess-precision=standard.
It says "cc1plus: sorry,unimplemented: -fexcess-precision=standard for C++"
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>From glibc-bugs-return-35228-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 02 00:46:22 2016
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Subject: [Bug math/20894] The strange behavior of the log function
Date: Fri, 02 Dec 2016 00:46:00 -0000
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--- Comment #4 from Minglei Li <l6979630 at hotmail dot com> ---
When I complie and static link libm this program on Centos 6.5(glibc 2.12),It
works well on any other systems.
When I complie and dynamic link this program on Centos 6.5(glibc 2.12),It works
well on Centos 6.5,but it has problems on other systems.
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>From glibc-bugs-return-35229-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 02 04:12:18 2016
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Subject: [Bug localedata/20903] New: glibc's Windows single-byte pages don't map like Windows for previously unmapped points
Date: Fri, 02 Dec 2016 04:12:00 -0000
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Bug ID: 20903
Summary: glibc's Windows single-byte pages don't map like
Windows for previously unmapped points
Product: glibc
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CC: libc-locales at sourceware dot org
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Contrary to what MSDN "App UI" archives say, Windows' code pages don't map
unassigned code points like 0x81 in cp1252 to U+FFFD, but uses a Unicode code
point of the same value like Latin with C1. This bidirectional "windows code
page behavior" is documented in the "best fit" charts.[1]
[1]:
http://ftp.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WindowsBestFit/readme.txt
Since these Windows mappings for these Windows code pages are seldom
implemented outside of Windows, and nobody would like to use an incomplete set
of C1 characters in interchange, this task is set to minor importance. It's
likely that only archaeologists[2] trying to decode or reproduce
multiple-encoded UTF-8[3][4] will find this task helpful.
[2]: "ftfy: fixes text for you", <https://ftfy.readthedocs.io>
[3]: "WTF-8, a transformation format of code page 1252",
<http://www-uxsup.csx.cam.ac.uk/~fanf2/hermes/doc/qsmtp/draft-fanf-wtf8.html>
[4]: " the future of publishing at
W3C", <https://twitter.com/koalie/status/506821684687413248>
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>From glibc-bugs-return-35230-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 02 04:16:38 2016
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Subject: [Bug localedata/20903] glibc's Windows single-byte pages don't map like Windows for previously unmapped points
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--- Comment #1 from Mingye Wang <arthur200126 at gmail dot com> ---
Microsoft's "App UI" archives:
https://msdn.microsoft.com/en-us/library/cc195054.aspx
Correction: U+FFFE mentioned before should be changed to U+FFFD.
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Subject: [Bug nss/20874] getaddrinfo_a segfault
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--- Comment #5 from Wladimir van der Laan <laanwj at gmail dot com> ---
Can confirm that this sample (even without uncommenting the threads) crashes
quickly with the following traceback:
(gdb) bt
#0 0x00007ffff79b77f0 in __gai_notify (req=req@entry=0x7ffff00648a0) at
gai_notify.c:122
#1 0x00007ffff79b707c in handle_requests (arg=<optimized out>) at
gai_misc.c:328
#2 0x00007ffff7bc170a in start_thread (arg=0x7ffff4d11700) at
pthread_create.c:333
#3 0x00007ffff715b82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
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--- Comment #6 from Wladimir van der Laan <laanwj at gmail dot com> ---
(above with libc6 Version: 2.23-0ubuntu4)
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>From glibc-bugs-return-35233-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 02 09:28:15 2016
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Subject: [Bug network/984] Respond to changed resolv.conf in gethostbyname
Date: Fri, 02 Dec 2016 09:28:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|i686-pc-linux-gnu |
CC| |vapier at gentoo dot org
Host|i686-pc-linux-gnu |
See Also| |https://bugs.gentoo.org/sho
| |w_bug.cgi?id=177416
Assignee|gotom at debian dot or.jp |unassigned at sourceware dot org
Build|i686-pc-linux-gnu |
--- Comment #18 from Mike Frysinger <vapier at gentoo dot org> ---
(In reply to Karl from comment #15)
sorry, but your security claim makes no sense. if a hacker has compromised
your system enough to modify resolv.conf, then you've already lost. claiming
reloading it on the fly fixes things is a bit ridiculous.
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Subject: [Bug localedata/20903] charmaps: glibc's Windows single-byte pages don't map like Windows for previously unmapped points
Date: Fri, 02 Dec 2016 09:34:00 -0000
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|glibc's Windows single-byte |charmaps: glibc's Windows
|pages don't map like |single-byte pages don't map
|Windows for previously |like Windows for previously
|unmapped points |unmapped points
--- Comment #2 from Mike Frysinger <vapier at gentoo dot org> ---
it'd help to have sample files/commands posted to the bug so that when someone
does look into it, we have exact reproduction as the reporter expects
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Subject: [Bug localedata/20903] charmaps: glibc's Windows single-byte pages don't map like Windows for previously unmapped points
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--- Comment #3 from Mingye Wang <arthur200126 at gmail dot com> ---
$ iconv -f utf-8 -t windows-1252 <<< $'\u0081' | hexdump -C
iconv: illegal input sequence at position 0
(Expect output is \x80\n.)
$ iconv -f windows-874 -t utf-32le <<< $'\x9f\x81' | hexdump -C
iconv: illegal input sequence at position 0
(Expect output is \x9f\0\0\0\x81\0\0\0\n\0\0\0.)
Theoretically this should work when things are fixed:
$ blob=$' '
$ blob=${blob%' '}$'\u00a0'
$ blob=$(iconv -t cp1252 -f utf-8 <<< "$blob")
$ blob=$(iconv -t cp1252 -f utf-8 <<< "$blob") # ERROR
$ blob=$(iconv -t iso-8859-1 -f utf-8 <<< "$blob")
$ blob=$(iconv -t cp1252 -f utf-8 <<< "$blob")
$ blob=$(iconv -t iso-8859-1 -f utf-8 <<< "$blob")
$ [[ "$blob" == $'\xa0' ]]; echo $? # expected: 0
* * *
Correction: Windows only does the same-value assignment for C1 range
(0x80-0x9f). Outside of this range, Windows assigns PUA mappings as if they
were EUDC chars.[1] (Should have read "best fit" more carefully.)
[1]: https://bugs.python.org/issue28712#msg281044
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Subject: [Bug libc/19826] invalid pointer returned from __tls_get_addr with static linking
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=20915
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Subject: [Bug dynamic-link/20915] New: global-dynamic TLS broken on aarch64
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Bug ID: 20915
Summary: global-dynamic TLS broken on aarch64
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Target: aarch64
Flags: security-
elf/tst-tls-manydynamic fails on aarch64.
This started happening with commit 17af5da98cd2c9ec958421ae2108f877e0945451
(fix non-LE TLS in static programs), due to the hunk in nptl/allocatestack.c:
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
index 60b34dc..3016a2e 100644
--- a/nptl/allocatestack.c
+++ b/nptl/allocatestack.c
@@ -1207,9 +1207,12 @@ init_one_static_tls (struct pthread *curp, struct
link_map *map)
# error "Either TLS_TCB_AT_TP or TLS_DTV_AT_TP must be defined"
# endif
- /* We cannot delay the initialization of the Static TLS area, since
- it can be accessed with LE or IE, but since the DTV is only used
- by GD and LD, we can delay its update to avoid a race. */
+ /* Fill in the DTV slot so that a later LD/GD access will find it. */
+ dtv_t *dtv = GET_DTV (TLS_TPADJ (curp));
+ dtv[map->l_tls_modid].pointer.to_free = NULL;
+ dtv[map->l_tls_modid].pointer.val = dest;
+
+ /* Initialize the memory. */
memset (__mempcpy (dest, map->l_tls_initimage, map->l_tls_initimage_size),
'\0', map->l_tls_blocksize - map->l_tls_initimage_size);
}
This is unsafe because the caller in _dl_try_allocate_static_tls only makes
sure that the DTV of the current thread is up-to-date with respect to the
global generation counter. The TLS modid is not necessary current for other
threads at this point.
I don't know if DTV initialization at this point is actually needed.
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Subject: [Bug dynamic-link/20915] global-dynamic TLS broken on aarch64
Date: Fri, 02 Dec 2016 16:32:00 -0000
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Reverting the patch shown in the description causes elf/tst-tls-manydynamic to
pass.
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Subject: [Bug dynamic-link/20915] global-dynamic TLS broken on aarch64
Date: Fri, 02 Dec 2016 17:34:00 -0000
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Peter Robinson <pbrobinson at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pbrobinson at gmail dot com
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Subject: [Bug math/20916] New: pow handling of sNaN arguments
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Bug ID: 20916
Summary: pow handling of sNaN arguments
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Various pow function implementations mishandle sNaN arguments in various ways.
This includes returning sNaN instead of qNaN for sNaN arguments. For arguments
(1, sNaN) and (sNaN, 0), TS 18661-1 semantics are also that the result should
be qNaN, whereas with a qNaN argument there the result should be 1.
Some representative examples for double for x86_64 follow; the detailed
failures vary between implementations. This bug specifically excludes any
issues for float and double for 32-bit x86, given the problems with testing
sNaNs in those cases.
Failure: Test: pow (sNaN, 0)
Result:
is: 1.0000000000000000e+00 0x1.0000000000000p+0
should be: qNaN
Failure: Test: pow (sNaN, qNaN)
Result:
is: sNaN
should be: qNaN
Failure: Test: pow (0, sNaN)
Result:
is: sNaN
should be: qNaN
Failure: Test: pow (1, sNaN)
Result:
is: 1.0000000000000000e+00 0x1.0000000000000p+0
should be: qNaN
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To: glibc-bugs@sourceware.org
Subject: [Bug build/20918] New: Building with --enable-nss-crypt fails tst-linkall-static.
Date: Fri, 02 Dec 2016 20:38:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20918
Bug ID: 20918
Summary: Building with --enable-nss-crypt fails
tst-linkall-static.
Product: glibc
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
CC: carlos at redhat dot com
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When building with --enable-nss-crypt the tst-linkall-static test fails.
The tst-linkall-static test links all static archives together to verify that
statically linking them all will work.
When building with NSS crypto routines the libcrypt.a generated by glibc has a
dependency on the static NSS crypto library.
Therefore if your distribution does not provided the static NSS crypto routines
then you cannot link libcrypt.a against anything without providing your own
versions of the required crypto routines.
At a minimum we must disable linking libcrypt.a into tst-linkall-static if we
find at configure time that there is no static NSS crypt library.
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Subject: [Bug build/20918] Building with --enable-nss-crypt fails tst-linkall-static.
Date: Fri, 02 Dec 2016 20:43:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84aa75162cd5ba73caa76864496fadd2551a5caa
commit 84aa75162cd5ba73caa76864496fadd2551a5caa
Author: Carlos O'Donell <carlos@systemhalted.org>
Date: Fri Dec 2 15:39:09 2016 -0500
Bug 20918 - Building with --enable-nss-crypt fails tst-linkall-static
Some configurations may use NSS cryptographic routines but have no
static library for those routines. The following changes allow glibc to
be built and tested with --enable-nss-crypt, but without having a static
NSS library. At a high level the change does two things:
(1) Detect at configure time if static NSS crypto libraries are
available. Assumes libfreebl3.a (instead of the existing Fedora
libfreebl.a which is incomplete) which matches libfreebl3.so.
(2) If static NSS crypto libraries are _not_ available then adjust the
way in which we build tst-linkall-static. This includes excluding a
reference to crypt and not linking against libcrypt.a, all of which
will fail otherwise.
Testing assumptions:
* Static library is named libfreebl3.a (not libfreebl.a as is currently
provided in Fedora), matching libfreebl3.so shared link name.
Tested on x86_64 on Fedora with:
(a) --enable-nss-crypt, with no static NSS library support: PASS
(previous FAIL)
(b) --enable-nss-crypt, with faked static NSS library support: PASS
(unsupported)
* Requires changing elf/Makefile to include a stub
/lib64/libfreebl3.a for testing purposes.
(c) --disable-nss-crypt: PASS
(default)
No regressions on x86_64.
For details see:
https://www.sourceware.org/ml/libc-alpha/2016-11/msg00647.html
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 16 ++++++++++++++++
config.make.in | 1 +
configure | 29 +++++++++++++++++++++++++++++
configure.ac | 14 ++++++++++++++
elf/Makefile | 32 ++++++++++++++++++++++++++++++--
elf/tst-linkall-static.c | 2 ++
6 files changed, 92 insertions(+), 2 deletions(-)
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Subject: [Bug build/20918] Building with --enable-nss-crypt fails tst-linkall-static.
Date: Fri, 02 Dec 2016 20:44:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20918
Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Fixed for 2.25.
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20919] New: Bad pow (qNaN, 0) result with -lieee
Date: Fri, 02 Dec 2016 22:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20919
Bug ID: 20919
Summary: Bad pow (qNaN, 0) result with -lieee
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
The dbl-64 implementation of __ieee754_pow returns a NaN for pow (qNaN, 0) when
it should return 1. Normally this is covered up by the wrappers ending up
calling __kernel_standard which fixes up the result for this case, but for
-lieee the wrappers are bypassed and the bad result gets through as a return
value.
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Subject: [Bug math/20919] Bad pow (qNaN, 0) result with -lieee
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commit 72d839a42f4c4ed2e0a5202a0d9829c3debae20f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Dec 2 22:50:46 2016 +0000
Fix pow (qNaN, 0) result with -lieee (bug 20919), remove dead parts of
wrappers.
The dbl-64 implementation of __ieee754_pow returns a NaN for pow
(qNaN, 0) when it should return 1. Normally this is covered up by the
wrappers ending up calling __kernel_standard which fixes up the result
for this case, but for -lieee the wrappers are bypassed and the bad
result gets through as a return value.
Now, the wrappers fixing this are dealing with variant error handling
that wants a result of NaN for pow (qNaN, 0), and only ever call
__kernel_standard for this case if NaN resulted from __ieee754_pow.
This leads to a question of whether the dbl-64 code might be
deliberately returning NaN in order to use those code paths. However,
I can find no sign that this is deliberate. If it were deliberate one
would expect other implementations to do the same, and would expect
the return of NaN to be very old, but it appears it came in by
accident when the present e_pow.c implementation replaced an fdlibm
implementation in 2001. So it appears to be unintended that this path
through the pow wrapper could be used at all.
So this patch fixes the implementation to return 1 in this case as
expected. This is consistent with all the other implementations. The
relevant path through the wrappers is now unreachable, so is removed
(which is the main motivation of this patch: to avoid that path
becoming accidentally reachable when implementing TS 18661-1 semantics
that pow (sNaN, 0) should return qNaN with "invalid" raised). Another
path that would require __ieee754_pow (0, 0) to return 0 is also
unreachable (as all implementations return 1, in accordance with C99
semantics), so is removed as well.
Note: we don't have anything set up to test -lieee, which in any case
is obsolescent (at some point we should remove the ability for new
programs to access _LIB_VERSION or define matherr and have it called
by glibc). So testing will be implicit through sNaN tests added when
making sNaN inputs work correctly for pow functions.
Tested for x86_64 and x86.
[BZ #20919]
* sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Do not return
NaN first argument when raised to power 0.
* math/w_pow.c (__pow): Do not check for NaN or zero results from
raising to power zero.
* math/w_powf.c (__powf): Likewise.
* math/w_powl.c (__powl): Likewise.
* sysdeps/ieee754/k_standard.c (__kernel_standard): Do not handle
pow (0, 0) or pow (NaN, 0).
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++++++++++
math/w_pow.c | 24 +++++-------------------
math/w_powf.c | 24 +++++-------------------
math/w_powl.c | 24 +++++-------------------
sysdeps/ieee754/dbl-64/e_pow.c | 3 ++-
sysdeps/ieee754/k_standard.c | 30 ------------------------------
6 files changed, 29 insertions(+), 88 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20919] Bad pow (qNaN, 0) result with -lieee
Date: Fri, 02 Dec 2016 22:52:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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Target Milestone|--- |2.25
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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Subject: [Bug math/20916] pow handling of sNaN arguments
Date: Fri, 02 Dec 2016 23:22:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=90ab295a9e07fe4f6caaa9c19e03b3fba3f3e10d
commit 90ab295a9e07fe4f6caaa9c19e03b3fba3f3e10d
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Dec 2 23:21:15 2016 +0000
Fix sysdeps/ieee754 pow handling of sNaN arguments (bug 20916).
Various pow function implementations mishandle sNaN arguments in
various ways. This includes returning sNaN instead of qNaN for sNaN
arguments. For arguments (1, sNaN) and (sNaN, 0), TS 18661-1
semantics are also that the result should be qNaN, whereas with a qNaN
argument there the result should be 1, but for the dbl-64
implementation of pow there are issues with sNaN arguments beyond not
implementing the TS 18661-1 semantics in those special cases.
This patch makes the implementations in sysdeps/ieee754 follow the TS
18661-1 semantics consistently. Because x86 / x86_64 implementations
still need fixing, testcases are not included with this patch; they
will be included with the fix for the x86 / x86_64 versions.
Tested for x86_64, x86, mips64 and powerpc (with such testcases, which
pass in the mips64 and powerpc cases).
[BZ #20916]
* sysdeps/ieee754/dbl-64/e_pow.c (__ieee754_pow): Do not return 1
for arguments (sNaN, 0) or (1, sNaN). Do arithmetic on NaN
arguments to compute result.
* sysdeps/ieee754/flt-32/e_powf.c (__ieee754_powf): Do not return
1 for arguments (sNaN, 0) or (1, sNaN).
* sysdeps/ieee754/ldbl-128/e_powl.c (__ieee754_powl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_powl.c (__ieee754_powl): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++++
sysdeps/ieee754/dbl-64/e_pow.c | 10 +++++-----
sysdeps/ieee754/flt-32/e_powf.c | 4 ++--
sysdeps/ieee754/ldbl-128/e_powl.c | 5 +++--
sysdeps/ieee754/ldbl-128ibm/e_powl.c | 4 ++--
5 files changed, 21 insertions(+), 11 deletions(-)
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/20894] The strange behavior of the log function
Date: Mon, 05 Dec 2016 22:45:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
This is clearly an excess precision issue, i.e. the compiler stores copies of
the return value with different precisions and divides those
different-precision copies so possibly resulting in a value < 1, so not an
issue with log itself (we only generally try to avoid excess range in return
values, not excess precision, with excess precision avoided only for functions
that must be correctly rounding).
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>From glibc-bugs-return-35249-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 06 00:34:31 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20916] pow handling of sNaN arguments
Date: Tue, 06 Dec 2016 00:34:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a91fd168a0db38563528dab1a13180fda2a5040c
commit a91fd168a0db38563528dab1a13180fda2a5040c
Author: Joseph Myers <joseph@codesourcery.com>
Date: Tue Dec 6 00:33:19 2016 +0000
Fix x86_64/x86 powl handling of sNaN arguments (bug 20916).
The x86_64/x86 powl implementations mishandle sNaN arguments, both by
returning sNaN in some cases (instead of doing arithmetic on the
arguments to produce the result when NaN arguments result in NaN
results) and by treating sNaN the same as qNaN for arguments (1, sNaN)
and (sNaN, 0), contrary to TS 18661-1 which requires those cases to
return qNaN instead of 1.
This patch makes the x86_64/x86 powl implementations follow TS 18661-1
semantics for sNaN arguments; sNaN tests are also added for pow.
Given the problems with testing float and double sNaN arguments on
32-bit x86 (sNaN tests disabled because the compiler may convert
unnecessarily to a qNaN when passing arguments), no changes are made
to the powf and pow implementations there.
Tested for x86_64 and x86.
[BZ #20916]
* sysdeps/i386/fpu/e_powl.S (__ieee754_powl): Do not return 1 for
arguments (sNaN, 0) or (1, sNaN). Do arithmetic on NaN arguments
to compute result.
* sysdeps/x86_64/fpu/e_powl.S (__ieee754_powl): Likewise.
* math/libm-test.inc (pow_test_data): Add tests of sNaN arguments.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 9 +++++++
math/libm-test.inc | 54 ++++++++++++++++++++++++++++++++++++++++++-
sysdeps/i386/fpu/e_powl.S | 29 +++++++++++++++++++----
sysdeps/x86_64/fpu/e_powl.S | 27 ++++++++++++++++++---
4 files changed, 109 insertions(+), 10 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20916] pow handling of sNaN arguments
Date: Tue, 06 Dec 2016 00:35:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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From: "aoliva at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20915] global-dynamic TLS broken on aarch64
Date: Tue, 06 Dec 2016 08:54:00 -0000
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Alexandre Oliva <aoliva at sourceware dot org> changed:
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----------------------------------------------------------------------------
CC| |aoliva at sourceware dot org
--- Comment #2 from Alexandre Oliva <aoliva at sourceware dot org> ---
https://sourceware.org/ml/libc-alpha/2016-09/msg00512.html is where I realized
the patch brought back this problem and proposed the partial reversal with the
fix
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>From glibc-bugs-return-35252-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 06 09:13:01 2016
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From: "markus at selfnet dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20508] _dl_runtime_resolve_avx/_dl_runtime_profile_avx512 cause transition penalty
Date: Tue, 06 Dec 2016 09:13:00 -0000
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markus at selfnet dot de changed:
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----------------------------------------------------------------------------
CC| |markus at selfnet dot de
--- Comment #13 from markus at selfnet dot de ---
May I ask for a high priority to get this fixed in the stable versions?
With the dolphin emulator, we've seen an up to 80% slowdown on random
compilation settings and usages because of this issue:
https://forums.dolphin-emu.org/Thread-dolphin-uses-ffmpeg-to-play-show-the-videos-of-the-games
We use AVX128 and SSE in a mixed way in our just in time compiler, so we are
hit hard by this penalty. Especially as this thread run almost no C++ code. So
there was a good chance to never call VZEROUPPER at all. Debugging this
performance issue was a big pain.
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From: "catqueen2 at protonmail dot ch" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/20938] New: In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
Date: Tue, 06 Dec 2016 13:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20938
Bug ID: 20938
Summary: In variable-width charsets, _IO_wfile_sync passes a
negative buffer size to __codecvt_do_length on certain
inputs to fgetws resulting in SIGSEGV
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: stdio
Assignee: unassigned at sourceware dot org
Reporter: catqueen2 at protonmail dot ch
Target Milestone: ---
/*
See this Stack Overflow question: https://stackoverflow.com/questions/40975450
The following code demonstrates the problem:
*/
#include <locale.h>
#include <wchar.h>
#include <stdlib.h>
#include <stdio.h>
int main(const int argc, const char* const * const argv) {
(void) argc;
setlocale(LC_ALL, argv[1]);
const size_t len = (size_t) atoi(argv[2]);
wchar_t *buf = (wchar_t *) malloc(sizeof (wchar_t) * len),
*stat = fgetws(buf, (int) len, stdin);
wprintf(L"[%ls], [%ls]\n", stat, buf);
free(buf);
wprintf(L"we are still: %ls\n", L"alive");
return EXIT_SUCCESS;
}
/*
compile it like: `gcc -std=c11 main.c -o main` (-std=c++ >= 11 has the same
behaviour)
Then, try running it like: `./main C 3`, and give it 10 bytes of input. The
program works and ends normally, and Valgrind reports no memory errors.
On the other hand, if it is run with a variable-width (UTF) locale: `./main
en_US.utf8 3` and given 10 bytes of STDIN the program behaves normally, but
crashes on exiting main. Valgrind reports the following:
==2639== Invalid read of size 8
==2639== at 0x4EAF575: _IO_wfile_sync (wfileops.c:534)
==2639== by 0x4EB6DB1: _IO_default_setbuf (genops.c:523)
==2639== by 0x4EB2FC8: _IO_file_setbuf@@GLIBC_2.2.5 (fileops.c:459)
==2639== by 0x4EB79B5: _IO_unbuffer_all (genops.c:921)
==2639== by 0x4EB79B5: _IO_cleanup (genops.c:966)
==2639== by 0x4E73282: __run_exit_handlers (exit.c:96)
==2639== by 0x4E73339: exit (exit.c:105)
==2639== by 0x4E593F7: (below main) (libc-start.c:325)
==2639== Address 0x18 is not stack'd, malloc'd or (recently) free'd
The aforementioned Stack Overflow question and answer came to the conclusion
that:
Inside _IO_wfile_sync, fp->_wide_data->_IO_read_end points to the end of the
input string L"5555555555\n", while fp->_wide_data->_IO_read_ptr is at the
third character (after reading two), and the difference is -9.
__codecvt_do_length expects an argument _IO_size_t max for a buffer size and
receives (_IO_ssize_t) -9 which is turned into, presumably, 2^word_size - 9.
Among the first lines in this function is the declaration wchar_t to_buf[max];.
This results in *increasing* the stack pointer instead of decreasing it, and
data that should have been safely stored there (among them the pointer fp of
_IO_wfile_sync(), as it ends up stored in a register rbx) is overwritten at the
first opportunity.
After the return from the function, fp is overwritten with something that does
not make sense (NULL, in this case), even though it has never been exposed to
it, and dereferencing it on line 534 of wfileops.c causes a SIGSEGV, as the
backtrace tells us.
I don't know the exact build date as I have not built libc from source (I do
not know how to tell GCC to use a completely different libc).
The GLibC version is 2.24-3ubuntu1, but it does not seem this exists only in
Ubuntu repositories as it is here, too:
https://code.woboq.org/userspace/glibc/libio/wfileops.c.html#500
*/
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
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cat stevens <catqueen2 at protonmail dot ch> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |catqueen2 at protonmail dot ch
Host| |Ubuntu 16.10
Build| |Unknown
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>From glibc-bugs-return-35255-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 06 13:32:59 2016
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
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--- Comment #1 from cat stevens <catqueen2 at protonmail dot ch> ---
Reproduced on Fedora 24 with GLibC 2.23.
(https://stackoverflow.com/q/40975450/#comment69201316_40978967)
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
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--- Comment #2 from cat stevens <catqueen2 at protonmail dot ch> ---
Reproduced on Fedora 24 Linux with GLibC 2.23.
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>From glibc-bugs-return-35257-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 06 15:41:55 2016
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Subject: [Bug dynamic-link/20508] _dl_runtime_resolve_avx/_dl_runtime_profile_avx512 cause transition penalty
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--- Comment #14 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to markus from comment #13)
> May I ask for a high priority to get this fixed in the stable versions?
>
It has been backported to 2.24 branch.
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>From glibc-bugs-return-35258-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 06 22:48:44 2016
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Subject: [Bug math/20940] New: hypot sNaN handling
Date: Tue, 06 Dec 2016 22:48:00 -0000
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Bug ID: 20940
Summary: hypot sNaN handling
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Signaling NaN semantics mean that hypot functions, when one argument is an
infinity and the other is a signaling NaN, should return qNaN with "invalid"
raised, as specified in TS 18661-1, rather than returning +Inf as done for
arguments (Inf, qNaN). Various implementations in glibc do not follow those
semantics. E.g., for double on x86_64:
Failure: Test: hypot (inf, sNaN)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (inf, -sNaN)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (-inf, sNaN)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (-inf, -sNaN)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (sNaN, inf)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (-sNaN, inf)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (sNaN, -inf)
Result:
is: inf inf
should be: qNaN
Failure: Test: hypot (-sNaN, -inf)
Result:
is: inf inf
should be: qNaN
This bug excludes any issues with the float and double implementations for
32-bit x86, given the problems with testing sNaN for those types on that
architecture.
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Subject: [Bug math/20940] hypot sNaN handling
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=58307649fb51a3a6adc29a8659d3301393f24671
commit 58307649fb51a3a6adc29a8659d3301393f24671
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 7 01:16:36 2016 +0000
Fix hypot sNaN handling (bug 20940).
TS 18661-1 generally defines libm functions taking sNaN arguments to
return qNaN and raise "invalid", even for the cases where a
corresponding qNaN argument would not result in a qNaN return. This
includes hypot with one argument being an infinity and the other being
an sNaN. This patch duly fixes hypot implementatations in glibc
(generic and powerpc) to ensure qNaN, computed by arithmetic on the
arguments, is returned in that case.
Various implementations do their checks for infinities and NaNs inline
by manipulating the representations of the arguments. For simplicity,
this patch just uses issignaling to check for sNaN arguments. This
could be inlined like the existing code (with due care about reversed
quiet NaN conventions, for implementations where that is relevant),
but given that all these checks are in cases where it's already known
at least one argument is not finite, which should be the uncommon
case, that doesn't seem worthwhile unless performance issues are
observed in practice.
Tested for x86_64, x86, mips64 and powerpc.
[BZ #20940]
* sysdeps/ieee754/dbl-64/e_hypot.c (__ieee754_hypot): Do not
return Inf for arguments Inf and sNaN.
* sysdeps/ieee754/flt-32/e_hypotf.c (__ieee754_hypotf): Likewise.
* sysdeps/ieee754/ldbl-128/e_hypotl.c (__ieee754_hypotl):
Likewise.
* sysdeps/ieee754/ldbl-128ibm/e_hypotl.c (__ieee754_hypotl):
Likewise.
* sysdeps/ieee754/ldbl-96/e_hypotl.c (__ieee754_hypotl): Likewise.
* sysdeps/powerpc/fpu/e_hypot.c (TEST_INF_NAN): Do not return Inf
for arguments Inf and sNaN. When returning a NaN, compute it by
arithmetic on the arguments.
* sysdeps/powerpc/fpu/e_hypotf.c (TEST_INF_NAN): Likewise.
* math/libm-test.inc (pow_test_data): Add tests of sNaN arguments.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 17 ++++++++++
math/libm-test.inc | 52 ++++++++++++++++++++++++++++++++
sysdeps/ieee754/dbl-64/e_hypot.c | 2 +
sysdeps/ieee754/flt-32/e_hypotf.c | 4 +-
sysdeps/ieee754/ldbl-128/e_hypotl.c | 2 +
sysdeps/ieee754/ldbl-128ibm/e_hypotl.c | 2 +
sysdeps/ieee754/ldbl-96/e_hypotl.c | 2 +
sysdeps/powerpc/fpu/e_hypot.c | 10 ++++--
sysdeps/powerpc/fpu/e_hypotf.c | 10 ++++--
9 files changed, 91 insertions(+), 10 deletions(-)
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Subject: [Bug math/20940] hypot sNaN handling
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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>From glibc-bugs-return-35261-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 07 11:03:48 2016
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Subject: [Bug network/13500] __cmsg_nxthdr in cmsg_nxthdr.c (CMSG_NXTHDR) has undefined behavior when setting up ancillary data
Date: Wed, 07 Dec 2016 11:03:00 -0000
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phperl <250716887 at qq dot com> changed:
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--- Comment #4 from phperl <250716887 at qq dot com> ---
use NEED_A_WORKAROUND_FOR_BUG_13500 to zero buf, will make length check
useless, even to introduce security bugs.
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>From glibc-bugs-return-35262-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 07 11:12:12 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug network/13500] __cmsg_nxthdr in cmsg_nxthdr.c (CMSG_NXTHDR) has undefined behavior when setting up ancillary data
Date: Wed, 07 Dec 2016 11:12:00 -0000
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to phperl from comment #4)
> use NEED_A_WORKAROUND_FOR_BUG_13500 to zero buf, will make length check
> useless, even to introduce security bugs.
Sorry, I don't understand this comment.
The length check is *always* useless for constructing ancillary data lists, but
it is not useless for *reading* them.
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Subject: [Bug libc/20847] tst-vfork3 failure
Date: Wed, 07 Dec 2016 12:07:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8047e7cf7152a356510f51c18c5a198865470af2
commit 8047e7cf7152a356510f51c18c5a198865470af2
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Nov 22 16:23:28 2016 -0200
Fix writes past the allocated array bounds in execvpe (BZ#20847)
Commit 6c9e1be87a37bf wrongly fixes BZ#20847 by lefting the else branch
on maybe_script_execute to still being able to invalid write on stack
allocated buffer. It happens if execvp{e} is executed with an empty
arguments list ({ NULL }) and although manual states first argument
should be the script name itself, by convention, old and current
implementation allows it.
This patch fixes the issue by just account for arguments and not the
final 'NULL' (since the 'argv + 1' will indeed ignored the script name).
The empty argument list is handled in a special case with a minimum
allocated size. The patch also adds extra tests for such case in
tst-vfork3.
Tested on x86_64.
[BZ #20847]
* posix/execvpe.c (maybe_script_execute): Remove write past allocated
array bounds for else branch.
(__execvpe): Style fixes.
* posix/tst-vfork3.c (run_script): New function.
(create_script): Likewise.
(do_test): Use run_script internal function.
(do_prepare): Use create_script internal function.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 12 ++++
posix/execvpe.c | 19 ++++--
posix/tst-vfork3.c | 188 +++++++++++++++++++--------------------------------
3 files changed, 94 insertions(+), 125 deletions(-)
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #10 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
It should be fixed by 8047e7cf7152a356510f51c18c5a198865470af2 now.
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>From glibc-bugs-return-35265-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 07 14:10:05 2016
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20944] New: dynamic linker broken on trunk
Date: Wed, 07 Dec 2016 14:10:00 -0000
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Bug ID: 20944
Summary: dynamic linker broken on trunk
Product: glibc
Version: 2.26
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: markus at trippelsdorf dot de
Target Milestone: ---
The dynamic linker is broken on trunk:
markus@x4 elf % ./ld.so =cat
/bin/cat: error while loading shared libraries: __vdso_time: invalid mode for
dlopen(): Invalid argument
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>From glibc-bugs-return-35266-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 07 14:34:40 2016
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Subject: [Bug dynamic-link/20944] dynamic linker broken on trunk
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Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
--- Comment #1 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
Started with:
commit 9e78f6f6e7134a5f299cc8de77370218f8019237
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Nov 30 15:59:57 2016 +0100
Implement _dl_catch_error, _dl_signal_error in libc.so [BZ #16628]
Please note that "make check" succeeds even with the broken commit.
I think this is unacceptable.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20944] dynamic linker broken on trunk
Date: Wed, 07 Dec 2016 14:44:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Markus Trippelsdorf from comment #0)
> The dynamic linker is broken on trunk:
>
> markus@x4 elf % ./ld.so =cat
> /bin/cat: error while loading shared libraries: __vdso_time: invalid mode
> for dlopen(): Invalid argument
My shell does not treat the =cat syntax in a special way. What does it do?
If you are trying to run a non-installed dynamic linker against the system
libc.so.6 file, this has never been supported.
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https://sourceware.org/bugzilla/show_bug.cgi?id=20944
Markus Trippelsdorf <markus at trippelsdorf dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Markus Trippelsdorf <markus at trippelsdorf dot de> ---
(In reply to Florian Weimer from comment #2)
> (In reply to Markus Trippelsdorf from comment #0)
> > The dynamic linker is broken on trunk:
> >
> > markus@x4 elf % ./ld.so =cat
> > /bin/cat: error while loading shared libraries: __vdso_time: invalid mode
> > for dlopen(): Invalid argument
>
> My shell does not treat the =cat syntax in a special way. What does it do?
>
> If you are trying to run a non-installed dynamic linker against the system
> libc.so.6 file, this has never been supported.
Sorry, it turned out to be an installation issue.
I normally just install glibc directly:
LC_ALL=C sudo make install
But this obviously doesn't work with commit 9e78f6f6e713,
because ld-2.24.90.so gets installed first and after that all "install"
commands
fail with the error above. So the new libc-2.24.90.so never gets installed.
That leaves you with a broken system.
It works fine if I use "make DESTDIR..." and then copy the files later on.
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/20947] New: fmax, fmin sNaN handling
Date: Wed, 07 Dec 2016 18:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20947
Bug ID: 20947
Summary: fmax, fmin sNaN handling
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
Target Milestone: ---
Various fmax and fmin function implementations mishandle sNaN arguments:
(a) When both arguments are NaNs, the return value should be a qNaN, but
sometimes it is an sNaN if at least one argument is an sNaN.
(b) Under TS 18661-1 semantics, if either argument is an sNaN then the result
should be a qNaN (whereas if one argument is a qNaN and the other is not a NaN,
the result should be the non-NaN argument). Various implementations treat
sNaNs like qNaNs here.
This bug report excludes any issues for 32-bit x86 float and double, given the
issues with testing sNaNs in that case.
E.g., for double on x86_64, failures include (among many others):
Failure: Test: fmax (0, sNaN)
Result:
is: 0.0000000000000000e+00 0x0.0000000000000p+0
should be: qNaN
Failure: Test: fmax (sNaN, sNaN)
Result:
is: sNaN
should be: qNaN
Failure: Test: fmin (0, sNaN)
Result:
is: 0.0000000000000000e+00 0x0.0000000000000p+0
should be: qNaN
Failure: Test: fmin (sNaN, 9)
Result:
is: 9.0000000000000000e+00 0x1.2000000000000p+3
should be: qNaN
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>From glibc-bugs-return-35270-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 07 21:48:22 2016
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
Date: Wed, 07 Dec 2016 21:48:00 -0000
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--- Comment #3 from cat stevens <catqueen2 at protonmail dot ch> ---
Created attachment 9693
--> https://sourceware.org/bugzilla/attachment.cgi?id=9693&action=edit
Fix wfileops.c to never use a negative delta (swap the pointer subtraction and
always use ssize_t)
I figured out how to run my test program under a different libc, so I cloned
glibc 2.24 and made the changes specified in the patch. I annotated it with a
comment, but the important part is that the end pointer will always be greater
than the 'ptr' which points to the beginning of the string.
I'm not sure why a variable called 'delta' has a signed type (since difference
is usually absolute) but __codecvt_do_length takes a 'size_t' as its last
argument, not a 'ssize_t'. Since the subtraction of these pointers should
always result in an unsigned number, it should be okay to store it in a
'size_t'.
The output of the program in my initial comment was:
$ ~/projects/c/misc/fgetws/f en_US.utf8 3
dddddddddddddddddddddddddddddddddd
[dd], [dd]
still works: yes
Segmentation fault (core dumped)
A segfault after main.
Now, it runs like this:
$ ./testrun.sh ~/projects/c/misc/fgetws/f en_US.utf8 3
dddddddddddddddddddddddddddddddddd
[dd], [dd]
still works: yes
No segfault, hooray!
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
Date: Wed, 07 Dec 2016 21:50:00 -0000
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--- Comment #4 from cat stevens <catqueen2 at protonmail dot ch> ---
Comment on attachment 9693
--> https://sourceware.org/bugzilla/attachment.cgi?id=9693
Fix wfileops.c to never use a negative delta (swap the pointer subtraction and
always use ssize_t)
>diff --git a/libio/wfileops.c b/libio/wfileops.c
>index d88d08a..5b68100 100644
>--- a/libio/wfileops.c
>+++ b/libio/wfileops.c
>@@ -498,14 +498,15 @@ libc_hidden_def (_IO_wfile_overflow)
> wint_t
> _IO_wfile_sync (_IO_FILE *fp)
> {
>- _IO_ssize_t delta;
>+ _IO_size_t delta;
> wint_t retval = 0;
>
> /* char* ptr = cur_ptr(); */
> if (fp->_wide_data->_IO_write_ptr > fp->_wide_data->_IO_write_base)
> if (_IO_do_flush (fp))
> return WEOF;
>- delta = fp->_wide_data->_IO_read_ptr - fp->_wide_data->_IO_read_end;
>+ /* subtract read_ptr from read_end because read_end will always be greater */
>+ delta = fp->_wide_data->_IO_read_end - fp->_wide_data->_IO_read_ptr;
> if (delta != 0)
> {
> /* We have to find out how many bytes we have to go back in the
>@@ -530,7 +531,8 @@ _IO_wfile_sync (_IO_FILE *fp)
> fp->_wide_data->_IO_state = fp->_wide_data->_IO_last_state;
> nread = (*cv->__codecvt_do_length) (cv, &fp->_wide_data->_IO_state,
> fp->_IO_read_base,
>- fp->_IO_read_end, delta);
>+ fp->_IO_read_end,
>+ delta);
> fp->_IO_read_ptr = fp->_IO_read_base + nread;
> delta = -(fp->_IO_read_end - fp->_IO_read_base - nread);
> }
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Subject: [Bug nptl/19402] Deadlock with robust shared mutex and asynchronous termination
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Florian Weimer <fweimer at redhat dot com> changed:
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Subject: [Bug dynamic-link/20944] dynamic linker broken on trunk
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Carlos O'Donell <carlos at redhat dot com> changed:
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--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Markus Trippelsdorf from comment #3)
> It works fine if I use "make DESTDIR..." and then copy the files later on.
For the record, and for anyone else reading this bug, the issue is covered in
detail in the project FAQ:
https://sourceware.org/glibc/wiki/FAQ#How_do_I_install_all_of_the_GNU_C_Library_project_libraries_that_I_just_built.3F
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Subject: [Bug math/20539] GCC 7 -static -lm fails to link at -O3
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via cbd8f9302c9a04bf4fe72a3a1a641faf07614552 (commit)
from 23b5cae1af04f2d912910fdaf73cb482265798c1 (commit)
Those revisions listed above that are new to this repository have
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revisions in full, below.
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cbd8f9302c9a04bf4fe72a3a1a641faf07614552
commit cbd8f9302c9a04bf4fe72a3a1a641faf07614552
Author: Andrew Senkevich <andrew.senkevich@intel.com>
Date: Thu Dec 8 17:25:59 2016 +0300
Install libm.a as linker script (bug 20539).
Install libm.a as linker script to avoid static link fail w/o passing
additional -lmvec option while building with GCC >= 6.1.
[BZ #20539]
* math/Makefile (install-lib-ldscripts): Add libm.a.
(install_subdir): Remove.
(install-others): Add.
($(inst_libdir)/libm.a): Add rule for installation as
linker script.
* Makerules (install-lib.a): Filter out install-lib-ldscripts.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 10 ++++++++++
Makerules | 1 +
math/Makefile | 19 +++++++++++++++----
3 files changed, 26 insertions(+), 4 deletions(-)
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Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
Fixed with cbd8f9302c9a04bf4fe72a3a1a641faf07614552
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From: "Ulrich.Windl at rz dot uni-regensburg.de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug librt/20950] New: Do asynchronous execution for lio_listio's IOs
Date: Thu, 08 Dec 2016 16:23:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20950
Bug ID: 20950
Summary: Do asynchronous execution for lio_listio's IOs
Product: glibc
Version: 2.11
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: librt
Assignee: unassigned at sourceware dot org
Reporter: Ulrich.Windl at rz dot uni-regensburg.de
Target Milestone: ---
strace suggests that glibc 2.11.3 on Linux x86_64 (SLES11 SP4) lio_listio()
does read() IOs (LIO_READ) using pread() in one(!) subprocess or thread.
However all IO operations seem to be executed sequentially in the order listed
in aiocb_list[]. When the last operation completed, lio_listio returns (the
subprocess exits).
That's OK for the POSIX semantics, but it's rather useless from a performance
point of view as the operations in aiocb_list[] are expected to be executed as
asynchronous IO. When executing them sequentially, there's no benefit from
using lio_listio().
Please make the elements of aiocb_list[] be asynchronous IOs!
Example strace (10 IOs with 512 bytes block sequential each, reduced to
relevant parts):
[pid 7426] open("/boot/vmlinux-4.4.27-2-default.gz", O_RDONLY) = 3
[pid 7426] fstat(3, {st_mode=S_IFREG|0644, st_size=6864663, ...}) = 0
[pid 7426] brk(0) = 0x19cb000
[pid 7426] brk(0x19ed000) = 0x19ed000
[pid 7426] sched_getparam(7426, { 0 }) = 0
[pid 7426] sched_getscheduler(7426) = 0 (SCHED_OTHER)
[pid 7426] rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
[pid 7426] mmap(NULL, 28672, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x2b4c48eec000
[pid 7426] mprotect(0x2b4c48eec000, 4096, PROT_NONE) = 0
[pid 7426] clone(Process 7427 attached
<unfinished ...>
[pid 7427] set_robust_list(0x2b4c48ef29e0, 24 <unfinished ...>
[pid 7426] <... clone resumed> child_stack=0x2b4c48ef1ff0,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
parent_tidptr=0x2b4c48ef29d0, tls=0x2b4c48ef2700, child_tidptr=0x2b4c48ef29d0)
= 7427
[pid 7427] <... set_robust_list resumed> ) = 0
[pid 7426] rt_sigprocmask(SIG_SETMASK, [], <unfinished ...>
[pid 7427] pread(3, <unfinished ...>
[pid 7426] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid 7427] <... pread resumed>
"\37\213\10\10\262\36\35X\2\3vmlinux-4.4.27-2-defau"..., 512, 0) = 512
[pid 7427] getuid() = 1000
[pid 7427] rt_sigqueueinfo(7426, SIG_0, {}) = 0
[pid 7427] pread(3,
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 512,
512) = 512
[pid 7427] getuid() = 1000
[pid 7427] rt_sigqueueinfo(7426, SIG_0, {}) = 0
[pid 7427] pread(3,
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 512,
1024) = 512
[pid 7427] getuid() = 1000
[pid 7427] rt_sigqueueinfo(7426, SIG_0, {}) = 0
[pid 7427] pread(3,
"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 512,
1536) = 512
[...]
[pid 7427] getuid() = 1000
[pid 7427] rt_sigqueueinfo(7426, SIG_0, {}) = 0
[pid 7427] pread(3,
"G\311\232r\376s\35\263\257\237\273\336\371\205y~\340=Y\326\244\334`\315\223f\324\315\364\200[\27"...,
512, 4608) = 512
[pid 7427] getuid() = 1000
[pid 7427] rt_sigqueueinfo(7426, SIG_0, {}) = 0
[pid 7427] futex(0x2b4c492f3284,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, {1481213800, 867373000},
ffffffff <unfinished ...>
[pid 7426] close(3) = 0
(actually this doesn't seem to have changed up to glibc-2.22-3)
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Subject: [Bug libc/20847] tst-vfork3 failure
Date: Thu, 08 Dec 2016 19:27:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b73ec923c79ab493a9265930a45800391329571a
commit b73ec923c79ab493a9265930a45800391329571a
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix trunc for big input values
The alpha specific version of trunc and truncf always add and subtract
0x1.0p23 or 0x1.0p52 even for big values. This causes this kind of
errors in the testsuite:
Failure: Test: trunc_towardzero (0x1p107)
Result:
is: 1.6225927682921334e+32 0x1.fffffffffffffp+106
should be: 1.6225927682921336e+32 0x1.0000000000000p+107
difference: 1.8014398509481984e+16 0x1.0000000000000p+54
ulp : 0.5000
max.ulp : 0.0000
Change this by returning the input value when its absolute value is
greater than 0x1.0p23 or 0x1.0p52. NaN have to go through the add and
subtract operations to get possibly silenced.
Finally remove the code to handle inexact exception, trunc should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_trunc.c (__trunc): Return the input value
when its absolute value is greater than 0x1.0p52.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_truncf.c (__truncf): Return the input value
when its absolute value is greater than 0x1.0p23.
[_IEEE_FP_INEXACT] Remove.
(cherry picked from commit b74d259fe793499134eb743222cd8dd7c74a31ce)
(cherry picked from commit e6eab16cc302e6c42f79e1af02ce98ebb9a783bc)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=04c5f782796052de9d06975061eb3376ccbcbdb1
commit 04c5f782796052de9d06975061eb3376ccbcbdb1
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix rint on sNaN input
The alpha version of rint wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Changelog:
* sysdeps/alpha/fpu/s_rint.c (__rint): Add argument with itself
when it is a NaN.
* sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise.
(cherry picked from commit cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b)
(cherry picked from commit 8eb9a92e0522f2d4f2d4167df919d066c85d3408)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9b34c1494d8e61bb3d718e2ea83b856030476737
commit 9b34c1494d8e61bb3d718e2ea83b856030476737
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix floor on sNaN input
The alpha version of floor wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Finally remove the code to handle inexact exception, floor should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_floor.c (__floor): Add argument with itself
when it is a NaN.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_floorf.c (__floorf): Likewise.
(cherry picked from commit 65cc568cf57156e5230db9a061645e54ff028a41)
(cherry picked from commit 1912cc082df4739c2388c375f8d486afdaa7d49b)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2afb8a945ddc104c5ef9aa61f32427c19b681232
commit 2afb8a945ddc104c5ef9aa61f32427c19b681232
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix ceil on sNaN input
The alpha version of ceil wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Finally remove the code to handle inexact exception, ceil should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_ceil.c (__ceil): Add argument with itself
when it is a NaN.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_ceilf.c (__ceilf): Likewise.
(cherry picked from commit 062e53c195b4a87754632c7d51254867247698b4)
(cherry picked from commit 3eff6f84311d2679a58a637e3be78b4ced275762)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=df13b9c22a0fb690a0ab9dd4af163ae3c459d975
commit df13b9c22a0fb690a0ab9dd4af163ae3c459d975
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b4391b0c7def246a4503db1af683122681c12a56
commit b4391b0c7def246a4503db1af683122681c12a56
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
(cherry picked from commit 4b8790c81c1a7b870a43810ec95e08a2e501123d)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d5f4a32a34f048b35360a110a0e6d1c87e3eced
commit 0d5f4a32a34f048b35360a110a0e6d1c87e3eced
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Thu Nov 24 12:10:13 2016 +0100
x86_64: fix static build of __memcpy_chk for compilers defaulting to
PIC/PIE
When glibc is compiled with gcc 6.2 that has been configured with
to default to PIC/PIE, the static version of __memcpy_chk is not built,
as the test is done on PIC instead of SHARED. Fix the test to check for
SHARED, like it is done for similar functions like memmove_chk.
Changelog:
* sysdeps/x86_64/memcpy_chk.S (__memcpy_chk): Check for SHARED
instead of PIC.
(cherry picked from commit 380ec16d62f459d5a28cfc25b7b20990c45e1cc9)
(cherry picked from commit 2d16e81babd1d7b66d10cec0bc6d6d86a7e0c95e)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0ab02a62e42e63b058e7a4e160dbe51762ef2c46
commit 0ab02a62e42e63b058e7a4e160dbe51762ef2c46
Author: Maciej W. Rozycki <macro@imgtec.com>
Date: Thu Nov 17 19:15:51 2016 +0000
MIPS: Add `.insn' to ensure a text label is defined as code not data
Avoid a build error with microMIPS compilation and recent versions of
GAS which complain if a branch targets a label which is marked as data
rather than microMIPS code:
../sysdeps/mips/mips32/crti.S: Assembler messages:
../sysdeps/mips/mips32/crti.S:72: Error: branch to a symbol in another ISA
mode
make[2]: *** [.../csu/crti.o] Error 1
as commit 9d862524f6ae ("MIPS: Verify the ISA mode and alignment of
branch and jump targets") closed a hole in branch processing, making
relocation calculation respect the ISA mode of the symbol referred.
This allowed diagnosing the situation where an attempt is made to pass
control from code assembled for one ISA mode to code assembled for a
different ISA mode and either relaxing the branch to a cross-mode jump
or if that is not possible, then reporting this as an error rather than
letting such code build and then fail unpredictably at the run time.
This however requires the correct annotation of branch targets as code,
because the ISA mode is not relevant for data symbols and is therefore
not recorded for them. The `.insn' pseudo-op is used for this purpose
and has been supported by GAS since:
Wed Feb 12 14:36:29 1997 Ian Lance Taylor <ian@cygnus.com>
* config/tc-mips.c (mips_pseudo_table): Add "insn".
(s_insn): New static function.
* doc/c-mips.texi: Document .insn.
so there has been no reason to avoid it where required. More recently
this pseudo-op has been documented, by the microMIPS architecture
specification[1][2], as required for the correct interpretation of any
code label which is not followed by an actual instruction in an assembly
source.
Use it in our crti.S files then, to mark that the trailing label there
with no instructions following is indeed not a code bug and the branch
is legitimate.
References:
[1] "MIPS Architecture for Programmers, Volume II-B: The microMIPS32
Instruction Set", MIPS Technologies, Inc., Document Number: MD00582,
Revision 5.04, January 15, 2014, Section 7.1 "Assembly-Level
Compatibility", p. 533
[2] "MIPS Architecture for Programmers, Volume II-B: The microMIPS64
Instruction Set", MIPS Technologies, Inc., Document Number: MD00594,
Revision 5.04, January 15, 2014, Section 8.1 "Assembly-Level
Compatibility", p. 623
2016-11-23 Matthew Fortune <Matthew.Fortune@imgtec.com>
Maciej W. Rozycki <macro@imgtec.com>
* sysdeps/mips/mips32/crti.S (_init): Add `.insn' pseudo-op at
`.Lno_weak_fn' label.
* sysdeps/mips/mips64/n32/crti.S (_init): Likewise.
* sysdeps/mips/mips64/n64/crti.S (_init): Likewise.
(cherry picked from commit cfaf1949ff1f8336b54c43796d0e2531bc8a40a2)
(cherry picked from commit 65a2b63756a4d622b938910d582d8b807c471c9a)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=901db98f36690e4743feefd985c6ba2d7fd19813
commit 901db98f36690e4743feefd985c6ba2d7fd19813
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Nov 21 11:06:15 2016 -0200
Fix writes past the allocated array bounds in execvpe (BZ#20847)
This patch fixes an invalid write out or stack allocated buffer in
2 places at execvpe implementation:
1. On 'maybe_script_execute' function where it allocates the new
argument list and it does not account that a minimum of argc
plus 3 elements (default shell path, script name, arguments,
and ending null pointer) should be considered. The straightforward
fix is just to take account of the correct list size on argument
copy.
2. On '__execvpe' where the executable file name lenght may not
account for ending '\0' and thus subsequent path creation may
write past array bounds because it requires to add the terminating
null. The fix is to change how to calculate the executable name
size to add the final '\0' and adjust the rest of the code
accordingly.
As described in GCC bug report 78433 [1], these issues were masked off by
GCC because it allocated several bytes more than necessary so that many
off-by-one bugs went unnoticed.
Checked on x86_64 with a latest GCC (7.0.0 20161121) with -O3 on CFLAGS.
[BZ #20847]
* posix/execvpe.c (maybe_script_execute): Remove write past allocated
array bounds.
(__execvpe): Likewise.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78433
(cherry picked from commit d174436712e3cabce70d6cd771f177b6fe0e097b)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 25 ++++++++++
posix/execvpe.c | 15 ++++--
sysdeps/alpha/fpu/s_ceil.c | 7 +--
sysdeps/alpha/fpu/s_ceilf.c | 7 +--
sysdeps/alpha/fpu/s_floor.c | 7 +--
sysdeps/alpha/fpu/s_floorf.c | 7 +--
sysdeps/alpha/fpu/s_rint.c | 3 +
sysdeps/alpha/fpu/s_rintf.c | 3 +
sysdeps/alpha/fpu/s_trunc.c | 7 +--
sysdeps/alpha/fpu/s_truncf.c | 7 +--
sysdeps/mips/mips32/crti.S | 1 +
sysdeps/mips/mips64/n32/crti.S | 1 +
sysdeps/mips/mips64/n64/crti.S | 1 +
sysdeps/x86/cpu-features.c | 14 +++++
sysdeps/x86/cpu-features.h | 6 ++
sysdeps/x86_64/dl-machine.h | 24 ++++++++-
sysdeps/x86_64/dl-trampoline.S | 20 ++++++++
sysdeps/x86_64/dl-trampoline.h | 104 +++++++++++++++++++++++++++++++++++++++-
sysdeps/x86_64/memcpy_chk.S | 2 +-
19 files changed, 228 insertions(+), 33 deletions(-)
--
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Subject: [Bug dynamic-link/20508] _dl_runtime_resolve_avx/_dl_runtime_profile_avx512 cause transition penalty
Date: Thu, 08 Dec 2016 19:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20508
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b73ec923c79ab493a9265930a45800391329571a
commit b73ec923c79ab493a9265930a45800391329571a
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix trunc for big input values
The alpha specific version of trunc and truncf always add and subtract
0x1.0p23 or 0x1.0p52 even for big values. This causes this kind of
errors in the testsuite:
Failure: Test: trunc_towardzero (0x1p107)
Result:
is: 1.6225927682921334e+32 0x1.fffffffffffffp+106
should be: 1.6225927682921336e+32 0x1.0000000000000p+107
difference: 1.8014398509481984e+16 0x1.0000000000000p+54
ulp : 0.5000
max.ulp : 0.0000
Change this by returning the input value when its absolute value is
greater than 0x1.0p23 or 0x1.0p52. NaN have to go through the add and
subtract operations to get possibly silenced.
Finally remove the code to handle inexact exception, trunc should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_trunc.c (__trunc): Return the input value
when its absolute value is greater than 0x1.0p52.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_truncf.c (__truncf): Return the input value
when its absolute value is greater than 0x1.0p23.
[_IEEE_FP_INEXACT] Remove.
(cherry picked from commit b74d259fe793499134eb743222cd8dd7c74a31ce)
(cherry picked from commit e6eab16cc302e6c42f79e1af02ce98ebb9a783bc)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=04c5f782796052de9d06975061eb3376ccbcbdb1
commit 04c5f782796052de9d06975061eb3376ccbcbdb1
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix rint on sNaN input
The alpha version of rint wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Changelog:
* sysdeps/alpha/fpu/s_rint.c (__rint): Add argument with itself
when it is a NaN.
* sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise.
(cherry picked from commit cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b)
(cherry picked from commit 8eb9a92e0522f2d4f2d4167df919d066c85d3408)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9b34c1494d8e61bb3d718e2ea83b856030476737
commit 9b34c1494d8e61bb3d718e2ea83b856030476737
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix floor on sNaN input
The alpha version of floor wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Finally remove the code to handle inexact exception, floor should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_floor.c (__floor): Add argument with itself
when it is a NaN.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_floorf.c (__floorf): Likewise.
(cherry picked from commit 65cc568cf57156e5230db9a061645e54ff028a41)
(cherry picked from commit 1912cc082df4739c2388c375f8d486afdaa7d49b)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2afb8a945ddc104c5ef9aa61f32427c19b681232
commit 2afb8a945ddc104c5ef9aa61f32427c19b681232
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix ceil on sNaN input
The alpha version of ceil wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Finally remove the code to handle inexact exception, ceil should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_ceil.c (__ceil): Add argument with itself
when it is a NaN.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_ceilf.c (__ceilf): Likewise.
(cherry picked from commit 062e53c195b4a87754632c7d51254867247698b4)
(cherry picked from commit 3eff6f84311d2679a58a637e3be78b4ced275762)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=df13b9c22a0fb690a0ab9dd4af163ae3c459d975
commit df13b9c22a0fb690a0ab9dd4af163ae3c459d975
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b4391b0c7def246a4503db1af683122681c12a56
commit b4391b0c7def246a4503db1af683122681c12a56
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
(cherry picked from commit 4b8790c81c1a7b870a43810ec95e08a2e501123d)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d5f4a32a34f048b35360a110a0e6d1c87e3eced
commit 0d5f4a32a34f048b35360a110a0e6d1c87e3eced
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Thu Nov 24 12:10:13 2016 +0100
x86_64: fix static build of __memcpy_chk for compilers defaulting to
PIC/PIE
When glibc is compiled with gcc 6.2 that has been configured with
to default to PIC/PIE, the static version of __memcpy_chk is not built,
as the test is done on PIC instead of SHARED. Fix the test to check for
SHARED, like it is done for similar functions like memmove_chk.
Changelog:
* sysdeps/x86_64/memcpy_chk.S (__memcpy_chk): Check for SHARED
instead of PIC.
(cherry picked from commit 380ec16d62f459d5a28cfc25b7b20990c45e1cc9)
(cherry picked from commit 2d16e81babd1d7b66d10cec0bc6d6d86a7e0c95e)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0ab02a62e42e63b058e7a4e160dbe51762ef2c46
commit 0ab02a62e42e63b058e7a4e160dbe51762ef2c46
Author: Maciej W. Rozycki <macro@imgtec.com>
Date: Thu Nov 17 19:15:51 2016 +0000
MIPS: Add `.insn' to ensure a text label is defined as code not data
Avoid a build error with microMIPS compilation and recent versions of
GAS which complain if a branch targets a label which is marked as data
rather than microMIPS code:
../sysdeps/mips/mips32/crti.S: Assembler messages:
../sysdeps/mips/mips32/crti.S:72: Error: branch to a symbol in another ISA
mode
make[2]: *** [.../csu/crti.o] Error 1
as commit 9d862524f6ae ("MIPS: Verify the ISA mode and alignment of
branch and jump targets") closed a hole in branch processing, making
relocation calculation respect the ISA mode of the symbol referred.
This allowed diagnosing the situation where an attempt is made to pass
control from code assembled for one ISA mode to code assembled for a
different ISA mode and either relaxing the branch to a cross-mode jump
or if that is not possible, then reporting this as an error rather than
letting such code build and then fail unpredictably at the run time.
This however requires the correct annotation of branch targets as code,
because the ISA mode is not relevant for data symbols and is therefore
not recorded for them. The `.insn' pseudo-op is used for this purpose
and has been supported by GAS since:
Wed Feb 12 14:36:29 1997 Ian Lance Taylor <ian@cygnus.com>
* config/tc-mips.c (mips_pseudo_table): Add "insn".
(s_insn): New static function.
* doc/c-mips.texi: Document .insn.
so there has been no reason to avoid it where required. More recently
this pseudo-op has been documented, by the microMIPS architecture
specification[1][2], as required for the correct interpretation of any
code label which is not followed by an actual instruction in an assembly
source.
Use it in our crti.S files then, to mark that the trailing label there
with no instructions following is indeed not a code bug and the branch
is legitimate.
References:
[1] "MIPS Architecture for Programmers, Volume II-B: The microMIPS32
Instruction Set", MIPS Technologies, Inc., Document Number: MD00582,
Revision 5.04, January 15, 2014, Section 7.1 "Assembly-Level
Compatibility", p. 533
[2] "MIPS Architecture for Programmers, Volume II-B: The microMIPS64
Instruction Set", MIPS Technologies, Inc., Document Number: MD00594,
Revision 5.04, January 15, 2014, Section 8.1 "Assembly-Level
Compatibility", p. 623
2016-11-23 Matthew Fortune <Matthew.Fortune@imgtec.com>
Maciej W. Rozycki <macro@imgtec.com>
* sysdeps/mips/mips32/crti.S (_init): Add `.insn' pseudo-op at
`.Lno_weak_fn' label.
* sysdeps/mips/mips64/n32/crti.S (_init): Likewise.
* sysdeps/mips/mips64/n64/crti.S (_init): Likewise.
(cherry picked from commit cfaf1949ff1f8336b54c43796d0e2531bc8a40a2)
(cherry picked from commit 65a2b63756a4d622b938910d582d8b807c471c9a)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=901db98f36690e4743feefd985c6ba2d7fd19813
commit 901db98f36690e4743feefd985c6ba2d7fd19813
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Nov 21 11:06:15 2016 -0200
Fix writes past the allocated array bounds in execvpe (BZ#20847)
This patch fixes an invalid write out or stack allocated buffer in
2 places at execvpe implementation:
1. On 'maybe_script_execute' function where it allocates the new
argument list and it does not account that a minimum of argc
plus 3 elements (default shell path, script name, arguments,
and ending null pointer) should be considered. The straightforward
fix is just to take account of the correct list size on argument
copy.
2. On '__execvpe' where the executable file name lenght may not
account for ending '\0' and thus subsequent path creation may
write past array bounds because it requires to add the terminating
null. The fix is to change how to calculate the executable name
size to add the final '\0' and adjust the rest of the code
accordingly.
As described in GCC bug report 78433 [1], these issues were masked off by
GCC because it allocated several bytes more than necessary so that many
off-by-one bugs went unnoticed.
Checked on x86_64 with a latest GCC (7.0.0 20161121) with -O3 on CFLAGS.
[BZ #20847]
* posix/execvpe.c (maybe_script_execute): Remove write past allocated
array bounds.
(__execvpe): Likewise.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78433
(cherry picked from commit d174436712e3cabce70d6cd771f177b6fe0e097b)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 25 ++++++++++
posix/execvpe.c | 15 ++++--
sysdeps/alpha/fpu/s_ceil.c | 7 +--
sysdeps/alpha/fpu/s_ceilf.c | 7 +--
sysdeps/alpha/fpu/s_floor.c | 7 +--
sysdeps/alpha/fpu/s_floorf.c | 7 +--
sysdeps/alpha/fpu/s_rint.c | 3 +
sysdeps/alpha/fpu/s_rintf.c | 3 +
sysdeps/alpha/fpu/s_trunc.c | 7 +--
sysdeps/alpha/fpu/s_truncf.c | 7 +--
sysdeps/mips/mips32/crti.S | 1 +
sysdeps/mips/mips64/n32/crti.S | 1 +
sysdeps/mips/mips64/n64/crti.S | 1 +
sysdeps/x86/cpu-features.c | 14 +++++
sysdeps/x86/cpu-features.h | 6 ++
sysdeps/x86_64/dl-machine.h | 24 ++++++++-
sysdeps/x86_64/dl-trampoline.S | 20 ++++++++
sysdeps/x86_64/dl-trampoline.h | 104 +++++++++++++++++++++++++++++++++++++++-
sysdeps/x86_64/memcpy_chk.S | 2 +-
19 files changed, 228 insertions(+), 33 deletions(-)
--
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Subject: [Bug math/20495] x86_64 performance degradation due to AVX/SSE transition penalty
Date: Thu, 08 Dec 2016 19:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20495
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b73ec923c79ab493a9265930a45800391329571a
commit b73ec923c79ab493a9265930a45800391329571a
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix trunc for big input values
The alpha specific version of trunc and truncf always add and subtract
0x1.0p23 or 0x1.0p52 even for big values. This causes this kind of
errors in the testsuite:
Failure: Test: trunc_towardzero (0x1p107)
Result:
is: 1.6225927682921334e+32 0x1.fffffffffffffp+106
should be: 1.6225927682921336e+32 0x1.0000000000000p+107
difference: 1.8014398509481984e+16 0x1.0000000000000p+54
ulp : 0.5000
max.ulp : 0.0000
Change this by returning the input value when its absolute value is
greater than 0x1.0p23 or 0x1.0p52. NaN have to go through the add and
subtract operations to get possibly silenced.
Finally remove the code to handle inexact exception, trunc should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_trunc.c (__trunc): Return the input value
when its absolute value is greater than 0x1.0p52.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_truncf.c (__truncf): Return the input value
when its absolute value is greater than 0x1.0p23.
[_IEEE_FP_INEXACT] Remove.
(cherry picked from commit b74d259fe793499134eb743222cd8dd7c74a31ce)
(cherry picked from commit e6eab16cc302e6c42f79e1af02ce98ebb9a783bc)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=04c5f782796052de9d06975061eb3376ccbcbdb1
commit 04c5f782796052de9d06975061eb3376ccbcbdb1
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix rint on sNaN input
The alpha version of rint wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Changelog:
* sysdeps/alpha/fpu/s_rint.c (__rint): Add argument with itself
when it is a NaN.
* sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise.
(cherry picked from commit cb7f9d63b921ea1a1cbb4ab377a8484fd5da9a2b)
(cherry picked from commit 8eb9a92e0522f2d4f2d4167df919d066c85d3408)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9b34c1494d8e61bb3d718e2ea83b856030476737
commit 9b34c1494d8e61bb3d718e2ea83b856030476737
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix floor on sNaN input
The alpha version of floor wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Finally remove the code to handle inexact exception, floor should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_floor.c (__floor): Add argument with itself
when it is a NaN.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_floorf.c (__floorf): Likewise.
(cherry picked from commit 65cc568cf57156e5230db9a061645e54ff028a41)
(cherry picked from commit 1912cc082df4739c2388c375f8d486afdaa7d49b)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2afb8a945ddc104c5ef9aa61f32427c19b681232
commit 2afb8a945ddc104c5ef9aa61f32427c19b681232
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue Aug 2 09:18:59 2016 +0200
alpha: fix ceil on sNaN input
The alpha version of ceil wrongly return sNaN for sNaN input. Fix that
by checking for NaN and by returning the input value added with itself
in that case.
Finally remove the code to handle inexact exception, ceil should never
generate such an exception.
Changelog:
* sysdeps/alpha/fpu/s_ceil.c (__ceil): Add argument with itself
when it is a NaN.
[_IEEE_FP_INEXACT] Remove.
* sysdeps/alpha/fpu/s_ceilf.c (__ceilf): Likewise.
(cherry picked from commit 062e53c195b4a87754632c7d51254867247698b4)
(cherry picked from commit 3eff6f84311d2679a58a637e3be78b4ced275762)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=df13b9c22a0fb690a0ab9dd4af163ae3c459d975
commit df13b9c22a0fb690a0ab9dd4af163ae3c459d975
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b4391b0c7def246a4503db1af683122681c12a56
commit b4391b0c7def246a4503db1af683122681c12a56
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Sep 6 08:50:55 2016 -0700
X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]
There is transition penalty when SSE instructions are mixed with 256-bit
AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx
and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM
registers, there is transition penalty when SSE instructions are used
with lazy binding on AVX and AVX512 processors.
To avoid SSE transition penalty, if only the lower 128 bits of the first
8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers
with the zero upper bits.
For AVX and AVX512 processors which support XGETBV with ECX == 1, we can
use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers
or the upper 256 bits of ZMM registers are zero. We can restore only the
non-zero portion of vector registers with AVX/AVX512 load instructions
which will zero-extend upper bits of vector registers.
This patch adds _dl_runtime_resolve_sse_vex which saves and restores
XMM registers with 128-bit AVX store/load instructions. It is used to
preserve YMM/ZMM registers when only the lower 128 bits are non-zero.
_dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added
and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so
that we store and load only the non-zero portion of vector registers.
This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and
_dl_runtime_profile_avx512 when only the lower 128 bits of vector
registers are used.
_dl_runtime_resolve_avx_slow is added and used for AVX processors which
don't support XGETBV with ECX == 1. Since there is no SSE transition
penalty on AVX512 processors which don't support XGETBV with ECX == 1,
_dl_runtime_resolve_avx512_slow isn't provided.
[BZ #20495]
[BZ #20508]
* sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
processors, set Use_dl_runtime_resolve_slow and set
Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
* sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
New.
(bit_arch_Use_dl_runtime_resolve_slow): Likewise.
(index_arch_Use_dl_runtime_resolve_opt): Likewise.
(index_arch_Use_dl_runtime_resolve_slow): Likewise.
* sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
_dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
if Use_dl_runtime_resolve_opt is set. Use
_dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
* sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
(_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
(_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
New.
(_dl_runtime_resolve_opt): Likewise.
(_dl_runtime_profile): Define only if _dl_runtime_profile is
defined.
(cherry picked from commit fb0f7a6755c1bfaec38f490fbfcaa39a66ee3604)
(cherry picked from commit 4b8790c81c1a7b870a43810ec95e08a2e501123d)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d5f4a32a34f048b35360a110a0e6d1c87e3eced
commit 0d5f4a32a34f048b35360a110a0e6d1c87e3eced
Author: Aurelien Jarno <aurelien@aurel32.net>
Date: Thu Nov 24 12:10:13 2016 +0100
x86_64: fix static build of __memcpy_chk for compilers defaulting to
PIC/PIE
When glibc is compiled with gcc 6.2 that has been configured with
to default to PIC/PIE, the static version of __memcpy_chk is not built,
as the test is done on PIC instead of SHARED. Fix the test to check for
SHARED, like it is done for similar functions like memmove_chk.
Changelog:
* sysdeps/x86_64/memcpy_chk.S (__memcpy_chk): Check for SHARED
instead of PIC.
(cherry picked from commit 380ec16d62f459d5a28cfc25b7b20990c45e1cc9)
(cherry picked from commit 2d16e81babd1d7b66d10cec0bc6d6d86a7e0c95e)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0ab02a62e42e63b058e7a4e160dbe51762ef2c46
commit 0ab02a62e42e63b058e7a4e160dbe51762ef2c46
Author: Maciej W. Rozycki <macro@imgtec.com>
Date: Thu Nov 17 19:15:51 2016 +0000
MIPS: Add `.insn' to ensure a text label is defined as code not data
Avoid a build error with microMIPS compilation and recent versions of
GAS which complain if a branch targets a label which is marked as data
rather than microMIPS code:
../sysdeps/mips/mips32/crti.S: Assembler messages:
../sysdeps/mips/mips32/crti.S:72: Error: branch to a symbol in another ISA
mode
make[2]: *** [.../csu/crti.o] Error 1
as commit 9d862524f6ae ("MIPS: Verify the ISA mode and alignment of
branch and jump targets") closed a hole in branch processing, making
relocation calculation respect the ISA mode of the symbol referred.
This allowed diagnosing the situation where an attempt is made to pass
control from code assembled for one ISA mode to code assembled for a
different ISA mode and either relaxing the branch to a cross-mode jump
or if that is not possible, then reporting this as an error rather than
letting such code build and then fail unpredictably at the run time.
This however requires the correct annotation of branch targets as code,
because the ISA mode is not relevant for data symbols and is therefore
not recorded for them. The `.insn' pseudo-op is used for this purpose
and has been supported by GAS since:
Wed Feb 12 14:36:29 1997 Ian Lance Taylor <ian@cygnus.com>
* config/tc-mips.c (mips_pseudo_table): Add "insn".
(s_insn): New static function.
* doc/c-mips.texi: Document .insn.
so there has been no reason to avoid it where required. More recently
this pseudo-op has been documented, by the microMIPS architecture
specification[1][2], as required for the correct interpretation of any
code label which is not followed by an actual instruction in an assembly
source.
Use it in our crti.S files then, to mark that the trailing label there
with no instructions following is indeed not a code bug and the branch
is legitimate.
References:
[1] "MIPS Architecture for Programmers, Volume II-B: The microMIPS32
Instruction Set", MIPS Technologies, Inc., Document Number: MD00582,
Revision 5.04, January 15, 2014, Section 7.1 "Assembly-Level
Compatibility", p. 533
[2] "MIPS Architecture for Programmers, Volume II-B: The microMIPS64
Instruction Set", MIPS Technologies, Inc., Document Number: MD00594,
Revision 5.04, January 15, 2014, Section 8.1 "Assembly-Level
Compatibility", p. 623
2016-11-23 Matthew Fortune <Matthew.Fortune@imgtec.com>
Maciej W. Rozycki <macro@imgtec.com>
* sysdeps/mips/mips32/crti.S (_init): Add `.insn' pseudo-op at
`.Lno_weak_fn' label.
* sysdeps/mips/mips64/n32/crti.S (_init): Likewise.
* sysdeps/mips/mips64/n64/crti.S (_init): Likewise.
(cherry picked from commit cfaf1949ff1f8336b54c43796d0e2531bc8a40a2)
(cherry picked from commit 65a2b63756a4d622b938910d582d8b807c471c9a)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=901db98f36690e4743feefd985c6ba2d7fd19813
commit 901db98f36690e4743feefd985c6ba2d7fd19813
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Nov 21 11:06:15 2016 -0200
Fix writes past the allocated array bounds in execvpe (BZ#20847)
This patch fixes an invalid write out or stack allocated buffer in
2 places at execvpe implementation:
1. On 'maybe_script_execute' function where it allocates the new
argument list and it does not account that a minimum of argc
plus 3 elements (default shell path, script name, arguments,
and ending null pointer) should be considered. The straightforward
fix is just to take account of the correct list size on argument
copy.
2. On '__execvpe' where the executable file name lenght may not
account for ending '\0' and thus subsequent path creation may
write past array bounds because it requires to add the terminating
null. The fix is to change how to calculate the executable name
size to add the final '\0' and adjust the rest of the code
accordingly.
As described in GCC bug report 78433 [1], these issues were masked off by
GCC because it allocated several bytes more than necessary so that many
off-by-one bugs went unnoticed.
Checked on x86_64 with a latest GCC (7.0.0 20161121) with -O3 on CFLAGS.
[BZ #20847]
* posix/execvpe.c (maybe_script_execute): Remove write past allocated
array bounds.
(__execvpe): Likewise.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78433
(cherry picked from commit d174436712e3cabce70d6cd771f177b6fe0e097b)
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 25 ++++++++++
posix/execvpe.c | 15 ++++--
sysdeps/alpha/fpu/s_ceil.c | 7 +--
sysdeps/alpha/fpu/s_ceilf.c | 7 +--
sysdeps/alpha/fpu/s_floor.c | 7 +--
sysdeps/alpha/fpu/s_floorf.c | 7 +--
sysdeps/alpha/fpu/s_rint.c | 3 +
sysdeps/alpha/fpu/s_rintf.c | 3 +
sysdeps/alpha/fpu/s_trunc.c | 7 +--
sysdeps/alpha/fpu/s_truncf.c | 7 +--
sysdeps/mips/mips32/crti.S | 1 +
sysdeps/mips/mips64/n32/crti.S | 1 +
sysdeps/mips/mips64/n64/crti.S | 1 +
sysdeps/x86/cpu-features.c | 14 +++++
sysdeps/x86/cpu-features.h | 6 ++
sysdeps/x86_64/dl-machine.h | 24 ++++++++-
sysdeps/x86_64/dl-trampoline.S | 20 ++++++++
sysdeps/x86_64/dl-trampoline.h | 104 +++++++++++++++++++++++++++++++++++++++-
sysdeps/x86_64/memcpy_chk.S | 2 +-
19 files changed, 228 insertions(+), 33 deletions(-)
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>From glibc-bugs-return-35280-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 08 22:47:45 2016
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From: "nungon.localization at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20952] New: Please add the new yuw_PG locale
Date: Thu, 08 Dec 2016 22:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20952
Bug ID: 20952
Summary: Please add the new yuw_PG locale
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: nungon.localization at gmail dot com
CC: libc-locales at sourceware dot org
Target Milestone: ---
Created attachment 9694
--> https://sourceware.org/bugzilla/attachment.cgi?id=9694&action=edit
Locale definition file for Yau/Nungon, PNG
Dear maintainers,
Please find attached the locale definition for yuw_PG to be
considered for inclusion in glibc.
The language concerned is Yau (Nungon dialect), which is spoken in Morobe
Province of Papua New Guinea.
The locale definition file has been successfully test-installed in Ubuntu 14.04
LTS using `localedef -i yuw_PG -c -f UTF-8 yuw_PG` and has produced
appropriately localized output from the `date` command.
Thanks!
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>From glibc-bugs-return-35281-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 08 23:22:51 2016
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Subject: [Bug localedata/20952] yuw_PG: new locale
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Please add the new yuw_PG |yuw_PG: new locale
|locale |
Severity|minor |enhancement
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>From glibc-bugs-return-35282-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 09 07:36:51 2016
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Subject: [Bug network/13500] __cmsg_nxthdr in cmsg_nxthdr.c (CMSG_NXTHDR) has undefined behavior when setting up ancillary data
Date: Fri, 09 Dec 2016 07:36:00 -0000
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--- Comment #6 from phperl <250716887 at qq dot com> ---
(In reply to Florian Weimer from comment #5)
> (In reply to phperl from comment #4)
> > use NEED_A_WORKAROUND_FOR_BUG_13500 to zero buf, will make length check
> > useless, even to introduce security bugs.
>
> Sorry, I don't understand this comment.
>
> The length check is *always* useless for constructing ancillary data lists,
> but it is not useless for *reading* them.
Sorry, I missed the *reading* process.
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>From glibc-bugs-return-35283-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 09 10:33:12 2016
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Subject: [Bug network/16421] IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
Date: Fri, 09 Dec 2016 10:33:00 -0000
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--- Comment #26 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0abbe7cd700951082b314182a0958d65238297ef
commit 0abbe7cd700951082b314182a0958d65238297ef
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Dec 9 11:27:44 2016 +0100
inet: Make IN6_IS_ADDR_UNSPECIFIED etc. usable with POSIX [BZ #16421]
Previously, under some feature test macros and compilers, the
macros were defined, but references undefined struct members
in their implementation.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 15 +++++++++
inet/Makefile | 5 ++-
inet/netinet/in.h | 44 +++++++++++++--------------
math/fegetmode.c => inet/tst-checks-posix.c | 15 ++++-----
inet/tst-checks.c | 3 +-
5 files changed, 46 insertions(+), 36 deletions(-)
copy math/fegetmode.c => inet/tst-checks-posix.c (81%)
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>From glibc-bugs-return-35284-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 09 10:33:39 2016
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Subject: [Bug network/16421] IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #27 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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>From glibc-bugs-return-35285-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 09 13:10:53 2016
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Subject: [Bug network/19728] out of bounds stack read in libidn function idna_to_ascii_4i
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----------------------------------------------------------------------------
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>From glibc-bugs-return-35286-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 09 13:11:29 2016
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Subject: [Bug dynamic-link/20204] Protect _dl_open_hook and _dlfcn_hook with pointer guard
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----------------------------------------------------------------------------
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/14717] Allow choice of clock source for calls to sem_timedwait() and pthread_mutex_timedwait().
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CC| |bique.alexandre at gmail dot com
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Subject: [Bug admin/13933] web site links to git are not so easy to find
Date: Fri, 09 Dec 2016 21:24:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
Fixed. Click on the "Sources" tab now.
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From: "markus at trippelsdorf dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/20956] New: debug/tst-backtrace3-6 don't work with -O3 anymore
Date: Sat, 10 Dec 2016 17:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20956
Bug ID: 20956
Summary: debug/tst-backtrace3-6 don't work with -O3 anymore
Product: glibc
Version: 2.26
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: markus at trippelsdorf dot de
CC: drepper.fsp at gmail dot com, fweimer at redhat dot com
Target Milestone: ---
Since:
commit c23de0aacbeaa7a091609b35764bed931475a16d
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Dec 9 08:18:27 2016 +0100
support: Introduce new subdirectory for test infrastructure
I get when building with -O3:
FAIL: debug/tst-backtrace3
FAIL: debug/tst-backtrace4
FAIL: debug/tst-backtrace5
FAIL:
debug/tst-backtrace6
Before:
markus@x4 debug % ./tst-backtrace3
Obtained backtrace with 4 functions
Function 0: ./tst-backtrace3(fn+0x1f) [0x4019df]
Function 1: ./tst-backtrace3(fn+0xf8) [0x401ab8]
Function 2: ./tst-backtrace3(fn+0xf8) [0x401ab8]
Function 3: ./tst-backtrace3() [0x401afe]
After:
markus@x4 debug % ./tst-backtrace3
Obtained backtrace with 4 functions
Function 0: ./tst-backtrace3(fn+0x1f) [0x40136f]
Function 1: ./tst-backtrace3(fn+0xf8) [0x401448]
Function 2: ./tst-backtrace3() [0x40148e]
Function 3: ./tst-backtrace3() [0x4014a9]
Failure on line 70
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Subject: [Bug libc/20956] debug/tst-backtrace3-6 don't work with -O3 anymore
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
The key aspect appears to be building with -O3, which is why I didn't spot the
failure during my testing.
I'll try to remove one indirection from the test and see if that helps.
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Subject: [Bug libc/20956] debug/tst-backtrace3-6 don't work with -O3 anymore
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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Ever confirmed|0 |1
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Subject: [Bug libc/20956] debug/tst-backtrace3-6 don't work with -O3 anymore
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What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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Subject: [Bug libc/20956] debug/tst-backtrace3-6 don't work with -O3 anymore
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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commit 341657bc9c17d3ea4546c6d998e67ca349a78e80
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Dec 10 21:16:57 2016 +0100
debug: Additional compiler barriers for backtrace tests [BZ #20956]
The new test framework changed the call stacks. The weak attribute
acts as a strong compiler barrier. Some static functions had to be
declared extern as a consequence.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 ++++++++++++++
debug/tst-backtrace.h | 2 +-
debug/tst-backtrace2.c | 10 ++++------
debug/tst-backtrace3.c | 8 +++-----
debug/tst-backtrace4.c | 8 +++-----
debug/tst-backtrace5.c | 8 +++-----
6 files changed, 28 insertions(+), 22 deletions(-)
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Subject: [Bug libc/17252] getrandom and getentropy syscall
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What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Dec 12 17:28:03 2016 +0100
Add getentropy, getrandom, <sys/random.h> [BZ #17252]
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 48 ++++
NEWS | 3 +
manual/crypt.texi | 112 +++++++++
manual/math.texi | 3 +-
stdlib/Makefile | 7 +-
stdlib/Versions | 1 +
stdlib/getentropy.c | 31 +++
stdlib/getrandom.c | 31 +++
stdlib/sys/random.h | 42 ++++
stdlib/tst-getrandom.c | 245 ++++++++++++++++++++
sysdeps/arm/nacl/libc.abilist | 2 +
sysdeps/unix/sysv/linux/aarch64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/alpha/libc.abilist | 2 +
sysdeps/unix/sysv/linux/arm/libc.abilist | 2 +
sysdeps/unix/sysv/linux/getentropy.c | 73 ++++++
sysdeps/unix/sysv/linux/getrandom.c | 43 ++++
sysdeps/unix/sysv/linux/hppa/libc.abilist | 2 +
sysdeps/unix/sysv/linux/i386/libc.abilist | 2 +
sysdeps/unix/sysv/linux/ia64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist | 2 +
sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist | 2 +
sysdeps/unix/sysv/linux/microblaze/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips32/fpu/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips32/nofpu/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips64/n32/libc.abilist | 2 +
.../unix/sysv/linux/mips/mips64/n64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/nios2/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc32/fpu/libc.abilist | 2 +
.../linux/powerpc/powerpc32/nofpu/libc.abilist | 2 +
.../sysv/linux/powerpc/powerpc64/libc-le.abilist | 2 +
.../unix/sysv/linux/powerpc/powerpc64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sh/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist | 2 +
sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist | 2 +
.../sysv/linux/tile/tilegx/tilegx32/libc.abilist | 2 +
.../sysv/linux/tile/tilegx/tilegx64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist | 2 +
sysdeps/unix/sysv/linux/x86_64/64/libc.abilist | 2 +
sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist | 2 +
41 files changed, 693 insertions(+), 4 deletions(-)
create mode 100644 stdlib/getentropy.c
create mode 100644 stdlib/getrandom.c
create mode 100644 stdlib/sys/random.h
create mode 100644 stdlib/tst-getrandom.c
create mode 100644 sysdeps/unix/sysv/linux/getentropy.c
create mode 100644 sysdeps/unix/sysv/linux/getrandom.c
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>From glibc-bugs-return-35296-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 12 16:52:05 2016
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Subject: [Bug libc/17252] getrandom and getentropy syscall
Date: Mon, 12 Dec 2016 16:52:00 -0000
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--- Comment #9 from Cristian Rodríguez <crrodriguez at opensuse dot org> ---
Please make it compatible with existing software written for BSD that expects
getentropy to be declared in unistd.h
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>From glibc-bugs-return-35297-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 09:14:18 2016
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Subject: [Bug stdio/17829] Incorrect handling of precision specifier in printf family
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Subject: [Bug dynamic-link/14370] ld.so crashes on mismatched TLS/non-TLS symbols
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>From glibc-bugs-return-35299-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 13:33:53 2016
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
Date: Tue, 13 Dec 2016 13:33:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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Status|RESOLVED |UNCONFIRMED
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1398370
Resolution|INVALID |---
Summary|destructor called after |ld.so: Improper assert
|shared library relelase |map->l_init_called in
|(crash in dl_close()) |dlclose
Ever confirmed|1 |0
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
The assertion is indeed invalid. We see it in current Fedora 25 with
gssntlmssp.
The triggering conditions appear to be as follow:
Application links against libkrb5.
libkrb5 dlopens a plugin DSO (gssntlmssp) with RTLD_NODELETE.
The plugin DSO is in turn linked against libkrb5.
The application exits.
The plugin DSO destructor runs.
The libkrb5 destructor runs, calling dlclose on the plugin DSO.
The assertion fires.
The cause appears to be that at “The plugin DSO destructor runs.”, the dynamic
linker resets the l_init_called flag to false. However, this execution trace
looks totally valid, and it is difficult to see how libkrb5 could do anything
else here.
Carlos and I think we just need to remove the assert.
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>From glibc-bugs-return-35300-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 13:38:01 2016
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Subject: [Bug nptl/13165] pthread_cond_wait() can consume a signal that was sent before it started waiting
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>From glibc-bugs-return-35301-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 14:52:38 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/20964] New: sunrpc: Stack-based buffer overflow in getrpcport with RES_USE_INET6
Date: Tue, 13 Dec 2016 14:52:00 -0000
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Bug ID: 20964
Summary: sunrpc: Stack-based buffer overflow in getrpcport with
RES_USE_INET6
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: network
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Flags: security+
First seen in the libtirpc repository here:
commit 4a8abc724adc6a8ad0d577d51e87098b73c8f480
Author: ksourav <sourav.kir@gmail.com>
Date: Wed Aug 17 16:01:29 2016 -0400
getrpcport: Possible buffer overflow in memcpy
The if condition, when true, can result in memcpy
overflow as source sizecan become greater than the
destination in memcpy. Modified the if condition
to prevent memcoy overflow.
Signed-off-by: ksourav <sourav.kir@gmail.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
It's difficult to write a test case for the overflow as such. I think the
function needs to fail if gethostbyname returns an unexpected address family,
or perhaps we should call getaddrinfo with AF_INET instead.
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>From glibc-bugs-return-35302-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 15:01:39 2016
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Subject: [Bug network/20964] sunrpc: Stack-based buffer overflow in getrpcport with RES_USE_INET6
Date: Tue, 13 Dec 2016 15:01:00 -0000
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
There are similar problems in other places in the sunrpc code:
sunrpc/clnt_gen.c:clnt_create
sunrpc/clnt_simp.c:callrpc
sunrpc/rpcinfo.c:pmapdump
sunrpc/rpcinfo.c:get_inet_address
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>From glibc-bugs-return-35303-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 15:02:54 2016
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Subject: [Bug network/19582] Deprecate RES_USE_INET6
Date: Tue, 13 Dec 2016 15:02:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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| |illa/show_bug.cgi?id=20964
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
Bug 20964 is a security bug introduced by RES_USE_INET6.
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Subject: [Bug network/20964] sunrpc: Stack-based buffer overflow in getrpcport with RES_USE_INET6
Date: Tue, 13 Dec 2016 15:02:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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| |illa/show_bug.cgi?id=19582
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>From glibc-bugs-return-35305-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 13 16:17:57 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nptl/20965] New: x86_64: call/push/pop is invalid in inline assembly
Date: Tue, 13 Dec 2016 16:17:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20965
Bug ID: 20965
Summary: x86_64: call/push/pop is invalid in inline assembly
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
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CC: drepper.fsp at gmail dot com
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Flags: security-
Due to the red zone, it is currently not possible to write below the stack
without moving it below the red zone first.
I only found call instructions in inline assembly:
x86_64/lowlevellock.h: "3:\tcallq __lll_lock_wait_private\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_lock_wait\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_robust_lock_wait\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_lock_wait\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_robust_lock_wait\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_timedlock_wait\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_robust_timedlock_wait\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_unlock_wake_private\n
x86_64/lowlevellock.h: "3:\tcallq __lll_unlock_wake\n"
x86_64/lowlevellock.h: "3:\tcallq __lll_unlock_wake\n"
x86_64/nptl/tls.h: "callq *%%fs:%P1" \
x86_64/x32/nptl/tls.h: "callq *%q0" \
This may not be a problem today, but could change with changes in the GCC
optimizers.
Relevant gcc-help thread:
<https://gcc.gnu.org/ml/gcc-help/2016-12/msg00056.html>
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Subject: [Bug time/11620] Bad design of timezone conversions
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David Ward <david.ward at ll dot mit.edu> changed:
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CC| |david.ward at ll dot mit.edu
--- Comment #9 from David Ward <david.ward at ll dot mit.edu> ---
(In reply to Maxim Yegorushkin from comment #8)
> Upstream tz project exposes the functions required for easy and thread-save
> timezone conversions, see
> https://github.com/eggert/tz/blob/master/private.h#L409
>
> Would it be possible to expose these NETBSD_INSPIRED 4 functions in glibc?
This now appears on the glibc master to-do list:
https://sourceware.org/glibc/wiki/Development_Todo/Master#MT-Safe_and_TZ-aware_functions
I also would like to see these functions added to glibc, especially for thread
safety reasons. The tz project implements these functions in a static library
(libtz.a), but that is only intended to be used directly with the bundled
utilities, as can be seen at the top of the header file referenced above:
/*
** This header is for use ONLY with the time conversion code.
** There is no guarantee that it will remain unchanged,
** or that it will remain at all.
** Do NOT copy it to any system include directory.
** Thank you!
*/
The same functions are also exposed by gnulib, but unfortunately its
implementation is not thread-safe: the localtime_rz and mktime_z functions are
essentially wrappers around localtime_r and mktime, which modify the TZ
environment variable before or after if needed.
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From: "lmy441900 at aosc dot io" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/20967] New: Several Tests failed on MIPS64 N64
Date: Wed, 14 Dec 2016 16:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20967
Bug ID: 20967
Summary: Several Tests failed on MIPS64 N64
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
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I am doing a LFS on MIPS64, with N64 ABI. Following the official LFS handbook,
in http://www.linuxfromscratch.org/lfs/view/stable-systemd/chapter06/glibc.html
it is required (or, strongly recommended) to run `make test`. So I did it, and
after looooong time it gave a summary as:
```
FAIL: conform/UNIX98/sys/socket.h/conform
FAIL: conform/XOPEN2K/arpa/inet.h/conform
FAIL: conform/XOPEN2K/netdb.h/conform
FAIL: conform/XOPEN2K/netinet/in.h/conform
FAIL: conform/XOPEN2K/sys/socket.h/conform
FAIL: conform/XOPEN2K8/arpa/inet.h/conform
FAIL: conform/XOPEN2K8/netdb.h/conform
FAIL: conform/XOPEN2K8/netinet/in.h/conform
FAIL: conform/XOPEN2K8/sys/socket.h/conform
FAIL: conform/XPG4/sys/socket.h/conform
FAIL: elf/check-execstack
FAIL: elf/check-localplt
FAIL: elf/tst-execstack
FAIL: elf/tst-execstack-needed
XPASS: elf/tst-protected1a
XPASS: elf/tst-protected1b
FAIL: math/test-double
FAIL: math/test-double-finite
FAIL: math/test-float
FAIL: math/test-float-finite
FAIL: math/test-idouble
FAIL: math/test-ifloat
FAIL: nptl/tst-cancel24-static
FAIL: nptl/tst-execstack
FAIL: nptl/tst-stack4
FAIL: posix/tst-getaddrinfo4
FAIL: posix/tst-getaddrinfo5
Summary of test results:
25 FAIL
2377 PASS
43 XFAIL
2 XPASS
make[1]: *** [Makefile:331: tests] Error 1
make[1]: Leaving directory '/sources/glibc-2.24'
make: *** [Makefile:9: check] Error 2
```
Filtered out tests marked as "XFAIL" or "FAIL":
```
XFAIL: posix/annexc
FAIL: posix/tst-getaddrinfo5
FAIL: posix/tst-getaddrinfo4
FAIL: nptl/tst-execstack
XFAIL: nptl/tst-once5
FAIL: nptl/tst-cancel24-static
FAIL: nptl/tst-stack4
FAIL: elf/check-localplt
FAIL: elf/tst-execstack
FAIL: elf/check-execstack
FAIL: elf/tst-execstack-needed
FAIL: math/test-double-finite
FAIL: math/test-float-finite
FAIL: math/test-double
FAIL: math/test-ifloat
FAIL: math/test-idouble
FAIL: math/test-float
XFAIL: conform/POSIX2008/netinet/in.h/conform
XFAIL: conform/POSIX2008/netdb.h/conform
XFAIL: conform/POSIX2008/arpa/inet.h/conform
XFAIL: conform/POSIX2008/signal.h/conform
XFAIL: conform/POSIX2008/sys/wait.h/conform
XFAIL: conform/POSIX2008/sys/socket.h/conform
XFAIL: conform/XPG3/signal.h/conform
XFAIL: conform/XPG3/varargs.h/linknamespace
XFAIL: conform/XPG3/varargs.h/conform
XFAIL: conform/XPG3/sys/wait.h/conform
XFAIL: conform/POSIX/sys/wait.h/conform
XFAIL: conform/UNIX98/netinet/in.h/conform
XFAIL: conform/UNIX98/netdb.h/conform
XFAIL: conform/UNIX98/arpa/inet.h/conform
XFAIL: conform/UNIX98/signal.h/conform
XFAIL: conform/UNIX98/ndbm.h/linknamespace
XFAIL: conform/UNIX98/ndbm.h/conform
XFAIL: conform/UNIX98/ucontext.h/conform
XFAIL: conform/UNIX98/varargs.h/linknamespace
XFAIL: conform/UNIX98/varargs.h/conform
XFAIL: conform/UNIX98/sys/wait.h/conform
FAIL: conform/UNIX98/sys/socket.h/conform
FAIL: conform/XOPEN2K/netinet/in.h/conform
FAIL: conform/XOPEN2K/netdb.h/conform
FAIL: conform/XOPEN2K/arpa/inet.h/conform
XFAIL: conform/XOPEN2K/signal.h/conform
XFAIL: conform/XOPEN2K/ndbm.h/linknamespace
XFAIL: conform/XOPEN2K/ndbm.h/conform
XFAIL: conform/XOPEN2K/ucontext.h/conform
XFAIL: conform/XOPEN2K/sys/wait.h/conform
FAIL: conform/XOPEN2K/sys/socket.h/conform
XFAIL: conform/XOPEN2K/semaphore.h/conform
FAIL: conform/XOPEN2K8/netinet/in.h/conform
FAIL: conform/XOPEN2K8/netdb.h/conform
FAIL: conform/XOPEN2K8/arpa/inet.h/conform
XFAIL: conform/XOPEN2K8/signal.h/conform
XFAIL: conform/XOPEN2K8/ndbm.h/linknamespace
XFAIL: conform/XOPEN2K8/ndbm.h/conform
XFAIL: conform/XOPEN2K8/sys/wait.h/conform
FAIL: conform/XOPEN2K8/sys/socket.h/conform
XFAIL: conform/XPG4/netinet/in.h/conform
XFAIL: conform/XPG4/netdb.h/conform
XFAIL: conform/XPG4/arpa/inet.h/conform
XFAIL: conform/XPG4/signal.h/conform
XFAIL: conform/XPG4/ndbm.h/linknamespace
XFAIL: conform/XPG4/ndbm.h/conform
XFAIL: conform/XPG4/ucontext.h/conform
XFAIL: conform/XPG4/varargs.h/linknamespace
XFAIL: conform/XPG4/varargs.h/conform
XFAIL: conform/XPG4/sys/wait.h/conform
FAIL: conform/XPG4/sys/socket.h/conform
```
Is it expected? Or is my Glibc broken? Or should I build a relatively complete
system first?
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/20967] Several Tests failed on MIPS64 N64
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2016-12-14
Ever confirmed|0 |1
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Known failures are listed here for glibc 2.24:
https://sourceware.org/glibc/wiki/Release/2.24
FAIL: conform/UNIX98/sys/socket.h/conform
FAIL: conform/XOPEN2K/arpa/inet.h/conform
FAIL: conform/XOPEN2K/netdb.h/conform
FAIL: conform/XOPEN2K/netinet/in.h/conform
FAIL: conform/XOPEN2K/sys/socket.h/conform
FAIL: conform/XOPEN2K8/arpa/inet.h/conform
FAIL: conform/XOPEN2K8/netdb.h/conform
FAIL: conform/XOPEN2K8/netinet/in.h/conform
FAIL: conform/XOPEN2K8/sys/socket.h/conform
FAIL: conform/XPG4/sys/socket.h/conform
Can you look to see what these errors are? There should be matching *.out file
in your build directory for each of these which explains why the conform test
fails. Usually these are benign because they don't immediately impact core
functionality, but will cause problems in some more complex applications.
FAIL: elf/check-execstack
FAIL: elf/check-localplt
FAIL: elf/tst-execstack
FAIL: elf/tst-execstack-needed
These are serious security issues and toolchain configuration issues. Either a
misconfiguration or a bootstrap with an executable stack (bad). Might be one
object which is being added from the compiler which has the wrong attributes.
FAIL: math/test-double
FAIL: math/test-double-finite
FAIL: math/test-float
FAIL: math/test-float-finite
FAIL: math/test-idouble
FAIL: math/test-ifloat
Could be compiler issues or hardware issues. You have to look at the *.out
files to see if your errors are all off by 1 or 2 ULPS then it's just a case
that your hardware might be slightly less precise and so the expected error set
needs to be adjusted a bit for your given hardware. That patch could go
upstream.
FAIL: nptl/tst-cancel24-static
Could be anything. Maybe related to unwind information or compiler issues
generating the right unwind information to cancel the thread in the test. Look
at the *.out file again.
FAIL: nptl/tst-execstack
FAIL: nptl/tst-stack4
Potentially related to the above execstack failures.
FAIL: posix/tst-getaddrinfo4
FAIL: posix/tst-getaddrinfo5
Probably harmless and related to your networking configuration e.g. can you
reach the internet or not.
The failures don't look terrible, not the best, and they indicate some tooling
issues, but not terrible. Your system will probably run.
I'll move this to WAITING for you to respond with some results of looking at
the *.out files.
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Subject: [Bug build/19398] linknamespace tests fail with massively parallel build
Date: Wed, 14 Dec 2016 17:29:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #1 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
I fixed this with:
commit 6c50bb532bb1f47084762e16fbf52af9b5a752d8
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Nov 3 22:47:02 2016 +0000
Fix linknamespace parallel test failures.
Having found that with my script to build many glibc variants I could
reproduce the linknamespace test failures in parallel builds (that
various people had previously reported but I hadn't seen myself), I
investigated those failures further. This patch adds a missing
dependency to those tests.
Tested for x86_64, including the configuration where I saw those
failures and where I don't see them with this patch.
* conform/Makefile ($(linknamespace-header-tests)): Also depend on
$(linknamespace-symlists-tests).
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commit 2bf6e649d6db0c678b49b5d634022f60e6335b42
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 14 17:30:06 2016 +0000
Add [BZ #19398] marker to ChangeLog entry.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
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>From glibc-bugs-return-35311-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 14 17:49:23 2016
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Subject: [Bug dynamic-link/20915] global-dynamic TLS broken on aarch64
Date: Wed, 14 Dec 2016 17:49:00 -0000
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Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> changed:
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----------------------------------------------------------------------------
CC| |tuliom at linux dot vnet.ibm.com
--- Comment #3 from Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> ---
This also affects ppc64le.
Reverting the patch also made the test pass.
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>From glibc-bugs-return-35312-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 14 18:02:49 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug build/20967] Several Tests failed on MIPS64 N64
Date: Wed, 14 Dec 2016 18:02:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Omnibus bugs like this aren't useful and should be closed as INVALID,
because there is no good way of telling whether or in what version an
issue is fixed, and Bugzilla can only track bugs as fixed or not fixed,
not as partly fixed. Bugs for test failures are only useful once triaged
to be a single issue, not a problem with your test environment, likely to
have a single fix and apparently distinct from all other open bugs. At
that point the bug subject should describe the issue in logical terms
rather than in terms of the failing tests.
> FAIL: elf/check-execstack
> FAIL: elf/check-localplt
> FAIL: elf/tst-execstack
> FAIL: elf/tst-execstack-needed
>
> These are serious security issues and toolchain configuration issues. Either a
> misconfiguration or a bootstrap with an executable stack (bad). Might be one
> object which is being added from the compiler which has the wrong attributes.
See the comments on the XFAIL I added for check-execstack. I haven't
investigated whether the others should be XFAILed for the same reasons.
> FAIL: nptl/tst-cancel24-static
>
> Could be anything. Maybe related to unwind information or compiler issues
It's bug 19826. Illustrating again why testing master is more useful than
testing releases.
> FAIL: nptl/tst-stack4
>
> Potentially related to the above execstack failures.
nptl/tst-stack4 fails on many platforms. See
<https://sourceware.org/ml/libc-alpha/2016-11/msg00565.html>.
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Subject: [Bug math/20947] fmax, fmin sNaN handling
Date: Wed, 14 Dec 2016 22:42:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f02bb0004c5b1944333fd8e74ac1efda3074084b
commit f02bb0004c5b1944333fd8e74ac1efda3074084b
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 14 22:41:26 2016 +0000
Fix generic fmax, fmin sNaN handling (bug 20947).
Various fmax and fmin function implementations mishandle sNaN
arguments:
(a) When both arguments are NaNs, the return value should be a qNaN,
but sometimes it is an sNaN if at least one argument is an sNaN.
(b) Under TS 18661-1 semantics, if either argument is an sNaN then the
result should be a qNaN (whereas if one argument is a qNaN and the
other is not a NaN, the result should be the non-NaN argument).
Various implementations treat sNaNs like qNaNs here.
This patch fixes the generic implementations used in the absence of
architecture-specific versions.
Tested for mips64 and powerpc (together with testcases that I'll add
along with the x86_64 / x86 fixes).
[BZ #20947]
* math/s_fmax_template.c (M_DECL_FUNC (__fmax)): Add the arguments
when either is a signaling NaN.
* math/s_fmin_template.c (M_DECL_FUNC (__fmin)): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
math/s_fmax_template.c | 9 ++++++++-
math/s_fmin_template.c | 9 ++++++++-
3 files changed, 21 insertions(+), 2 deletions(-)
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Subject: [Bug math/20947] fmax, fmin sNaN handling
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 9ce4ac64b234c976ae56061afd5774896c5513c9
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Dec 15 00:43:16 2016 +0000
Fix powerpc fmax, fmin sNaN handling (bug 20947).
Various fmax and fmin function implementations mishandle sNaN
arguments:
(a) When both arguments are NaNs, the return value should be a qNaN,
but sometimes it is an sNaN if at least one argument is an sNaN.
(b) Under TS 18661-1 semantics, if either argument is an sNaN then the
result should be a qNaN (whereas if one argument is a qNaN and the
other is not a NaN, the result should be the non-NaN argument).
Various implementations treat sNaNs like qNaNs here.
This patch fixes the powerpc versions of these functions (shared by
float and double, 32-bit and 64-bit). The structure of those versions
is that all ordered cases are already handled before anything dealing
with the case where the arguments are unordered; thus, this patch
causes no change to the code executed in the common case (neither
argument a NaN).
Tested for powerpc (32-bit and 64-bit), together with tests to be
added along with the x86_64 / x86 fixes.
[BZ #20947]
* sysdeps/powerpc/fpu/s_fmax.S (__fmax): Add the arguments when
either is a signaling NaN.
* sysdeps/powerpc/fpu/s_fmin.S (__fmin): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
sysdeps/powerpc/fpu/s_fmax.S | 37 ++++++++++++++++++++++++++++++++++++-
sysdeps/powerpc/fpu/s_fmin.S | 37 ++++++++++++++++++++++++++++++++++++-
3 files changed, 79 insertions(+), 2 deletions(-)
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Subject: [Bug build/20967] Several Tests failed on MIPS64 N64
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--- Comment #3 from Junde Yhi <lmy441900 at aosc dot io> ---
Created attachment 9698
--> https://sourceware.org/bugzilla/attachment.cgi?id=9698&action=edit
Glibc make test .out results
These are the FAILed tests' `.out` files. For duplicated files I stored them
into directories, and for others I didn't.
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/20971] New: powerpc64/power7 memchr overflows internal pointer check
Date: Thu, 15 Dec 2016 11:53:00 -0000
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Bug ID: 20971
Summary: powerpc64/power7 memchr overflows internal pointer
check
Product: glibc
Version: 2.13
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: adhemerval.zanella at linaro dot org
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On POWER7 memchr.S:
24 ENTRY (__memchr)
25 CALL_MCOUNT 3
26 dcbt 0,r3
27 clrrdi r8,r3,3
28 insrdi r4,r4,8,48
29 add r7,r3,r5 /* Calculate the last acceptable address. */
The r7 addition should handle overflow, otherwise pointer check in the code may
fail resulting in wrong output. A simple test triggers the issue:
--
#define _GNU_SOURCE 1
#include <string.h>
#include <stdio.h>
void *
my_rawmemchr (const void *s, int c)
{
if (c != '\0')
return memchr (s, c, (size_t)-1);
return (char *)s + strlen (s);
}
int main ()
{
// p=0x3fffb057fe00 | aling=10
int seek_char = 0x41;
size_t align = 10;
unsigned char input [32];
input[10] = 0x34;
input[11] = 0x78;
input[12] = 0x3d;
input[13] = 0x7b;
input[14] = 0xa1;
input[15] = seek_char;
printf ("%p\n", my_rawmemchr (input+align, seek_char));
printf ("%p\n", rawmemchr (input+align, seek_char));
return 0;
}
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Subject: [Bug string/20971] powerpc64/power7 memchr overflows internal pointer check
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What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |adhemerval.zanella at linaro dot o
| |rg
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/20967] Several Tests failed on MIPS64 N64
Date: Thu, 15 Dec 2016 14:26:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
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Resolution|--- |INVALID
--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Junde Yhi from comment #3)
> Created attachment 9698 [details]
> Glibc make test .out results
>
> These are the FAILed tests' `.out` files. For duplicated files I stored them
> into directories, and for others I didn't.
Your double results look terrible, perhaps compiler issues that need to be
tracked down. Otherwise the rest of the math tests are OK (within 1-2 ULPs).
The namespace issues look like kernel socket definition issues and type issues.
They are all the same issue related to IOC* constants and msg_iovlen. Might
cause issues, you need to investigate that in more detail.
The execkstack failures are related to missing PT_GNU_STACK markup which means
you have to walk down the toolchain stack and find the toolchain objects which
make up the runtime and see which ones are missing the right stack markup and
then figure out why it wasn't set. This is almost always a configuration issue
with the toolchain used.
As Joseph notes this bug isn't all that useful. There isn't anything really
wrong with the glibc build system so I'm marking this RESOLVED INVALID. If you
still need help please email libc-help@sourceware.org.
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>From glibc-bugs-return-35319-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 14:35:37 2016
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From: "krizan at eset dot sk" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20972] New: ld-linux crashing with SIGSEGV when preloading libesets_pac.so to libc.so
Date: Thu, 15 Dec 2016 14:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20972
Bug ID: 20972
Summary: ld-linux crashing with SIGSEGV when preloading
libesets_pac.so to libc.so
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: dynamic-link
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Created attachment 9700
--> https://sourceware.org/bugzilla/attachment.cgi?id=9700&action=edit
output of libc run
I have a problem with latest glibc 2.24 and our on-access preload library on
64bit Fedora 25 (the same also with glibc 2.17 on CentOS 7 and on 32bit archs).
It seems, that the dynamic linker is crashing with SIGSEGV while preloading
libesets_pac.so when libc.so is started as a normal program:
LD_DEBUG=all LD_PRELOAD=./libesets_pac.so /lib64/libc-2.24.so > libc.txt 2>&1
I got a populated backtrace only when attaching gdb to the shell and following
forked child:
#0 0x00005623257aa717 in _dl_vdso_vsym (
name=name@entry=0x5623257efce1 "__vdso_gettimeofday",
vers=vers@entry=0x7ffe43447760) at ../sysdeps/unix/sysv/linux/dl-vdso.c:27
#1 0x0000562325720ec7 in __gettimeofday ()
at ../sysdeps/unix/sysv/linux/x86/gettimeofday.c:40
#2 0x00007fdb915f8f50 in elf_machine_rela (skip_ifunc=<optimized out>,
reloc_addr_arg=<optimized out>, version=<optimized out>,
sym=<optimized out>, reloc=0x7fdb913d2de8, map=0x7fdb9180fbb0)
at ../sysdeps/x86_64/dl-machine.h:314
#3 elf_dynamic_do_Rela (skip_ifunc=<optimized out>, lazy=<optimized out>,
nrelative=<optimized out>, relsize=<optimized out>,
reladdr=<optimized out>, map=0x7fdb9180fbb0) at do-rel.h:137
#4 _dl_relocate_object (scope=<optimized out>, reloc_mode=<optimized out>,
consider_profiling=<optimized out>, consider_profiling@entry=0)
at dl-reloc.c:259
#5 0x00007fdb915f0051 in dl_main (phdr=<optimized out>,
phnum=<optimized out>, user_entry=<optimized out>, auxv=<optimized out>)
at rtld.c:2066
#6 0x00007fdb9160591f in _dl_sysdep_start (
start_argptr=start_argptr@entry=0x7ffe43447b20,
dl_main=dl_main@entry=0x7fdb915ed9a0 <dl_main>) at ../elf/dl-sysdep.c:249
#7 0x00007fdb915f0f68 in _dl_start_final (arg=0x7ffe43447b20) at rtld.c:305
#8 _dl_start (arg=0x7ffe43447b20) at rtld.c:411
#9 0x00007fdb915eccd8 in _start () from /lib64/ld-linux-x86-64.so.2
#10 0x0000000000000001 in ?? ()
#11 0x00007ffe434493a3 in ?? ()
#12 0x0000000000000000 in ?? ()
However, no crash when running any other dynamically linked program (you have
to create an empty file /opt/eset/esets/sbin/esets_daemon first), e.g.:
LD_DEBUG=all LD_PRELOAD=./libesets_pac.so /bin/uname -r > uname.txt 2>&1
Full details and outputs attached. Our preload library is built on Debian 4.0
for compatibility reasons.
Does someone know what's going on there?
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20972] ld-linux crashing with SIGSEGV when preloading libesets_pac.so to libc.so
Date: Thu, 15 Dec 2016 14:36:00 -0000
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--- Comment #1 from Matej Krizan <krizan at eset dot sk> ---
Created attachment 9701
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Subject: [Bug dynamic-link/20972] ld-linux crashing with SIGSEGV when preloading libesets_pac.so to libc.so
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--- Comment #2 from Matej Krizan <krizan at eset dot sk> ---
Created attachment 9702
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uname output
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Subject: [Bug dynamic-link/20972] ld-linux crashing with SIGSEGV when preloading libesets_pac.so to libc.so
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https://sourceware.org/bugzilla/show_bug.cgi?id=20972
Matej Krizan <krizan at eset dot sk> changed:
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--- Comment #3 from Matej Krizan <krizan at eset dot sk> ---
Created attachment 9704
--> https://sourceware.org/bugzilla/attachment.cgi?id=9704&action=edit
64bit preload library
From the 4.0.82.0 package
https://download.eset.com/com/eset/apps/home/eav/linux/latest/eset_nod32av_64bit_en.linux
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>From glibc-bugs-return-35323-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 18:28:13 2016
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Subject: [Bug dynamic-link/20972] ld-linux crashing with SIGSEGV when preloading libesets_pac.so to libc.so
Date: Thu, 15 Dec 2016 18:28:00 -0000
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Matej Krizan <krizan at eset dot sk> changed:
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>From glibc-bugs-return-35324-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 22:07:32 2016
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From: "triegel at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20973] New: robust mutexes: Lost wake-ups
Date: Thu, 15 Dec 2016 22:07:00 -0000
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Bug ID: 20973
Summary: robust mutexes: Lost wake-ups
Product: glibc
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: triegel at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Assume that Thread 1 waits to acquire a robust mutex using futexes to block
(and thus sets the FUTEX_WAITERS flag), and is unblocked when this mutex is
released. If Thread 2 concurrently acquires the lock and is killed, Thread 1
can recover from the died owner but fail to restore the FUTEX_WAITERS flag.
This can lead to a Thread 3 that also blocked using futexes at the same time as
Thread 1 to not get woken up because FUTEX_WAITERS is not set anymore.
This has been previously reported here:
https://bugzilla.redhat.com/show_bug.cgi?id=1401665
That BZ also contains a testcase.
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>From glibc-bugs-return-35325-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 23:33:56 2016
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug locale/20974] New: bs_BA: yesexpr/noexpr regexes accept any character
Date: Thu, 15 Dec 2016 23:33:00 -0000
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Bug ID: 20974
Summary: bs_BA: yesexpr/noexpr regexes accept any character
Product: glibc
Version: unspecified
Status: NEW
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Priority: P2
Component: locale
Assignee: vapier at gentoo dot org
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as reported by mail@ambraspace.com:
$ LC_ALL=bs_BA.UTF-8 locale -c LC_MESSAGES -k
LC_MESSAGES
yesexpr="^[+1dDyY]*."
noexpr="^[-0nN]*."
the use of the * and . means the regex will accept any character. they should
be dropped entirely.
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>From glibc-bugs-return-35326-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 23:36:30 2016
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Subject: [Bug libc/20338] Parsing of /etc/gshadow can return bad pointers causing segfaults in applications
Date: Thu, 15 Dec 2016 23:36:00 -0000
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fedora.dm0 at gmail dot com changed:
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CC| |fedora.dm0 at gmail dot com
--- Comment #1 from fedora.dm0 at gmail dot com ---
Created attachment 9705
--> https://sourceware.org/bugzilla/attachment.cgi?id=9705&action=edit
gshadow: Sync fgetsgent_r.c with grp/fgetgrent_r.c
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>From glibc-bugs-return-35327-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 23:53:32 2016
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/20947] fmax, fmin sNaN handling
Date: Thu, 15 Dec 2016 23:53:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 0a2546cdaa4284cc6ed6af06835fd858ba341838 (commit)
from 67f779f1ead0bf38d1ca0e882e20c7ce0c03c204 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0a2546cdaa4284cc6ed6af06835fd858ba341838
commit 0a2546cdaa4284cc6ed6af06835fd858ba341838
Author: Joseph Myers <joseph@codesourcery.com>
Date: Thu Dec 15 23:52:18 2016 +0000
Fix x86, x86_64 fmax, fmin sNaN handling, add tests (bug 20947).
Various fmax and fmin function implementations mishandle sNaN
arguments:
(a) When both arguments are NaNs, the return value should be a qNaN,
but sometimes it is an sNaN if at least one argument is an sNaN.
(b) Under TS 18661-1 semantics, if either argument is an sNaN then the
result should be a qNaN (whereas if one argument is a qNaN and the
other is not a NaN, the result should be the non-NaN argument).
Various implementations treat sNaNs like qNaNs here.
This patch fixes the x86 and x86_64 versions (ignoring float and
double for 32-bit x86 given the inability to reliably avoid the sNaN
turning into a qNaN before it gets to the called function). Tests of
sNaN inputs to these functions are added.
Note on architecture versions I haven't changed for this issue:
AArch64 already gets this right (it uses a hardware instruction with
the correct semantics for both quiet and signaling NaNs) and does not
need changes. It's possible Alpha, IA64, SPARC might need changes
(this would be shown by the testsuite if so).
Tested for x86_64 and x86 (both i686 and i586 builds, to cover the
different x86 implementations).
[BZ #20947]
* sysdeps/i386/fpu/s_fmaxl.S (__fmaxl): Add the arguments when
either is a signaling NaN.
* sysdeps/i386/fpu/s_fminl.S (__fminl): Likewise. Make code
follow fmaxl more closely.
* sysdeps/i386/i686/fpu/s_fmaxl.S (__fmaxl): Add the arguments
when either is a signaling NaN.
* sysdeps/i386/i686/fpu/s_fminl.S (__fminl): Likewise.
* sysdeps/x86_64/fpu/s_fmax.S (__fmax): Likewise.
* sysdeps/x86_64/fpu/s_fmaxf.S (__fmaxf): Likewise.
* sysdeps/x86_64/fpu/s_fmaxl.S (__fmaxl): Likewise.
* sysdeps/x86_64/fpu/s_fmin.S (__fmin): Likewise.
* sysdeps/x86_64/fpu/s_fminf.S (__fminf): Likewise.
* sysdeps/x86_64/fpu/s_fminl.S (__fminl): Likewise.
* math/libm-test.inc (fmax_test_data): Add tests of sNaN inputs.
(fmin_test_data): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 19 ++++++++++
math/libm-test.inc | 72 +++++++++++++++++++++++++++++++++++++++
sysdeps/i386/fpu/s_fmaxl.S | 30 +++++++++++++++-
sysdeps/i386/fpu/s_fminl.S | 40 ++++++++++++++++++---
sysdeps/i386/i686/fpu/s_fmaxl.S | 29 +++++++++++++---
sysdeps/i386/i686/fpu/s_fminl.S | 27 +++++++++++++--
sysdeps/x86_64/fpu/s_fmax.S | 19 ++++++++++-
sysdeps/x86_64/fpu/s_fmaxf.S | 19 ++++++++++-
sysdeps/x86_64/fpu/s_fmaxl.S | 29 +++++++++++++---
sysdeps/x86_64/fpu/s_fmin.S | 19 ++++++++++-
sysdeps/x86_64/fpu/s_fminf.S | 19 ++++++++++-
sysdeps/x86_64/fpu/s_fminl.S | 27 +++++++++++++--
12 files changed, 322 insertions(+), 27 deletions(-)
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>From glibc-bugs-return-35328-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 15 23:54:31 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug math/20947] fmax, fmin sNaN handling
Date: Thu, 15 Dec 2016 23:54:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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--- Comment #4 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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>From glibc-bugs-return-35329-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 16 01:09:34 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/19402] Deadlock with robust shared mutex and asynchronous termination
Date: Fri, 16 Dec 2016 01:09:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
I can reproduce this issue with a cleaned up testcase that uses C11 atomics to
avoid the data races in the orignal test case.
Torvald Riegel, Florian Weimer and I discussed this and the final analysis is
that this is clearly a flaw in the glibc handling of the robust list.
The sequence of events isn't even that complicated.
P1
-> set_robust_list
-> setup shared mapping, setup shared mutex
-> lock mutex (eunqueues it onto the robust list)
-> fork child
-> unlock mutex (dequeues it from the list)
Note: The deuque here removes the mutex from the robust list copy in the
parent, but he child's copy of the robust list head is unchanged and pointing
to the mutex. However, that mutex now has it's own ->next pointer set to null
so it is no longer a valid list according to the kernel.
P2
-> locks mutex (owner not dead, doesn't own it, so locks it)
P1
-> Kills P2
Kernel
-> Inspects P2's robust list, find it contains a head that points to a mutex
that points to NULL. This is a dangling list and the cleanup is ignored.
P1
-> locks mutex (and deadlocks).
At this point no recovery is possible.
The key issue is that the mutex itself, in shared memory, is part of the
circular linked list itself.
The robust list head itself is stored in the process/thread-local storage, but
the rest of the list is shared, made up of the mutexes that are involved in the
list.
Therefore P1 and P2 share parts of their own robust lists via the shared
mutex's afer the fork. This is a flaw really because the mutexes can only be
owned by one thread at a time.
When P2 is forked we need to do some kind of cleanup of the head of the list,
probably clearing head (linking it back to itself to make an empty list) just
after forking.
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>From glibc-bugs-return-35330-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 16 01:26:06 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/14485] File corruption race condition in robust mutex unlocking
Date: Fri, 16 Dec 2016 01:26:00 -0000
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--- Comment #12 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to mail from comment #11)
> Could somebody summarise for me as somebody not familiar with the glibc
> internals, what is the status of this bug, and in which cases am I safe to
> use a robust mutex in a shared memory setup? Thanks!
The problem is with the reuse of memory and waiting for the dying threads to
finish their cleanup of the robust mutex.
You must not unmap the memory until the dying threads have had a chance to do
their cleanup.
Re-iterating what Rich says in comment #8:
https://sourceware.org/bugzilla/show_bug.cgi?id=14485#c8
(a) Use a distinct mapping for each user/thread that uses the shared memory
robust mutex and which also wants to unmap that memory. This way after everyone
who uses the robust mutex removes their mappings, the dying thread's mapping
remains as it is being shutdown and is removed last after it's own cleanup is
done. Only after that point will anything reuse that memory.
(b) Use some kind of process-local synchronization (say sempahore) to wait for
all users of the object to be done before you unmap the memory. The dying
thread would count as a user, so you would not be able to unmap the memory yet,
and that way it would have a chance to run it's own robust mutex cleanup. You
might also use pthread_tryjoin_np to see if the dying thread is cleaned up by
the kernel yet, since that would indicate it was done and you could recover the
use count.
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>From glibc-bugs-return-35331-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 16 01:49:07 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/20975] New: Deferred cancellation triggers in __check_pf and looses lock leading to deadlock.
Date: Fri, 16 Dec 2016 01:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20975
Bug ID: 20975
Summary: Deferred cancellation triggers in __check_pf and
looses lock leading to deadlock.
Product: glibc
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
In sysdeps/unix/sysv/linux/check_pf.c
The following path can cause deferred cancellation to trigger:
__check_pf -> make_request -> __sendto / __recvmsg.
296 void
297 attribute_hidden
298 __check_pf (bool *seen_ipv4, bool *seen_ipv6,
299 struct in6addrinfo **in6ai, size_t *in6ailen)
300 {
301 *in6ai = NULL;
302 *in6ailen = 0;
303
304 struct cached_data *olddata = NULL;
305 struct cached_data *data = NULL;
306
307 __libc_lock_lock (lock);
Once cancellation happens for one thread, the above lock is locked, and
deadlocks any other calls to __check_pf.
We need to push a cancellation cleanup handler to unlock the lock.
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Subject: [Bug libc/20975] Deferred cancellation triggers in __check_pf and looses lock leading to deadlock.
Date: Fri, 16 Dec 2016 02:38:00 -0000
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----------------------------------------------------------------------------
CC| |rwindz0 at gmail dot com
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>From glibc-bugs-return-35333-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 16 10:57:08 2016
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From: "triegel at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/14485] File corruption race condition in robust mutex unlocking
Date: Fri, 16 Dec 2016 10:57:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=14485
--- Comment #13 from Torvald Riegel <triegel at redhat dot com> ---
(In reply to Carlos O'Donell from comment #12)
> (In reply to mail from comment #11)
> > Could somebody summarise for me as somebody not familiar with the glibc
> > internals, what is the status of this bug, and in which cases am I safe to
> > use a robust mutex in a shared memory setup? Thanks!
>
> The problem is with the reuse of memory and waiting for the dying threads to
> finish their cleanup of the robust mutex.
>
> You must not unmap the memory until the dying threads have had a chance to
> do their cleanup.
>
> Re-iterating what Rich says in comment #8:
> https://sourceware.org/bugzilla/show_bug.cgi?id=14485#c8
>
> (a) Use a distinct mapping for each user/thread that uses the shared memory
> robust mutex and which also wants to unmap that memory. This way after
> everyone who uses the robust mutex removes their mappings, the dying
> thread's mapping remains as it is being shutdown and is removed last after
> it's own cleanup is done. Only after that point will anything reuse that
> memory.
>
> (b) Use some kind of process-local synchronization (say sempahore) to wait
> for all users of the object to be done before you unmap the memory. The
> dying thread would count as a user, so you would not be able to unmap the
> memory yet, and that way it would have a chance to run it's own robust mutex
> cleanup. You might also use pthread_tryjoin_np to see if the dying thread is
> cleaned up by the kernel yet, since that would indicate it was done and you
> could recover the use count.
Note that what Carlos said is a workaround for the problem that glibc robust
mutexes do not currently satisfy the POSIX mutex destruction requirements. I
think glibc should eventually satisfy those requirements, which is a more
general problem than just being related to unmapping memory.
Fixing this bug will require additional support in the kernel, so it will
probably take some more time until we get there.
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nis/20978] New: strlen on null pointer on nss_nisplus
Date: Fri, 16 Dec 2016 16:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20978
Bug ID: 20978
Summary: strlen on null pointer on nss_nisplus
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: nis
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
CC: kukuk at suse dot de
Target Milestone: ---
glibc currently fails to build with mainline GCC with an error:
nss_nisplus/nisplus-alias.c: In function '_nss_nisplus_getaliasbyname_r':
nss_nisplus/nisplus-alias.c:303:39: error: '%s' directive argument is null
[-Werror=format-length=]
snprintf (buf, sizeof (buf), "[name=%s],%s", name, tablename_val);
^~
nss_nisplus/nisplus-alias.c:300:12: error: argument 1 null where non-null
expected [-Werror=nonnull]
char buf[strlen (name) + 9 + tablename_len];
^~~~~~~~~~~~~
In file included from ../include/string.h:54:0,
from ../sysdeps/generic/hp-timing-common.h:40,
from ../sysdeps/x86_64/hp-timing.h:38,
from ../include/libc-internal.h:7,
from ../sysdeps/x86_64/nptl/tls.h:29,
from ../sysdeps/x86_64/atomic-machine.h:20,
from ../include/atomic.h:50,
from nss_nisplus/nisplus-alias.c:19:
../string/string.h:394:15: note: in a call to function 'strlen' declared here
extern size_t strlen (const char *__s)
^~~~~~
This error appears correct. The code in question looks like:
if (name != NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
char buf[strlen (name) + 9 + tablename_len];
That is, the strlen call is only ever reached if name is a NULL pointer. I
don't know what's actually intended (a comparison == NULL instead of != NULL?),
but the code as written is nonsensical.
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Subject: [Bug nis/20978] strlen on null pointer in nss_nisplus
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|strlen on null pointer on |strlen on null pointer in
|nss_nisplus |nss_nisplus
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To: glibc-bugs@sourceware.org
Subject: [Bug nis/20978] strlen on null pointer in nss_nisplus
Date: Fri, 16 Dec 2016 16:46:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
The original code
if (name == NULL || strlen(name) > 8)
return NSS_STATUS_NOTFOUND;
else
was changed into
if (name != NULL || strlen(name) <= 8)
and things went downhill.
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>From glibc-bugs-return-35337-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 16 19:24:36 2016
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From: "vapier at gentoo dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20864] iconv: cp936 missing single-byte euro sign (0x80, U+20AC), not same as GBK
Date: Fri, 16 Dec 2016 19:24:00 -0000
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--- Comment #6 from Mike Frysinger <vapier at gentoo dot org> ---
(In reply to Florian Weimer from comment #5)
thanks! sorry for that. i have some local tests i run for locale definitions,
but forgot that charmaps have more extensive tests.
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>From glibc-bugs-return-35338-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 17 08:38:19 2016
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From: "sourceware at cabine dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20116] use after free in pthread_create
Date: Sat, 17 Dec 2016 08:38:00 -0000
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André Cruz <sourceware at cabine dot org> changed:
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--- Comment #8 from André Cruz <sourceware at cabine dot org> ---
It seems I'm hitting this bug with systemd crashing when creating a lot of
short lived sshd tbreads:
https://github.com/systemd/systemd/issues/2558
https://github.com/systemd/systemd/issues/4869
Since there seems be a patch, is there something wrong with it? Will it ever be
applied?
Thank you.
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>From glibc-bugs-return-35339-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 17 15:17:08 2016
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Subject: [Bug nptl/20116] use after free in pthread_create
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Zbigniew Jędrzejewski-Szmek <zbyszek at in dot waw.pl> changed:
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>From glibc-bugs-return-35340-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 17 20:27:20 2016
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From: "woutershep at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/19816] [PATCH] Fix stack protector detection.
Date: Sat, 17 Dec 2016 20:27:00 -0000
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Wouter van Kesteren <woutershep at gmail dot com> changed:
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--- Comment #1 from Wouter van Kesteren <woutershep at gmail dot com> ---
This is incredibly demotivating and i doubt i will attempt to contribute to
glibc in the future because of it. Thanks for nothing.
https://sourceware.org/git/?p=glibc.git;a=commit;h=c7409aded44634411a19b0b7178b7faa237835e6
*** This bug has been marked as a duplicate of bug 20662 ***
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>From glibc-bugs-return-35341-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 17 20:27:20 2016
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Subject: [Bug libc/20662] checking whether x86_64-pc-linux-gnu-gcc implicitly enables -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
Date: Sat, 17 Dec 2016 20:27:00 -0000
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Wouter van Kesteren <woutershep at gmail dot com> changed:
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--- Comment #12 from Wouter van Kesteren <woutershep at gmail dot com> ---
*** Bug 19816 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-35342-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 17 22:23:53 2016
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From: "bryanh@giraffe-data.com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/20980] New: CFLAGS environment variable replaces vital options
Date: Sat, 17 Dec 2016 22:23:00 -0000
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Bug ID: 20980
Summary: CFLAGS environment variable replaces vital options
Product: glibc
Version: 2.23
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I had trouble using CFLAGS.
It's customary for a build system to add the value of the CFLAGS environment
variable to various compile commands. In the case of GNU libc, the INSTALL
file says CFLAGS is for setting optimization options, but also inconsistently
suggests adding options such as -mcpu to CFLAGS.
In practice, the make files use CFLAGS for -O2 and -g, where appropriate, and
any value of the CFLAGS environment variable overrides and gets added to the
compile commands.
And here's an important fact: -O is not optional. At least one file refuses to
compile unless you're optimizing.
I think the make files should just append the CFLAGS value to their -g and -O2,
so that a user setting doesn't implicitly delete those options (but can still
override them).
Barring that, I think the INSTALL file should contain detailed instructions on
what you have to include in CFLAGS if you set it.
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>From glibc-bugs-return-35343-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Dec 18 14:36:56 2016
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Subject: [Bug libc/20386] assert (X = 0) does not result in GCC warning
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in:
commit e077349ce589466eecd47213db4fae6b80ec18c4
Author: Jim Meyering <meyering@fb.com>
Date: Thu Jun 5 10:42:05 2014 -0700
assert.h: allow gcc to detect assert(a = 1) errors
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>From glibc-bugs-return-35344-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Dec 18 22:55:23 2016
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Subject: [Bug build/20518] Compilation Fails on x86_64 when ssse3 / avx is enabled and _FORTIFY_SOURCE is not set
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Wouter van Kesteren <woutershep at gmail dot com> changed:
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--- Comment #4 from Wouter van Kesteren <woutershep at gmail dot com> ---
I can reproduce but only WITH --enable-bind-now, bug does not show here with
--disable-bind-now (default). Florian did you also try it with
--enable-bind-now?
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>From glibc-bugs-return-35345-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 19 07:31:58 2016
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Subject: [Bug build/20518] Compilation Fails on x86_64 when ssse3 / avx is enabled and _FORTIFY_SOURCE is not set
Date: Mon, 19 Dec 2016 07:31:00 -0000
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Wouter van Kesteren from comment #4)
> I can reproduce but only WITH --enable-bind-now, bug does not show here with
> --disable-bind-now (default). Florian did you also try it with
> --enable-bind-now?
I still cannot reproduce this. How do you configure glibc? How do you invoke
make?
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>From glibc-bugs-return-35346-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 19 16:36:09 2016
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/20980] CFLAGS environment variable replaces vital options
Date: Mon, 19 Dec 2016 16:36:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
This is (at most) a documentation issue. Processor etc. options need to
be part of CC; CFLAGS is for options that can be replaced or omitted for
particular parts of the build.
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Subject: [Bug string/20971] powerpc64/power7 memchr overflows internal pointer check
Date: Mon, 19 Dec 2016 18:06:00 -0000
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----------------------------------------------------------------------------
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--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by b224637.
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Subject: [Bug nptl/20973] robust mutexes: Lost wake-ups
Date: Mon, 19 Dec 2016 19:13:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 353683a22ed8a493a6bd1d78d63e144bc3e85d2f (commit)
from da16c9b524908fe0353efc4af8eab6a5ad5ea50b (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=353683a22ed8a493a6bd1d78d63e144bc3e85d2f
commit 353683a22ed8a493a6bd1d78d63e144bc3e85d2f
Author: Torvald Riegel <triegel@redhat.com>
Date: Thu Dec 15 16:06:28 2016 +0100
Robust mutexes: Fix lost wake-up.
Assume that Thread 1 waits to acquire a robust mutex using futexes to
block (and thus sets the FUTEX_WAITERS flag), and is unblocked when this
mutex is released. If Thread 2 concurrently acquires the lock and is
killed, Thread 1 can recover from the died owner but fail to restore the
FUTEX_WAITERS flag. This can lead to a Thread 3 that also blocked using
futexes at the same time as Thread 1 to not get woken up because
FUTEX_WAITERS is not set anymore.
The fix for this is to ensure that we continue to preserve the
FUTEX_WAITERS flag whenever we may have set it or shared it with another
thread. This is the same requirement as in the algorithm for normal
mutexes, only that the robust mutexes need additional handling for died
owners and thus preserving the FUTEX_WAITERS flag cannot be done just in
the futex slowpath code.
[BZ #20973]
* nptl/pthread_mutex_lock.c (__pthread_mutex_lock_full): Fix lost
wake-up in robust mutexes.
* nptl/pthread_mutex_timedlock.c (pthread_mutex_timedlock): Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 7 +++++++
nptl/pthread_mutex_lock.c | 15 +++++++++++++--
nptl/pthread_mutex_timedlock.c | 14 ++++++++++++--
3 files changed, 32 insertions(+), 4 deletions(-)
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Subject: [Bug nptl/19402] Deadlock with robust shared mutex and asynchronous termination
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Subject: [Bug nptl/19004] tst-robust8 fails intermittently on x86_64
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--- Comment #12 from Carlos O'Donell <carlos at redhat dot com> ---
Even with the fix for bug 20973 I still saw an intermittent hang in
tst-robust8.
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Subject: [Bug nptl/20973] robust mutexes: Lost wake-ups
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Just noting that even with this fix we still have intermittent hangs in
tst-robust8 (bug 19004), but that's to be expected since we haven't fixed all
the issues.
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Subject: [Bug localedata/20664] Unexpected collation in en_US.UTF-8, different to ICU CLDR
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Carlos O'Donell <carlos at redhat dot com> changed:
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Subject: [Bug nptl/20973] robust mutexes: Lost wake-ups
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Torvald Riegel <triegel at redhat dot com> changed:
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--- Comment #3 from Torvald Riegel <triegel at redhat dot com> ---
This particular bug is now fixed upstream, though as Carlos notes, there are
more in this space.
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Subject: [Bug localedata/20664] Unexpected collation in en_US.UTF-8, different to ICU CLDR
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--- Comment #4 from keld at keldix dot com <keld at keldix dot com> ---
On Mon, Oct 03, 2016 at 11:10:56PM +0000, carlos at redhat dot com wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=20664
>
> Carlos O'Donell <carlos at redhat dot com> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|UNCONFIRMED |WAITING
> Last reconfirmed| |2016-10-03
> CC| |carlos at redhat dot com
> Ever confirmed|0 |1
>
> --- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
> Going forward we want glibc to track CLDR more closely. Therefore if you can
> find a glibc version that exhibits meaningful difference between CLDR, then
> please file a report, like this one.
>
> However, you have too many moving pieces for us to validate this, for example
> sort is not a good test case because it might itself not use glibc's collation
> tables for sorting.
>
> Can you construct a test case with strcoll that exhibits this problem?
I do not think we should aim at following CLDR closely, but we should minimize
differences. I actually think we should get CLDR to follow us more closely:-)
Bestregards
keld
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Subject: [Bug nptl/20116] use after free in pthread_create
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--- Comment #9 from Johannes Bauer <dfnsonfsduifb at gmx dot de> ---
I agree, this bug is annoying as hell and still affecting me, it's marked
critical and has de-facto been confirmed, yet the status is still
"UNCONFIRMED".
Seems like a case of acute Drepper syndrome to me, i.e., the unwillingness or
inability to listen to customer needs. Apparently, fixing crashing applications
left and right doesn't seem to be a high priority for glibc devs.
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-20
Assignee|unassigned at sourceware dot org |carlos at redhat dot com
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #21 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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from 2908885c822eb43ffa2cdd67e0464e6d35afaf53 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fcd942370ff863f67f971e255d30fb9c1f127607
commit fcd942370ff863f67f971e255d30fb9c1f127607
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 12:04:12 2016 +0100
x86_64: tst-quad1pie, tst-quad2pie: compile with -fPIE [BZ #7065]
With stack protection enabled, these files have external symbol
references for the first time, so the fact that they are not compiled
with -fPIE and are then linked into a -pie binary starts to hurt.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
sysdeps/x86_64/Makefile | 3 +++
2 files changed, 9 insertions(+), 0 deletions(-)
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From: "triegel at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20985] New: robust mutexes: lowlevelrobustlock assembly on x86 blocks on wrong condition
Date: Wed, 21 Dec 2016 12:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20985
Bug ID: 20985
Summary: robust mutexes: lowlevelrobustlock assembly on x86
blocks on wrong condition
Product: glibc
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: triegel at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
lll_robust_unlock on i386 and x86_64 first sets the futex word to
FUTEX_WAITERS|0 before calling __LLL_unlock_wake, which will set the futex word
to 0. If the thread is killed between these steps, then the futex word will be
FUTEX_WAITERS|0, and the kernel (at least current upstream) will not set it to
FUTEX_OWNER_DIED|FUTEX_WAITERS because 0 is not equal to the TID of the crashed
thread.
The lll_robust_lock assembly code on i386 and x86_64 is not prepared to deal
with this case because the fastpath tries to only CAS 0 to TID and not
FUTEX_WAITERS|0 to TID; the slowpath simply waits until it can CAS 0 to TID or
the futex_word has the FUTEX_OWNER_DIED bit set.
The reproducer in bug 19402 can trigger this behavior (if the core problem of
19402 is fixed).
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>From glibc-bugs-return-35363-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 21 12:36:40 2016
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Subject: [Bug nptl/20973] robust mutexes: Lost wake-ups
Date: Wed, 21 Dec 2016 12:36:00 -0000
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What |Removed |Added
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>From glibc-bugs-return-35364-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 21 14:54:37 2016
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From: "jsm28 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nis/20987] New: NIS+ unbounded stack allocations
Date: Wed, 21 Dec 2016 14:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20987
Bug ID: 20987
Summary: NIS+ unbounded stack allocations
Product: glibc
Version: 2.24
Status: NEW
Severity: normal
Priority: P2
Component: nis
Assignee: unassigned at sourceware dot org
Reporter: jsm28 at gcc dot gnu.org
CC: kukuk at suse dot de
Target Milestone: ---
The nss_nisplus code contains various VLAs with a size based on the length of a
string passed in, and nothing obvious to bound that length.
Specifically, this bug is about the following VLAs in nss_nisplus (there are
others as well which may or may not have bounded lengths):
nisplus-alias.c: char buf[strlen (name) + 9 + tablename_len];
nisplus-ethers.c: char buf[strlen (name) + 9 + tablename_len];
nisplus-grp.c: char buf[strlen (name) + 9 + grp_tablename_len];
nisplus-hosts.c: char buf[strlen (name) + 10 + tablename_len];
nisplus-initgroups.c: char buf[strlen (user) + 12 + grp_tablename_len];
nisplus-netgrp.c: char buf[strlen (group) + 25];
nisplus-network.c: char buf[strlen (name) + 10 + tablename_len];
nisplus-proto.c: char buf[strlen (name) + 10 + tablename_len];
nisplus-pwd.c: char buf[strlen (name) + 9 + pwd_tablename_len];
nisplus-rpc.c: char buf[strlen (name) + 10 + tablename_len];
nisplus-service.c: char buf[17 + 3 * sizeof (int) + strlen (protocol) +
tablename_len];
nisplus-spwd.c: char buf[strlen (name) + 9 + pwd_tablename_len];
(another instance in nisplus-service.c is bug 17913) and also for
nis_table.c: char *cptr = strdupa (name);
in __create_ib_request, called from nis_list which is both a public interface
in libnsl (I don't know if it's relevant for NIS or only for NIS+) as well as
being called with the strings constructed in the VLA buffers above.
I have not ascertained whether all the above (or the case in bug 17913) are in
fact reachable with strings of unbounded length, or whether such strings might
cross a privilege boundary and so render this a security issue.
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>From glibc-bugs-return-35365-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 21 17:23:14 2016
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/7065] Support building glibc with -fstack-protector or -fstack-protector-all
Date: Wed, 21 Dec 2016 17:23:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=7065
--- Comment #22 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, fw/stack-protector has been created
at a547a051a93361a9ec4edf283bcebea66481fca8 (commit)
- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a547a051a93361a9ec4edf283bcebea66481fca8
commit a547a051a93361a9ec4edf283bcebea66481fca8
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:01:30 2016 +0100
Enable -fstack-protector=* when requested by configure [BZ #7065]
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=299613826cccad6047f3bb4b9b2db97b9c899273
commit 299613826cccad6047f3bb4b9b2db97b9c899273
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:01:09 2016 +0100
Do not stack-protect sigreturn stubs [BZ #7065]
These are called from the kernel with the stack at a carefully-
chosen location so that the stack frame can be restored: they must not
move the stack pointer lest garbage be restored into the registers.
We explicitly inhibit protection for SPARC and for signal/sigreturn.c:
other arches either define their sigreturn stubs in .S files, or (i386,
x86_64, mips) use macros expanding to top-level asm blocks and explicit
labels in the text section to mock up a "function" without telling the
compiler that one is there at all.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=59780db53ac8f56a492ce2949159939865cefad6
commit 59780db53ac8f56a492ce2949159939865cefad6
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:01:00 2016 +0100
Drop explicit stack-protection of pieces of the system [BZ #7065]
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8ac7f200cb4478e55b746c1b7739a2eb0dd58541
commit 8ac7f200cb4478e55b746c1b7739a2eb0dd58541
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:00:47 2016 +0100
Link a non-libc-using test with -fno-stack-protector [BZ #7065]
This test cannot reference __stack_chk_fail because it is not linked
with libc at all.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a8c94a367800c222a068dfa56a696437bbf4b32d
commit a8c94a367800c222a068dfa56a696437bbf4b32d
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 15:58:22 2016 +0100
PLT avoidance for __stack_chk_fail [BZ #7065]
Add a hidden __stack_chk_fail_local alias to libc.so,
and make sure that on targets which use __stack_chk_fail,
this does not introduce a local PLT reference into libc.so.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=52c67c89daad240cfa76b39a4827ee6d4dada510
commit 52c67c89daad240cfa76b39a4827ee6d4dada510
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:00:22 2016 +0100
Work even with compilers whcih enable -fstack-protector by default [BZ
#7065]
With all the machinery we just added, we can easily arrange to work even
when the compiler passes in -fstack-protector automatically: all the
necessary bits of glibc are always compiled with -fno-stack-protector
now.
So tear out the check in configure, and add appropriate calls to
-fno-stack-protector in tests that need them (largely those that use
-nostdlib), since we don't yet have a __stack_chk_fail that those
tests can rely upon. (GCC often provides one, but we cannot rely on
this, especially not when bootstrapping.)
When stack protection is disabled, explicitly pass -fno-stack-protector
to everything, to stop a compiler hacked to enable it from inserting
calls to __stack_chk_fail via the PLT in every object file.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ceaed0d1f8713b9de5bdeda919525c8fcd61d89a
commit ceaed0d1f8713b9de5bdeda919525c8fcd61d89a
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:00:13 2016 +0100
Ignore __stack_chk_fail* in the rtld mapfile computation [BZ #7065]
The previous commit prevented rtld itself from being built with
-fstack-protector, but this is not quite enough. We identify which
objects belong in rtld via a test link and analysis of the resulting
mapfile. That link is necessarily done against objects that are
stack-protected, so drags in __stack_chk_fail_local, __stack_chk_fail,
and all the libc and libio code they use.
To stop this happening, use --defsym in the test librtld.map-production
link to force the linker to predefine these two symbols (to 0, but it
could be to anything). (In a real link, this would of course be
catastrophic, but these object files are never used for anything else.)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5abe578c24fce56130b9a44362907a83d076a06d
commit 5abe578c24fce56130b9a44362907a83d076a06d
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:00:03 2016 +0100
Compile the dynamic linker without stack protection [BZ #7065]
Also compile corresponding routines in the static libc.a with the same
flag.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5ab1993e7799af49caacc86f1e3a4d335b2f3420
commit 5ab1993e7799af49caacc86f1e3a4d335b2f3420
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 15:59:47 2016 +0100
Disable stack protector in early static initialization [BZ #7065]
The startup code in csu/, and the brk and sbrk functions are
needed very early in initialization of a statically-linked program,
before the stack guard is initialized; TLS initialization also uses
memcpy, which cannot overrun its own stack. Mark all of these as
-fno-stack-protector.
We also finally introduce @libc_cv_ssp@ and @no_stack_protector@, both
substituted by the configury changes made earlier, to detect the case
when -fno-stack-protector is supported by the compiler, and
unconditionally pass it in when this is the case, whether or not
--enable-stack-protector is passed to configure. (This means that
it'll even work when the compiler's been hacked to pass
-fstack-protector by default, unless the hackage is so broken that
it does so in a way that is impossible to override.)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=25becbb762c7a9aff36a389f2d63dcb5f7fecb7a
commit 25becbb762c7a9aff36a389f2d63dcb5f7fecb7a
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 15:59:32 2016 +0100
Do not stack-protect ifunc resolvers [BZ #7065]
When dynamically linking, ifunc resolvers are called before TLS is
initialized, so they cannot be safely stack-protected.
We avoid disabling stack-protection on large numbers of files by
using __attribute__ ((__optimize__ ("-fno-stack-protector")))
to turn it off just for the resolvers themselves. (We provide
the attribute even when statically linking, because we will later
use it elsewhere too.)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8f26f41f502828d18ebe18adaf7e0e161b6005f9
commit 8f26f41f502828d18ebe18adaf7e0e161b6005f9
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 16:58:42 2016 +0100
Initialize the stack guard earlier when linking statically [BZ #7065]
The address of the stack canary is stored in a per-thread variable,
which means that we must ensure that the TLS area is intialized before
calling any -fstack-protector'ed functions. For dynamically linked
applications, we ensure this (in a later patch) by disabling
-fstack-protector for the whole dynamic linker, but for static
applications, the AT_ENTRY address is called directly by the kernel, so
we must deal with the problem differently.
In static appliations, __libc_setup_tls performs the TCB setup and TLS
initialization, so this commit arranges for it to be called early and
unconditionally. The call (and the stack guard initialization) is
before the DL_SYSDEP_OSCHECK hook, which if set will probably call
functions which are stack-protected (it does on Linux and NaCL too). We
also move apply_irel up, so that we can still safely call functions that
require ifuncs while in __libc_setup_tls (though if stack-protection is
enabled we still have to avoid calling functions that are not
stack-protected at this stage).
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4d3eb50f579a017e8b68f1d28d7de2e026c1b20f
commit 4d3eb50f579a017e8b68f1d28d7de2e026c1b20f
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Wed Dec 21 15:59:03 2016 +0100
Configure support for --enable-stack-protector [BZ #7065]
This adds =all and =strong, with obvious semantics, defaulting to off.
We don't validate the value of the option yet: that's in a later patch.
Nor do we use it for anything at this stage.
We differentiate between 'the compiler understands -fstack-protector'
and 'the user wanted -fstack-protector' so that we can pass
-fno-stack-protector in appropriate places even if the user didn't want
to turn on -fstack-protector for other parts. (This helps us overcome
another existing limitation, that glibc doesn't work with GCCs hacked
to pass in -fstack-protector by default.)
We also arrange to set the STACK_PROTECTOR_LEVEL #define to a value
appropriate for the stack-protection level in use for each file in
particular.
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>From glibc-bugs-return-35366-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 21 19:16:05 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/20664] Unexpected collation in en_US.UTF-8, different to ICU CLDR
Date: Wed, 21 Dec 2016 19:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20664
--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to keld@keldix.com from comment #4)
> On Mon, Oct 03, 2016 at 11:10:56PM +0000, carlos at redhat dot com wrote:
> > https://sourceware.org/bugzilla/show_bug.cgi?id=20664
> > Can you construct a test case with strcoll that exhibits this problem?
>
> I do not think we should aim at following CLDR closely, but we should
> minimize
> differences. I actually think we should get CLDR to follow us more closely:-)
I certainly agree that harmonization between both projects would be a great
goal. Having the best of both projects would be great. While I say "following
CLDR" what I mean is probably more accurate to say "harmonized with CLDR." So I
will endeavour to use such language in the future.
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To: glibc-bugs@sourceware.org
Subject: [Bug nis/20978] strlen on null pointer in nss_nisplus
Date: Wed, 21 Dec 2016 23:45:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f88759ea9bd3c8d8fef28f123ba9767cb0e421a3
commit f88759ea9bd3c8d8fef28f123ba9767cb0e421a3
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 21 23:44:01 2016 +0000
Fix nss_nisplus build with mainline GCC (bug 20978).
glibc build with current mainline GCC fails because
nis/nss_nisplus/nisplus-alias.c contains code
if (name != NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
char buf[strlen (name) + 9 + tablename_len];
producing an error about strlen being called on a pointer that is
always NULL (and a subsequent use of that pointer with a %s format in
snprintf).
As Andreas noted, the bogus conditional comes from a 1997 change:
- if (name == NULL || strlen(name) > 8)
- return NSS_STATUS_NOTFOUND;
- else
+ if (name != NULL || strlen(name) <= 8)
So the intention is clearly to return an error for NULL name.
This patch duly inverts the sense of the conditional. It fixes the
build with GCC mainline, and passes usual glibc testsuite testing for
x86_64. However, I have not tried any actual substantive nisplus
testing, do not have an environment for such testing, and do not know
whether it is possible that strlen (name) or tablename_len might be
large so that the VLA for buf is actually a security issue. However,
if it is a security issue, there are plenty of other similar instances
in the nisplus code (that haven't been hidden by a bogus comparison
with NULL) - and nis_table.c:__create_ib_request uses strdupa on the
string passed to nis_list, so a local fix in the caller wouldn't
suffice anyway (see bug 20987). (Calls to strdupa and other such
macros that use alloca must be considered equally questionable
regarding stack overflow issues as direct calls to alloca and VLA
declarations.)
[BZ #20978]
* nis/nss_nisplus/nisplus-alias.c (_nss_nisplus_getaliasbyname_r):
Compare name == NULL, not name != NULL.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
nis/nss_nisplus/nisplus-alias.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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Subject: [Bug nis/20987] NIS+ unbounded stack allocations
Date: Wed, 21 Dec 2016 23:45:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f88759ea9bd3c8d8fef28f123ba9767cb0e421a3
commit f88759ea9bd3c8d8fef28f123ba9767cb0e421a3
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Dec 21 23:44:01 2016 +0000
Fix nss_nisplus build with mainline GCC (bug 20978).
glibc build with current mainline GCC fails because
nis/nss_nisplus/nisplus-alias.c contains code
if (name != NULL)
{
*errnop = EINVAL;
return NSS_STATUS_UNAVAIL;
}
char buf[strlen (name) + 9 + tablename_len];
producing an error about strlen being called on a pointer that is
always NULL (and a subsequent use of that pointer with a %s format in
snprintf).
As Andreas noted, the bogus conditional comes from a 1997 change:
- if (name == NULL || strlen(name) > 8)
- return NSS_STATUS_NOTFOUND;
- else
+ if (name != NULL || strlen(name) <= 8)
So the intention is clearly to return an error for NULL name.
This patch duly inverts the sense of the conditional. It fixes the
build with GCC mainline, and passes usual glibc testsuite testing for
x86_64. However, I have not tried any actual substantive nisplus
testing, do not have an environment for such testing, and do not know
whether it is possible that strlen (name) or tablename_len might be
large so that the VLA for buf is actually a security issue. However,
if it is a security issue, there are plenty of other similar instances
in the nisplus code (that haven't been hidden by a bogus comparison
with NULL) - and nis_table.c:__create_ib_request uses strdupa on the
string passed to nis_list, so a local fix in the caller wouldn't
suffice anyway (see bug 20987). (Calls to strdupa and other such
macros that use alloca must be considered equally questionable
regarding stack overflow issues as direct calls to alloca and VLA
declarations.)
[BZ #20978]
* nis/nss_nisplus/nisplus-alias.c (_nss_nisplus_getaliasbyname_r):
Compare name == NULL, not name != NULL.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 4 ++++
nis/nss_nisplus/nisplus-alias.c | 2 +-
2 files changed, 5 insertions(+), 1 deletions(-)
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Subject: [Bug nis/20978] strlen on null pointer in nss_nisplus
Date: Wed, 21 Dec 2016 23:46:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.25.
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
Assignee|unassigned at sourceware dot org |carlos at redhat dot com
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
Date: Thu, 22 Dec 2016 05:39:00 -0000
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--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
Fix with regression test posted:
https://www.sourceware.org/ml/libc-alpha/2016-12/msg00859.html
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
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What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2016-12-22
Ever confirmed|0 |1
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Subject: [Bug dynamic-link/14577] dlopen does not unload failed module - second dlopen succeeds
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com,
| |fweimer at redhat dot com
--- Comment #8 from Carlos O'Donell <carlos at redhat dot com> ---
Adding Florian Weimer to the CC since he fixed a few of the cases where objects
that failed to load were not properly unloaded.
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>From glibc-bugs-return-35374-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 17:39:43 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20990] New: Double dlclose() detection contains data race, is unreliable, and can corrupt memory.
Date: Thu, 22 Dec 2016 17:39:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20990
Bug ID: 20990
Summary: Double dlclose() detection contains data race, is
unreliable, and can corrupt memory.
Product: glibc
Version: 2.25
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
In elf/dl-close.c we have this code:
if (__builtin_expect (map->l_direct_opencount, 1) == 0)
_dl_signal_error (0, map->l_name, NULL, N_("shared object not open"));
See my comments here:
https://www.sourceware.org/ml/libc-alpha/2016-12/msg00885.html
This code only works in the recursive dlclose case where you know the struct
link_map remains accessible, otherwise you're touching reused memory, unmapped
memory, and possibly have a data race.
POSIX requires this:
http://pubs.opengroup.org/onlinepubs/9699919799/functions/dlclose.html
~~~
If the referenced symbol table handle was successfully closed, dlclose() shall
return 0. If handle does not refer to an open symbol table handle or if the
symbol table handle could not be closed, dlclose() shall return a non-zero
value. More detailed diagnostic information shall be available through
dlerror().
~~~
The current glibc implementation basically makes a double-dlclose into
undefined behaviour.
This double-close() detection should be removed and replaced with an
implementation that uses IDs instead of a struct link_map*, using the caller's
storage for the void* handle to store an ID that can be used for
double-dlclose() checking.
The downside of using IDs it that you are potentially limited to sizeof(void*)
number of outstanding dlopen's. On 32-bit it doesn't matter because you exhaust
the address space before that number of dlopens. On 64-bit you have an almost
unlimited number of IDs to use.
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>From glibc-bugs-return-35375-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:04:42 2016
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Thu, 22 Dec 2016 23:04:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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is obsolete| |
--- Comment #70 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9709
--> https://sourceware.org/bugzilla/attachment.cgi?id=9709&action=edit
Proposed solution: support alternative month names (version 5)
Here goes the new set of patches.
The main difference is what I realized after comparing how this problem has
been solved in other systems. My idea that alt_mon should be optional was
wrong. Making it obligatory simplifies the code, we don't have to check if a
particular alternative month name is NULL or empty. Locale data are part of
glibc, we are able to provide the data fulfilling our own requirements. For
the languages which do not need two forms of months names this means that
months names must be copied from mon to alt_mon even although both forms are
identical.
Difference between this patch and the one from comment 65: alt_mon locale data
section made obligatory.
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>From glibc-bugs-return-35376-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:08:02 2016
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Thu, 22 Dec 2016 23:08:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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is obsolete| |
--- Comment #71 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9710
--> https://sourceware.org/bugzilla/attachment.cgi?id=9710&action=edit
Provide backward compatibility for nl_langinfo family (version 5)
Differences between the patch from comment 66 and this one:
* dirty aliases ending with "2" (e.g., "__nl_langinfo_noaltmon_l2") replaced
with more decent ending with "_alias" (e.g., "__nl_langinfo_noaltmon_l_alias");
* alt_mon section made obligatory, no need to check for NULLs and empty
strings.
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>From glibc-bugs-return-35377-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:10:05 2016
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
Date: Thu, 22 Dec 2016 23:10:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #72 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9711
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Rebuild abilists to reflect nl_langinfo changes (version 5)
Compared to the one from comment 67: rebased against the current master.
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>From glibc-bugs-return-35378-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:12:11 2016
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #73 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9712
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Add tests for alternative month names (v5)
Actually the same as the patch in comment 56 and comment 46, only the subject
line changed to PATCH 04/13 (instead of 4/11 or 2/6).
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>From glibc-bugs-return-35379-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:14:55 2016
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #74 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9713
--> https://sourceware.org/bugzilla/attachment.cgi?id=9713&action=edit
Proposed solution: implement the %OB format specifier (v5)
Difference between the patch from comment 57 and comment 47: as alt_mon is
obligatory no need to check for NULLs and empty strings, this simplifies the
code a little.
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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--- Comment #75 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9714
--> https://sourceware.org/bugzilla/attachment.cgi?id=9714&action=edit
Provide backward compatibility for strftime family (version 5)
Compared to the one from comment 68 this patch is a little simpler because
there is no need to check if alt_mon is NULL or empty, as it is obligatory now.
Also replaces dirty alias names ending with "2" (like "__strftime_l_compat2")
with more decent ending with "_alias" (like "__strftime_l_compat_alias").
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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is obsolete| |
--- Comment #76 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9715
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Rebuild abilists to reflect strftime family changes (version 5)
Compared to the one from comment 69: rebuilt against the current master.
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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--- Comment #77 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
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Alternative month names NLS data (Polish, v5)
Compared to the one from comment 61: no changes, only the subject line says
"[PATCH 08/13]".
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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--- Comment #78 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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--- Comment #79 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9718
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Alternative month names NLS data (Ukrainian, v5)
Compared to the one from comment 63: similar change as above.
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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--- Comment #80 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9719
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Alternative month names NLS data (Czech, v5)
Compared to the one form comment 64: similar change as above.
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>From glibc-bugs-return-35386-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:32:18 2016
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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--- Comment #81 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9720
--> https://sourceware.org/bugzilla/attachment.cgi?id=9720&action=edit
Alternative month names for all locales
All month names (mon sections) in all supported languages (except those in the
patches above) copied into alt_mon sections.
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>From glibc-bugs-return-35387-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 22 23:37:52 2016
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Subject: [Bug localedata/10871] ru_RU: 'mon' array should contain both nominative and genitive cases
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--- Comment #82 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Created attachment 9721
--> https://sourceware.org/bugzilla/attachment.cgi?id=9721&action=edit
Import month names from CLDR
This patch imports month names from CLDR, where alt_mon sections are not just
copies of mon sections. This adds actual full genitive/nominative support to
15 new locales, together with 4 supported previously makes total 19 locales (17
unique languages because Greek and Russian appear twice). Other changes are
only partially related with the nominative/genitive cases or totally unrelated,
just spotted while importing data.
This is the end of this set of patches.
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>From glibc-bugs-return-35388-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 23 18:29:52 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20990] Double dlclose() detection contains data race, is unreliable, and can corrupt memory.
Date: Fri, 23 Dec 2016 18:29:00 -0000
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
I've filed a POSIX bug to relax the wording so we aren't forced to detect the
error and instead can consider it an invalid use of the API according to glibc.
http://austingroupbugs.net/view.php?id=1110
We will have to document this in the manual along with a new entry for dl*
functions.
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>From glibc-bugs-return-35389-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 23 18:34:42 2016
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
Date: Fri, 23 Dec 2016 18:34:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=57707b7fcc38855869321f8c7827bfe21d729f37
commit 57707b7fcc38855869321f8c7827bfe21d729f37
Author: Carlos O'Donell <carlos@redhat.com>
Date: Fri Dec 23 13:30:22 2016 -0500
Bug 11941: ld.so: Improper assert map->l_init_called in dlclose
There is at least one use case where during exit a library destructor
might call dlclose() on a valid handle and have it fail with an
assertion. We must allow this case, it is a valid handle, and dlclose()
should not fail with an assert. In the future we might be able to return
an error that the dlclose() could not be completed because the opened
library has already been unloaded and destructors have run as part of
exit processing.
For more details see:
https://www.sourceware.org/ml/libc-alpha/2016-12/msg00859.html
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 ++++++
elf/Makefile | 14 +++++-
elf/dl-close.c | 30 ++++++++++---
elf/tst-nodelete-dlclose-dso.c | 90 +++++++++++++++++++++++++++++++++++++
elf/tst-nodelete-dlclose-plugin.c | 40 ++++++++++++++++
elf/tst-nodelete-dlclose.c | 35 ++++++++++++++
6 files changed, 215 insertions(+), 8 deletions(-)
create mode 100644 elf/tst-nodelete-dlclose-dso.c
create mode 100644 elf/tst-nodelete-dlclose-plugin.c
create mode 100644 elf/tst-nodelete-dlclose.c
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>From glibc-bugs-return-35390-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 23 18:35:05 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
Date: Fri, 23 Dec 2016 18:35:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.25
--- Comment #6 from Carlos O'Donell <carlos at redhat dot com> ---
Fixed for 2.25.
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>From glibc-bugs-return-35391-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 23 20:44:39 2016
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
Date: Fri, 23 Dec 2016 20:44:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, name_space/2.24/master has been created
at e9e69e468039fcd57276f783a16aa771a8e4214e (commit)
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e9e69e468039fcd57276f783a16aa771a8e4214e
commit e9e69e468039fcd57276f783a16aa771a8e4214e
Author: Carlos O'Donell <carlos@redhat.com>
Date: Fri Dec 23 13:30:22 2016 -0500
Bug 11941: ld.so: Improper assert map->l_init_called in dlclose
There is at least one use case where during exit a library destructor
might call dlclose() on a valid handle and have it fail with an
assertion. We must allow this case, it is a valid handle, and dlclose()
should not fail with an assert. In the future we might be able to return
an error that the dlclose() could not be completed because the opened
library has already been unloaded and destructors have run as part of
exit processing.
For more details see:
https://www.sourceware.org/ml/libc-alpha/2016-12/msg00859.html
(cherry picked from commit 57707b7fcc38855869321f8c7827bfe21d729f37)
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Subject: [Bug dynamic-link/11941] ld.so: Improper assert map->l_init_called in dlclose
Date: Fri, 23 Dec 2016 20:48:00 -0000
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>From glibc-bugs-return-35393-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 26 03:14:22 2016
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20990] Double dlclose() detection contains data race, is unreliable, and can corrupt memory.
Date: Mon, 26 Dec 2016 03:14:00 -0000
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--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
The solution is easier.
The posix wording only requires that the handle refer to an open DSO, not the
correct DSO.
Therefore all we need to do is a search of the open maps, compare pointers, and
determine if the void* is in the open set. We should really use an algorithm
that scales here though since the lookup should be as quick as we can make it
(red-black tree).
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>From glibc-bugs-return-35394-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Dec 26 09:44:27 2016
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Subject: [Bug build/7065] Support building glibc with -fstack-protector or -fstack-protector-all
Date: Mon, 26 Dec 2016 09:44:00 -0000
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commit cecbc7967f0bcac718b6f8f8942b58403c0e917c
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:09:10 2016 +0100
Enable -fstack-protector=* when requested by configure [BZ #7065]
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2e6c45c59bcd40f1ae8466cbd32f4d263ff45619
commit 2e6c45c59bcd40f1ae8466cbd32f4d263ff45619
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:09:06 2016 +0100
Do not stack-protect sigreturn stubs [BZ #7065]
These are called from the kernel with the stack at a carefully-
chosen location so that the stack frame can be restored: they must not
move the stack pointer lest garbage be restored into the registers.
We explicitly inhibit protection for SPARC and for signal/sigreturn.c:
other arches either define their sigreturn stubs in .S files, or (i386,
x86_64, mips) use macros expanding to top-level asm blocks and explicit
labels in the text section to mock up a "function" without telling the
compiler that one is there at all.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=1ad4ba28e9335c288687d1757bce3221c522f576
commit 1ad4ba28e9335c288687d1757bce3221c522f576
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:09:03 2016 +0100
Drop explicit stack-protection of pieces of the system [BZ #7065]
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7cbb738d218fad3bc91deebfd8ce5f3918592b84
commit 7cbb738d218fad3bc91deebfd8ce5f3918592b84
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:09:00 2016 +0100
Link a non-libc-using test with -fno-stack-protector [BZ #7065]
This test cannot reference __stack_chk_fail because it is not linked
with libc at all.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=524a8ef2ad76af8ac049293d993a1856b0d888fb
commit 524a8ef2ad76af8ac049293d993a1856b0d888fb
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:57 2016 +0100
PLT avoidance for __stack_chk_fail [BZ #7065]
Add a hidden __stack_chk_fail_local alias to libc.so,
and make sure that on targets which use __stack_chk_fail,
this does not introduce a local PLT reference into libc.so.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=66a704c43cfec810fea67a6959f2d1c94f4d594f
commit 66a704c43cfec810fea67a6959f2d1c94f4d594f
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:54 2016 +0100
Work even with compilers which enable -fstack-protector by default [BZ
#7065]
With all the machinery we just added, we can easily arrange to work even
when the compiler passes in -fstack-protector automatically: all the
necessary bits of glibc are always compiled with -fno-stack-protector
now.
So tear out the check in configure, and add appropriate calls to
-fno-stack-protector in tests that need them (largely those that use
-nostdlib), since we don't yet have a __stack_chk_fail that those
tests can rely upon. (GCC often provides one, but we cannot rely on
this, especially not when bootstrapping.)
When stack protection is disabled, explicitly pass -fno-stack-protector
to everything, to stop a compiler hacked to enable it from inserting
calls to __stack_chk_fail via the PLT in every object file.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bc174f20b83d19167ecac14ce0762eddbe47cc64
commit bc174f20b83d19167ecac14ce0762eddbe47cc64
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:51 2016 +0100
Ignore __stack_chk_fail* in the rtld mapfile computation [BZ #7065]
The previous commit prevented rtld itself from being built with
-fstack-protector, but this is not quite enough. We identify which
objects belong in rtld via a test link and analysis of the resulting
mapfile. That link is necessarily done against objects that are
stack-protected, so drags in __stack_chk_fail_local, __stack_chk_fail,
and all the libc and libio code they use.
To stop this happening, use --defsym in the test librtld.map-production
link to force the linker to predefine these two symbols (to 0, but it
could be to anything). (In a real link, this would of course be
catastrophic, but these object files are never used for anything else.)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=995635f95b707488c23bba07be8016c9682d4045
commit 995635f95b707488c23bba07be8016c9682d4045
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:48 2016 +0100
Compile the dynamic linker without stack protection [BZ #7065]
Also compile corresponding routines in the static libc.a with the same
flag.
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=10c85e76c09716e744b4a41006718400b1eb2e84
commit 10c85e76c09716e744b4a41006718400b1eb2e84
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:45 2016 +0100
Disable stack protector in early static initialization [BZ #7065]
The startup code in csu/, and the brk and sbrk functions are
needed very early in initialization of a statically-linked program,
before the stack guard is initialized; TLS initialization also uses
memcpy, which cannot overrun its own stack. Mark all of these as
-fno-stack-protector.
We also finally introduce @libc_cv_ssp@ and @no_stack_protector@, both
substituted by the configury changes made earlier, to detect the case
when -fno-stack-protector is supported by the compiler, and
unconditionally pass it in when this is the case, whether or not
--enable-stack-protector is passed to configure. (This means that
it'll even work when the compiler's been hacked to pass
-fstack-protector by default, unless the hackage is so broken that
it does so in a way that is impossible to override.)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=de6591238b478bc86b8cf5af01a484114e399213
commit de6591238b478bc86b8cf5af01a484114e399213
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:41 2016 +0100
Do not stack-protect ifunc resolvers [BZ #7065]
When dynamically linking, ifunc resolvers are called before TLS is
initialized, so they cannot be safely stack-protected.
We avoid disabling stack-protection on large numbers of files by
using __attribute__ ((__optimize__ ("-fno-stack-protector")))
to turn it off just for the resolvers themselves. (We provide
the attribute even when statically linking, because we will later
use it elsewhere too.)
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=003a27e8195470f470f4d9384ca70d4e9fc8bd1b
commit 003a27e8195470f470f4d9384ca70d4e9fc8bd1b
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:34 2016 +0100
Initialize the stack guard earlier when linking statically [BZ #7065]
The address of the stack canary is stored in a per-thread variable,
which means that we must ensure that the TLS area is intialized before
calling any -fstack-protector'ed functions. For dynamically linked
applications, we ensure this (in a later patch) by disabling
-fstack-protector for the whole dynamic linker, but for static
applications, the AT_ENTRY address is called directly by the kernel, so
we must deal with the problem differently.
In static appliations, __libc_setup_tls performs the TCB setup and TLS
initialization, so this commit arranges for it to be called early and
unconditionally. The call (and the stack guard initialization) is
before the DL_SYSDEP_OSCHECK hook, which if set will probably call
functions which are stack-protected (it does on Linux and NaCL too). We
also move apply_irel up, so that we can still safely call functions that
require ifuncs while in __libc_setup_tls (though if stack-protection is
enabled we still have to avoid calling functions that are not
stack-protected at this stage).
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=03baef1c9cfb396d76cae20a00aee657871e79c4
commit 03baef1c9cfb396d76cae20a00aee657871e79c4
Author: Nick Alcock <nick.alcock@oracle.com>
Date: Mon Dec 26 10:08:18 2016 +0100
Configure support for --enable-stack-protector [BZ #7065]
This adds =all and =strong, with obvious semantics, defaulting to off.
We don't validate the value of the option yet: that's in a later patch.
Nor do we use it for anything at this stage.
We differentiate between 'the compiler understands -fstack-protector'
and 'the user wanted -fstack-protector' so that we can pass
-fno-stack-protector in appropriate places even if the user didn't want
to turn on -fstack-protector for other parts. (This helps us overcome
another existing limitation, that glibc doesn't work with GCCs hacked
to pass in -fstack-protector by default.)
We also arrange to set the STACK_PROTECTOR_LEVEL #define to a value
appropriate for the stack-protection level in use for each file in
particular.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 149 +++++++++++++
INSTALL | 11 +
Makeconfig | 8 +-
NEWS | 4 +
aclocal.m4 | 6 +-
config.h.in | 10 +
config.make.in | 2 +
configure | 243 +++++++++++----------
configure.ac | 146 +++++++------
csu/Makefile | 4 +
csu/libc-start.c | 29 ++--
csu/libc-tls.c | 17 +-
debug/Makefile | 6 +
debug/stack_chk_fail.c | 2 +
elf/Makefile | 30 +++-
elf/ifuncdep2.c | 3 +
elf/ifuncmain6pie.c | 1 +
elf/ifuncmain7.c | 1 +
elf/ifuncmod1.c | 3 +
elf/ifuncmod5.c | 3 +
elf/rtld-Rules | 2 +
include/libc-symbols.h | 12 +-
login/Makefile | 1 -
manual/install.texi | 11 +
misc/Makefile | 7 +
nptl/nptl-init.c | 16 --
nscd/Makefile | 1 -
resolv/Makefile | 1 -
signal/Makefile | 2 +
string/Makefile | 4 +
sysdeps/generic/ifunc-sel.h | 2 +
sysdeps/generic/ldsodefs.h | 11 +
sysdeps/generic/symbol-hacks.h | 12 +
sysdeps/i386/Makefile | 2 +-
sysdeps/nacl/nacl_interface_query.c | 1 +
sysdeps/powerpc/ifunc-sel.h | 2 +
sysdeps/unix/make-syscalls.sh | 1 +
sysdeps/unix/sysv/linux/sparc/sparc32/sigaction.c | 8 +-
sysdeps/unix/sysv/linux/sparc/sparc64/sigaction.c | 4 +-
sysdeps/unix/sysv/linux/x86_64/x32/getcpu.c | 1 +
sysdeps/x86_64/ifuncmod8.c | 1 +
41 files changed, 539 insertions(+), 241 deletions(-)
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To: glibc-bugs@sourceware.org
Subject: [Bug build/7065] Support building glibc with -fstack-protector or -fstack-protector-all
Date: Mon, 26 Dec 2016 13:08:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #24 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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Subject: [Bug build/7065] Support building glibc with -fstack-protector or -fstack-protector-all
Date: Mon, 26 Dec 2016 13:09:00 -0000
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--- Comment #25 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
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The branch, fw/stack-protector has been deleted
was a547a051a93361a9ec4edf283bcebea66481fca8
- Log -----------------------------------------------------------------
a547a051a93361a9ec4edf283bcebea66481fca8 Enable -fstack-protector=* when
requested by configure [BZ #7065]
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>From glibc-bugs-return-35397-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 27 12:48:41 2016
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Subject: [Bug nptl/19941] pthread_cond_broadcast wakes only one thread when used with PTHREAD_PRIO_INHERIT mutex on powerpc
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Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tuliom at linux dot vnet.ibm.com
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>From glibc-bugs-return-35398-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 27 12:54:13 2016
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Subject: [Bug string/19387] Integer overflow in memchr
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |adhemerval.zanella at linaro dot o
| |rg
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed by 3daef2c8ee4df.
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>From glibc-bugs-return-35399-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 27 13:04:06 2016
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Subject: [Bug dynamic-link/20831] _dl_map_segments does not test for __mprotect failures consistently
Date: Tue, 27 Dec 2016 13:04:00 -0000
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--- Comment #4 from Dmitry V. Levin <ldv at sourceware dot org> ---
(In reply to Gleb Fotengauer-Malinovskiy from comment #3)
> (In reply to Florian Weimer from comment #2)
> > Interesting. This “-e fault“ option is neat. Do you know when it was
> > introduced in to strace? Or has it been there since basically forever and I
> > simply did not notice it?
>
> https://sourceforge.net/p/strace/mailman/message/35496000/
strace syscall fault injection is a part of strace 4.15 released in December
2016.
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Subject: [Bug libc/19514] [PATCH] Fix spelling errors in spelling "implement"/"implementation" in several places
Date: Tue, 27 Dec 2016 15:46:00 -0000
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--- Comment #1 from Shlomi Fish <shlomif at shlomifish dot org> ---
Hi all!
Ping! It's been over 11 months and I have yet to hear back about it.
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Subject: [Bug network/20964] sunrpc: Stack-based buffer overflow in getrpcport with RES_USE_INET6
Date: Tue, 27 Dec 2016 15:47:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via 5c6e6747356f5d473c2c62e818bc24432ddef3e2 (commit)
from a36451ff4142b63a76cea9e52ffe4687290071a4 (commit)
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5c6e6747356f5d473c2c62e818bc24432ddef3e2
commit 5c6e6747356f5d473c2c62e818bc24432ddef3e2
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Dec 27 16:44:15 2016 +0100
sunrpc: Always obtain AF_INET addresses from NSS [BZ #20964]
The new __libc_rpc_gethostbyname function calls gethostbyname2_r
with an AF_INET argument and is therefore not affected by the
RES_USE_INET6 flag.
Validated with the following test program, with and without
RES_OPTIONS=inet6, against a NFS server. (Link with -lrpcsvc.)
#include <rpc/clnt.h>
#include <rpcsvc/mount.h>
#include <stdio.h>
#include <string.h>
static void
usage (char **argv)
{
printf ("usage:\n"
" %1$s HOST getrpcport\n"
" %1$s HOST callrpc\n"
" %1$s HOST clnt_create\n",
argv[0]);
}
static void
dump_exports (struct exportnode *exports)
{
while (exports != NULL)
{
printf ("%s\n", exports->ex_dir);
exports = exports->ex_next;
}
}
int
main (int argc, char **argv)
{
if (argc != 3)
{
usage (argv);
return 1;
}
const char *host = argv[1];
const char *command = argv[2];
if (strcmp (command, "getrpcport") == 0)
{
int port = getrpcport (host, MOUNTPROG, MOUNTVERS, IPPROTO_UDP);
printf ("getrpcport: %d\n", port);
}
else if (strcmp (command, "callrpc") == 0)
{
struct exportnode *exports = NULL;
int ret = callrpc (host, MOUNTPROG, MOUNTVERS, MOUNTPROC_EXPORT,
(xdrproc_t) xdr_void, NULL,
(xdrproc_t) xdr_exports, (char *)&exports);
if (ret != 0)
{
clnt_perrno (ret);
puts ("");
return 1;
}
dump_exports (exports);
}
else if (strcmp (command, "clnt_create") == 0)
{
CLIENT *client = clnt_create
(host, MOUNTPROG, MOUNTVERS, "udp");
if (client == NULL)
{
printf ("error: clnt_create failed\n");
return 1;
}
struct exportnode *exports = NULL;
int ret = CLNT_CALL (client, MOUNTPROC_EXPORT,
(xdrproc_t) xdr_void, NULL,
(xdrproc_t) xdr_exports, (char *)&exports,
((struct timeval) {15, 0}));
if (ret != 0)
{
clnt_perrno (ret);
puts ("");
return 1;
}
dump_exports (exports);
}
else
{
usage (argv);
return 1;
}
return 0;
}
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 ++++++
include/rpc/rpc.h | 6 +++
sunrpc/Makefile | 3 +-
sunrpc/clnt_gen.c | 37 +---------------------
sunrpc/clnt_simp.c | 23 +------------
sunrpc/getrpcport.c | 40 ++++++++++++------------
sunrpc/rpc_gethostbyname.c | 73 ++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 116 insertions(+), 77 deletions(-)
create mode 100644 sunrpc/rpc_gethostbyname.c
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>From glibc-bugs-return-35402-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 27 15:49:15 2016
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To: glibc-bugs@sourceware.org
Subject: [Bug network/20964] sunrpc: Stack-based buffer overflow in getrpcport with RES_USE_INET6
Date: Tue, 27 Dec 2016 15:49:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Version|unspecified |2.25
Resolution|--- |FIXED
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Flags|security+ |security-
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for 2.25.
sunrpc/rpcinfo.c was already dead code.
I'm clearing the security+ flag because RES_OPTIONS is protected by
UNSECURE_ENVVARS.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/17252] getrandom and getentropy syscall
Date: Tue, 27 Dec 2016 16:31:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ccb8b7f7d488f11570042226bed17dfee8afb3c8
commit ccb8b7f7d488f11570042226bed17dfee8afb3c8
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Dec 27 17:13:21 2016 +0100
Declare getentropy in <unistd.h> [BZ #17252]
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
posix/unistd.h | 5 +++++
2 files changed, 10 insertions(+), 0 deletions(-)
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Subject: [Bug libc/19514] [PATCH] Fix spelling errors in spelling "implement"/"implementation" in several places
Date: Tue, 27 Dec 2016 20:10:00 -0000
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Dmitry V. Levin <ldv at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at sourceware dot org |ldv at sourceware dot org
--- Comment #2 from Dmitry V. Levin <ldv at sourceware dot org> ---
Thanks, I'm going to apply the following obvious fix:
$ git grep -El 'implemetn?ation' | xargs sed -ri
's/implemetn?ation/implementation/g'
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>From glibc-bugs-return-35405-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Dec 27 20:32:32 2016
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Subject: [Bug libc/19514] [PATCH] Fix spelling errors in spelling "implement"/"implementation" in several places
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commit 12f1ae05c0b4e3cc58f23d9bb72ab291681ea8a8
Author: Dmitry V. Levin <ldv@altlinux.org>
Date: Tue Dec 27 20:13:35 2016 +0000
Fix typos in the spelling of "implementation"
Apply the following spelling fix:
$ git grep -El 'implemetn?ation' |
xargs sed -ri 's/implemetn?ation/implementation/g'
[BZ #19514]
* resolv/res_send.c: Fix typo in comment.
* sysdeps/i386/i386-mcount.S: Likewise.
* sysdeps/s390/s390-32/s390-mcount.S: Likewise.
* sysdeps/s390/s390-64/s390x-mcount.S: Likewise.
* sysdeps/sparc/sparc-mcount.S: Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 11 ++++++++++-
resolv/res_send.c | 2 +-
sysdeps/i386/i386-mcount.S | 2 +-
sysdeps/s390/s390-32/s390-mcount.S | 2 +-
sysdeps/s390/s390-64/s390x-mcount.S | 2 +-
sysdeps/sparc/sparc-mcount.S | 2 +-
6 files changed, 15 insertions(+), 6 deletions(-)
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Subject: [Bug libc/19514] [PATCH] Fix spelling errors in spelling "implement"/"implementation" in several places
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What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.25
--- Comment #4 from Dmitry V. Levin <ldv at sourceware dot org> ---
Fixed for 2.25.
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Subject: [Bug network/20964] sunrpc: Stack-based buffer overflow in getrpcport with RES_USE_INET6
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What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.25
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Subject: [Bug libc/19514] [PATCH] Fix spelling errors in spelling "implement"/"implementation" in several places
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--- Comment #5 from Shlomi Fish <shlomif at shlomifish dot org> ---
(In reply to Dmitry V. Levin from comment #4)
> Fixed for 2.25.
Thanks!
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/20998] New: libpthread IFUNC resolver for longjmp, siglongjmp can lead to crash
Date: Wed, 28 Dec 2016 12:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20998
Bug ID: 20998
Summary: libpthread IFUNC resolver for longjmp, siglongjmp can
lead to crash
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The IFUNC resolvers attempt to read a function pointer from the GOT before it
has been initialized.
Patch was posted to the mailing list:
https://sourceware.org/ml/libc-alpha/2016-12/msg01013.html
Chromium bug report:
https://bugs.chromium.org/p/chromium/issues/detail?id=676693
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>From glibc-bugs-return-35410-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 28 13:23:56 2016
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Subject: [Bug nptl/18435] pthread_once hangs when init routine throws an exception
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Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> changed:
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CC| |tuliom at linux dot vnet.ibm.com
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>From glibc-bugs-return-35411-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Dec 28 17:34:50 2016
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Subject: [Bug malloc/14827] free() doesn't honor M_TRIM_THRESHOLD
Date: Wed, 28 Dec 2016 17:34:00 -0000
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Anthony Fieroni <bvbfan at abv dot bg> changed:
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CC| |bvbfan at abv dot bg
--- Comment #4 from Anthony Fieroni <bvbfan at abv dot bg> ---
I saw branch dj/malloc and i don't think it can fix the issue. The main problem
is in
_int_free (mstate av, mchunkptr p, int have_lock)
if ((unsigned long)(size) <= (unsigned long)(get_max_fast ()) <-------------
if all chunks size are lower than M_MXFAST this code *never* release
consolidate memory. This is serious issue after all. For me this must be
if all_unused_size >= 2*FASTBIN_CONSOLIDATION_THRESHOLD we must free one of
FASTBIN_CONSOLIDATION_THRESHOLD. I can make patch, when i realise how to get
all consolidate chunk size.
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>From glibc-bugs-return-35412-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 08:01:19 2016
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Subject: [Bug network/18784] res_query and related function crash for special record type queries (CVE-2015-5180)
Date: Thu, 29 Dec 2016 08:01:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |20593
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=20593
[Bug 20593] Update DNS RR type definitions
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>From glibc-bugs-return-35413-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 08:01:19 2016
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Subject: [Bug network/20593] Update DNS RR type definitions
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |18784
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
I have a script which automates parts of the updates.
The naming rules introduce a T_UNSPEC macro, so we need to move that out of the
way first, as part of the fix for bug 18784.
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=18784
[Bug 18784] res_query and related function crash for special record type
queries (CVE-2015-5180)
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>From glibc-bugs-return-35414-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 11:32:50 2016
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Subject: [Bug math/5268] [ldbl-128ibm] huge and denornal reads and writes for long doubles
Date: Thu, 29 Dec 2016 11:32:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
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Status|ASSIGNED |NEW
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>From glibc-bugs-return-35415-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 13:44:59 2016
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Subject: [Bug math/5268] [ldbl-128ibm] huge and denornal reads and writes for long doubles
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--- Comment #9 from Tulio Magno Quites Machado Filho <tuliom at linux dot vnet.ibm.com> ---
The testcase mentioned in comment #1 doesn't fail anymore on glibc >= 2.22.
(In reply to Alan Modra from comment #8)
> http://sourceware.org/ml/libc-alpha/2013-08/msg00106.html was never
> reviewed. The commits here are for the ibm-2.18 branch..
This patch was never reviewed or applied, but bug #19853 fixed a similar issue.
Are there any other issues covered by this bug report preventing it from being
closed?
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>From glibc-bugs-return-35416-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 13:50:59 2016
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Subject: [Bug malloc/14483] obstack uses int for allocation sizes
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Alan Modra <amodra at gmail dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |NEW
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--- Comment #8 from Alan Modra <amodra at gmail dot com> ---
Maybe the bug will get more attention if I'm not the assignee.
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>From glibc-bugs-return-35417-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 16:45:23 2016
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https://sourceware.org/bugzilla/show_bug.cgi?id=21004
Bug ID: 21004
Summary: fread/fwrite does not handle EINTR correctly
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: stdio
Assignee: unassigned at sourceware dot org
Reporter: bernd.edlinger at hotmail dot de
Target Milestone: ---
stdio FILE streams don't seen to work correctly when signals
without SA_RESTART are delivered, because EINTR is not handled
in fread, and ferror simply returns true,
but it is not quite defined if errno is valid or not
when ferror returns true.
I think EINTR should be handled differently than
other error codes: probably simply ignore and retry the
failed I/O, or at least not set _IO_ERR_SEEN ?
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>From glibc-bugs-return-35418-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 16:57:48 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug stdio/21004] fread/fwrite does not handle EINTR correctly
Date: Thu, 29 Dec 2016 16:57:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
POSIX specifies that fread sets errno on failure, so the EINTR case can at
least be detected.
Are you concerned about short reads which are not a multiple of the element
size? Recovery from EINTR would be difficult under such circumstances.
We can't make fread simply ignore EINTR because too many things would break.
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>From glibc-bugs-return-35419-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Dec 29 19:14:27 2016
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From: "bernd.edlinger at hotmail dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/21004] fread/fwrite does not handle EINTR correctly
Date: Thu, 29 Dec 2016 19:14:00 -0000
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--- Comment #2 from Bernd Edlinger <bernd.edlinger at hotmail dot de> ---
(In reply to Florian Weimer from comment #1)
> POSIX specifies that fread sets errno on failure, so the EINTR case can at
> least be detected.
>
Hmm I see, the man page does not mention that.
But Posix IEEE Std 1003.1-2001 does.
> Are you concerned about short reads which are not a multiple of the element
> size? Recovery from EINTR would be difficult under such circumstances.
>
Yes. And what happens with fscanf in case of EINTR.
I am just wondering, if any application is able to handle
this error, or what it would need to do to be on the safe side.
Everything is fine if only SA_RESTART signals are used, which
is the usually the case, though.
> We can't make fread simply ignore EINTR because too many things would break.
What exactly would break?
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>From glibc-bugs-return-35420-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Dec 30 01:53:30 2016
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Subject: [Bug math/5268] [ldbl-128ibm] huge and denornal reads and writes for long doubles
Date: Fri, 30 Dec 2016 01:53:00 -0000
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #10 from Alan Modra <amodra at gmail dot com> ---
Fixed by https://sourceware.org/ml/libc-alpha/2016-03/msg00548.html
It's a shame there was this duplication of effort. I guess my mistake was
tidying glibc code in consolidating the shifting, and that made the patch too
hard to review. It might have broken some other more important glibc target!
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Subject: [Bug locale/20974] bs_BA: yesexpr/noexpr regexes accept any character
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Author: Mike Frysinger <vapier@gentoo.org>
Date: Thu Dec 15 18:34:05 2016 -0500
localedata: bs_BA: fix yesexpr/noexpr [BZ #20974]
Both regexes end with a "*." which means the previous match can be
omitted, and then the . allows them to match any input at all.
This means tools like coreutils' `rm -i` will always delete things
when prompted because the yesexpr regex matches all inputs (even
the negative ones).
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 6 ++++++
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Author: Mike Frysinger <vapier@gentoo.org>
Date: Thu Dec 15 18:34:05 2016 -0500
localedata: bs_BA: fix yesexpr/noexpr [BZ #20974]
Both regexes end with a "*." which means the previous match can be
omitted, and then the . allows them to match any input at all.
This means tools like coreutils' `rm -i` will always delete things
when prompted because the yesexpr regex matches all inputs (even
the negative ones).
(cherry picked from commit a035eb6928bc63fb798dcc1421529f933122d74f)
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 6 ++++++
localedata/locales/bs_BA | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
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commit e9d53ff4d46e27d321161a2fb8f16820ea2cb68e
Author: Mike Frysinger <vapier@gentoo.org>
Date: Thu Dec 15 18:34:05 2016 -0500
localedata: bs_BA: fix yesexpr/noexpr [BZ #20974]
Both regexes end with a "*." which means the previous match can be
omitted, and then the . allows them to match any input at all.
This means tools like coreutils' `rm -i` will always delete things
when prompted because the yesexpr regex matches all inputs (even
the negative ones).
(cherry picked from commit a035eb6928bc63fb798dcc1421529f933122d74f)
-----------------------------------------------------------------------
Summary of changes:
localedata/ChangeLog | 6 ++++++
localedata/locales/bs_BA | 4 ++--
2 files changed, 8 insertions(+), 2 deletions(-)
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Mike Frysinger <vapier at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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Target Milestone|--- |2.25
--- Comment #4 from Mike Frysinger <vapier at gentoo dot org> ---
it'll be released in 2.25, and i cherry picked it back to 2.24 & 2.23
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/21006] New: string/tst-xbzero-opt fails on s390x
Date: Fri, 30 Dec 2016 12:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21006
Bug ID: 21006
Summary: string/tst-xbzero-opt fails on s390x
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Target: s390x
The test fails consistently on s390x:
PASS: no clear/prepare: expected 32 got 32
PASS: no clear/test: expected some got 32
PASS: ordinary clear/prepare: expected 32 got 32
INFO: ordinary clear/test: found 0 patterns (memset not eliminated)
PASS: explicit clear/prepare: expected 32 got 32
FAIL: explicit clear/test: expected 0 got 1
We need to investigate this before the release and determine if this is a test
bug or a real problem with the implementation.
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Subject: [Bug nptl/13165] pthread_cond_wait() can consume a signal that was sent before it started waiting
Date: Sat, 31 Dec 2016 13:58:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=13165
--- Comment #41 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".
The branch, master has been updated
via ed19993b5b0d05d62cc883571519a67dae481a14 (commit)
from c0ff3befa9861171498dd29666d32899e9d8145b (commit)
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not appeared on any other notification email; so we list those
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- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ed19993b5b0d05d62cc883571519a67dae481a14
commit ed19993b5b0d05d62cc883571519a67dae481a14
Author: Torvald Riegel <triegel@redhat.com>
Date: Wed May 25 23:43:36 2016 +0200
New condvar implementation that provides stronger ordering guarantees.
This is a new implementation for condition variables, required
after http://austingroupbugs.net/view.php?id=609 to fix bug 13165. In
essence, we need to be stricter in which waiters a signal or broadcast
is required to wake up; this couldn't be solved using the old algorithm.
ISO C++ made a similar clarification, so this also fixes a bug in
current libstdc++, for example.
We can't use the old algorithm anymore because futexes do not guarantee
to wake in FIFO order. Thus, when we wake, we can't simply let any
waiter grab a signal, but we need to ensure that one of the waiters
happening before the signal is woken up. This is something the previous
algorithm violated (see bug 13165).
There's another issue specific to condvars: ABA issues on the underlying
futexes. Unlike mutexes that have just three states, or semaphores that
have no tokens or a limited number of them, the state of a condvar is
the *order* of the waiters. A waiter on a semaphore can grab a token
whenever one is available; a condvar waiter must only consume a signal
if it is eligible to do so as determined by the relative order of the
waiter and the signal.
Therefore, this new algorithm maintains two groups of waiters: Those
eligible to consume signals (G1), and those that have to wait until
previous waiters have consumed signals (G2). Once G1 is empty, G2
becomes the new G1. 64b counters are used to avoid ABA issues.
This condvar doesn't yet use a requeue optimization (ie, on a broadcast,
waking just one thread and requeueing all others on the futex of the
mutex supplied by the program). I don't think doing the requeue is
necessarily the right approach (but I haven't done real measurements
yet):
* If a program expects to wake many threads at the same time and make
that scalable, a condvar isn't great anyway because of how it requires
waiters to operate mutually exclusive (due to the mutex usage). Thus, a
thundering herd problem is a scalability problem with or without the
optimization. Using something like a semaphore might be more
appropriate in such a case.
* The scalability problem is actually at the mutex side; the condvar
could help (and it tries to with the requeue optimization), but it
should be the mutex who decides how that is done, and whether it is done
at all.
* Forcing all but one waiter into the kernel-side wait queue of the
mutex prevents/avoids the use of lock elision on the mutex. Thus, it
prevents the only cure against the underlying scalability problem
inherent to condvars.
* If condvars use short critical sections (ie, hold the mutex just to
check a binary flag or such), which they should do ideally, then forcing
all those waiter to proceed serially with kernel-based hand-off (ie,
futex ops in the mutex' contended state, via the futex wait queues) will
be less efficient than just letting a scalable mutex implementation take
care of it. Our current mutex impl doesn't employ spinning at all, but
if critical sections are short, spinning can be much better.
* Doing the requeue stuff requires all waiters to always drive the mutex
into the contended state. This leads to each waiter having to call
futex_wake after lock release, even if this wouldn't be necessary.
[BZ #13165]
* nptl/pthread_cond_broadcast.c (__pthread_cond_broadcast): Rewrite to
use new algorithm.
* nptl/pthread_cond_destroy.c (__pthread_cond_destroy): Likewise.
* nptl/pthread_cond_init.c (__pthread_cond_init): Likewise.
* nptl/pthread_cond_signal.c (__pthread_cond_signal): Likewise.
* nptl/pthread_cond_wait.c (__pthread_cond_wait): Likewise.
(__pthread_cond_timedwait): Move here from pthread_cond_timedwait.c.
(__condvar_confirm_wakeup, __condvar_cancel_waiting,
__condvar_cleanup_waiting, __condvar_dec_grefs,
__pthread_cond_wait_common): New.
(__condvar_cleanup): Remove.
* npt/pthread_condattr_getclock.c (pthread_condattr_getclock): Adapt.
* npt/pthread_condattr_setclock.c (pthread_condattr_setclock):
Likewise.
* npt/pthread_condattr_getpshared.c (pthread_condattr_getpshared):
Likewise.
* npt/pthread_condattr_init.c (pthread_condattr_init): Likewise.
* nptl/tst-cond1.c: Add comment.
* nptl/tst-cond20.c (do_test): Adapt.
* nptl/tst-cond22.c (do_test): Likewise.
* sysdeps/aarch64/nptl/bits/pthreadtypes.h (pthread_cond_t): Adapt
structure.
* sysdeps/arm/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/ia64/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/m68k/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/microblaze/nptl/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/mips/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/nios2/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/s390/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/sh/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/tile/nptl/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h (pthread_cond_t):
Likewise.
* sysdeps/x86/bits/pthreadtypes.h (pthread_cond_t): Likewise.
* sysdeps/nptl/internaltypes.h (COND_NWAITERS_SHIFT): Remove.
(COND_CLOCK_BITS): Adapt.
* sysdeps/nptl/pthread.h (PTHREAD_COND_INITIALIZER): Adapt.
* nptl/pthreadP.h (__PTHREAD_COND_CLOCK_MONOTONIC_MASK,
__PTHREAD_COND_SHARED_MASK): New.
* nptl/nptl-printers.py (CLOCK_IDS): Remove.
(ConditionVariablePrinter, ConditionVariableAttributesPrinter): Adapt.
* nptl/nptl_lock_constants.pysym: Adapt.
* nptl/test-cond-printers.py: Adapt.
* sysdeps/unix/sysv/linux/hppa/internaltypes.h (cond_compat_clear,
cond_compat_check_and_clear): Adapt.
* sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c: Remove file
...
* sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c
(__pthread_cond_timedwait): ... and move here.
* nptl/DESIGN-condvar.txt: Remove file.
* nptl/lowlevelcond.sym: Likewise.
* nptl/pthread_cond_timedwait.c: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i586/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/i386/i686/pthread_cond_wait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise.
* sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 74 ++
nptl/DESIGN-condvar.txt | 134 ---
nptl/Makefile | 6 +-
nptl/lowlevelcond.sym | 16 -
nptl/nptl-printers.py | 70 +--
nptl/nptl_lock_constants.pysym | 27 +-
nptl/pthreadP.h | 7 +
nptl/pthread_cond_broadcast.c | 99 +-
nptl/pthread_cond_common.c | 466 ++++++++++
nptl/pthread_cond_destroy.c | 82 +--
nptl/pthread_cond_init.c | 28 +-
nptl/pthread_cond_signal.c | 99 ++-
nptl/pthread_cond_timedwait.c | 268 ------
nptl/pthread_cond_wait.c | 754 ++++++++++++----
nptl/pthread_condattr_getclock.c | 2 +-
nptl/pthread_condattr_getpshared.c | 3 +-
nptl/pthread_condattr_init.c | 4 +-
nptl/pthread_condattr_setclock.c | 11 +-
nptl/test-cond-printers.py | 2 +-
nptl/tst-cond1.c | 3 +
nptl/tst-cond20.c | 5 +-
nptl/tst-cond22.c | 18 +-
sysdeps/aarch64/nptl/bits/pthreadtypes.h | 31 +-
sysdeps/arm/nptl/bits/pthreadtypes.h | 29 +-
sysdeps/ia64/nptl/bits/pthreadtypes.h | 31 +-
sysdeps/m68k/nptl/bits/pthreadtypes.h | 32 +-
sysdeps/microblaze/nptl/bits/pthreadtypes.h | 29 +-
sysdeps/mips/nptl/bits/pthreadtypes.h | 31 +-
sysdeps/nios2/nptl/bits/pthreadtypes.h | 31 +-
sysdeps/nptl/internaltypes.h | 17 +-
sysdeps/nptl/pthread.h | 2 +-
sysdeps/s390/nptl/bits/pthreadtypes.h | 29 +-
sysdeps/sh/nptl/bits/pthreadtypes.h | 29 +-
sysdeps/tile/nptl/bits/pthreadtypes.h | 29 +-
sysdeps/unix/sysv/linux/alpha/bits/pthreadtypes.h | 31 +-
sysdeps/unix/sysv/linux/hppa/internaltypes.h | 40 +-
.../unix/sysv/linux/hppa/pthread_cond_timedwait.c | 41 -
sysdeps/unix/sysv/linux/hppa/pthread_cond_wait.c | 13 +
.../sysv/linux/i386/i686/pthread_cond_timedwait.S | 20 -
.../unix/sysv/linux/i386/pthread_cond_broadcast.S | 241 -----
sysdeps/unix/sysv/linux/i386/pthread_cond_signal.S | 216 -----
.../unix/sysv/linux/i386/pthread_cond_timedwait.S | 974 --------------------
sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S | 642 -------------
.../unix/sysv/linux/powerpc/bits/pthreadtypes.h | 31 +-
.../sysv/linux/x86_64/pthread_cond_broadcast.S | 177 ----
.../unix/sysv/linux/x86_64/pthread_cond_signal.S | 161 ----
.../sysv/linux/x86_64/pthread_cond_timedwait.S | 623 -------------
sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S | 555 -----------
sysdeps/x86/bits/pthreadtypes.h | 29 +-
49 files changed, 1671 insertions(+), 4621 deletions(-)
delete mode 100644 nptl/DESIGN-condvar.txt
delete mode 100644 nptl/lowlevelcond.sym
create mode 100644 nptl/pthread_cond_common.c
delete mode 100644 nptl/pthread_cond_timedwait.c
delete mode 100644 sysdeps/unix/sysv/linux/hppa/pthread_cond_timedwait.c
delete mode 100644 sysdeps/unix/sysv/linux/i386/i686/pthread_cond_timedwait.S
delete mode 100644 sysdeps/unix/sysv/linux/i386/pthread_cond_broadcast.S
delete mode 100644 sysdeps/unix/sysv/linux/i386/pthread_cond_signal.S
delete mode 100644 sysdeps/unix/sysv/linux/i386/pthread_cond_timedwait.S
delete mode 100644 sysdeps/unix/sysv/linux/i386/pthread_cond_wait.S
delete mode 100644 sysdeps/unix/sysv/linux/x86_64/pthread_cond_broadcast.S
delete mode 100644 sysdeps/unix/sysv/linux/x86_64/pthread_cond_signal.S
delete mode 100644 sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S
delete mode 100644 sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S
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>From glibc-bugs-return-35428-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 31 14:56:32 2016
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/19853] Printing IBM long double in decimal with high precision is sometimes incorrect
Date: Sat, 31 Dec 2016 14:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19853
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jvdelisle at gcc dot gnu.org
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
*** Bug 5268 has been marked as a duplicate of this bug. ***
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Subject: [Bug math/5268] [ldbl-128ibm] huge and denornal reads and writes for long doubles
Date: Sat, 31 Dec 2016 14:56:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Resolution|FIXED |DUPLICATE
--- Comment #11 from Florian Weimer <fweimer at redhat dot com> ---
*** This bug has been marked as a duplicate of bug 19853 ***
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/13165] pthread_cond_wait() can consume a signal that was sent before it started waiting
Date: Sat, 31 Dec 2016 17:43:00 -0000
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--- Comment #42 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
If the commit fixes the bug, please mark it as FIXED with milestone set to
2.25.
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Subject: [Bug libc/17252] getrandom and getentropy syscall
Date: Sat, 31 Dec 2016 17:52:00 -0000
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commit a851999f61ad7ceabc2a945a3c31c60e8c914a4b
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Dec 31 15:11:29 2016 +0100
getentropy: Declare it in <unistd.h> for __USE_MISC [BZ #17252]
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
posix/unistd.h | 2 +-
2 files changed, 7 insertions(+), 1 deletions(-)
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Subject: [Bug network/19582] Deprecate RES_USE_INET6
Date: Sat, 31 Dec 2016 17:59:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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Subject: [Bug network/19582] Deprecate RES_USE_INET6
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commit b76e065991ec01299225d9da90a627ebe6c1ac97
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Oct 4 11:52:10 2016 +0200
resolv: Deprecate the "inet6" option and RES_USE_INET6 [BZ #19582]
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 38 ++++++++++++++++++++
NEWS | 5 +++
nis/nss_nis/nis-hosts.c | 13 +++----
nis/nss_nisplus/nisplus-hosts.c | 9 +++--
nscd/aicache.c | 5 ++-
nscd/nscd_gethst_r.c | 4 +-
nss/digits_dots.c | 8 ++--
nss/nss_files/files-hosts.c | 10 +++---
resolv/Makefile | 3 ++
resolv/README | 6 +---
resolv/compat-gethnamaddr.c | 14 ++++----
resolv/nss_dns/dns-host.c | 18 ++-------
resolv/res_debug.c | 4 +-
resolv/res_init.c | 4 +-
.../resolv-internal.h | 24 +++++++------
resolv/resolv.h | 3 +-
sysdeps/posix/getaddrinfo.c | 16 +++++----
17 files changed, 111 insertions(+), 73 deletions(-)
copy elf/tst-latepthreadmod.c => resolv/resolv-internal.h (65%)
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Subject: [Bug network/18784] res_query and related function crash for special record type queries (CVE-2015-5180)
Date: Sat, 31 Dec 2016 19:51:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit fc82b0a2dfe7dbd35671c10510a8da1043d746a5
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Dec 31 20:22:09 2016 +0100
CVE-2015-5180: resolv: Fix crash with internal QTYPE [BZ #18784]
Also rename T_UNSPEC because an upcoming public header file
update will use that name.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 14 +++
NEWS | 8 ++-
include/arpa/nameser_compat.h | 6 +-
resolv/Makefile | 3 +
resolv/nss_dns/dns-host.c | 2 +-
resolv/res_mkquery.c | 4 +
resolv/res_query.c | 6 +-
resolv/tst-resolv-qtypes.c | 185 +++++++++++++++++++++++++++++++++++++++++
8 files changed, 220 insertions(+), 8 deletions(-)
create mode 100644 resolv/tst-resolv-qtypes.c
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Subject: [Bug network/18784] res_query and related function crash for special record type queries (CVE-2015-5180)
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.25
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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Subject: [Bug network/20593] Update DNS RR type definitions
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
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commit 4f157746e0c713965d9143b52fef606312087c48
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Dec 31 21:16:27 2016 +0100
Update DNS RR type definitions [BZ #20593]
This commit includes a new script which allows generating parts of
the header files from IANA DNS parameters protocol registry.
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 24 +++++++
resolv/arpa/nameser.h | 145 ++++++++++++++++++++++++++----------------
resolv/arpa/nameser_compat.h | 127 ++++++++++++++++++++++++------------
resolv/res_debug.c | 7 +-
scripts/gen-rrtypes.py | 68 ++++++++++++++++++++
5 files changed, 270 insertions(+), 101 deletions(-)
create mode 100644 scripts/gen-rrtypes.py
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Subject: [Bug network/20593] Update DNS RR type definitions
Date: Sat, 31 Dec 2016 20:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20593
Bug 20593 depends on bug 18784, which changed state.
Bug 18784 Summary: res_query and related function crash for special record type queries (CVE-2015-5180)
https://sourceware.org/bugzilla/show_bug.cgi?id=18784
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug network/20593] Update DNS RR type definitions
Date: Sat, 31 Dec 2016 20:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20593
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Target Milestone|--- |2.25
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in 2.25.
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>From glibc-bugs-return-35438-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Dec 31 20:18:39 2016
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Subject: [Bug network/18784] res_query and related function crash for special record type queries (CVE-2015-5180)
Date: Sat, 31 Dec 2016 20:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=18784
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
.
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^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2016-10-24 17:55 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-06-25 15:19 [Bug libc/17087] New: Implement memcasemem() kenatmit at gmail dot com
2014-06-25 16:40 ` [Bug libc/17087] " neleai at seznam dot cz
2014-06-25 16:40 ` [Bug libc/17087] New: " Ondřej Bílka
2014-06-25 18:30 ` [Bug libc/17087] " kenatmit at gmail dot com
2014-06-26 8:38 ` fweimer at redhat dot com
2015-08-27 22:22 ` [Bug string/17087] " jsm28 at gcc dot gnu.org
2016-10-24 17:55 ` joseph at codesourcery dot com
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