* [Bug nptl/25098] nptl: ctype classification functions are not AS-Safe
[not found] <bug-25098-131@http.sourceware.org/bugzilla/>
@ 2019-10-14 12:34 ` fweimer at redhat dot com
2020-06-09 9:34 ` fweimer at redhat dot com
2021-05-27 0:32 ` adhemerval.zanella at linaro dot org
2 siblings, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2019-10-14 12:34 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=25098
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://sourceware.org/ml/libc-alpha/2019-10/msg00383.html
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From: "danglin at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/23296] Data race in setting function descriptor during lazy binding
Date: Mon, 14 Oct 2019 21:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=23296
John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #12019|0 |1
is obsolete| |
--- Comment #15 from John David Anglin <danglin at gcc dot gnu.org> ---
Created attachment 12039
--> https://sourceware.org/bugzilla/attachment.cgi?id=12039&action=edit
Patch to fix function descriptor race
With this patch, I'm not seeing any segmentation faults due to lazy binding in
testsuite. Still haven't worked on profile code.
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>From glibc-bugs-return-46396-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 00:41:44 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/23296] Data race in setting function descriptor during lazy binding
Date: Tue, 15 Oct 2019 00:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=23296
--- Comment #16 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to John David Anglin from comment #15)
> Created attachment 12039 [details]
> Patch to fix function descriptor race
>
> With this patch, I'm not seeing any segmentation faults due to lazy binding
> in testsuite. Still haven't worked on profile code.
Have you posted this for review on libc-alpha? It's looking like a good
solution.
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From: "dave.anglin at bell dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/23296] Data race in setting function descriptor during lazy binding
Date: Tue, 15 Oct 2019 12:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=23296
--- Comment #17 from dave.anglin at bell dot net ---
On 2019-10-14 8:41 p.m., carlos at redhat dot com wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=23296
>
> --- Comment #16 from Carlos O'Donell <carlos at redhat dot com> ---
> (In reply to John David Anglin from comment #15)
>> Created attachment 12039 [details]
>> Patch to fix function descriptor race
>>
>> With this patch, I'm not seeing any segmentation faults due to lazy binding
>> in testsuite. Still haven't worked on profile code.
> Have you posted this for review on libc-alpha? It's looking like a good
> solution.
Not yet. Want to finish updating profile code.
I have revised gcc trunk and gcc-9 branch to pass address of descriptor in
register %r22. The
binutils stub patch has been posted on binutils list and I'm going to install
it soon.
I've been working on changes to try to fix the ordering issues that are present
on PA 2.0 machines.
I have an update to __cffc() that I'm testing. For it to fully work, it needs
descriptors aligned on
double word boundaries. This allows descriptor to be updated with atomic
store.
There are subtle issue to PA 2.0 ordering that I don't fully understand and
they aren't clearly described
in architecture book. When one has a sequence like the following:
ldd x
bve x
ldd y
it would seem to me that the load of y must occur after x. Otherwise, the non
sequential execution of
loads and stores, and other instructions would be apparent even on UP machines
using simulated threads.
So, it would seem that the branch must be a barrier. I came to this conclusion
thinking about hppa64 which
uses the above sequence for indirect calls. It doesn't use an ordered load for
x and there isn't a way to
atomically update x and y together on hppa64 (no quad word store).
Dave
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>From glibc-bugs-return-46398-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 13:30:49 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25105] New: RFE: Reduce locale size.
Date: Tue, 15 Oct 2019 13:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25105
Bug ID: 25105
Summary: RFE: Reduce locale size.
Product: glibc
Version: 2.31
Status: NEW
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Priority: P2
Component: locale
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
With the update for ISO 14651 we have a huge expansion in the list of symbols
involved in collation and this has generated a huge amount of data for
collation, creating more than 80MiB of additional storage space in a given
install with all languages compiled into the locale-archive.
The benefit is that we now have sorting (collation) for all the new characters
added in the past 15 years... the downside is that takes up an additional
~80MiB for all the locales we support.
The collation data went from 425kib ot 3.3MiB alone in our stored sources in
the project git repo.
If size is an issue we recommend installing just C/POSIX and C.UTF-8 (from your
distro), or the specific language pack you need.
We, upstream, need to figure out a way to share the tables or reduce the space
used. All ideas welcome, this is not an easy problem to solve with the current
framework.
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Subject: [Bug locale/25105] RFE: Reduce compiled binary locale size.
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|RFE: Reduce locale size. |RFE: Reduce compiled binary
| |locale size.
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What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1546607
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Subject: [Bug locale/25105] RFE: Reduce compiled binary locale size.
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Peter Robinson <pbrobinson at gmail dot com> changed:
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CC| |pbrobinson at gmail dot com
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>From glibc-bugs-return-46402-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 13:39:03 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nptl/22852] Thread stack and heap caches
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Carlos O'Donell <carlos at redhat dot com> changed:
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CC| |carlos at redhat dot com
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| |/show_bug.cgi?id=1546605
--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
One way to harden is to use a tunable for a thread stack cache, and set that to
zero.
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/25106] New: Conflicting header file ax25.h between glibc headers and kernel headers
Date: Tue, 15 Oct 2019 14:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25106
Bug ID: 25106
Summary: Conflicting header file ax25.h between glibc headers
and kernel headers
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
We have known problems using glibc and kernel headers together.
This bug is specifically about ax25.h:
https://sourceware.org/glibc/wiki/Synchronizing_Headers
This bug impacts netrose.
CC net/proto-rose.o
In file included from /usr/include/netrose/rose.h:25:0,
from net/proto-rose.c:10:
/usr/include/netax25/ax25.h:73:1: error: conflicting types for 'ax25_address'
ax25_address;
^~~~~~~~~~~~
In file included from net/proto-rose.c:9:0:
/usr/include/linux/ax25.h:47:3: note: previous declaration of 'ax25_address'
was here
} ax25_address;
^~~~~~~~~~~~
(though indirectly found by people working on trinity).
It might be possible we need to just use the kernel headers, or maybe not.
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>From glibc-bugs-return-46404-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 14:03:08 2019
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Subject: [Bug network/25106] Conflicting header file ax25.h between glibc headers and kernel headers
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1400720
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>From glibc-bugs-return-46405-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 14:42:52 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
Date: Tue, 15 Oct 2019 14:42:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e7c8ffe4ec059da1523c093d6a240cd87d154df2
commit e7c8ffe4ec059da1523c093d6a240cd87d154df2
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Oct 15 16:41:51 2019 +0200
ldd: Print "not a dynamic executable" on standard error [BZ #24150]
Tested with the testsuite on x86_64-linux-gnu, and manually.
Reviewed-By: Richard W.M. Jones <rjones@redhat.com>
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>From glibc-bugs-return-46406-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 14:43:05 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in glibc 2.31.
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>From glibc-bugs-return-46407-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 14:52:17 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
I don't think this is a valid request. The line intentionally lines up with
the normal output (note the leading tab) which goes to stdout, so the intent is
to view this as a normal output, not as an error message.
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>From glibc-bugs-return-46408-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 14:59:40 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
But the current behavior isn't quite consistent.
$ ldd /sbin/ldconfig ; echo $?
statically linked
0
$ ldd /usr/bin/zgrep ; echo $?
not a dynamic executable
1
The first message and exit status comes from the dynamic linker itself.
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>From glibc-bugs-return-46409-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 15:02:42 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
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--- Comment #6 from Andreas Schwab <schwab@linux-m68k.org> ---
Of course, since the dynamic linker can only handle ELF files.
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
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--- Comment #7 from Florian Weimer <fweimer at redhat dot com> ---
I don't think the exit status difference is obvious. If it's indeed an error,
the message out to go to standard error. If it's not, then it matches the
statically linked case.
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--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> ---
All error messages are prefixed by "ldd: ". This message is not, thus it is
obviously not an error message.
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>From glibc-bugs-return-46412-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 15:10:56 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
Date: Tue, 15 Oct 2019 15:10:00 -0000
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--- Comment #9 from Florian Weimer <fweimer at redhat dot com> ---
But if it is not an error, why is the exit status 1? The glibc 2.30 behavior
is inconsistent.
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>From glibc-bugs-return-46413-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 15:28:18 2019
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25105] RFE: Reduce compiled binary locale size.
Date: Tue, 15 Oct 2019 15:28:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Tue, 15 Oct 2019, carlos at redhat dot com wrote:
> The benefit is that we now have sorting (collation) for all the new characters
> added in the past 15 years... the downside is that takes up an additional
> ~80MiB for all the locales we support.
Is this because of lots of locales having their own slightly different
collation, each of which ends up with a copy of the complete collation
data with a few small changes? (Since in a not-quite-current 2.30
installation, I see 186 locales sharing the same LC_COLLATE data, but also
lots of variants shared between smaller numbers of locales or not shared
at all.)
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>From glibc-bugs-return-46414-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 15 15:29:10 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
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--- Comment #10 from Andreas Schwab <schwab@linux-m68k.org> ---
Why is that a problem? It is obviously intented to give the callers a hint.
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>From glibc-bugs-return-46415-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 16 06:00:59 2019
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Subject: [Bug localedata/24409] Updates for TW locales
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--- Comment #5 from Wei-Lun Chao <bluebat at member dot fsf.org> ---
[PING]
Another experimental RPM package for testing L10N:
https://github.com/rpmsphere/noarch/raw/master/l/language-pack-sinitic-2019.10-1.noarch.rpm
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>From glibc-bugs-return-46416-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 16 14:35:56 2019
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Subject: [Bug dynamic-link/25087] ldconfig mishandles unusual .dynstr placement
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andreas Schwab <schwab@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=58e8f5fd2ba47b6dc47fd4d0a35e4175c7c87aaa
commit 58e8f5fd2ba47b6dc47fd4d0a35e4175c7c87aaa
Author: Andreas Schwab <schwab@suse.de>
Date: Wed Oct 9 17:46:47 2019 +0200
ldconfig: handle .dynstr located in separate segment (bug 25087)
To determine the load offset of the DT_STRTAB section search for the
segment containing it, instead of using the load offset of the first
segment.
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Fixed in 2.31.
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https://sourceware.org/bugzilla/show_bug.cgi?id=24900
--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7d3db434f910c23591f748a6d0ac3548af1048bb
commit 7d3db434f910c23591f748a6d0ac3548af1048bb
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 17 08:51:21 2019 +0200
Rename and split elf/tst-dlopen-aout collection of tests
From the beginning, elf/tst-dlopen-aout has exercised two different
bugs: (a) failure to report errors for a dlopen of the executable
itself in some cases (bug 24900) and (b) incorrect rollback of the
TLS modid allocation in case of a dlopen failure (bug 16634).
This commit replaces the test with elf/tst-dlopen-self for (a) and
elf/tst-dlopen-tlsmodid for (b). The latter tests use the
elf/tst-dlopen-self binaries (or iconv) with dlopen, so they are
no longer self-dlopen tests.
Tested on x86_64-linux-gnu and i686-linux-gnu, with a toolchain that
does not default to PIE.
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>From glibc-bugs-return-46421-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 17 06:55:30 2019
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Subject: [Bug dynamic-link/16634] Application calling dlopen("./a.out",...) may run into _dl_allocate_tls_init: Assertion `listp != ((void *)0)' failed!
Date: Thu, 17 Oct 2019 06:55:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7d3db434f910c23591f748a6d0ac3548af1048bb
commit 7d3db434f910c23591f748a6d0ac3548af1048bb
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Oct 17 08:51:21 2019 +0200
Rename and split elf/tst-dlopen-aout collection of tests
From the beginning, elf/tst-dlopen-aout has exercised two different
bugs: (a) failure to report errors for a dlopen of the executable
itself in some cases (bug 24900) and (b) incorrect rollback of the
TLS modid allocation in case of a dlopen failure (bug 16634).
This commit replaces the test with elf/tst-dlopen-self for (a) and
elf/tst-dlopen-tlsmodid for (b). The latter tests use the
elf/tst-dlopen-self binaries (or iconv) with dlopen, so they are
no longer self-dlopen tests.
Tested on x86_64-linux-gnu and i686-linux-gnu, with a toolchain that
does not default to PIE.
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>From glibc-bugs-return-46422-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 17 07:26:37 2019
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Subject: [Bug dynamic-link/24304] Lazy binding failure during ELF constructors/destructors is not fatal
Date: Thu, 17 Oct 2019 07:26:00 -0000
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>From glibc-bugs-return-46423-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 17 09:21:29 2019
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Subject: [Bug dynamic-link/24304] Lazy binding failure during ELF constructors/destructors is not fatal
Date: Thu, 17 Oct 2019 09:21:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://sourceware.org/ml/libc-alpha/2019-10/msg00516.html
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>From glibc-bugs-return-46424-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 17 09:29:37 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25112] New: Avoid malloc failure after running ELF constructors in dlopen
Date: Thu, 17 Oct 2019 09:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25112
Bug ID: 25112
Summary: Avoid malloc failure after running ELF constructors in
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-
dlopen calls add_to_global (from dl_open_worker) after running ELF constructors
for the new objects. At this point, recovery from malloc failure is quite
complicated: We need to run the ELF destructors and close all opened objects.
The current implementation does none of this and leaves the process in an
inconsistent state.
The proper fix to deal with this is to allocate the required memory before
running ELF constructors.
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>From glibc-bugs-return-46425-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 17 10:32:26 2019
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Subject: [Bug dynamic-link/25112] Avoid malloc failure after running ELF constructors in dlopen
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Florian Weimer <fweimer at redhat dot com> changed:
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Status|NEW |ASSIGNED
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>From glibc-bugs-return-46426-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 18 01:00:36 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/20338] Parsing of /etc/gshadow can return bad pointers causing segfaults in applications
Date: Fri, 18 Oct 2019 01:00:00 -0000
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Jason Perrin <jasonvperrin at gmail dot com> changed:
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CC| |jasonvperrin at gmail dot com
--- Comment #3 from Jason Perrin <jasonvperrin at gmail dot com> ---
This is affecting us too (specifically this bug, leading to
https://github.com/systemd/systemd/issues/6512 in systemd, which then leads to
https://bugs.launchpad.net/ubuntu/+source/tomcat9/+bug/1848614 when installing
tomcat9 on Ubuntu bionic). Any updates on this, the patch attached, or anything
we can do to help get the patch merged?
Thanks for your work on glibc!
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>From glibc-bugs-return-46427-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 18 11:19:22 2019
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From: "oleg_shishlyannikov at epam dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nscd/24949] High CPU load by nscd service
Date: Fri, 18 Oct 2019 11:19:00 -0000
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--- Comment #3 from Oleg Shishlyannikov <oleg_shishlyannikov at epam dot com> ---
Hi, there are config files:
nsswitch.conf:
passwd: files sss
shadow: files sss
group: files sss
hosts: files dns
bootparams: nisplus [NOTFOUND=RETURN] files
ethers: files
netmasks: files
networks: files
protocols: files
rpc: files
services: files sss
sudoers: files [SUCCESS=RETURN] sss [SUCCESS=RETURN] ldap
netgroup: files sss
publickey: nisplus
automount: files sss
aliases: files nisplus
and nscd.conf:
server-user nscd
debug-level 0
paranoia no
enable-cache passwd no
positive-time-to-live passwd 600
negative-time-to-live passwd 20
suggested-size passwd 211
check-files passwd yes
shared passwd yes
max-db-size passwd 33554432
auto-propagate passwd yes
persistent passwd no
enable-cache group no
positive-time-to-live group 3600
negative-time-to-live group 60
suggested-size group 211
check-files group yes
shared group yes
max-db-size group 33554432
auto-propagate group yes
persistent group no
enable-cache hosts yes
positive-time-to-live hosts 7200
negative-time-to-live hosts 20
suggested-size hosts 211
check-files hosts yes
shared hosts yes
max-db-size hosts 33554432
persistent hosts no
enable-cache services no
positive-time-to-live services 28800
negative-time-to-live services 20
suggested-size services 211
check-files services yes
shared services yes
max-db-size services 33554432
also, services which uses libselinux.so (lsof):
systemd
systemd-j
lvmetad
systemd-u
auditd
polkitd
dbus-daem
VGAuthSer
vmtoolsd
smartd
gssproxy
systemd-l
sshd
tuned
rsyslogd
crond
omiserver
master
qmgr
rpcbind
nscd
omiagent
omiagent
sshd
sudo
pickup
sssd
sssd_be
sssd_nss
sssd_pam
sssd_auto
sosreport
systemd-h
journalct
omiagent
showq
lsof
Actually, we also tried to reproduce this without any result, so we used remote
gdb session to retrieve the problem. At the moment this action seems to be
impossible but i'm trying to create script to reproduce it. Note, this issue
shows only in cases where selinux policies related to nscd are set to enforcing
mode (it works with "setenforce 0" and separate rpm with .pp file). If we walk
deeper to glibc sources, there are several "static struct service_user *" which
contains handle of loaded "libnss_files.so". This means that there are at least
two handles of this library. Two loaded handles means two calls of init
function "register_traced_files" on same pointers because "dlopen" will return
same pointer on repeatedly loaded .so.
P.S.
I can't attach sosreport because company policies, but i can say that there are
no any suspicious things in logs, based on them, all working fine.
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>From glibc-bugs-return-46428-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 18 11:33:27 2019
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From: "oleg_shishlyannikov at epam dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nscd/24949] High CPU load by nscd service
Date: Fri, 18 Oct 2019 11:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=24949
--- Comment #4 from Oleg Shishlyannikov <oleg_shishlyannikov at epam dot com> ---
I forgot to append, this occurs after update of few packages:
selinux-policy-targeted-3.13.1-229.el7.noarch ->
selinux-policy-targeted-3.13.1-229.el7_6.6.noarch
selinux-policy-3.13.1-229.el7.noarch ->
selinux-policy-3.13.1-229.el7_6.6.noarch
kernel-3.10.0-957.el7.x86_64 -> kernel-3.10.0-957.1.3.el7.x86_64
Thanks!
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>From glibc-bugs-return-46430-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 18 21:14:34 2019
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Subject: [Bug dynamic-link/25114] RFE: Provide dlopen API(s) that allows caller to identify resolution scope (required by ASAN).
Date: Fri, 18 Oct 2019 21:14:00 -0000
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----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1449604
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>From glibc-bugs-return-46429-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 18 21:14:10 2019
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Subject: [Bug dynamic-link/25114] New: RFE: Provide dlopen API(s) that allows caller to identify resolution scope (required by ASAN).
Date: Fri, 18 Oct 2019 21:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25114
Bug ID: 25114
Summary: RFE: Provide dlopen API(s) that allows caller to
identify resolution scope (required by ASAN).
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
The ASAN interposer for dlopen cannot accurately interpose dlopen because when
it itself calls dlopen the dynamic loader considers ASAN to be the caller and
the scope resolution for loading the library starts there. Instead what you
want is for ASAN to be able to call dlopen but with the search scope of the
library it is interposing, which may not even be known. Either way, we need
some new kind of API here.
The following example shows the situation:
#include <dlfcn.h>
#include <iostream>
int main()
{
void *handle = dlopen("libb.so", RTLD_NOW);
if (handle == NULL) {
std::cout << "Failed to load libb.so" << std::endl;
}
}
#mkdir lib
#g++ --sanitize=address -Wl,-rpath='$ORIGIN/lib' -Wl,--enable-new-dtags -ldl -o
main main.cpp
#cd lib;
Create libb.so:
int foo()
{
return 1;
}
g++ -fPIC -shared b.C -o libb.so
Actual results:
strace ./main 2>&1 | grep libb.so
open("/opt/rh/devtoolset-6/root/usr/lib/../lib64/tls/libb.so",
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
:
<snipped>
:
open("/usr/lib64/libb.so", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or
directory)
write(1, "Failed to load libb.so\n", 23Failed to load libb.so
Expected results:
strace ./main 2>&1 | grep libb.so
open("/opt/rh/devtoolset-6/root/usr/lib64/tls/libb.so", O_RDONLY) = -1 ENOENT
(No such file or directory)
open("/root/cc/lib/libb.so", O_RDONLY) = 3
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>From glibc-bugs-return-46431-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 19 00:36:40 2019
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Subject: [Bug locale/25115] New: Guard against divide by zero with corrupted locale archives
Date: Sat, 19 Oct 2019 00:36:00 -0000
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Bug ID: 25115
Summary: Guard against divide by zero with corrupted locale
archives
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: locale
Assignee: unassigned at sourceware dot org
Reporter: dj at redhat dot com
Target Milestone: ---
_nl_load_locale_from_archive() checks for a zero size, but
divides by both (size) and (size-2). The check should be extended to guard
against a size of two or less.
Originally seen in Fedora:
https://bugzilla.redhat.com/show_bug.cgi?id=1470124
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>From glibc-bugs-return-46432-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 19 00:37:08 2019
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Subject: [Bug locale/25115] Guard against divide by zero with corrupted locale archives
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>From glibc-bugs-return-46433-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 19 00:42:23 2019
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Subject: [Bug locale/25115] Guard against divide by zero with corrupted locale archives
Date: Sat, 19 Oct 2019 00:42:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by DJ Delorie <dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ef21bd2d8c6805c0c186a01f7c5039189f51b8c4
commit ef21bd2d8c6805c0c186a01f7c5039189f51b8c4
Author: DJ Delorie <dj@redhat.com>
Date: Fri Oct 18 17:15:52 2019 -0400
loadarchive: guard against locale-archive corruption (Bug #25115)
_nl_load_locale_from_archive() checks for a zero size, but
divides by both (size) and (size-2). Extend the check to
guard against a size of two or less.
Tested by manually corrupting locale-archive and running a program
that calls setlocale() with LOCPATH unset (size is typically very
large).
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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>From glibc-bugs-return-46434-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 19 00:46:58 2019
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Subject: [Bug locale/25115] Guard against divide by zero with corrupted locale archives
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----------------------------------------------------------------------------
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--- Comment #2 from dj at redhat dot com <dj at redhat dot com> ---
Fix committed.
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>From glibc-bugs-return-46435-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 19 09:24:47 2019
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From: "ioctl at ya dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nptl/25118] New: Excess futex syscall while using pthread_cond_wait()
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Bug ID: 25118
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Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: ioctl at ya dot ru
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 12045
--> https://sourceware.org/bugzilla/attachment.cgi?id=12045&action=edit
pthread_cond_wait() test
I have the simple test program (please, see attachment).
I run it, then run strace -tt -p _main_process_pid_ and get output like this:
11:44:59.790924 restart_syscall(<... resuming interrupted nanosleep ...>) = 0
11:45:00.104353 futex(0x5645bdddb0ec, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
11:45:01.104260 futex(0x5645bdddb080, FUTEX_WAKE_PRIVATE, 1) = 0
11:45:01.104533 write(2, "w", 1) = 1
11:45:01.104889 nanosleep({tv_sec=1, tv_nsec=0}, 0x7ffe40eae640) = 0
11:45:02.105349 futex(0x5645bdddb0e8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
11:45:03.104367 futex(0x5645bdddb080, FUTEX_WAKE_PRIVATE, 1) = 0
11:45:03.104563 write(2, "w", 1) = 1
11:45:03.104876 nanosleep({tv_sec=1, tv_nsec=0}, 0x7ffe40eae640) = 0
11:45:04.105407 futex(0x5645bdddb0ec, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
11:45:05.104502 futex(0x5645bdddb080, FUTEX_WAKE_PRIVATE, 1) = 0
11:45:05.104684 write(2, "w", 1) = 1
...
There are futex wake calls that wakes no one process. These syscalls are
performed by the pthread_mutex_unlock() calls.
It's because glibc __pthread_cond_wait_common() calls
__pthread_mutex_cond_lock(), that sets mutex->__data.__lock to value 2.
There are a lot of comments inside the code, and I sure there was a reason to
do so, but I cannot understand it.
In cases like a program attached these functions seems doesn't work optimal.
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>From glibc-bugs-return-46436-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Oct 19 21:50:13 2019
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From: "slanyjan89 at seznam dot cz" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/25119] New: Change Czech weekday names to lowercase
Date: Sat, 19 Oct 2019 21:50:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25119
Bug ID: 25119
Summary: Change Czech weekday names to lowercase
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: slanyjan89 at seznam dot cz
CC: libc-locales at sourceware dot org
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Hello,
in the Czech locale data (cs_CZ), weekday names in 'abday' and 'day' are
currently capitalized. However, orthography rules demand them to be all
lowercase. General usage conforms to this rule. The capitalized version is
almost non-existent and the Czech Language Institute discourages its use.
As an example, consider the following text on formatting dates by the Czech
Language Institute (see the italicized text):
http://prirucka.ujc.cas.cz/?id=810
The relevant CLDR data is here, showing the lowercase names both in full and
abbreviated form:
https://www.unicode.org/cldr/charts/36/summary/cs.html#2079
I can supply the patch if required.
Thanks for considering the issue.
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/25119] Change Czech weekday names to lowercase
Date: Sat, 19 Oct 2019 21:55:00 -0000
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--- Comment #1 from Jan Slaný <slanyjan89 at seznam dot cz> ---
I'm sorry, the linked article contains only examples of month days. The
following article explicitly states that lowercase should be used and provides
an example,
see the third line from the bottom ("pondělí, úterý").
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Subject: [Bug localedata/25119] Change Czech weekday names to lowercase
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--- Comment #2 from Jan Slaný <slanyjan89 at seznam dot cz> ---
Here is the article:
http://prirucka.ujc.cas.cz/?id=180
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://sourceware.org/ml/libc-alpha/2019-10/msg00534.html
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Subject: [Bug locale/25123] New: Heap use-after-free in setlocale
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Bug ID: 25123
Summary: Heap use-after-free in setlocale
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As analyzing glibc source code
(https://code.woboq.org/userspace/glibc/locale/setlocale.c.html), I see that
when a new locale is set up for a category, setlocale allocates a memory block
to save the new name, and then links it to a structure:
Line setlocale.c:434 (allocate memory to hold the locale name):
---------------------------------------
newname[0] = __strdup (newname[0]);
---------------------------------------
Line setlocale.c:455 (save the new name):
---------------------------------------
setname (category, newname[0]);
setname (LC_ALL, composite);
---------------------------------------
Line setlocale.c:469 (return the new name as return value of setlocale):
---------------------------------------
return (char *) newname[0];
---------------------------------------
Line setlocale.c:195, setname source:
---------------------------------------
setname (int category, const char *name)
{
if (_nl_global_locale.__names[category] == name)
return;
if (_nl_global_locale.__names[category] != _nl_C_name)
free ((char *) _nl_global_locale.__names[category]);
_nl_global_locale.__names[category] = name;
}
---------------------------------------
In setname function, the allocated memory chunk is saved in
_nl_global_locale.__names. The old chunk of the same category in
_nl_global_locale.__names is freed. So there should be use-after-free bug here.
Here is the Proof of Concepts:
--------------------------------------
root@pen:~/fuzz# cat test_setlocale.c
#include <stdlib.h>
#include <stdio.h>
#include <locale.h>
#include <string.h>
int main()
{
char* oldLocale = setlocale(LC_NUMERIC, "C.UTF-8");
printf("oldLocale = %s\n", oldLocale);
setlocale(LC_NUMERIC, "en_US.UTF-8");
char* foo = strdup("fakename");
printf("oldLocale = %s\n", oldLocale);
setlocale(LC_NUMERIC, oldLocale);
return 0;
}
root@pen:~/fuzz# gcc test_setlocale.c -O0 -m32 -ggdb -o test_setlocale
root@pen:~/fuzz# ./test_setlocale
oldLocale = C.UTF-8
oldLocale = fakename
root@pen:~/fuzz#
--------------------------------------
As you can see, oldLocale is overwritten with some fake data.
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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
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Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
The reproducer is invalid. The return value of setlocale is only valid until
the next setlocale call. This is clearly specified in ISO C and POSIX, and the
manual also warns about that.
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>From glibc-bugs-return-46444-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 13:58:14 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/25118] Excess futex syscall while using pthread_cond_wait()
Date: Mon, 21 Oct 2019 13:58:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |carlos at redhat dot com
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Aleksey K. from comment #0)
> It's because glibc __pthread_cond_wait_common() calls
> __pthread_mutex_cond_lock(), that sets mutex->__data.__lock to value 2.
> There are a lot of comments inside the code, and I sure there was a reason
> to do so, but I cannot understand it.
>
> In cases like a program attached these functions seems doesn't work optimal.
Please post to libc-help if you need help analyzing the condvar algorithm and
finding spurious wake scenarios. This is not something that we should discuss
in a bug report.
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>From glibc-bugs-return-46445-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 14:46:08 2019
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Subject: [Bug libc/12379] glibc-2.12.2 fails to build with binutils-2.21.51.0.4
Date: Mon, 21 Oct 2019 14:46:00 -0000
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wxsxsdz at gmail dot com changed:
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--- Comment #3 from wxsxsdz at gmail dot com ---
*** Bug 25122 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-46446-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 15:12:58 2019
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From: "v.manhnd at vincss dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25123] Heap use-after-free in setlocale
Date: Mon, 21 Oct 2019 15:12:00 -0000
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--- Comment #2 from Nguyễn Đức Mạnh <v.manhnd at vincss dot net> ---
(In reply to Florian Weimer from comment #1)
> The reproducer is invalid. The return value of setlocale is only valid
> until the next setlocale call. This is clearly specified in ISO C and
> POSIX, and the manual also warns about that.
So what is the return value used for?
Let's look at the following code of vutil.c of Perl
(https://sourceware.org/bugzilla/show_bug.cgi?id=25123):
============================================================
631 # ifndef USE_POSIX_2008_LOCALE
632
633 const char * locale_name_on_entry;
634
635 LC_NUMERIC_LOCK(0); /* Start critical section */
636
637 locale_name_on_entry = setlocale(LC_NUMERIC, NULL);
638 if ( strNE(locale_name_on_entry, "C")
639 && strNE(locale_name_on_entry, "POSIX"))
640 {
641 setlocale(LC_NUMERIC, "C");
642 }
.............
711 # ifndef USE_POSIX_2008_LOCALE
710
711 if (locale_name_on_entry) {
712 setlocale(LC_NUMERIC, locale_name_on_entry);
713 }
============================================================
Perl uses the code above to recover locale_name_on_entry after set it to "C".
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>From glibc-bugs-return-46447-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 15:17:50 2019
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Subject: [Bug locale/25123] Heap use-after-free in setlocale
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
The Perl coded looks invalid, particularly for multi-threaded code. On POSIX,
it should use uselocale to temporarily change the locale for the current
thread.
That being said, you can make a copy of the returned string using strdup, and
use that in the second setlocale call.
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>From glibc-bugs-return-46448-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 15:22:28 2019
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Subject: [Bug libc/25094] A successful dlclose() seems to clear the last dynamic link error
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Konrad Schwarz <konrad.schwarz at siemens dot com> changed:
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--- Comment #3 from Konrad Schwarz <konrad.schwarz at siemens dot com> ---
Please see comment 2.
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>From glibc-bugs-return-46449-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 16:11:41 2019
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From: "v.manhnd at vincss dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25123] Heap use-after-free in setlocale
Date: Mon, 21 Oct 2019 16:11:00 -0000
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--- Comment #4 from Nguyễn Đức Mạnh <v.manhnd at vincss dot net> ---
(In reply to Florian Weimer from comment #3)
> The Perl coded looks invalid, particularly for multi-threaded code. On
> POSIX, it should use uselocale to temporarily change the locale for the
> current thread.
>
> That being said, you can make a copy of the returned string using strdup,
> and use that in the second setlocale call.
Please explain the usage of the return value of setlocale. As
https://linux.die.net/man/3/setlocale says, "The string returned is such that a
subsequent call with that string and its associated category will restore that
part of the process's locale." I see Perl follows this. Usage of strdup is not
mentioned anywhere in documents.
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>From glibc-bugs-return-46450-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 16:19:46 2019
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Subject: [Bug locale/25123] Heap use-after-free in setlocale
Date: Mon, 21 Oct 2019 16:19:00 -0000
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--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
https://pubs.opengroup.org/onlinepubs/9699919799/functions/setlocale.html
"The string returned by setlocale() is such that a subsequent call with that
string and its associated category shall restore that part of the global
locale. The application shall not modify the string returned. The returned
string pointer might be invalidated or the string content might be overwritten
by a subsequent call to setlocale(). The returned pointer might also be
invalidated if the calling thread is terminated."
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>From glibc-bugs-return-46451-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 17:38:55 2019
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
POSIX is deliberately vague on this. I think it's one of the classic BSD vs
SysV differences. Solaris apparently implements the SysV (no clearing of the
error indicator on successful dl* function calls), glibc follows the BSD
behavior (a successful call clears the error indicator).
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>From glibc-bugs-return-46452-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 21 23:10:52 2019
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From: "v.manhnd at vincss dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25123] Heap use-after-free in setlocale
Date: Mon, 21 Oct 2019 23:10:00 -0000
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--- Comment #6 from Nguyễn Đức Mạnh <v.manhnd at vincss dot net> ---
(In reply to Andreas Schwab from comment #5)
> https://pubs.opengroup.org/onlinepubs/9699919799/functions/setlocale.html
>
> "The string returned by setlocale() is such that a subsequent call with that
> string and its associated category shall restore that part of the global
> locale. The application shall not modify the string returned. The returned
> string pointer might be invalidated or the string content might be
> overwritten by a subsequent call to setlocale(). The returned pointer might
> also be invalidated if the calling thread is terminated."
Thanks. It seems that we should the return value is useless, except in
setlocale(cat, NULL)
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>From glibc-bugs-return-46453-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 22 08:48:54 2019
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Subject: [Bug locale/25123] Heap use-after-free in setlocale
Date: Tue, 22 Oct 2019 08:48:00 -0000
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--- Comment #7 from Florian Weimer <fweimer at redhat dot com> ---
You can make a copy of the return value before the next call to setlocale.
However, with glibc, you should really be using uselocale for this construct.
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>From glibc-bugs-return-46454-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 22 08:55:24 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/25123] Heap use-after-free in setlocale
Date: Tue, 22 Oct 2019 08:55:00 -0000
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--- Comment #8 from Andreas Schwab <schwab@linux-m68k.org> ---
That's what perl already does on modern systems (USE_POSIX_2008_LOCALE).
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>From glibc-bugs-return-46455-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 22 23:49:40 2019
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From: "nigel.stewart at opengear dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/25127] New: elf/Makefile uses @ sed sentinal, breaks for build paths with @
Date: Tue, 22 Oct 2019 23:49:00 -0000
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Bug ID: 25127
Summary: elf/Makefile uses @ sed sentinal, breaks for build
paths with @
Product: glibc
Version: 2.4
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: nigel.stewart at opengear dot com
CC: carlos at redhat dot com
Target Milestone: ---
glibc-2.5 is part of an embedded Linux build on Jenkins infrastructure.
We found that glibc was erroring in situations where there was a @ in the
workspace path because a Makefile is using @ as a sentinel for sed.
This patch seems to resolve the issue.
Inspection of the current glibc also appears to be still using @.
Jenkins uses the following naming scheme for multiple (parallel) jobs:
/var/jenkins/workspace/JobName
/var/jenkins/workspace/JobName@2
/var/jenkins/workspace/JobName@3
...
What we observed is success but only in the first situation above, without the
@.
+diff -ur glibc-2.5/elf/Makefile glibc-2.5.new/elf/Makefile
+--- glibc-2.5/elf/Makefile 2019-10-18 18:35:55.794959850 +1000
++++ glibc-2.5.new/elf/Makefile 2019-10-18 18:35:59.350943357 +1000
+@@ -268,7 +268,7 @@
+
+ $(objpfx)librtld.mk: $(objpfx)librtld.map Makefile
+ LC_ALL=C \
+- sed -n 's@^$(common-objpfx)\([^(]*\)(\([^)]*\.os\)) *.*$$@\1 \2@p' \
++ sed -n 's#^$(common-objpfx)\([^(]*\)(\([^)]*\.os\)) *.*$$#\1 \2#p' \
+ $< | \
+ while read lib file; do \
+ case $$lib in \
+@@ -276,7 +276,7 @@
+ LC_ALL=C fgrep -l /$$file \
+ $(common-objpfx)stamp.os $(common-objpfx)*/stamp.os | \
+ LC_ALL=C \
+- sed 's@^$(common-objpfx)\([^/]*\)/stamp\.os$$@rtld-\1'" +=$$file@"\
++ sed 's#^$(common-objpfx)\([^/]*\)/stamp\.os$$#rtld-\1'" +=$$file#"\
+ ;; \
+ */*.a) \
+ echo rtld-$${lib%%/*} += $$file ;; \
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>From glibc-bugs-return-46456-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 23 09:56:06 2019
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Subject: [Bug localedata/23132] Missing transliterations in Miscellaneous Mathematical Symbols-A/B Unicode blocks
Date: Wed, 23 Oct 2019 09:56:00 -0000
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Assignee|unassigned at sourceware dot org |arjun.is at lostca dot se
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>From glibc-bugs-return-46457-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 23 14:06:17 2019
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Subject: [Bug dynamic-link/25112] dlopen must not make new objects accessible when it still can fail with an error
Date: Wed, 23 Oct 2019 14:06:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Avoid malloc failure after |dlopen must not make new
|running ELF constructors in |objects accessible when it
|dlopen |still can fail with an
| |error
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
The problem is more general. This loop in dl_open_worker adds new maps to the
scope of maps that already exist when dlopen was called:
/* If the file is not loaded now as a dependency, add the search
list of the newly loaded object to the scope. */
bool any_tls = false;
unsigned int first_static_tls = new->l_searchlist.r_nlist;
for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
{
struct link_map *imap = new->l_searchlist.r_list[i];
int from_scope = 0;
/* If the initializer has been called already, the object has
not been loaded here and now. */
if (imap->l_init_called && imap->l_type == lt_loaded)
…
/* First terminate the extended list. Otherwise a thread
might use the new last element and then use the garbage
at offset IDX+1. */
imap->l_scope[cnt + 1] = NULL;
atomic_write_barrier ();
imap->l_scope[cnt] = &new->l_searchlist;
A concurrent dlsym call or lazy binding operation therefore has access to the
new map at this point. But subsequent malloc calls can still fail, resulting in
a corrupted overall state. This is simlar to the originally reported
add_to_global issue, but it involves different allocations.
We need to make objects available in this way before calling ELF constructors
because they may use dlsym or lazy binding (including on other threads). That
part is unavoidable. But after bug 24304, recoverable dlopen failure is no
longer possible at this point, so we will eventually reach a consistent process
state, once the constructors have run.
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Subject: [Bug dynamic-link/17645] RFE: Improve performance of dynamic loader for deeply nested DSO dependencies.
Date: Wed, 23 Oct 2019 15:20:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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Assignee|unassigned at sourceware dot org |carlos at redhat dot com
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>From glibc-bugs-return-46459-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 23 15:40:15 2019
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Subject: [Bug dynamic-link/25129] New: AArch64 specifies for lib64 and lib for ld.so installation.
Date: Wed, 23 Oct 2019 15:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25129
Bug ID: 25129
Summary: AArch64 specifies for lib64 and lib for ld.so
installation.
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
It appears that the AArch64 ABI for ELF doesn't specify the name of the program
interpreter and the current glibc installation does this:
LIBC_SLIBDIR_RTLDDIR([lib64], [lib])
Which means by default we get:
/lib64/ld-linux-aarch64.so.1 -> ld-2.xx.yy.so
/lib/ld-linux-aarch64.so.1 -> ../lib64/ld-2.xx.yy.so
We should really only have /lib64/ld-linux-aarch64.so.1.
However, there might be some history here that we don't know, so Arm needs to
look at this and potentially update the AArch64 ABI to specify this more
clearly.
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Wed, 23 Oct 2019 15:40:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1255729
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Wed, 23 Oct 2019 15:42:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |nszabolcs at gmail dot com
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Szabolcs,
Do you have any idea of the history behind this issue?
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
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Peter Robinson <pbrobinson at gmail dot com> changed:
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CC| |pbrobinson at gmail dot com
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>From glibc-bugs-return-46463-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 23 16:22:32 2019
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Wed, 23 Oct 2019 16:22:00 -0000
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
RISC-V and S390x do the same. But why is that a problem?
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>From glibc-bugs-return-46464-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 23 16:27:58 2019
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Wed, 23 Oct 2019 16:27:00 -0000
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
Note that you cannot drop /lib/ld-linux-aarch64.so.1 since that's what all
existing binaries use.
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>From glibc-bugs-return-46465-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 23 16:41:57 2019
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
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--- Comment #4 from Szabolcs Nagy <nszabolcs at gmail dot com> ---
i dont know the history, but the ABI name for the dynlinker is
/lib/ld-linux-aarch64{_be}{_ilp32}.so.1
that's what's hardcoded into gcc (and binutils too, but i'm not
sure why ld needs to know the name, it always comes from gcc)
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Thu, 24 Oct 2019 02:42:00 -0000
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--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Szabolcs Nagy from comment #4)
> i dont know the history, but the ABI name for the dynlinker is
>
> /lib/ld-linux-aarch64{_be}{_ilp32}.so.1
>
> that's what's hardcoded into gcc (and binutils too, but i'm not
> sure why ld needs to know the name, it always comes from gcc)
Do we have this documented in a formal ABI document?(In reply to Andreas Schwab
from comment #2)
> RISC-V and S390x do the same. But why is that a problem?
It broke some expectations in pax-utils, and so I wanted to seek clarification
from upstream about this.
It looks like I'll be closing this as CLOSED/INVALID if Szabolcs says this is
well and truly the ABI.
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-10-24
Ever confirmed|0 |1
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Nigel,
Nice work! Please post your patch to libc-alpha@sourceware.org. It falls below
the 15 lines for legally significant work so we could accept your patch without
a copyright assignment
(https://sourceware.org/glibc/wiki/Contribution%20checklist).
Please have a look at the contribution checklist for posting the patch. Thanks
again for the bug report and fix. The code in question is still present on
master.
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>From glibc-bugs-return-46468-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 24 08:13:01 2019
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From: "nszabolcs at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Thu, 24 Oct 2019 08:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25129
--- Comment #6 from Szabolcs Nagy <nszabolcs at gmail dot com> ---
(In reply to Carlos O'Donell from comment #5)
> It broke some expectations in pax-utils, and so I wanted to seek
> clarification from upstream about this.
what was broken?
e.g. the musl dynlinker name on all targets is
/lib/ld-musl-{ARCH}{SUBARCH}.so.1
and i don't remember pax-utils being broken.
> It looks like I'll be closing this as CLOSED/INVALID if Szabolcs says this
> is well and truly the ABI.
it is in the sysv abi spec for aarch64 which is not public (yet).
but even if it was not documented anywhere it is the de facto abi.
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>From glibc-bugs-return-46469-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 24 10:08:12 2019
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
Date: Thu, 24 Oct 2019 10:08:00 -0000
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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> ---
(In reply to Andreas Schwab from comment #3)
> Note that you cannot drop /lib/ld-linux-aarch64.so.1 since that's what all
> existing binaries use.
That wasn't clear to me. Thanks for the confirmation. (The ABI manual appears
to be silent on this matter.)
Having a duplicate entry in /lib64 does not seem too bad, considering that the
program interpreter is also used for linking. Therefore, placing it in /lib64
along with the other dynamic shared objects makes some sense.
I'm not sure if anything broke in pax-utils as a result, the downstream bug
doesn't really claim that.
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>From glibc-bugs-return-46470-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 24 13:23:23 2019
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Received: (qmail 81465 invoked by uid 48); 24 Oct 2019 13:23:18 -0000
From: "helugang at huawei dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/25131] New: memcpy perfomance problem with ARM 32 A9be due to high cache-misses
Date: Thu, 24 Oct 2019 13:23:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25131
Bug ID: 25131
Summary: memcpy perfomance problem with ARM 32 A9be due to high
cache-misses
Product: glibc
Version: 2.27
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: malloc
Assignee: unassigned at sourceware dot org
Reporter: helugang at huawei dot com
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we found memcpy performance issue with arm32a9be after update glibc from 2.11
to 2.27 while running the benchmark test.
Acroding to our test the memcpy performance especially in memcpy_1m.
TestItem glibc-2.21 glibc-2.27
memcpy_1m 405425.257 484409.2213 19.48%
420772.5153 495477.9881 17.75%
400903.1756 499179.8534 24.51%
415716.1041 527041.1533 26.78%
396904.9904 492982.5846 24.21%
almost 20% more time cost.
We notice there are more cache-misses count in memcpy through perf tool:
Glibc-2.27
37871160 cache-misses # 1.877 M/sec
Glibc-2.21
30876849 cache-misses # 1.527 M/sec
PLD is not used in memcpy since ae65139d140ac85808c0666c3636f44dc2d950ee in
memcpy_impl.S
392 #ifdef USE_VFP
393 /* Don't use PLD. Instead, read some data in advance of the
current
394 copy position into a register. This should act like a PLD
395 operation but we won't have to repeat the transfer. */
396
397 vldr d3, [src, #0]
398 vldr d4, [src, #64]
399 vldr d5, [src, #128]
400 vldr d6, [src, #192]
401 vldr d7, [src, #256]
402
403 vldr d0, [src, #8]
404 vldr d1, [src, #16]
405 vldr d2, [src, #24]
406 add src, src, #32
maybe that will lead to more cache-misses in our platform.
Should you have there any suggestion about this issue ?
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>From glibc-bugs-return-46471-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 24 13:42:57 2019
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Subject: [Bug dynamic-link/25129] AArch64 specifies for lib64 and lib for ld.so installation.
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #8 from Carlos O'Donell <carlos at redhat dot com> ---
Thanks to everyone who commented. I'm going to close this as RESOLVED/INVALID
then because it's ABI that we have /lib/ld-linux-aarch64.so.1, and
/lib64/ld-linux-aarch64.so.1.
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>From glibc-bugs-return-46472-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 24 21:59:19 2019
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dj at redhat dot com <dj at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from dj at redhat dot com <dj at redhat dot com> ---
Sorry, forgot to tag the commit.
Fixed in 97476447edff96e526daa1a22d6ed3665181ff93
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>From glibc-bugs-return-46473-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 24 22:13:32 2019
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Subject: [Bug libc/24824] test-in-container does not install charmap files compatible with localedef
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
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>From glibc-bugs-return-46474-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 11:18:27 2019
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Subject: [Bug nptl/22337] pthread_join incorrectly fails for a detached running thread
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--- Comment #10 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
So accordingly to note 0004238 (if I read it correctly), this bug is invalid.
Could you confirm Florian?
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>From glibc-bugs-return-46475-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 11:25:24 2019
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #11 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Adhemerval Zanella from comment #10)
> So accordingly to note 0004238 (if I read it correctly), this bug is
> invalid. Could you confirm Florian?
I agree, I should have closed our bug once the clarification from the Austin
Group arrived. Thanks!
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>From glibc-bugs-return-46476-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 16:10:36 2019
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From: "arjun.is at lostca dot se" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/23132] Missing transliterations in Miscellaneous Mathematical Symbols-A/B Unicode blocks
Date: Fri, 25 Oct 2019 16:10:00 -0000
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Arjun Shankar <arjun.is at lostca dot se> changed:
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>From glibc-bugs-return-46477-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 16:10:57 2019
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Subject: [Bug malloc/22405] Audit tcache code for potential integer overflows
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>From glibc-bugs-return-46478-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 17:47:54 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/23132] Missing transliterations in Miscellaneous Mathematical Symbols-A/B Unicode blocks
Date: Fri, 25 Oct 2019 17:47:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Arjun Shankar <arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=513aaa0d782f8fae36732d06ca59d658149f0139
commit 513aaa0d782f8fae36732d06ca59d658149f0139
Author: Arjun Shankar <arjun@redhat.com>
Date: Wed Oct 23 18:51:29 2019 +0200
Add Transliterations for Unicode Misc. Mathematical Symbols-A/B [BZ #23132]
This commit adds previously missing transliterations for several code
points
in the Unicode blocks "Miscellaneous Mathematical Symbols-A/B" -
transliterated to their approximate ASCII representations. It also adds a
corresponding iconv transliteration test.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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>From glibc-bugs-return-46479-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 17:58:33 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/23132] Missing transliterations in Miscellaneous Mathematical Symbols-A/B Unicode blocks
Date: Fri, 25 Oct 2019 17:58:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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CC| |carlos at redhat dot com
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--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Fixed by Arjun's commit.
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>From glibc-bugs-return-46480-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Oct 25 19:41:37 2019
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/25119] Change Czech weekday names to lowercase
Date: Fri, 25 Oct 2019 19:41:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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| |com
--- Comment #3 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Thank you for the report. You don't have to write a patch but you can if you
want. CLDR confirms what you said and this is sufficient for us.
However, one final question. I have just checked and I can see that the
uppercased weekday names in Czech have been there from the beginning. My guess
is that this is to workaround the issue: the weekday names tend to appear in
the beginning of date formats where it is better to have them uppercased. So
the question is: are you sure you want this change? Have you consulted this
with anyone else?
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>From glibc-bugs-return-46481-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 06:48:52 2019
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Subject: [Bug malloc/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
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helugang <helugang at huawei dot com> changed:
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Severity|enhancement |critical
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>From glibc-bugs-return-46482-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 08:01:11 2019
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Subject: [Bug locale/25139] New: Please add the new language_REGION locale
Date: Mon, 28 Oct 2019 08:01:00 -0000
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Bug ID: 25139
Summary: Please add the new language_REGION locale
Product: glibc
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Assignee: unassigned at sourceware dot org
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Dear maintainers,
Please find attached the locale definition for <locale> to be
considered for inclusion in glibc.
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>From glibc-bugs-return-46483-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 08:05:57 2019
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Subject: [Bug locale/25139] Please add the new language_REGION locale
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talachan <talachanmon at gmail dot com> changed:
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--- Comment #1 from talachan <talachanmon at gmail dot com> ---
Created attachment 12055
--> https://sourceware.org/bugzilla/attachment.cgi?id=12055&action=edit
Dear maintainers, Please find attached the locale definition for <locale> to
be considered for inclusion in glibc.
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>From glibc-bugs-return-46484-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 08:55:54 2019
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Subject: [Bug locale/25139] Please add the new mnw_MM locale
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https://sourceware.org/bugzilla/show_bug.cgi?id=25139
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Summary|Please add the new |Please add the new mnw_MM
|language_REGION locale |locale
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Severity|normal |enhancement
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From: "dmantipov at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/25140] New: Hang in pthread_cond_broadcast()
Date: Mon, 28 Oct 2019 10:19:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25140
Bug ID: 25140
Summary: Hang in pthread_cond_broadcast()
Product: glibc
Version: 2.29
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: dmantipov at yandex dot ru
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 12056
--> https://sourceware.org/bugzilla/attachment.cgi?id=12056&action=edit
Toy barrier
I'm doing a simple barrier (loosely based on classic David Butenhof's example
from "Programming with POSIX Threads" book) located in shared memory segment
backed by regular file. Sample program (attached) runs 3 threads, so 3
instances are obviously expected to reach the barrier with count 9. But, after
a few dozens of Ctrl-C and restarts of 1-2 running instances, everything hangs.
Typical backtrace shows that 8 threads are waiting and 1 locked in
pthread_cond_broadcast(). Example:
Instance 0: all 3 (well, "looper") threads are waiting
Thread 4 (Thread 0x7fc25e4a7700 (LWP 4061)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7fc25f6e1048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7fc25f6e1048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7fc25f6e1028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7fc25f6e1028, seq=2533, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007fc25f68183d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7fc25f6e1000, cond=0x7fc25f6e1028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7fc25f6e1028, mutex=0x7fc25f6e1000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7fc25f6e1000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7fc25f6e1000) at toy-barrier.c:168
#8 0x00007fc25f67b4c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007fc25f5a9553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7fc25eca8700 (LWP 4060)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7fc25f6e1048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7fc25f6e1048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7fc25f6e1028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7fc25f6e1028, seq=2540, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007fc25f68183d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7fc25f6e1000, cond=0x7fc25f6e1028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7fc25f6e1028, mutex=0x7fc25f6e1000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7fc25f6e1000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7fc25f6e1000) at toy-barrier.c:168
#8 0x00007fc25f67b4c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007fc25f5a9553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7fc25f4a9700 (LWP 4059)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7fc25f6e1048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7fc25f6e1048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7fc25f6e1028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7fc25f6e1028, seq=2536, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007fc25f68183d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7fc25f6e1000, cond=0x7fc25f6e1028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7fc25f6e1028, mutex=0x7fc25f6e1000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7fc25f6e1000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7fc25f6e1000) at toy-barrier.c:168
#8 0x00007fc25f67b4c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007fc25f5a9553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7fc25f4aa740 (LWP 4058)):
#0 0x00007fc25f67c9f8 in __GI___pthread_timedjoin_ex
(threadid=140472799106816, thread_return=0x0, abstime=<optimized out>,
block=<optimized out>) at pthread_join_common.c:84
#1 0x0000000000401b1c in main (argc=2, argv=0x7ffedadd8ca8) at
toy-barrier.c:199
Instance 1: all 3 looper threads are waiting
Thread 4 (Thread 0x7f8039908700 (LWP 4069)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7f803ab42048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7f803ab42048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7f803ab42028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7f803ab42028, seq=2539, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007f803aae283d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7f803ab42000, cond=0x7f803ab42028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7f803ab42028, mutex=0x7f803ab42000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7f803ab42000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7f803ab42000) at toy-barrier.c:168
#8 0x00007f803aadc4c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007f803aa0a553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f803a109700 (LWP 4068)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7f803ab42048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7f803ab42048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7f803ab42028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7f803ab42028, seq=2537, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007f803aae283d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7f803ab42000, cond=0x7f803ab42028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7f803ab42028, mutex=0x7f803ab42000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7f803ab42000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7f803ab42000) at toy-barrier.c:168
#8 0x00007f803aadc4c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007f803aa0a553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f803a90a700 (LWP 4067)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7f803ab42048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7f803ab42048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7f803ab42028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7f803ab42028, seq=2535, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007f803aae283d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7f803ab42000, cond=0x7f803ab42028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7f803ab42028, mutex=0x7f803ab42000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7f803ab42000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7f803ab42000) at toy-barrier.c:168
#8 0x00007f803aadc4c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007f803aa0a553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f803a90b740 (LWP 4066)):
#0 0x00007f803aadd9f8 in __GI___pthread_timedjoin_ex
(threadid=140188715099904, thread_return=0x0, abstime=<optimized out>,
block=<optimized out>) at pthread_join_common.c:84
#1 0x0000000000401b1c in main (argc=2, argv=0x7ffec251db08) at
toy-barrier.c:199
Instance 2: 2 loopers are waiting, and 1 (LWP 4071) stucks in
__pthread_cond_broadcast():
Thread 4 (Thread 0x7fe552fd1700 (LWP 4073)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7fe55420b048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7fe55420b048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7fe55420b028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7fe55420b028, seq=2534, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007fe5541ab83d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7fe55420b000, cond=0x7fe55420b028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7fe55420b028, mutex=0x7fe55420b000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7fe55420b000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7fe55420b000) at toy-barrier.c:168
#8 0x00007fe5541a54c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007fe5540d3553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7fe5537d2700 (LWP 4072)):
#0 futex_wait (private=128, expected=<optimized out>,
futex_word=0x7fe55420b048) at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=128, expected=<optimized out>,
futex_word=0x7fe55420b048) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_acquire_lock (private=128, cond=0x7fe55420b028) at
pthread_cond_common.c:280
#3 __condvar_cancel_waiting (cond=0x7fe55420b028, seq=2538, g=<optimized out>,
private=128) at pthread_cond_wait.c:86
#4 0x00007fe5541ab83d in __pthread_cond_wait_common (abstime=<optimized out>,
mutex=0x7fe55420b000, cond=0x7fe55420b028) at pthread_cond_wait.c:554
#5 __pthread_cond_timedwait (cond=0x7fe55420b028, mutex=0x7fe55420b000,
abstime=<optimized out>) at pthread_cond_wait.c:667
#6 0x000000000040177d in toy_barrier_timedwait (b=0x7fe55420b000, ms=100) at
toy-barrier.c:107
#7 0x00000000004019d6 in looper (arg=0x7fe55420b000) at toy-barrier.c:168
#8 0x00007fe5541a54c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9 0x00007fe5540d3553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7fe553fd3700 (LWP 4071)):
#0 futex_wait (private=<optimized out>, expected=7, futex_word=0x7fe55420b03c)
at ../sysdeps/unix/sysv/linux/futex-internal.h:61
#1 futex_wait_simple (private=<optimized out>, expected=7,
futex_word=0x7fe55420b03c) at ../sysdeps/nptl/futex-internal.h:135
#2 __condvar_quiesce_and_switch_g1 (private=<optimized out>,
g1index=<synthetic pointer>, wseq=<optimized out>, cond=0x7fe55420b028) at
pthread_cond_common.c:416
#3 __pthread_cond_broadcast (cond=0x7fe55420b028) at
pthread_cond_broadcast.c:73
#4 0x000000000040170e in toy_barrier_timedwait (b=0x7fe55420b000, ms=100) at
toy-barrier.c:99
#5 0x00000000004019d6 in looper (arg=0x7fe55420b000) at toy-barrier.c:168
#6 0x00007fe5541a54c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#7 0x00007fe5540d3553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7fe553fd4740 (LWP 4070)):
#0 0x00007fe5541a69f8 in __GI___pthread_timedjoin_ex
(threadid=140622933341952, thread_return=0x0, abstime=<optimized out>,
block=<optimized out>) at pthread_join_common.c:84
#1 0x0000000000401b1c in main (argc=2, argv=0x7fff05296f08) at
toy-barrier.c:199
This problem seems to be generic rather than vendor-specific because I was able
to reproduce it on at least 3 systems:
1) Fedora 30 with a few 5.2.x and 5.3.x kernels, vendor's glibc 2.29 and 2.30;
2) Ubuntu 19.04 with 4.15.0 kernel, vendor's glibc 2.29;
3) Debian 9.11 with 4.9.0 kernel, vendor's glibc 2.24.
At a first glance, this looks similar to
https://sourceware.org/bugzilla/show_bug.cgi?id=23538.
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Subject: [Bug nptl/25140] Hang in pthread_cond_broadcast()
Date: Mon, 28 Oct 2019 11:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25140
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> ---
(In reply to Dmitry Antipov from comment #0)
> Created attachment 12056 [details]
> Toy barrier
>
> I'm doing a simple barrier (loosely based on classic David Butenhof's
> example from "Programming with POSIX Threads" book) located in shared memory
> segment backed by regular file. Sample program (attached) runs 3 threads, so
> 3 instances are obviously expected to reach the barrier with count 9. But,
> after a few dozens of Ctrl-C and restarts of 1-2 running instances,
> everything hangs.
I think for this to work, you would need robust conditional variables (similar
to robust mutexes). But POSIX condition variables are not robust. See bug 21422
for further discussion.
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Date: Mon, 28 Oct 2019 11:40:00 -0000
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--- Comment #4 from Jan Slaný <slanyjan89 at seznam dot cz> ---
I haven't consulted this with the maintainers. The last change mentioned in the
file header is from the year 2000 and I don't really know whom to contact. Is
there any maintainers list I can check?
You are right in guessing that the weekday mostly appears in the beginning of a
date format. I am aware that the capitalized version may be desired in some
cases, but these are limited to the beginnings of titles or sentences. The
current solution prevents us from writing proper sentences like "Today is
Friday, the first of November", which requires a lowercase version of the
weekday in Czech.
In short, I feel that the decision whether to capitalize or not should really
be left upon the author of the text.
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>From glibc-bugs-return-46488-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 12:21:47 2019
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From: "dmantipov at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/25140] Hang in pthread_cond_broadcast()
Date: Mon, 28 Oct 2019 12:21:00 -0000
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--- Comment #2 from Dmitry Antipov <dmantipov at yandex dot ru> ---
(In reply to Florian Weimer from comment #1)
> I think for this to work, you would need robust conditional variables
> (similar to robust mutexes). But POSIX condition variables are not robust.
> See bug 21422 for further discussion.
Ugh. So this example is UB, right?
Well, the only reason to master my own barrier was a lack of
pthread_barrier_timedwait() with semantics similar to pthread_cond_timedwait()
(since 1995, no one had think about what to do if a barrier is not reached for
a some time?). But if POSIX barriers aren't robust as well, this will be
useless for my purposes anyway.
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>From glibc-bugs-return-46489-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 12:29:43 2019
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Subject: [Bug nptl/25140] Hang in pthread_cond_broadcast()
Date: Mon, 28 Oct 2019 12:29:00 -0000
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Dmitry Antipov from comment #2)
> (In reply to Florian Weimer from comment #1)
>
> > I think for this to work, you would need robust conditional variables
> > (similar to robust mutexes). But POSIX condition variables are not robust.
> > See bug 21422 for further discussion.
>
> Ugh. So this example is UB, right?
Yes, I think so.
> Well, the only reason to master my own barrier was a lack of
> pthread_barrier_timedwait() with semantics similar to
> pthread_cond_timedwait()
> (since 1995, no one had think about what to do if a barrier is not reached
> for a some time?). But if POSIX barriers aren't robust as well, this will be
> useless for my purposes anyway.
Right. I think you will have to use futexes directly, without any userspace
shortcuts.
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>From glibc-bugs-return-46490-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 13:50:39 2019
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
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>From glibc-bugs-return-46491-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 13:52:19 2019
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Subject: [Bug localedata/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
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>From glibc-bugs-return-46492-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 13:57:04 2019
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Subject: [Bug malloc/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
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Gunnar Hjalmarsson <gunnarhj at ubuntu dot com> changed:
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>From glibc-bugs-return-46493-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 14:01:15 2019
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Subject: [Bug malloc/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
Date: Mon, 28 Oct 2019 14:00:00 -0000
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--- Comment #1 from Gunnar Hjalmarsson <gunnarhj at ubuntu dot com> ---
I changed the component by mistake and then changed back. Sorry for the noise.
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>From glibc-bugs-return-46494-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 15:52:54 2019
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Subject: [Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
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>From glibc-bugs-return-46495-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Oct 28 18:31:30 2019
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Subject: [Bug dynamic-link/20839] Incomplete rollback of dynamic linker state on linking failure
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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> ---
I think I have a patch for this.
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25146] New: Default nsswitch.conf should not include initgroups.
Date: Tue, 29 Oct 2019 16:03:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25146
Bug ID: 25146
Summary: Default nsswitch.conf should not include initgroups.
Product: glibc
Version: 2.31
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 commit 4b7c74179c8928d971d370e1137d202f891a4cf5 the nsswitch.conf file was
harmonized with downstream distributions, but this change included adding
"initgroups: files". We should not add initgroups by default, we can have it,
but it should be commented out to allow it to inherit the settings from groups.
The problem is principally that downstream authconfig won't update initgroups
and it will get out of sync with groups.
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>From glibc-bugs-return-46497-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 29 16:04:25 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25146] Default nsswitch.conf should not include initgroups.
Date: Tue, 29 Oct 2019 16:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25146
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Despite no release going out the door with this fix I've filed a sourceware bug
because the fix did make it into Fedora and I want to link from Fedora to this
bug.
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>From glibc-bugs-return-46498-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 29 16:22:01 2019
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From: "oss at malat dot biz" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/25147] New: Race between pthread_rwlock_wrlock and pthread_rwlock_rdlock leads to a livelock
Date: Tue, 29 Oct 2019 16:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25147
Bug ID: 25147
Summary: Race between pthread_rwlock_wrlock and
pthread_rwlock_rdlock leads to a livelock
Product: glibc
Version: 2.28
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: oss at malat dot biz
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 12057
--> https://sourceware.org/bugzilla/attachment.cgi?id=12057&action=edit
Example code illustrating the problem
Consider Tr and Tw threads running on the same core, Tr having a higher
priority. Then the following situation can happen:
Tw executes __pthread_rwlock_wrlock_full():
....
1 if (atomic_compare_exchange_weak_acquire (&rwlock->__data.__readers,
2 &r, r | PTHREAD_RWLOCK_WRPHASE))
3 {
4 /* We have started a write phase, so need to enable readers to wait.
5 See the similar case in __pthread_rwlock_rdlock_full. Unlike in
6 that similar case, we are the (only) primary writer and so do
7 not need to wake another writer. */
8
9 atomic_store_relaxed (&rwlock->__data.__wrphase_futex, 1);
....
And before the line 9 is executed, Tw is scheduled out.
Tr is scheduled in and executes __pthread_rwlock_rdlock_full()
....
1 for (;;)
2 {
3 while (((wpf = atomic_load_relaxed (&rwlock->__data.__wrphase_futex))
4 | PTHREAD_RWLOCK_FUTEX_USED) == (1 | PTHREAD_RWLOCK_FUTEX_USED))
5 {
6 // Not entered, __wrphase_futex is 0
7 }
8 if (ready)
9 break;
10 if ((atomic_load_acquire (&rwlock->__data.__readers)
11 & PTHREAD_RWLOCK_WRPHASE) == 0)
12 ready = true;
13 }
....
and spins in this loop forever, because Tw will never run and set
__wrphase_futex to 1.
Attached program can trigger the issue.
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>From glibc-bugs-return-46499-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 29 17:11:20 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25146] Default nsswitch.conf should not include initgroups.
Date: Tue, 29 Oct 2019 17:11:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25146
--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Carlos O'Donell <carlos@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eed1f6fcdb0526498223ebfe95f91ef5dec2172a
commit eed1f6fcdb0526498223ebfe95f91ef5dec2172a
Author: Carlos O'Donell <carlos@redhat.com>
Date: Tue Oct 29 11:58:03 2019 -0400
Comment out initgroups from example nsswitch.conf (Bug 25146)
In commit 4b7c74179c8928d971d370e1137d202f891a4cf5 the nsswitch.conf
file was harmonized with downstream distributions, but this change
included adding "initgroups: files". We should not add initgroups by
default, we can have it, but it should be commented out to allow it
to inherit the settings for group. The problem is principally that
downstream authconfig won't update initgroups and it will get out of
sync with the setting for group.
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>From glibc-bugs-return-46500-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Oct 29 21:03:39 2019
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From: "gabriel at inconstante dot net.br" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24941] Make grantpt usable after fork in more cases
Date: Tue, 29 Oct 2019 21:03:00 -0000
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Gabriel F. T. Gomes <gabriel at inconstante dot net.br> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |gabriel at inconstante dot net.br
--- Comment #2 from Gabriel F. T. Gomes <gabriel at inconstante dot net.br> ---
(In reply to Florian Weimer from comment #0)
> Supporting grantpt after fork seems useful.
You seem to imply that it currently doesn't work after fork. Is my assumption
correct? What could I do to see that in action (I tried using grantpt after
fork and I didn't notice any problem)?
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>From glibc-bugs-return-46501-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 06:18:53 2019
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From: "changqing.li at windriver dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25148] New: Missing timeval defination when compiled with _XOPEN_SOURCE
Date: Wed, 30 Oct 2019 06:18:00 -0000
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Bug ID: 25148
Summary: Missing timeval defination when compiled with
_XOPEN_SOURCE
Product: glibc
Version: 2.30
Status: UNCONFIRMED
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Priority: P2
Component: libc
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CC: drepper.fsp at gmail dot com
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The following code snippet compile failed with below error when
-D_XOPEN_SOURCE=600 is passed to gcc. Compile can success without
-D_XOPEN_SOURCE=600.
[snip of tui.c]
#include <stdint.h>
#include <ncurses.h>
#include <time.h>
#include <syslog.h>
#include <panel.h>
#include <pthread.h>
#include <signal.h>
#include "tmon.h"
#define min(x, y) ({
[snip]
[snip of tmon.h]
struct thermal_data_record {
struct timeval tv;
unsigned long temp[MAX_NR_TZONE];
double pid_out_pct;
};
[snip]
Error:
| In file included from tui.c:22:
| tmon.h:42:17: error: field 'tv' has incomplete type
| 42 | struct timeval tv;
| | ^~
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>From glibc-bugs-return-46502-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 08:33:51 2019
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25148] Missing timeval defination when compiled with _XOPEN_SOURCE
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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> ---
For the timeval structure you need to include <sys/time.h> or <sys/select.h> or
<utmpx.h>. By using _XOPEN_SOURCE=600 you are requesting strict namespace
rules, so that no other header defines the structure.
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>From glibc-bugs-return-46503-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 09:01:22 2019
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Subject: [Bug libc/24941] Make grantpt usable after multi-threaded fork in more cases
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Make grantpt usable after |Make grantpt usable after
|fork in more cases |multi-threaded fork in more
| |cases
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Gabriel F. T. Gomes from comment #2)
> (In reply to Florian Weimer from comment #0)
> > Supporting grantpt after fork seems useful.
>
> You seem to imply that it currently doesn't work after fork. Is my
> assumption correct? What could I do to see that in action (I tried using
> grantpt after fork and I didn't notice any problem)?
It hangs on an internal NSS lock if the fork happened while NSS was used in
another thread.
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Subject: [Bug nptl/25147] Race between pthread_rwlock_wrlock and pthread_rwlock_rdlock leads to a livelock
Date: Wed, 30 Oct 2019 09:25:00 -0000
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>From glibc-bugs-return-46505-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 09:26:13 2019
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Subject: [Bug libc/25146] Default nsswitch.conf should not include initgroups.
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>From glibc-bugs-return-46506-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 09:27:10 2019
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Subject: [Bug nptl/25118] Excess futex syscall while using pthread_cond_wait()
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>From glibc-bugs-return-46507-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 09:32:04 2019
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug regex/25149] New: Array bounds violation in proceed_next_node
Date: Wed, 30 Oct 2019 09:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25149
Bug ID: 25149
Summary: Array bounds violation in proceed_next_node
Product: glibc
Version: 2.30
Status: NEW
Severity: normal
Priority: P2
Component: regex
Assignee: unassigned at sourceware dot org
Reporter: schwab@linux-m68k.org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
If the regex has more subexpressions than the number of elements allocated in
the regmatch_t array passed to regexec then proceed_next_node may access the
regmatch_t array outside its bounds.
#include <regex.h>
int
main (void)
{
regex_t rx;
regmatch_t rm[4];
int err;
err = regcomp (&rx,
"^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?).?\\9\\8\\7\\6\\5\\4\\3\\2\\1$",
REG_EXTENDED);
if (err == REG_NOERROR)
err = regexec (&rx, "1234", sizeof (rm) / sizeof (rm[0]), rm, 0);
return err != REG_NOMATCH;
}
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>From glibc-bugs-return-46508-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 10:13:13 2019
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Subject: [Bug locale/23711] wcsrtombs calls wcsnlen on input data which is not an array
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>From glibc-bugs-return-46509-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 10:37:24 2019
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Subject: [Bug locale/23711] wcsrtombs calls wcsnlen on input data which is not an array
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/445
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>From glibc-bugs-return-46510-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 10:57:53 2019
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Subject: [Bug nptl/19430] __reclaim_stacks is bogus
Date: Wed, 30 Oct 2019 10:57:00 -0000
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
POSIX thinks this is acceptable.
We will have to see how this interacts with libraries that put references to
thread-local data into global data structures. I suppose those would have to
use an indirection, storing the shared data on the heap, and only a pointer to
that in TLS.
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>From glibc-bugs-return-46511-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 10:58:10 2019
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Subject: [Bug nptl/19430] __reclaim_stacks is bogus
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>From glibc-bugs-return-46512-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 13:29:59 2019
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Subject: [Bug locale/24372] Binary locale files are not architecture independent
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>From glibc-bugs-return-46514-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 13:31:47 2019
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>From glibc-bugs-return-46515-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 16:20:07 2019
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>From glibc-bugs-return-46516-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 16:48:30 2019
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Subject: [Bug network/20358] RES_USE_DNSSEC sets DO; should also have a way to set AD
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/461
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>From glibc-bugs-return-46518-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 18:52:32 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/24026] malloc_info() returns wrong numbers
Date: Wed, 30 Oct 2019 18:52:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=91d5989356325759503311df67e750b358ef4148
commit 91d5989356325759503311df67e750b358ef4148
Author: Niklas Hamb�chen <mail@nh2.me>
Date: Thu Aug 8 22:02:27 2019 +0200
malloc: Fix missing accounting of top chunk in malloc_info [BZ #24026]
Fixes `<total type="rest" size="..."> incorrectly showing as 0 most
of the time.
The rest value being wrong is significant because to compute the
actual amount of memory handed out via malloc, the user must subtract
it from <system type="current" size="...">. That result being wrong
makes investigating memory fragmentation issues like
<https://bugzilla.redhat.com/show_bug.cgi?id=843478> close to
impossible.
(cherry picked from commit b6d2c4475d5abc05dd009575b90556bdd3c78ad0)
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>From glibc-bugs-return-46517-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 18:52:26 2019
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Subject: [Bug malloc/24867] Unintended malloc_info formatting changes
Date: Wed, 30 Oct 2019 18:52:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6d750b18999b52ec74102c046cd27181f943bda8
commit 6d750b18999b52ec74102c046cd27181f943bda8
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 1 14:06:24 2019 +0200
malloc: Remove unwanted leading whitespace in malloc_info [BZ #24867]
It was introduced in commit 6c8dbf00f536d78b1937b5af6f57be47fd376344
("Reformat malloc to gnu style.").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit b0f6679bcd738ea244a14acd879d974901e56c8e)
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>From glibc-bugs-return-46519-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Oct 30 19:01:06 2019
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Subject: [Bug locale/23711] wcsrtombs calls wcsnlen on input data which is not an array
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Subject: [Bug string/19391] strnlen invokes UB by adding maxlen to str
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>From glibc-bugs-return-46522-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 00:14:28 2019
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Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
Date: Thu, 31 Oct 2019 00:14:00 -0000
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>From glibc-bugs-return-46521-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 00:14:15 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
Date: Thu, 31 Oct 2019 00:14:00 -0000
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--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
Patch posted to fix this:
https://www.sourceware.org/ml/libc-alpha/2019-10/msg00952.html
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>From glibc-bugs-return-46523-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 03:09:40 2019
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Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
Date: Thu, 31 Oct 2019 03:09:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by DJ Delorie <dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ff12e0fb91b9072800f031cb21fb2651ee7b6251
commit ff12e0fb91b9072800f031cb21fb2651ee7b6251
Author: DJ Delorie <dj@redhat.com>
Date: Wed Oct 30 18:03:14 2019 -0400
Base max_fast on alignment, not width, of bins (Bug 24903)
set_max_fast sets the "impossibly small" value based on,
eventually, MALLOC_ALIGNMENT. The comparisons for the smallest
chunk used is, eventually, MIN_CHUNK_SIZE. Note that i386
is the only platform where these are the same, so a smallest
chunk *would* be put in a no-fastbins fastbin.
This change calculates the "impossibly small" value
based on MIN_CHUNK_SIZE instead, so that we can know it will
always be impossibly small.
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>From glibc-bugs-return-46524-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 03:13:00 2019
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Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
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dj at redhat dot com <dj at redhat dot com> changed:
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--- Comment #5 from dj at redhat dot com <dj at redhat dot com> ---
I fixed the cause of the bug but not the details in the test case itself,
leaving open for that purpose.
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>From glibc-bugs-return-46525-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 03:29:14 2019
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Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
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dj at redhat dot com <dj at redhat dot com> changed:
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--- Comment #6 from dj at redhat dot com <dj at redhat dot com> ---
The test itself was fixed in commit f9769a239784772453d595bc2f4bed8739810e06
(2019-08-15)
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>From glibc-bugs-return-46526-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 11:40:38 2019
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug time/21229] strftime race conditions related to data filled by tzset
Date: Thu, 31 Oct 2019 11:40:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
According to the POSIX clarification, we need to behave as if strftime called
tzset.
We can still make the internal use of this data race-free, fixing this bug.
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>From glibc-bugs-return-46527-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 15:49:51 2019
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Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
Date: Thu, 31 Oct 2019 15:49:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f144981490bd2ab13189d85902ca74beecb307e4
commit f144981490bd2ab13189d85902ca74beecb307e4
Author: DJ Delorie <dj@redhat.com>
Date: Wed Oct 30 18:03:14 2019 -0400
Base max_fast on alignment, not width, of bins (Bug 24903)
set_max_fast sets the "impossibly small" value based on,
eventually, MALLOC_ALIGNMENT. The comparisons for the smallest
chunk used is, eventually, MIN_CHUNK_SIZE. Note that i386
is the only platform where these are the same, so a smallest
chunk *would* be put in a no-fastbins fastbin.
This change calculates the "impossibly small" value
based on MIN_CHUNK_SIZE instead, so that we can know it will
always be impossibly small.
(cherry picked from commit ff12e0fb91b9072800f031cb21fb2651ee7b6251)
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>From glibc-bugs-return-46528-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 19:21:55 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20839] Incomplete rollback of dynamic linker state on linking failure
Date: Thu, 31 Oct 2019 19:21:00 -0000
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--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/471
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>From glibc-bugs-return-46529-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Oct 31 20:40:36 2019
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From: "gabriel at inconstante dot net.br" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24941] Make grantpt usable after multi-threaded fork in more cases
Date: Thu, 31 Oct 2019 20:40:00 -0000
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--- Comment #4 from Gabriel F. T. Gomes <gabriel at inconstante dot net.br> ---
(In reply to Florian Weimer from comment #3)
>
> It hangs on an internal NSS lock if the fork happened while NSS was used in
> another thread.
Thanks, I get it now and I was able to reproduce the hanging in
__GI___nss_database_lookup2, with a trivial multi-threaded (3 threads) program.
(gdb) bt
#0 0x00007a0f516e6868 in __lll_lock_wait_private (futex=0x7a0f51854728 <lock>)
at ./lowlevellock.c:35
#1 0x00007a0f517a98e0 in __GI___nss_database_lookup2 (
database=0x7a0f517f0f38 "group", alternate_name=<optimized out>,
defconfig=<optimized out>, ni=<optimized out>) at nsswitch.c:122
#2 0x00007a0f517abc2c in __GI___nss_group_lookup2 (ni=0x7fffca032850,
fct_name=0x7a0f517f0fc8 "getgrnam_r", fct2_name=0x0, fctp=0x7fffca032840)
at XXX-lookup.c:66
#3 0x00007a0f51735ad8 in __getgrnam_r (name=0x7a0f517f4af8 "tty",
resbuf=0x7fffca033dc0, buffer=0x7fffca032930 "", buflen=1024,
result=0x7fffca033de0) at ../nss/getXXbyYY_r.c:269
#4 0x00007a0f517cacd8 in grantpt (fd=<optimized out>)
at ../sysdeps/unix/grantpt.c:156
#5 0x0000000010001184 in main ()
The hanging is gone with the patch applied.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20839] Incomplete rollback of dynamic linker state on linking failure
Date: Thu, 31 Oct 2019 21:24:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d3905b110000463775b3fb189213833acaebf81
commit 0d3905b110000463775b3fb189213833acaebf81
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jul 1 12:23:10 2019 -0700
Call _dl_open_check after relocation [BZ #24259]
This is a workaround for [BZ #20839] which doesn't remove the NODELETE
object when _dl_open_check throws an exception. Move it after relocation
in dl_open_worker to avoid leaving the NODELETE object mapped without
relocation.
[BZ #24259]
* elf/dl-open.c (dl_open_worker): Call _dl_open_check after
relocation.
* sysdeps/x86/Makefile (tests): Add tst-cet-legacy-5a,
tst-cet-legacy-5b, tst-cet-legacy-6a and tst-cet-legacy-6b.
(modules-names): Add tst-cet-legacy-mod-5a, tst-cet-legacy-mod-5b,
tst-cet-legacy-mod-5c, tst-cet-legacy-mod-6a, tst-cet-legacy-mod-6b
and tst-cet-legacy-mod-6c.
(CFLAGS-tst-cet-legacy-5a.c): New.
(CFLAGS-tst-cet-legacy-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5c.c): Likewise.
(CFLAGS-tst-cet-legacy-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6c.c): Likewise.
($(objpfx)tst-cet-legacy-5a): Likewise.
($(objpfx)tst-cet-legacy-5a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-5a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-5b.so): Likewise.
($(objpfx)tst-cet-legacy-5b): Likewise.
($(objpfx)tst-cet-legacy-5b.out): Likewise.
(tst-cet-legacy-5b-ENV): Likewise.
($(objpfx)tst-cet-legacy-6a): Likewise.
($(objpfx)tst-cet-legacy-6a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-6a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-6b.so): Likewise.
($(objpfx)tst-cet-legacy-6b): Likewise.
($(objpfx)tst-cet-legacy-6b.out): Likewise.
(tst-cet-legacy-6b-ENV): Likewise.
* sysdeps/x86/tst-cet-legacy-5.c: New file.
* sysdeps/x86/tst-cet-legacy-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5c.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6c.c: Likewise.
(cherry picked from commit d0093c5cefb7f7a4143f3bb03743633823229cc6)
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/24259] Call _dl_open_check after relocation is finished, to deal with CET failures
Date: Thu, 31 Oct 2019 21:24:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0d3905b110000463775b3fb189213833acaebf81
commit 0d3905b110000463775b3fb189213833acaebf81
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jul 1 12:23:10 2019 -0700
Call _dl_open_check after relocation [BZ #24259]
This is a workaround for [BZ #20839] which doesn't remove the NODELETE
object when _dl_open_check throws an exception. Move it after relocation
in dl_open_worker to avoid leaving the NODELETE object mapped without
relocation.
[BZ #24259]
* elf/dl-open.c (dl_open_worker): Call _dl_open_check after
relocation.
* sysdeps/x86/Makefile (tests): Add tst-cet-legacy-5a,
tst-cet-legacy-5b, tst-cet-legacy-6a and tst-cet-legacy-6b.
(modules-names): Add tst-cet-legacy-mod-5a, tst-cet-legacy-mod-5b,
tst-cet-legacy-mod-5c, tst-cet-legacy-mod-6a, tst-cet-legacy-mod-6b
and tst-cet-legacy-mod-6c.
(CFLAGS-tst-cet-legacy-5a.c): New.
(CFLAGS-tst-cet-legacy-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5c.c): Likewise.
(CFLAGS-tst-cet-legacy-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6c.c): Likewise.
($(objpfx)tst-cet-legacy-5a): Likewise.
($(objpfx)tst-cet-legacy-5a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-5a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-5b.so): Likewise.
($(objpfx)tst-cet-legacy-5b): Likewise.
($(objpfx)tst-cet-legacy-5b.out): Likewise.
(tst-cet-legacy-5b-ENV): Likewise.
($(objpfx)tst-cet-legacy-6a): Likewise.
($(objpfx)tst-cet-legacy-6a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-6a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-6b.so): Likewise.
($(objpfx)tst-cet-legacy-6b): Likewise.
($(objpfx)tst-cet-legacy-6b.out): Likewise.
(tst-cet-legacy-6b-ENV): Likewise.
* sysdeps/x86/tst-cet-legacy-5.c: New file.
* sysdeps/x86/tst-cet-legacy-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5c.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6c.c: Likewise.
(cherry picked from commit d0093c5cefb7f7a4143f3bb03743633823229cc6)
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/24259] Call _dl_open_check after relocation is finished, to deal with CET failures
Date: Thu, 31 Oct 2019 21:29:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5e1548a6d9c5c544f13cb71f4462b3f38e87a3c6
commit 5e1548a6d9c5c544f13cb71f4462b3f38e87a3c6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jul 1 12:23:10 2019 -0700
Call _dl_open_check after relocation [BZ #24259]
This is a workaround for [BZ #20839] which doesn't remove the NODELETE
object when _dl_open_check throws an exception. Move it after relocation
in dl_open_worker to avoid leaving the NODELETE object mapped without
relocation.
[BZ #24259]
* elf/dl-open.c (dl_open_worker): Call _dl_open_check after
relocation.
* sysdeps/x86/Makefile (tests): Add tst-cet-legacy-5a,
tst-cet-legacy-5b, tst-cet-legacy-6a and tst-cet-legacy-6b.
(modules-names): Add tst-cet-legacy-mod-5a, tst-cet-legacy-mod-5b,
tst-cet-legacy-mod-5c, tst-cet-legacy-mod-6a, tst-cet-legacy-mod-6b
and tst-cet-legacy-mod-6c.
(CFLAGS-tst-cet-legacy-5a.c): New.
(CFLAGS-tst-cet-legacy-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5c.c): Likewise.
(CFLAGS-tst-cet-legacy-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6c.c): Likewise.
($(objpfx)tst-cet-legacy-5a): Likewise.
($(objpfx)tst-cet-legacy-5a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-5a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-5b.so): Likewise.
($(objpfx)tst-cet-legacy-5b): Likewise.
($(objpfx)tst-cet-legacy-5b.out): Likewise.
(tst-cet-legacy-5b-ENV): Likewise.
($(objpfx)tst-cet-legacy-6a): Likewise.
($(objpfx)tst-cet-legacy-6a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-6a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-6b.so): Likewise.
($(objpfx)tst-cet-legacy-6b): Likewise.
($(objpfx)tst-cet-legacy-6b.out): Likewise.
(tst-cet-legacy-6b-ENV): Likewise.
* sysdeps/x86/tst-cet-legacy-5.c: New file.
* sysdeps/x86/tst-cet-legacy-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5c.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6c.c: Likewise.
(cherry picked from commit d0093c5cefb7f7a4143f3bb03743633823229cc6)
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/20839] Incomplete rollback of dynamic linker state on linking failure
Date: Thu, 31 Oct 2019 21:29:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5e1548a6d9c5c544f13cb71f4462b3f38e87a3c6
commit 5e1548a6d9c5c544f13cb71f4462b3f38e87a3c6
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Mon Jul 1 12:23:10 2019 -0700
Call _dl_open_check after relocation [BZ #24259]
This is a workaround for [BZ #20839] which doesn't remove the NODELETE
object when _dl_open_check throws an exception. Move it after relocation
in dl_open_worker to avoid leaving the NODELETE object mapped without
relocation.
[BZ #24259]
* elf/dl-open.c (dl_open_worker): Call _dl_open_check after
relocation.
* sysdeps/x86/Makefile (tests): Add tst-cet-legacy-5a,
tst-cet-legacy-5b, tst-cet-legacy-6a and tst-cet-legacy-6b.
(modules-names): Add tst-cet-legacy-mod-5a, tst-cet-legacy-mod-5b,
tst-cet-legacy-mod-5c, tst-cet-legacy-mod-6a, tst-cet-legacy-mod-6b
and tst-cet-legacy-mod-6c.
(CFLAGS-tst-cet-legacy-5a.c): New.
(CFLAGS-tst-cet-legacy-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-5c.c): Likewise.
(CFLAGS-tst-cet-legacy-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6a.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6b.c): Likewise.
(CFLAGS-tst-cet-legacy-mod-6c.c): Likewise.
($(objpfx)tst-cet-legacy-5a): Likewise.
($(objpfx)tst-cet-legacy-5a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-5a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-5b.so): Likewise.
($(objpfx)tst-cet-legacy-5b): Likewise.
($(objpfx)tst-cet-legacy-5b.out): Likewise.
(tst-cet-legacy-5b-ENV): Likewise.
($(objpfx)tst-cet-legacy-6a): Likewise.
($(objpfx)tst-cet-legacy-6a.out): Likewise.
($(objpfx)tst-cet-legacy-mod-6a.so): Likewise.
($(objpfx)tst-cet-legacy-mod-6b.so): Likewise.
($(objpfx)tst-cet-legacy-6b): Likewise.
($(objpfx)tst-cet-legacy-6b.out): Likewise.
(tst-cet-legacy-6b-ENV): Likewise.
* sysdeps/x86/tst-cet-legacy-5.c: New file.
* sysdeps/x86/tst-cet-legacy-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-5c.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6a.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6b.c: Likewise.
* sysdeps/x86/tst-cet-legacy-mod-6c.c: Likewise.
(cherry picked from commit d0093c5cefb7f7a4143f3bb03743633823229cc6)
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Subject: [Bug nss/24696] endgrent() clobbers errno=ERRNO for 'group: db files' entry in /etc/nsswitch.conf
Date: Thu, 31 Oct 2019 23:14:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cef4c840a80372fe084effec0da1177d44b40bc0
commit cef4c840a80372fe084effec0da1177d44b40bc0
Author: DJ Delorie <dj@redhat.com>
Date: Fri Jun 28 18:30:00 2019 -0500
nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696]
nss_db allows for getpwent et al to be called without a set*ent,
but it only works once. After the last get*ent a set*ent is
required to restart, because the end*ent did not properly reset
the module. Resetting it to NULL allows for a proper restart.
If the database doesn't exist, however, end*ent erroniously called
munmap which set errno.
The test case runs "makedb" inside the testroot, so needs selinux
DSOs installed.
(cherry picked from commit 99135114ba23c3110b7e4e650fabdc5e639746b7)
(note: tests excluded as test-in-container infrastructure missing)
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To: glibc-bugs@sourceware.org
Subject: [Bug nss/24695] nss_db: calling getpwent after endpwent crashes
Date: Thu, 31 Oct 2019 23:14:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cef4c840a80372fe084effec0da1177d44b40bc0
commit cef4c840a80372fe084effec0da1177d44b40bc0
Author: DJ Delorie <dj@redhat.com>
Date: Fri Jun 28 18:30:00 2019 -0500
nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696]
nss_db allows for getpwent et al to be called without a set*ent,
but it only works once. After the last get*ent a set*ent is
required to restart, because the end*ent did not properly reset
the module. Resetting it to NULL allows for a proper restart.
If the database doesn't exist, however, end*ent erroniously called
munmap which set errno.
The test case runs "makedb" inside the testroot, so needs selinux
DSOs installed.
(cherry picked from commit 99135114ba23c3110b7e4e650fabdc5e639746b7)
(note: tests excluded as test-in-container infrastructure missing)
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Subject: [Bug nss/24695] nss_db: calling getpwent after endpwent crashes
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f1f24cdebafff0c372611801cc8dbe504c3ecfff
commit f1f24cdebafff0c372611801cc8dbe504c3ecfff
Author: DJ Delorie <dj@redhat.com>
Date: Fri Jun 28 18:30:00 2019 -0500
nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696]
nss_db allows for getpwent et al to be called without a set*ent,
but it only works once. After the last get*ent a set*ent is
required to restart, because the end*ent did not properly reset
the module. Resetting it to NULL allows for a proper restart.
If the database doesn't exist, however, end*ent erroniously called
munmap which set errno.
The test case runs "makedb" inside the testroot, so needs selinux
DSOs installed.
(cherry picked from commit 99135114ba23c3110b7e4e650fabdc5e639746b7)
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/24696] endgrent() clobbers errno=ERRNO for 'group: db files' entry in /etc/nsswitch.conf
Date: Thu, 31 Oct 2019 23:16:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f1f24cdebafff0c372611801cc8dbe504c3ecfff
commit f1f24cdebafff0c372611801cc8dbe504c3ecfff
Author: DJ Delorie <dj@redhat.com>
Date: Fri Jun 28 18:30:00 2019 -0500
nss_db: fix endent wrt NULL mappings [BZ #24695] [BZ #24696]
nss_db allows for getpwent et al to be called without a set*ent,
but it only works once. After the last get*ent a set*ent is
required to restart, because the end*ent did not properly reset
the module. Resetting it to NULL allows for a proper restart.
If the database doesn't exist, however, end*ent erroniously called
munmap which set errno.
The test case runs "makedb" inside the testroot, so needs selinux
DSOs installed.
(cherry picked from commit 99135114ba23c3110b7e4e650fabdc5e639746b7)
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>From glibc-bugs-return-46538-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 01 02:35:46 2019
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24941] Make grantpt usable after multi-threaded fork in more cases
Date: Fri, 01 Nov 2019 02:35:00 -0000
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
Should we add your test program as a regular test case? Would you please attach
it to this bug? Thanks.
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>From glibc-bugs-return-46539-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 01 14:19:58 2019
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24941] Make grantpt usable after multi-threaded fork in more cases
Date: Fri, 01 Nov 2019 14:19:00 -0000
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |adhemerval.zanella at linaro dot o
| |rg
--- Comment #6 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
My only reservation is to add another configure option, when I would like to
remove as many as possible. Wouldn't it be better to just add a GNU extension,
grantpt_ex or something, and move towards it instead of hardcode some system
configurable within glibc?
Also, pt_chown has been the source of some security issues over the years. Can
we now just remove it altogether (remove --enable-pt_chown and all associated
functionality)?
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From: "gabriel at inconstante dot net.br" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24941] Make grantpt usable after multi-threaded fork in more cases
Date: Fri, 01 Nov 2019 16:34:00 -0000
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--- Comment #7 from Gabriel F. T. Gomes <gabriel at inconstante dot net.br> ---
Created attachment 12060
--> https://sourceware.org/bugzilla/attachment.cgi?id=12060&action=edit
Reproducer
(In reply to Florian Weimer from comment #5)
> Should we add your test program as a regular test case? Would you please
> attach it to this bug? Thanks.
I don't think we should add it as a new test case to the test suite, because it
is supposed to fail when --with-tty-gid is not used in the configure step (the
default).
Anyway, test case attached. It hangs when built and ran with current glibc
sources, but doesn't hang when the patch is applied.
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>From glibc-bugs-return-46541-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 01 16:58:43 2019
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24941] Make grantpt usable after multi-threaded fork in more cases
Date: Fri, 01 Nov 2019 16:58:00 -0000
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--- Comment #8 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
<https://sourceware.org/ml/libc-alpha/2019-01/msg00176.html> said Hurd
still needs pt_chown (as of January 2019, anyway).
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>From glibc-bugs-return-46542-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 01 23:31:32 2019
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From: "msebor at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Fri, 01 Nov 2019 23:31:00 -0000
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--- Comment #1 from Martin Sebor <msebor at gmail dot com> ---
The GCC patch has just landed. It issues the same warnings, except those in
libc-tls.c and rtld.c are reported under the new -Wzero-length-bounds option
designed to detect accesses to interior zero-length array elements that overlap
subsequent members but that are otherwise not known to be out of the bounds of
the referenced object (it it's known). These issues are classified separately
from -Warray-bounds so they can be suppressed independently, for example while
code is being cleaned up.
libc-tls.c:209:30: warning: array subscript 1 is outside the bounds of an
interior zero-length array ‘struct dtv_slotinfo[0]’ [-Wzero-length-bounds]
209 | static_slotinfo.si.slotinfo[1].map = main_map;
In file included from ../sysdeps/x86/ldsodefs.h:64,
from ../sysdeps/gnu/ldsodefs.h:46,
from ../sysdeps/unix/sysv/linux/ldsodefs.h:25,
from libc-tls.c:21:
../sysdeps/generic/ldsodefs.h:423:7: note: while referencing ‘slotinfo’
423 | } slotinfo[0];
| ^~~~~~~~
rtld.c:1016:27: warning: array subscript ‘cnt’ is outside the bounds of an
interior zero-length array ‘struct auditstate[0]’ [-Wzero-length-bounds]
1016 | GL(dl_rtld_map).l_audit[cnt].cookie = (intptr_t) &GL(dl_rtld_map);
In file included from ../include/dlfcn.h:4,
from rtld.c:20:
../include/link.h:335:7: note: while referencing ‘l_audit’
335 | } l_audit[0];
| ^~~~~~~
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>From glibc-bugs-return-46543-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 02 10:47:38 2019
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From: "fw at deneb dot enyo.de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Sat, 02 Nov 2019 10:47:00 -0000
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--- Comment #2 from fw at deneb dot enyo.de ---
Thanks. I'm looking at patches.
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>From glibc-bugs-return-46544-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 02 18:16:10 2019
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From: "jan at hacker dot ch" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug manual/25156] New: discrepancy between NSS documentation and actual behaviour/code if nsswitch.conf is absent
Date: Sat, 02 Nov 2019 18:16:00 -0000
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Bug ID: 25156
Summary: discrepancy between NSS documentation and actual
behaviour/code if nsswitch.conf is absent
Product: glibc
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I raised this topic in https://github.com/golang/go/issues/35305 :
https://www.gnu.org/software/libc/manual/html_node/Notes-on-NSS-Configuration-File.html
states that, in absence of /etc/nsswitch.conf, ...:
"For the hosts and networks databases the default value is dns
[!UNAVAIL=return] files."
In contrast,
https://sourceware.org/git/?p=glibc.git;a=blob;f=nss/nsswitch.c#l157 seems to
use "files" exclusively, if no /etc/nsswitch.conf is present.
Could you please confirm that the manual (
https://sourceware.org/git/?p=glibc.git;a=blob;f=manual/nss.texi;h=821469a78a298b83c60ed66884fe08e98bb741e0;hb=HEAD#l327
) is outdated and does not reflect current/actual behaviour (of using "files"
exclusively in absence of nsswitch.conf) ... and if so, update the manual?
Furthermore, the
https://sourceware.org/git/?p=glibc.git;a=blob;f=nss/nsswitch.conf#l60 uses
"hosts: files dns" as default.
I wonder whether it's a good idea to provide a default nsswitch.conf (which
uses "hosts: files dns"), while nsswitch.c effectively uses only "files" as
"default" if nsswitch.conf is absent. Wouldn't "files dns" be a more
user-friendly default in code, as it would match the example/default
nsswitch.conf?
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>From glibc-bugs-return-46545-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 02 20:23:54 2019
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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--- Comment #3 from Martin Sebor <msebor at gmail dot com> ---
Do you expect to change the code to avoid the warnings or suppress them via a
pragma?
In case it helps, after reviewing more instances of both of these warnings in
the kernel, I think -Wzero-length-bounds should cover some more of the cases
-Warray-bounds is still issued for. That might turn the -Warray-bounds in
fileops.c and iofwide.c into -Wzero-length-bounds.
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>From glibc-bugs-return-46546-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 02 20:26:32 2019
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Subject: [Bug dynamic-link/25157] New: Audit cookie for the dynamic loader is not initialized correctly
Date: Sat, 02 Nov 2019 20:26:00 -0000
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Bug ID: 25157
Summary: Audit cookie for the dynamic loader is not initialized
correctly
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load_audit_module attempts to initialize the GL (dl_rtld_map).l_audit array,
but uses the unrelated audit function index cnt for that, not the slot index
for the audit module.
/* Store the pointer. */
if (err_str == NULL && largs.result != NULL)
{
newp->fptr[cnt] = largs.result;
/* The dynamic linker link map is statically allocated,
initialize the data now. */
GL(dl_rtld_map).l_audit[cnt].cookie = (intptr_t) &GL(dl_rtld_map);
}
else
newp->fptr[cnt] = NULL;
++cnt;
Found while trying to fix bug 25097, but not actually related to the l_audit
zero-length array. I think this is a bug present in the original
implementation. It was not introduced in the load_audit_module refactoring.
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>From glibc-bugs-return-46547-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 02 20:42:21 2019
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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Florian Weimer <fw at deneb dot enyo.de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fw at deneb dot enyo.de
--- Comment #4 from Florian Weimer <fw at deneb dot enyo.de> ---
I have mostly rewritten the code. I encountered the unrelated bug 25157 while
trying to validate the changes.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nptl/25158] New: warning when using non-thread-safe functions
Date: Sun, 03 Nov 2019 02:10:00 -0000
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Bug ID: 25158
Summary: warning when using non-thread-safe functions
Product: glibc
Version: unspecified
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Priority: P2
Component: nptl
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We're converting gdb to use threads, and while doing so we're
finding that gdb uses a variety of functions which are
not thread-safe, for example strtok.
I noticed that linking will give a warning when trying to
use some functions like mktemp, and I wondered it if would
be possible to extend this method to warn about the use of
non-thread-safe functions when -lpthread is used. This way,
we could be sure that not only gdb but also supporting
libraries in the tree have been updated.
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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--- Comment #5 from Florian Weimer <fw at deneb dot enyo.de> ---
I'm encountering an issue on i686 which appears to be a GCC bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92337
The remaining warnings appear to be fixed with the glibc changes I have (most
of them nice cleanups).
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Subject: [Bug nptl/25066] FAIL: nptl/tst-tls1 on hppa
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by John David Anglin
<danglin@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e4c23a029a54c8c7788eff9ca771a01cccaaa0ce
commit e4c23a029a54c8c7788eff9ca771a01cccaaa0ce
Author: John David Anglin <danglin@gcc.gnu.org>
Date: Sun Nov 3 16:28:01 2019 -0500
hppa: Align __clone stack argument to 8 bytes (Bug 25066)
The hppa architecture requires strict alignment for loads and stores.
As a result, the minimum stack alignment that will work is 8 bytes.
This patch adjusts __clone() to align the stack argument passed to it.
It also adjusts slightly some formatting.
This fixes the nptl/tst-tls1 test.
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Subject: [Bug nptl/25066] FAIL: nptl/tst-tls1 on hppa
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John David Anglin <danglin at gcc dot gnu.org> changed:
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--- Comment #2 from John David Anglin <danglin at gcc dot gnu.org> ---
Fixed on master.
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Subject: [Bug time/25085] zic.c:1369:23: error: writing 4 bytes into a region of size 1
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John David Anglin <danglin at gcc dot gnu.org> changed:
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--- Comment #3 from John David Anglin <danglin at gcc dot gnu.org> ---
Fixed.
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
Marking it as invalid because it was a GCC bug.
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>From glibc-bugs-return-46554-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 04 16:53:23 2019
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Given the proposal to merge libpthread into libc
<https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html>, I'm not sure
"when -lpthread is used" is a good basis for warning. (I don't know if
putting a linker warning for a symbol in libpthread, when the symbol
itself is in libc, would work, either.)
Note the proposal
<http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2444.htm> to allow
strtok state to be thread-local (as in Solaris) and so avoid problems that
way.
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
I'd prefer to make established uses thread-safe where the cost is not
prohibitive and there is little risk of breaking programs. N2444 goes in that
direction. For other interfaces (such as getpwuid), we will need some
clarification from POSIX.
In several cases, making data thread-local actually reduces RSS for programs
that do not use these facilities because we currently allocate many pointers
and locks in the data segment in case we need them.
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>From glibc-bugs-return-46560-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 04 19:45:42 2019
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
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--- Comment #2 from kokoye2007 <kokoye2007 at gmail dot com> ---
Hi sir
Mike, Keld and other geeks
Help me again.
We are running l10n-mnw and Locales
With regards
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Subject: [Bug dynamic-link/24323] dlopen should not be able open PIE objects
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=59991bf48a821a9b8d504b325e84d2099fa1a14e
commit 59991bf48a821a9b8d504b325e84d2099fa1a14e
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Nov 1 15:41:30 2019 -0400
elf: Refuse to dlopen PIE objects [BZ #24323]
Another executable has already been mapped, so the dynamic linker
cannot perform relocations correctly for the second executable.
(cherry picked from commit 2c75b545de6fe3c44138799c68217a94bc669a88)
(test omitted due to indirect dependency on test-in-container)
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Subject: [Bug dynamic-link/24323] dlopen should not be able open PIE objects
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=52a6381659ecf725efaf8972a94ce40ab9956e4e
commit 52a6381659ecf725efaf8972a94ce40ab9956e4e
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jun 18 16:42:10 2019 +0200
elf: Refuse to dlopen PIE objects [BZ #24323]
Another executable has already been mapped, so the dynamic linker
cannot perform relocations correctly for the second executable.
(cherry picked from commit 2c75b545de6fe3c44138799c68217a94bc669a88)
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug manual/25156] discrepancy between NSS documentation and actual behaviour/code if nsswitch.conf is absent
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Jan Hacker from comment #0)
> I raised this topic in https://github.com/golang/go/issues/35305 :
>
> https://www.gnu.org/software/libc/manual/html_node/Notes-on-NSS-
> Configuration-File.html
> states that, in absence of /etc/nsswitch.conf, ...:
> "For the hosts and networks databases the default value is dns
> [!UNAVAIL=return] files."
>
> In contrast,
> https://sourceware.org/git/?p=glibc.git;a=blob;f=nss/nsswitch.c#l157 seems
> to use "files" exclusively, if no /etc/nsswitch.conf is present.
>
> Could you please confirm that the manual (
> https://sourceware.org/git/?p=glibc.git;a=blob;f=manual/nss.texi;
> h=821469a78a298b83c60ed66884fe08e98bb741e0;hb=HEAD#l327 ) is outdated and
> does not reflect current/actual behaviour (of using "files" exclusively in
> absence of nsswitch.conf) ... and if so, update the manual?
>
> Furthermore, the
> https://sourceware.org/git/?p=glibc.git;a=blob;f=nss/nsswitch.conf#l60 uses
> "hosts: files dns" as default.
> I wonder whether it's a good idea to provide a default nsswitch.conf (which
> uses "hosts: files dns"), while nsswitch.c effectively uses only "files" as
> "default" if nsswitch.conf is absent. Wouldn't "files dns" be a more
> user-friendly default in code, as it would match the example/default
> nsswitch.conf?
(1) What is the default without nsswitch.conf?
We define DEFAULT_CONFIG in the source file that is used to define the service.
nss/hosts-lookup.c:
19 #define DATABASE_NAME hosts
20 #define DEFAULT_CONFIG "dns [!UNAVAIL=return] files"
21
22 #include "XXX-lookup.c"
So here we define it in a way that matches the manual.
Then the lookup uses a DEFAULT_CONFIG which is non-NULL and so the code you
quoted is never used for hosts.
(2) What *should* the default be?
I think it should probably be adjusted to "files dns" as we use in modern day
distributions.
In summary:
- I think we're only talking about (2) in this case, but if you have observed
(1) to be wrong, then please say so and provide some debugging details.
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To: glibc-bugs@sourceware.org
Subject: [Bug manual/25156] discrepancy between NSS documentation and actual behaviour/code if nsswitch.conf is absent
Date: Mon, 04 Nov 2019 22:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25156
--- Comment #2 from Jan Hacker <jan at hacker dot ch> ---
(In reply to Carlos O'Donell from comment #1)
> (1) What is the default without nsswitch.conf?
>
> We define DEFAULT_CONFIG in the source file that is used to define the
> service.
Yes, thank you -- a few minutes ago, djdelorie pointed this out to me on IRC.
I really only mis-read the code :-(
In the meantime, I verified it really works as documented.
> (2) What *should* the default be?
>
> I think it should probably be adjusted to "files dns" as we use in modern
> day distributions.
>
> In summary:
> - I think we're only talking about (2) in this case, but if you have
> observed (1) to be wrong, then please say so and provide some debugging
> details.
I'm really happy to hear you're open to adjusting the default!
I think that would be a user-friendly change - and, as a side-effect, it would
also resolve the original issue I raised within Go :-)
So far, I couldn't come up with any negative effects of that change...
DJ Delorie proposed to take such a discussion to libc-alpha.
Would you like me to post a corresponding thread on libc-alpha or will you
simply discuss/manage it "internally"?
Thanks!
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug manual/25156] discrepancy between NSS documentation and actual behaviour/code if nsswitch.conf is absent
Date: Mon, 04 Nov 2019 22:14:00 -0000
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--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Jan Hacker from comment #2)
> So far, I couldn't come up with any negative effects of that change...
> DJ Delorie proposed to take such a discussion to libc-alpha.
> Would you like me to post a corresponding thread on libc-alpha or will you
> simply discuss/manage it "internally"?
Please post to libc-alpha. There is no "internal" process. We should seek some
advice on the list from other core developers. Thanks for helping move the goal
post.
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Received: (qmail 83242 invoked by uid 48); 5 Nov 2019 00:16:34 -0000
From: "jan at hacker dot ch" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug manual/25156] discrepancy between NSS documentation and actual behaviour/code if nsswitch.conf is absent
Date: Tue, 05 Nov 2019 00:16:00 -0000
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--- Comment #4 from Jan Hacker <jan at hacker dot ch> ---
(In reply to Carlos O'Donell from comment #3)
> (In reply to Jan Hacker from comment #2)
> > So far, I couldn't come up with any negative effects of that change...
> > DJ Delorie proposed to take such a discussion to libc-alpha.
> > Would you like me to post a corresponding thread on libc-alpha or will you
> > simply discuss/manage it "internally"?
>
> Please post to libc-alpha. There is no "internal" process. We should seek
> some advice on the list from other core developers. Thanks for helping move
> the goal post.
Done: https://sourceware.org/ml/libc-alpha/2019-11/msg00093.html
Hope it's ok? Let's see what happens :-)
Thanks again!
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>From glibc-bugs-return-46567-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 05 09:24:42 2019
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From: "maiku.fabian at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/25139] Please add the new mnw_MM locale
Date: Tue, 05 Nov 2019 09:24:00 -0000
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |maiku.fabian at gmail dot com
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>From glibc-bugs-return-46568-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 05 10:38:44 2019
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
Date: Tue, 05 Nov 2019 10:38:00 -0000
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--- Comment #3 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12064
--> https://sourceware.org/bugzilla/attachment.cgi?id=12064&action=edit
mnw_MM slighly changed
I made some small changes an attached the changed file here.
First change was to convert the MS-DOS line endings to unix line endings.
Then I removed some trailing whitespace.
And I changed the territory from "Mon" to "Myanmar" (the Mon state is part of
Myanmar and the other locales all seem to have the country there and not some
region within a country).
All changes except the line ending change look like this:
--- localedata/locales/mnw_MM.orig 2019-11-05 11:10:59.012321146 +0100
+++ localedata/locales/mnw_MM 2019-11-05 11:09:10.119571405 +0100
@@ -11,14 +11,14 @@
LC_IDENTIFICATION
title "Mon language locale for Myanmar"
-source "Mon Localization Team
https://facebook.com/groups/monlocalization/"
+source "Mon Localization Team
https:////facebook.com//groups//monlocalization//"
address "Mawlamyine, Mon State, Myanmar"
contact "Talachan Mon"
email "talachanmon@gmail.com"
tel ""
fax ""
language "Mon"
-territory "Mon"
+territory "Myanmar"
revision "1"
date "2019-10-27"
@@ -60,31 +60,31 @@
% ဂျာန်နျူအာရဳ, ဝှေဝ်ဗြူအာရဳ, မာတ်ချ်, အေပြေယ်လ်, မေ, ဂျုန်, ဂျူလာၚ်, အဝ်ဂါတ်,
သိပ်တီဗာ, အံက်တဝ်ဗာ, နဝ်ဝါမ်ဗာ, ဒဳသီဗာ
mon
"<U1002><U103B><U102C><U1014><U103A><U1014><U103B><U1030><U1021><U102C><U101B><U1033>";/
"<U101D><U103E><U1031><U101D><U103A><U1017><U103C><U1030><U1021><U102C><U101B><U1033>";/
- "<U1019><U102C><U1010><U103A><U1001><U103B><U103A>";/
- "<U1021><U1031><U1015><U103C><U1031><U101A><U103A><U101C><U103A>";/
- "<U1019><U1031>";/
- "<U1002><U103B><U102F><U1014><U103A>";/
- "<U1002><U103B><U1030><U101C><U102C><U105A><U103A>";/
- "<U1021><U101D><U103A><U1002><U102B><U1010><U103A>";/
- "<U101E><U102D><U1015><U103A><U1010><U102E><U1017><U102C>";/
- "<U1021><U1036><U1000><U103A><U1010><U101D><U103A><U1017><U102C>";/
+ "<U1019><U102C><U1010><U103A><U1001><U103B><U103A>";/
+ "<U1021><U1031><U1015><U103C><U1031><U101A><U103A><U101C><U103A>";/
+ "<U1019><U1031>";/
+ "<U1002><U103B><U102F><U1014><U103A>";/
+ "<U1002><U103B><U1030><U101C><U102C><U105A><U103A>";/
+ "<U1021><U101D><U103A><U1002><U102B><U1010><U103A>";/
+ "<U101E><U102D><U1015><U103A><U1010><U102E><U1017><U102C>";/
+ "<U1021><U1036><U1000><U103A><U1010><U101D><U103A><U1017><U102C>";/
"<U1014><U101D><U103A><U101D><U102B><U1019><U103A><U1017><U102C>";/
"<U1012><U1033><U101E><U102E><U1017><U102C>"
% ဂျာန်, ဝှေဝ်, မာတ်, အေ, မေ, ဂျုန်, ဂျူ, အဝ်, သိပ်, အံက်, နဝ်, ဒဳ
-abmon "<U1002><U103B><U102C><U1014><U103A>";/
- "<U101D><U103E><U1031><U101D><U103A>";/
- "<U1019><U102C><U1010><U103A>";/
- "<U1021><U1031>";/
- "<U1019><U1031>";/
- "<U1002><U103B><U102F><U1014><U103A>";/
- "<U1002><U103B><U1030>";/
- "<U1021><U101D><U103A>";/
- "<U101E><U102D><U1015><U103A>";/
- "<U1021><U1036><U1000><U103A>";/
- "<U1014><U101D><U103A>";/
+abmon "<U1002><U103B><U102C><U1014><U103A>";/
+ "<U101D><U103E><U1031><U101D><U103A>";/
+ "<U1019><U102C><U1010><U103A>";/
+ "<U1021><U1031>";/
+ "<U1019><U1031>";/
+ "<U1002><U103B><U102F><U1014><U103A>";/
+ "<U1002><U103B><U1030>";/
+ "<U1021><U101D><U103A>";/
+ "<U101E><U102D><U1015><U103A>";/
+ "<U1021><U1036><U1000><U103A>";/
+ "<U1014><U101D><U103A>";/
"<U1012><U1033>"
% အဒိုတ်, စန်, အၚာ, ဗုဒ္ဓဝါ, ဗြဴဗ္တိ, သိုက်, သ္ၚိသဝ်
-day "<U1021><U1012><U102D><U102F><U1010><U103A>";/
+day "<U1021><U1012><U102D><U102F><U1010><U103A>";/
"<U1005><U1014><U103A>";/
"<U1021><U105A><U102C>";/
"<U1017><U102F><U1012><U1039><U1013><U101D><U102B>";/
@@ -92,7 +92,7 @@
"<U101E><U102D><U102F><U1000><U103A>";/
"<U101E><U1039><U105A><U102D><U101E><U101D><U103A>"
% ဒိုတ်, စန်, ၚာ, ဝါ, တိ, သိုက်, သဝ်
-abday "<U1012><U102D><U102F><U1010><U103A>";/
+abday "<U1012><U102D><U102F><U1010><U103A>";/
"<U1005><U1014><U103A>";/
"<U105A><U102C>";/
"<U101D><U102B>";/
@@ -107,7 +107,7 @@
am_pm
"<U1002><U101A><U1038>";"<U1010><U1039><U105A><U1032><U1005><U1031><U105A><U103A>"
t_fmt_ampm "%OI:%OM:%OS %p"
% ၀၀, ၀၁, ၀၂, ၀၃, ၀၄, ၀၅, ၀၆, ၀၇, ၀၈, ၀၉, ၁၀, ၁၁, ၁၂, ၁၃, ၁၄, ၁၅, ၁၆, ၁၇, ၁၈,
၁၉, ၂၀, ၂၁, ၂၂, ၂၃, ၂၄, ၂၅, ၂၆, ၂၇, ၂၈, ၂၉, ၃၀, ၃၁, ၃၂, ၃၃, ၃၄, ၃၅, ၃၆, ၃၇, ၃၈,
၃၉, ၄၀, ၄၁, ၄၂, ၄၃, ၄၄, ၄၅, ၄၆, ၄၇, ၄၈, ၄၉, ၅၀, ၅၁, ၅၂, ၅၃, ၅၄, ၅၅, ၅၆, ၅၇, ၅၈,
၅၉, ၆၀, ၆၁, ၆၂, ၆၃, ၆၄, ၆၅, ၆၆, ၆၇, ၆၈, ၆၉, ၇၀, ၇၁, ၇၂, ၇၃, ၇၄, ၇၅, ၇၆, ၇၇, ၇၈,
၇၉, ၈၀, ၈၁, ၈၂, ၈၃, ၈၄, ၈၅, ၈၆, ၈၇, ၈၈, ၈၉, ၉၀, ၉၁, ၉၂, ၉၃, ၉၄, ၉၅, ၉၆, ၉၇, ၉၈,
၉၉
-alt_digits "<U1040><U1040>";/
+alt_digits "<U1040><U1040>";/
"<U1040><U1041>";/
"<U1040><U1042>";/
"<U1040><U1043>";/
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>From glibc-bugs-return-46569-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 05 10:40:37 2019
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--- Comment #4 from Mike FABIAN <maiku.fabian at gmail dot com> ---
-source "Mon Localization Team
https://facebook.com/groups/monlocalization/"
+source "Mon Localization Team
https:////facebook.com//group//monlocalization//"
This change is because of
escape_char /
the / characters need to be quoted.
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
Date: Tue, 05 Nov 2019 11:23:00 -0000
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--- Comment #5 from Mike FABIAN <maiku.fabian at gmail dot com> ---
The double quotes at "grouping" and "mon_grouping" need to be removed as well:
diff --git a/localedata/locales/mnw_MM b/localedata/locales/mnw_MM
index 2ff60db167..cf451eda5e 100644
--- a/localedata/locales/mnw_MM
+++ b/localedata/locales/mnw_MM
@@ -212,7 +212,7 @@ END LC_TIME
LC_NUMERIC
decimal_point "."
thousands_sep ","
-grouping "3;3"
+grouping 3;3
END LC_NUMERIC
LC_MONETARY
@@ -220,7 +220,7 @@ currency_symbol "K"
int_curr_symbol "MMK "
mon_decimal_point "."
mon_thousands_sep ","
-mon_grouping "3;3"
+mon_grouping 3;3
positive_sign ""
negative_sign "-"
frac_digits 2
Otherwise one gets the error:
mnw_MM.UTF-8...locales/mnw_MM:215: LC_NUMERIC: syntax error
locales/mnw_MM:223: LC_MONETARY: syntax error
[error] LC_NUMERIC: field `grouping' not defined
[error] LC_MONETARY: field `mon_grouping' not defined
when running localedef.
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Tue, 05 Nov 2019 13:32:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=92039
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
The GCC issue is actually:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92039
I pushed my glibc fixes to Gerrit:
https://gnutoolchain-gerrit.osci.io/r/q/topic:%22gcc-10-array-bounds%22+status:open
(There are some more related commits which are dependencies.)
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/25139] Please add the new mnw_MM locale
Date: Tue, 05 Nov 2019 13:58:00 -0000
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--- Comment #6 from kokoye2007 <kokoye2007 at gmail dot com> ---
[error] LC_ADDRESS: terminology language code `mnw' not defined
[error] LC_ADDRESS: language abbreviation `mnw' not defined
[error] LC_ADDRESS: language abbreviation `mnw' not defined
we just need to fix
lang_ab - two-letter ISO 639 code if available, empty if not (when only
three-letter code is available)
lang_term - three-letter ISO 639-2/T (Terminology) code
lang_lib - three-letter ISO 639-2/B (Bibliographic) code
```
lang_ab "mnw"
lang_term "mnw"
lang_lib "mnw"
```
@@ -11,7 +11,7 @@
LC_IDENTIFICATION
title "Mon language locale for Myanmar"
-source "Mon Localization Team
https:////facebook.com//groups//monlocalization"
+source "Mon Localization Team
https:////facebook.com//groups//monlocalization//"
address "Mawlamyine, Mon State, Myanmar"
contact "Talachan Mon"
email "talachanmon@gmail.com"
@@ -212,17 +212,17 @@
LC_NUMERIC
decimal_point "."
thousands_sep ","
-grouping 3
+grouping "3;3"
END LC_NUMERIC
LC_MONETARY
currency_symbol "K"
int_curr_symbol "MMK "
-positive_sign ""
-negative_sign "-"
mon_decimal_point "."
mon_thousands_sep ","
-mon_grouping 3
+mon_grouping "3;3"
+positive_sign ""
+negative_sign "-"
frac_digits 2
int_frac_digits 2
p_cs_precedes 0
@@ -271,13 +271,10 @@
country_name "<U1017><U105F><U102C>"
country_post "Myanmar"
country_ab2 "MM"
-country_ab3 "MMR"
country_num 104
country_car "MYA"
-country_isbn 99971
% မန်
lang_name "<U1019><U1014><U103A>"
-lang_ab "mnw"
lang_term "mnw"
lang_lib "mnw"
END LC_ADDRESS
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
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--- Comment #7 from kokoye2007 <kokoye2007 at gmail dot com> ---
Created attachment 12065
--> https://sourceware.org/bugzilla/attachment.cgi?id=12065&action=edit
fix group and other
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Subject: [Bug nptl/17463] mutexes owned by a terminated thread are supposed to be owned by an imaginary thread
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What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Rich Felker from comment #2)
> One relatively inexpensive way to resolve conformance here is to have
> threads keep (in the TCB/TLS) a count of the number of recursive or
> error-checking mutexes they currently one which are not robust. Then, at
> thread exit time, if the count is not zero, instead of SYS_exit, the thread
> can zero out its TID, futex_wake it, and go into an infinite SYS_pause loop
> with all signals blocked. This in effect reserves the TID against reuse.
I think this has global, system-wide impact, because TIDs are implemented in
the kernel as task IDs, which are per-PID-namespace, not per process. I expect
this approach, while technically correct, would break quite a few workloads.
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>From glibc-bugs-return-46575-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 05 16:41:21 2019
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Subject: [Bug network/25163] New: Allow DNS stub resolver configuration for current search list practices
Date: Tue, 05 Nov 2019 16:41:00 -0000
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Bug ID: 25163
Summary: Allow DNS stub resolver configuration for current
search list practices
Product: glibc
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Priority: P1
Component: network
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There is a set of ICANN recommendations for search list processing:
https://www.icann.org/en/groups/ssac/documents/sac-064-en.pdf
I do not think this is something that can be currently configured in
/etc/resolv.conf. Eventually, we should also change the default, but the
immediate goal is to provide configuration options to follow the
recommendations if the system administrator desires that.
Defaulting the search list from the host name is also something that will need
fixing. Currently, there does not seem to be a good way to disable the search
list completely and also prevent dotless queries from reaching the root name
servers.
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--- Comment #8 from kokoye2007 <kokoye2007 at gmail dot com> ---
Comment on attachment 12065
--> https://sourceware.org/bugzilla/attachment.cgi?id=12065
fix group and other
--- /home/kokoye2007/Downloads/mnw_MM.txt 2019-11-05 20:19:40.170119388
+0630
+++ mnw_MM.txt 2019-11-05 20:22:31.981106935 +0630
@@ -11,7 +11,7 @@
LC_IDENTIFICATION
title "Mon language locale for Myanmar"
-source "Mon Localization Team
https:////facebook.com//groups//monlocalization//"
+source "Mon Localization Team
https:////facebook.com//groups//monlocalization"
address "Mawlamyine, Mon State, Myanmar"
contact "Talachan Mon"
email "talachanmon@gmail.com"
@@ -212,17 +212,17 @@
LC_NUMERIC
decimal_point "."
thousands_sep ","
-grouping "3;3"
+grouping 3
END LC_NUMERIC
LC_MONETARY
currency_symbol "K"
int_curr_symbol "MMK "
-mon_decimal_point "."
-mon_thousands_sep ","
-mon_grouping "3;3"
positive_sign ""
negative_sign "-"
+mon_decimal_point "."
+mon_thousands_sep ","
+mon_grouping 3
frac_digits 2
int_frac_digits 2
p_cs_precedes 0
@@ -271,12 +271,12 @@
country_name "<U1017><U105F><U102C>"
country_post "Myanmar"
country_ab2 "MM"
+country_ab3 "MMR"
country_num 104
country_car "MYA"
+country_isbn 99971
% မန်
lang_name "<U1019><U1014><U103A>"
-lang_term "mnw"
-lang_lib "mnw"
END LC_ADDRESS
LC_TELEPHONE
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
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is obsolete| |
--- Comment #9 from kokoye2007 <kokoye2007 at gmail dot com> ---
Created attachment 12066
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mnw_MM
Fix and Update
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--- Comment #10 from kokoye2007 <kokoye2007 at gmail dot com> ---
Created attachment 12067
--> https://sourceware.org/bugzilla/attachment.cgi?id=12067&action=edit
mnw_MM fix groups error message
Fix Diff File
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
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--- Comment #11 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to kokoye2007 from comment #9)
> Created attachment 12066 [details]
> mnw_MM
>
> Fix and Update
lang_ab "mnw"
I think lang_ab should be empty because Mon does not have a iso639-1 code,
i.e.
lang_ab ""
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Mike Fabian <mfabian@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c5fbd7c3ea4d3f8863e8d195feda64c4a8c29e8a
commit c5fbd7c3ea4d3f8863e8d195feda64c4a8c29e8a
Author: Talachan Mon <talachanmon@gmail.com>
Date: Tue Nov 5 10:35:55 2019 +0100
Add new locale: mnw_MM (Mon language spoken in Myanmar) [BZ #25139]
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--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Mike Fabian <mfabian@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4ecd584908109db3ac9bf4aca307ddd44e029275
commit 4ecd584908109db3ac9bf4aca307ddd44e029275
Author: Mike FABIAN <mfabian@redhat.com>
Date: Tue Nov 5 12:26:58 2019 +0100
Add mnw language code [BZ #25139]
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Mike Fabian <mfabian@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c5fbd7c3ea4d3f8863e8d195feda64c4a8c29e8a
commit c5fbd7c3ea4d3f8863e8d195feda64c4a8c29e8a
Author: Talachan Mon <talachanmon@gmail.com>
Date: Tue Nov 5 10:35:55 2019 +0100
Add new locale: mnw_MM (Mon language spoken in Myanmar) [BZ #25139]
--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Mike Fabian <mfabian@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4ecd584908109db3ac9bf4aca307ddd44e029275
commit 4ecd584908109db3ac9bf4aca307ddd44e029275
Author: Mike FABIAN <mfabian@redhat.com>
Date: Tue Nov 5 12:26:58 2019 +0100
Add mnw language code [BZ #25139]
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
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commit be6b16d975683e6cca57852cd4cfe715b2a9d8b1
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Nov 7 18:15:18 2019 +0100
login: Acquire write lock early in pututline [BZ #24882]
It has been reported that due to lack of fairness in POSIX file
locking, the current reader-to-writer lock upgrade can result in
lack of forward progress. Acquiring the write lock directly
hopefully avoids this issue if there are only writers.
This also fixes bug 24882 due to the cache revalidation in
__libc_pututline.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
Change-Id: I57e31ae30719e609a53505a0924dda101d46372e
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/23403] Wrong alignment of TLS variables
Date: Thu, 07 Nov 2019 22:13:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8646009efd1df151cc796055c7f6306495835577
commit 8646009efd1df151cc796055c7f6306495835577
Author: Stefan Liebler <stli@linux.ibm.com>
Date: Wed Feb 6 09:06:34 2019 +0100
Fix alignment of TLS variables for tls variant TLS_TCB_AT_TP [BZ #23403]
The alignment of TLS variables is wrong if accessed from within a thread
for architectures with tls variant TLS_TCB_AT_TP.
For the main thread the static tls data is properly aligned.
For other threads the alignment depends on the alignment of the thread
pointer as the static tls data is located relative to this pointer.
This patch adds this alignment for TLS_TCB_AT_TP variants in the same way
as it is already done for TLS_DTV_AT_TP. The thread pointer is also already
properly aligned if the user provides its own stack for the new thread.
This patch extends the testcase nptl/tst-tls1.c in order to check the
alignment of the tls variables and it adds a pthread_create invocation
with a user provided stack.
The test itself is migrated from test-skeleton.c to test-driver.c
and the missing support functions xpthread_attr_setstack and
xposix_memalign
are added.
ChangeLog:
[BZ #23403]
* nptl/allocatestack.c (allocate_stack): Align pointer pd for
TLS_TCB_AT_TP tls variant.
* nptl/tst-tls1.c: Migrate to support/test-driver.c.
Add alignment checks.
* support/Makefile (libsupport-routines): Add xposix_memalign and
xpthread_setstack.
* support/support.h: Add xposix_memalign.
* support/xthread.h: Add xpthread_attr_setstack.
* support/xposix_memalign.c: New File.
* support/xpthread_attr_setstack.c: Likewise.
(cherry picked from commit bc79db3fd487daea36e7c130f943cfb9826a41b4)
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/23403] Wrong alignment of TLS variables
Date: Thu, 07 Nov 2019 22:13:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by DJ Delorie
<dj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cedb3e47c68d319607736a820da2d5b3b8ddff6f
commit cedb3e47c68d319607736a820da2d5b3b8ddff6f
Author: Stefan Liebler <stli@linux.ibm.com>
Date: Wed Feb 6 09:06:34 2019 +0100
Fix alignment of TLS variables for tls variant TLS_TCB_AT_TP [BZ #23403]
The alignment of TLS variables is wrong if accessed from within a thread
for architectures with tls variant TLS_TCB_AT_TP.
For the main thread the static tls data is properly aligned.
For other threads the alignment depends on the alignment of the thread
pointer as the static tls data is located relative to this pointer.
This patch adds this alignment for TLS_TCB_AT_TP variants in the same way
as it is already done for TLS_DTV_AT_TP. The thread pointer is also already
properly aligned if the user provides its own stack for the new thread.
This patch extends the testcase nptl/tst-tls1.c in order to check the
alignment of the tls variables and it adds a pthread_create invocation
with a user provided stack.
The test itself is migrated from test-skeleton.c to test-driver.c
and the missing support functions xpthread_attr_setstack and
xposix_memalign
are added.
ChangeLog:
[BZ #23403]
* nptl/allocatestack.c (allocate_stack): Align pointer pd for
TLS_TCB_AT_TP tls variant.
* nptl/tst-tls1.c: Migrate to support/test-driver.c.
Add alignment checks.
* support/Makefile (libsupport-routines): Add xposix_memalign and
xpthread_setstack.
* support/support.h: Add xposix_memalign.
* support/xthread.h: Add xpthread_attr_setstack.
* support/xposix_memalign.c: New File.
* support/xpthread_attr_setstack.c: Likewise.
(cherry picked from commit bc79db3fd487daea36e7c130f943cfb9826a41b4)
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From: "danglin at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Thu, 07 Nov 2019 23:51:00 -0000
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John David Anglin <danglin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2019-11-07
CC| |danglin at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #7 from John David Anglin <danglin at gcc dot gnu.org> ---
The warning from libc-tls.c breaks build on hppa. I was tried to test a new
hppa gcc change.
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/22850] Harden TCB against stack protector bypass via overwrite of stack_guard
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Kamlesh Kumar <kamleshbhalui at gmail dot com> changed:
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CC| |kamleshbhalui at gmail dot com
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/24882] login: pututline uses potentially outdated cache
Date: Fri, 08 Nov 2019 07:44:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in glibc 2.31.
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Subject: [Bug malloc/25183] New: calloc() doesn't use the tcache
Date: Sun, 10 Nov 2019 13:20:00 -0000
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Bug ID: 25183
Summary: calloc() doesn't use the tcache
Product: glibc
Version: 2.30
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Priority: P2
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__libc_calloc() doesn't have any tcache allocation code like __libc_malloc().
Because __libc_calloc() allocates directly from _int_malloc() it can't allocate
from the tcache.
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From: "rjones at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
Date: Mon, 11 Nov 2019 08:57:00 -0000
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--- Comment #11 from Richard Jones <rjones at redhat dot com> ---
If a program fails it should print an error on stderr.
(This is particularly important for libguestfs because
we turn the stderr message into an API error, but applies
in general). In this case (before Florian's change) ldd
fails but doesn't print anything useful on stderr.
Before you say it, it doesn't work to look at stdout, since
there are plenty of programs which print tons of output
on stdout before failing, and we want to identify just the
error message to report back through the API.
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Subject: [Bug dynamic-link/25157] Audit cookie for the dynamic loader is not initialized correctly
Date: Mon, 11 Nov 2019 10:07:00 -0000
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Subject: [Bug malloc/25183] calloc() doesn't use the tcache
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Subject: [Bug nss/25156] discrepancy between NSS documentation and actual behaviour/code if nsswitch.conf is absent
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug regex/25149] Array bounds violation in proceed_next_node
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Subject: [Bug dynamic-link/24969] dl-tunables doesn't handle ENOMEM properly
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>From glibc-bugs-return-46598-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 11 11:27:17 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug regex/11053] Wrong results with backreferences
Date: Mon, 11 Nov 2019 11:27:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andreas Schwab <schwab@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fc141ea78ee3d87c67b18488827fe2d89c9343e7
commit fc141ea78ee3d87c67b18488827fe2d89c9343e7
Author: Andreas Schwab <schwab@suse.de>
Date: Wed Oct 30 10:38:36 2019 +0100
Fix array bounds violation in regex matcher (bug 25149)
If the regex has more subexpressions than the number of elements allocated
in the regmatch_t array passed to regexec then proceed_next_node may
access the regmatch_t array outside its bounds.
No testcase added because even without this bug it would then crash in
pop_fail_stack which is bug 11053.
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>From glibc-bugs-return-46597-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 11 11:27:17 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug regex/25149] Array bounds violation in proceed_next_node
Date: Mon, 11 Nov 2019 11:27:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andreas Schwab <schwab@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fc141ea78ee3d87c67b18488827fe2d89c9343e7
commit fc141ea78ee3d87c67b18488827fe2d89c9343e7
Author: Andreas Schwab <schwab@suse.de>
Date: Wed Oct 30 10:38:36 2019 +0100
Fix array bounds violation in regex matcher (bug 25149)
If the regex has more subexpressions than the number of elements allocated
in the regmatch_t array passed to regexec then proceed_next_node may
access the regmatch_t array outside its bounds.
No testcase added because even without this bug it would then crash in
pop_fail_stack which is bug 11053.
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To: glibc-bugs@sourceware.org
Subject: [Bug regex/25149] Array bounds violation in proceed_next_node
Date: Mon, 11 Nov 2019 11:49:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Blocks| |11053
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed in 2.31.
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=11053
[Bug 11053] Wrong results with backreferences
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Subject: [Bug regex/11053] Wrong results with backreferences
Date: Mon, 11 Nov 2019 11:49:00 -0000
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Bug 11053 depends on bug 25149, which changed state.
Bug 25149 Summary: Array bounds violation in proceed_next_node
https://sourceware.org/bugzilla/show_bug.cgi?id=25149
What |Removed |Added
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Subject: [Bug regex/11053] Wrong results with backreferences
Date: Mon, 11 Nov 2019 11:49:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |25149
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=25149
[Bug 25149] Array bounds violation in proceed_next_node
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>From glibc-bugs-return-46602-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 11 18:33:23 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
Date: Mon, 11 Nov 2019 18:33:00 -0000
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--- Comment #12 from Andreas Schwab <schwab@linux-m68k.org> ---
But this is not an error message.
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>From glibc-bugs-return-46603-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 11 18:43:53 2019
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From: "rjones at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
Date: Mon, 11 Nov 2019 18:43:00 -0000
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--- Comment #13 from Richard Jones <rjones at redhat dot com> ---
Invoking the tool to "print shared object dependencies"
on the wrong file type, which then prints a message, and
then exits with an error code is pretty much the definition
of an error message, whether or not someone years ago forgot to
prefix the error message with "ldd: ".
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>From glibc-bugs-return-46604-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 11 19:53:15 2019
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Subject: [Bug dynamic-link/24150] ldd should print "not a dynamic executable" to standard error
Date: Mon, 11 Nov 2019 19:53:00 -0000
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--- Comment #14 from Andreas Schwab <schwab@linux-m68k.org> ---
The message is formatted with a leading tab, which makes it unambigously clear
that this is not an error message, but rather normal output.
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>From glibc-bugs-return-46605-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 12 02:00:33 2019
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From: "bluebat at member dot fsf.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/24409] Updates for TW locales
Date: Tue, 12 Nov 2019 02:00:00 -0000
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--- Comment #6 from Wei-Lun Chao <bluebat at member dot fsf.org> ---
[PING]
Testing packages OK for fedora 31:
https://github.com/rpmsphere/noarch/raw/master/g/glibc-sinitic-langpacks-2.30-99.noarch.rpm
https://github.com/rpmsphere/noarch/raw/master/l/language-pack-cmn-2019.11-1.noarch.rpm
https://github.com/rpmsphere/noarch/raw/master/l/language-pack-yue-2019.11-1.noarch.rpm
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>From glibc-bugs-return-46606-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 12 02:11:46 2019
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
Date: Tue, 12 Nov 2019 02:11:00 -0000
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-11-12
Ever confirmed|0 |1
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>From glibc-bugs-return-46607-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 12 12:55:25 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Tue, 12 Nov 2019 12:55:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cba932a5a9e91cffd7f4172d7e91f9b2efb1f84b
commit cba932a5a9e91cffd7f4172d7e91f9b2efb1f84b
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Nov 12 12:41:34 2019 +0100
slotinfo in struct dtv_slotinfo_list should be flexible array [BZ #25097]
GCC 10 will warn about subscribing inner length zero arrays. Use a GCC
extension in csu/libc-tls.c to allocate space for the static_slotinfo
variable. Adjust nptl_db so that the type description machinery does
not attempt to determine the size of the flexible array member slotinfo.
Change-Id: I51be146a7857186a4ede0bb40b332509487bdde8
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>From glibc-bugs-return-46608-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 12 14:20:58 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug locale/17318] [RFE] Provide a C.UTF-8 locale by default
Date: Tue, 12 Nov 2019 14:20:00 -0000
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--- Comment #13 from Carlos O'Donell <carlos at redhat dot com> ---
When implementing this we should consider having C.UTF-8 as builtin, and if we
don't do this we should file another bug to make it builtin since that would
simplify a lot of code and possibly make things faster.
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>From glibc-bugs-return-46609-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 12 16:17:34 2019
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Subject: [Bug libc/24882] login: pututline uses potentially outdated cache
Date: Tue, 12 Nov 2019 16:17:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=76a7c103eb9060f9e3ba01d073ae4621a17d8b46
commit 76a7c103eb9060f9e3ba01d073ae4621a17d8b46
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Nov 12 12:02:57 2019 +0100
login: Introduce matches_last_entry to utmp processing
This simplifies internal_getut_nolock and fixes a regression,
introduced in commit be6b16d975683e6cca57852cd4cfe715b2a9d8b1
("login: Acquire write lock early in pututline [BZ #24882]")
in pututxline because __utmp_equal can only compare process-related
utmp entries.
Fixes: be6b16d975683e6cca57852cd4cfe715b2a9d8b1
Change-Id: Ib8a85002f7f87ee41590846d16d7e52bdb82f5a5
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From: "emilio at crisal dot io" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] New: glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Tue, 12 Nov 2019 18:25:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25189
Bug ID: 25189
Summary: glibc's __glibc_has_include causes issues with clang
-frewrite-includes
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
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Reporter: emilio at crisal dot io
CC: drepper.fsp at gmail dot com
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Which is necessary to to e.g., submit the translation unit to a distributed
compiler.
See https://bugs.llvm.org/show_bug.cgi?id=43982 for a reduced test-case since I
initially thought this was a clang bug.
Apparently doing this is invalid C++ per:
* http://eel.is/c++draft/cpp.cond#7.sentence-2
(See https://bugs.llvm.org/show_bug.cgi?id=37990)
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Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
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--- Comment #1 from Emilio Cobos Álvarez [:emilio] <emilio at crisal dot io> ---
I sent a patch for this:
https://sourceware.org/ml/libc-alpha/2019-11/msg00431.html
First patch, so please bear with me :)
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Subject: [Bug libc/24271] tdestroy() doesn't release resources
Date: Wed, 13 Nov 2019 16:13:00 -0000
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--- Comment #9 from polazhinets.a at gmail dot com ---
Just was cleaning out my e-mail and found this page. Feel ashamed for being
that rude 9 months ago and forgetting to note, that
tdestroy(tree, cleaner);
malloc_trim(0); // explicitly ask heap manager to release resources
works well...
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Subject: [Bug libc/24271] tdestroy() doesn't release resources
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #10 from Florian Weimer <fweimer at redhat dot com> ---
See comment 9.
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=70c6e15654928c603c6d24bd01cf62e7a8e2ce9b
commit 70c6e15654928c603c6d24bd01cf62e7a8e2ce9b
Author: Florian Weimer <fweimer@redhat.com>
Date: Sun Nov 3 11:39:56 2019 +0100
Redefine _IO_iconv_t to store a single gconv step pointer [BZ #25097]
libio can only deal with gconv conversions which consist of a single
step. Not using __gconv_info simplifies the data structures somewhat.
This eliminates a new GCC 10 warning about subscribing an inner
zero-length array.
Tested on x86_64-linux-gnu with mainline GCC. Built with
build-many-glibcs.py, also with mainline GCC. Due to GCC PR 92039,
there are failures left on 32-bit architectures with float128 support.
Change-Id: I8b4c489b619a53154712ff32e1b6f13bb92d4203
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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--- Comment #10 from dave.anglin at bell dot net ---
On 2019-11-13 12:19 p.m., cvs-commit at gcc dot gnu.org wrote:
> Tested on x86_64-linux-gnu with mainline GCC. Built with
> build-many-glibcs.py, also with mainline GCC. Due to GCC PR 92039,
> there are failures left on 32-bit architectures with float128 support.
The following warning is still pressent on hppa:
gcc rtld.c -c -std=gnu11 -fgnu89-inline -g -O2 -Wall -Wwrite-strings -Wundef
-W
error -fmerge-all-constants -frounding-math -fno-stack-protector
-Wstrict-protot
ypes -Wold-style-definition -fmath-errno -fPIC -mdisable-fpregs
-D'SYSCONFDIR="/etc"' -ftls-model=initial-exec -I../include
-I/home/dave/gnu/glibc/objdir/elf -I/home/dave/gnu/glibc/objdir
-I../sysdeps/unix/sysv/linux/hppa -I../sysdeps/hppa/nptl
-I../sysdeps/unix/sysv/linux/include -I../sysdeps/unix/sysv/linux
-I../sysdeps/nptl -I../sysdeps/pthread -I../sysdeps/gnu
-I../sysdeps/unix/inet -I../sysdeps/unix/sysv -I../sysdeps/unix
-I../sysdeps/posix -I../sysdeps/hppa/hppa1.1 -I../sysdeps/wordsize-32
-I../sysdeps/ieee754/flt-32 -I../sysdeps/ieee754/dbl-64 -I../sysdeps/hppa/fpu
-I../sysdeps/hppa -I../sysdeps/ieee754 -I../sysdeps/generic
-I.. -I../libio -I. -nostdinc -isystem
/home/dave/opt/test/lib/gcc/hppa-linux-gnu/10.0.0/include -isystem
/home/dave/opt/test/lib/gcc/hppa-linux-gnu/10.0.0/include-fixed -isystem
/usr/include -D_LIBC_REENTRANT -include
/home/dave/gnu/glibc/objdir/libc-modules.h -DMODULE_NAME=rtld -include
../include/libc-symbols.h -DPIC -DSHARED -DTOP_NAMESPACE=glibc -o
/home/dave/gnu/glibc/objdir/elf/rtld.os -MD -MP -MF
/home/dave/gnu/glibc/objdir/elf/rtld.os.dt -MT
/home/dave/gnu/glibc/objdir/elf/rtld.os
rtld.c: In function 'dl_main':
rtld.c:1016:27: error: array subscript 'cnt' is outside the bounds of an
interior zero-length array 'struct auditstate[0]'
[-Werror=zero-length-bounds]
1016 | GL(dl_rtld_map).l_audit[cnt].cookie = (intptr_t) &GL(dl_rtld_map);
In file included from ../include/dlfcn.h:4,
from rtld.c:20:
../include/link.h:335:7: note: while referencing 'l_audit'
335 | } l_audit[0];
| ^~~~~~~
cc1: all warnings being treated as errors
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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--- Comment #11 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to dave.anglin from comment #10)
> On 2019-11-13 12:19 p.m., cvs-commit at gcc dot gnu.org wrote:
> > Tested on x86_64-linux-gnu with mainline GCC. Built with
> > build-many-glibcs.py, also with mainline GCC. Due to GCC PR 92039,
> > there are failures left on 32-bit architectures with float128 support.
> The following warning is still pressent on hppa:
Sorry, this was pushed out of order.
The following patches still need review:
Properly initialize audit cookie for the dynamic loader [BZ #25157]
<https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/486>
Introduce link_map_audit_state accessor function
<https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/487>
This patch has already been reviewed, but it depends on the other ones:
Avoid zero-length array at the end of struct link_map [BZ #25097]
<https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/488>
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>From glibc-bugs-return-46617-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 14 18:28:54 2019
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From: "kirill-782 at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/25192] New: getaddrinfo can cause crash in the application.
Date: Thu, 14 Nov 2019 18:28:00 -0000
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Bug ID: 25192
Summary: getaddrinfo can cause crash in the application.
Product: glibc
Version: 2.27
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: kirill-782 at yandex dot ru
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Created attachment 12075
--> https://sourceware.org/bugzilla/attachment.cgi?id=12075&action=edit
Call stack
I’m developing an application. I needed a curl library to verify authorization.
In a new thread, requests are created and responses are later checked. But
sometimes the application crashes and produces the following error: unexpected
error 9 on netlink descriptor. Initially, I thought that the problem was in
curl and in the grip of the answer to the question I started issue in the curl
project: https://github.com/curl/curl/issues/3386. Maybe you need a special
script for use in threads? Call stack will be in the attachment (unfortunately
I do not have a text option)
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>From glibc-bugs-return-46618-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 14 19:35:25 2019
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/25192] getaddrinfo can cause crash in the application.
Date: Thu, 14 Nov 2019 19:35:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2019-11-14
CC| |fweimer at redhat dot com
Ever confirmed|0 |1
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
A crash like this indicates that there is a file descriptor race somewhere in
your process: another thread has closed the descriptor that getaddrinfo is
using.
We currently do not know of any such races within glibc itself. Note that such
races could be anywhere: code you have written, a library you are using has an
internal bug, or you are using a library interface incorrectly.
If you can reproduce this reliably, I'd suggest to set a breakpoint on close,
trying to catch the last close before the clash. It's possible that you have
to use a Systemtap probe to avoid obscuring the race.
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Thu, 14 Nov 2019 19:51:00 -0000
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>From glibc-bugs-return-46620-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 15 12:24:40 2019
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug dynamic-link/25157] Audit cookie for the dynamic loader is not initialized correctly
Date: Fri, 15 Nov 2019 12:24:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c7bf5ceab6ec776ac7350d3b0190776bf532ac54
commit c7bf5ceab6ec776ac7350d3b0190776bf532ac54
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Nov 2 21:55:35 2019 +0100
Properly initialize audit cookie for the dynamic loader [BZ #25157]
The l_audit array is indexed by audit module, not audit function.
Change-Id: I180eb3573dc1c57433750f5d8cb18271460ba5f2
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e21a7867713c87d0b0698254685d414d811d72b2
commit e21a7867713c87d0b0698254685d414d811d72b2
Author: Florian Weimer <fweimer@redhat.com>
Date: Sun Nov 3 11:20:23 2019 +0100
Avoid zero-length array at the end of struct link_map [BZ #25097]
l_audit ends up as an internal array with _rtld_global, and GCC 10
warns about this.
This commit does not change the layout of _rtld_global, so it is
suitable for backporting. Future changes could allocate more of the
audit state dynamically and remove it from always-allocated data
structures, to optimize the common case of inactive auditing.
Change-Id: Ic911100730f9124d4ea977ead8e13cee64b84d45
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Subject: [Bug dynamic-link/25157] Audit cookie for the dynamic loader is not initialized correctly
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Florian Weimer <fweimer at redhat dot com> changed:
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Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in glibc 2.31.
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>From glibc-bugs-return-46623-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 15 21:42:34 2019
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Subject: [Bug malloc/25194] New: malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
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Bug ID: 25194
Summary: malloc.c: do_set_mxfast incorrectly casts the mallopt
value to an unsigned
Product: glibc
Version: unspecified
Status: NEW
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Priority: P2
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do_set_mxfast incorrectly casts signed int value to a large size_t value.
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>From glibc-bugs-return-46624-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 15 21:45:05 2019
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Subject: [Bug malloc/25194] malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
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--- Comment #1 from Patsy Franklin <pfrankli at redhat dot com> ---
1. glibc-2.28/malloc/malloc.c:5149: unsigned_compare: This
greater-than-or-equal-to-zero comparison of an unsigned value is always true.
"value >= 0UL".
# 5147| do_set_mxfast (size_t value)
# 5148| {
# 5149|-> if (value >= 0 && value <= MAX_FAST_SIZE)
# 5150| {
# 5151| LIBC_PROBE (memory_mallopt_mxfast, 2, value, get_max_fast ());
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/25194] malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
Date: Fri, 15 Nov 2019 21:54:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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CC| |carlos at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
We have lost the range checking of the integer value passed to mallopt. I
expect we will have to refactor that out again.
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>From glibc-bugs-return-46626-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 15 22:01:41 2019
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Fri, 15 Nov 2019 22:01:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #13 from Florian Weimer <fweimer at redhat dot com> ---
I think we need one more change:
hurd: Suppress GCC 10 -Warray-bounds warning in init-first.c [BZ #25097]
https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/657
For this one, I do not have a cleanup that avoids the issue.
You also need to make sure that you have a recent version of GCC trunk with PR
92039 fixed (r278281 or later).
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>From glibc-bugs-return-46627-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 15 22:05:15 2019
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Subject: [Bug malloc/25194] malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
Date: Fri, 15 Nov 2019 22:05:00 -0000
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
There is nothing wrong with the range checking, it's just that the first
condition is redundant.
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>From glibc-bugs-return-46628-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 15 22:16:44 2019
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From: "slyfox at inbox dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug locale/25195] New: localedef does not return error status when warnings were issued.
Date: Fri, 15 Nov 2019 22:16:00 -0000
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Bug ID: 25195
Summary: localedef does not return error status when warnings
were issued.
Product: glibc
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The bug was originally discovered in https://bugs.gentoo.org/697908 by Chris
Slycord. There we ended up passing invalid charset (with trailing '\r') to
localedef. Here is the reproducer:
"""
# /usr/bin/localedef -c --no-archive -i en_US -f $'ISO-8859-1\r' -A
/usr/share/locale/locale.alias --prefix / en_US |& cat -v
failed to set locale!
[error] character map file `ISO-8859-1^M' not found: No such file or directory
# echo $?
0
"""
'man localedef' says:
"""
EXIT STATUS
One of the following exit values can be returned by localedef:
0 Command completed successfully.
1 Warnings or errors occurred, output files were written.
4 Errors encountered, no output created.
"""
I'm not sure if output was created but the '[error]' warning (or error?) was
issued.
I think the exit status should be non-zero.
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Subject: [Bug locale/25195] localedef does not return error status when warnings were issued.
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Sergei Trofimovich <slyfox at inbox dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
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Subject: [Bug locale/25195] localedef does not return error status when warnings were issued.
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--- Comment #1 from Sergei Trofimovich <slyfox at inbox dot ru> ---
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=f16491eb8ebbef402f3da6f4035ce70fe36dec97
might be related.
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Subject: [Bug malloc/25194] malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
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--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Andreas Schwab from comment #3)
> There is nothing wrong with the range checking, it's just that the first
> condition is redundant.
The original range check was in mallopt to detect a negative mxfast value and
return 0 as a result (mallopt failure). We no longer do that range detection in
mallopt, so negative mxfast values don't cause mallopt to fail anymore.
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Subject: [Bug malloc/25194] malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
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--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Carlos O'Donell from comment #4)
> (In reply to Andreas Schwab from comment #3)
> > There is nothing wrong with the range checking, it's just that the first
> > condition is redundant.
>
> The original range check was in mallopt to detect a negative mxfast value
> and return 0 as a result (mallopt failure). We no longer do that range
> detection in mallopt, so negative mxfast values don't cause mallopt to fail
> anymore.
Not just negative, but out of range, and return a failure. Now mallopt always
succeeds. This is a change in semantics from the previous code and I didn't
notice it during review.
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--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Sergei Trofimovich from comment #0)
> """
> # /usr/bin/localedef -c --no-archive -i en_US -f $'ISO-8859-1\r' -A
> /usr/share/locale/locale.alias --prefix / en_US |& cat -v
> failed to set locale!
> [error] character map file `ISO-8859-1^M' not found: No such file or
> directory
>
> # echo $?
> 0
> """
You ran two commands. The $? is the exit code of the second command in the
pipe. The exit code of cat was 0 (success) which is expected.
If you run just the localedef command:
/usr/bin/localedef -c --no-archive -i en_US -f 'ISO-8859-1\r' -A
/usr/share/locale/locale.alias --prefix / en_US
[error] character map file `ISO-8859-1\r' not found: No such file or directory
[error] cannot write output files to `//usr/lib/locale/en_US/': Permission
denied
echo $?
4
You get output 4 as expected because errors were encountered and no output was
created.
Note: I removed the '$' in front of the charmap because it doesn't seem to
apply to the example you were trying to create.
Does the above explain why you see an exit code of zero from the last command
in the pipe sequence?
In Bash you can use PIPESTATUS to review the exit status of processes in the
last executed foreground pipeline.
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>From glibc-bugs-return-46634-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 16 00:48:54 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug locale/25195] localedef does not return error status when warnings were issued.
Date: Sat, 16 Nov 2019 00:48:00 -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)
> Note: I removed the '$' in front of the charmap because it doesn't seem to
> apply to the example you were trying to create.
Sorry, forgot this was ANSI-C quoting.
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>From glibc-bugs-return-46635-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 16 08:09:52 2019
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/25194] malloc.c: do_set_mxfast incorrectly casts the mallopt value to an unsigned
Date: Sat, 16 Nov 2019 08:09:00 -0000
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--- Comment #6 from Andreas Schwab <schwab@linux-m68k.org> ---
The range check still works as before, it's just that mallopt ignores the
return value.
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Subject: [Bug locale/25195] localedef does not return error status when warnings were issued.
Date: Sat, 16 Nov 2019 11:14:00 -0000
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--- Comment #4 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Carlos O'Donell from comment #2)
> (In reply to Sergei Trofimovich from comment #0)
> > """
> > # /usr/bin/localedef -c --no-archive -i en_US -f $'ISO-8859-1\r' -A
> > /usr/share/locale/locale.alias --prefix / en_US |& cat -v
> > failed to set locale!
> > [error] character map file `ISO-8859-1^M' not found: No such file or
> > directory
> >
> > # echo $?
> > 0
> > """
>
> You ran two commands. The $? is the exit code of the second command in the
> pipe. The exit code of cat was 0 (success) which is expected.
Ah, my apologies for confusion. I tested the command before adding 'cat' for
escaping. Here is to original breakage:
# /usr/bin/localedef -c --no-archive -i en_US -f $'ISO-8859-1\r' -A
/usr/share/locale/locale.alias --prefix / en_US; echo $?
failed to set locale!
' not found: No such file or directory
0
> If you run just the localedef command:
>
> /usr/bin/localedef -c --no-archive -i en_US -f 'ISO-8859-1\r' -A
> /usr/share/locale/locale.alias --prefix / en_US
> [error] character map file `ISO-8859-1\r' not found: No such file or
> directory
> [error] cannot write output files to `//usr/lib/locale/en_US/': Permission
> denied
> echo $?
> 4
I think you have a different, permission-related problem here.
(In reply to Carlos O'Donell from comment #3)
> (In reply to Carlos O'Donell from comment #2)
> > Note: I removed the '$' in front of the charmap because it doesn't seem to
> > apply to the example you were trying to create.
>
> Sorry, forgot this was ANSI-C quoting.
'\r' just makes the output most confusing :) Looks like it can be reproduced by
any invalid sharset name:
# /usr/bin/localedef -c --no-archive -i en_US -f 'ISO-8859-1-whee' -A
/usr/share/locale/locale.alias --prefix / en_US; echo $?
failed to set locale!
[error] character map file `ISO-8859-1-whee' not found: No such file or
directory
0
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>From glibc-bugs-return-46637-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 16 14:42:23 2019
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Subject: [Bug build/25097] new -Warray-bounds with GCC 10
Date: Sat, 16 Nov 2019 14:42:00 -0000
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--- Comment #14 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=84df7a4637be8ecb545df3501cc724f3a4d53c46
commit 84df7a4637be8ecb545df3501cc724f3a4d53c46
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Nov 15 18:36:58 2019 +0100
hurd: Suppress GCC 10 -Warray-bounds warning in init-first.c [BZ #25097]
The trampoline code should really be rewritten in assembler because
this is all very undefined at the C level.
Change-Id: Ided58244ca0ee48892519faac5ac222a4e02dec4
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>From glibc-bugs-return-46638-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Nov 16 14:46:57 2019
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Subject: [Bug libc/25097] new -Warray-bounds with GCC 10
Date: Sat, 16 Nov 2019 14:46:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Component|build |libc
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #15 from Florian Weimer <fweimer at redhat dot com> ---
I believed this category of warnings has now been addressed for glibc 2.31.
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>From glibc-bugs-return-46639-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 03:52:39 2019
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Subject: [Bug nptl/11588] pthread condvars are not priority inheritance aware
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adamlaska <adamlaska.ivanov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |adamlaska.ivanov at gmail dot com
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>From glibc-bugs-return-46640-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 09:28:37 2019
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Subject: [Bug libc/25201] New: __libc_fork: parent thread stack corruption while looping through 'allp' for calling parent_handler
Date: Mon, 18 Nov 2019 09:28:00 -0000
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Bug ID: 25201
Summary: __libc_fork: parent thread stack corruption while
looping through 'allp' for calling parent_handler
Product: glibc
Version: 2.17
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: vibrysec at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Environment: Redhat 7.7/libc-2.17.so
Reproducible: first occurence (for thousands of installations).
Description: at production, proprietary application forks to call /bin/df
utility. It does it twice in sequence (ie not parallel invocation), one after
another. Crash happens within fork library call, after fork has been performed.
Parent process is crashing.
Details:
Parent is going to go through loop:
/* Run the handlers registered for the parent. */
while (allp != NULL)
{
if (allp->handler->parent_handler != NULL) // CRASH here.
allp->handler->parent_handler ();
if (atomic_decrement_and_test (&allp->handler->refcntr)
&& allp->handler->need_signal)
lll_futex_wake (allp->handler->refcntr, 1, LLL_PRIVATE);
allp = allp->next;
}
__fork_handlers keeps one handler:
(gdb) x/x 0x7f084f08dd78
0x7f084f08dd78 <__fork_handlers>: 0x00007f084f08be48
(gdb) print__fork_handlers 0x00007f084f08be48
$1 = {
next = 0x0 <main>,
prepare_handler = 0x0 <main>,
parent_handler = 0x0 <main>,
child_handler = 0x7f084eaac260 <__reclaim_stacks>,
dso_handle = 0x0 <main>,
refcntr = 2,
need_signal = 0
}
(gdb) x/i 0x00007f084f08be48
0x7f084f08be48 <fork_handler_pool+8>: add %al,(%rax)
allp pointer ($rbx) points to the bottom of stack - implies it points to
the very first element of used_handlers list, thus the one that wraps
__reclaim_stacks handler.
(gdb) info reg $rsp
rsp 0x7f082d7f39d0 0x7f082d7f39d0
(gdb) info reg $rbx
rbx 0x7f082d7f39d0 139673099778512
but used_handler is corrupted - 'handler' value should be 0x7f084f08be48
instead of 0x13a0f00013a0f.
(gdb) p *(struct used_handler*)$rbx
$14 = {
handler = 0x13a0f00013a0f,
next = 0x7f082d7fa9e0
}
10 pages of stack have been searched for 0x7f084f08be48 - not found.
As seen above, proprietary application does not register any handlers to
fork call.
0x13a0f00013a0f - looks somewhat repeated. I'm searching for this value
within the core, but anyway:
Have You already met conditions above? if Yes, is there a fix?
Does it look like a bug within libc?
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>From glibc-bugs-return-46641-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 10:30:46 2019
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Subject: [Bug libc/25201] __libc_fork: parent thread stack corruption while looping through 'allp' for calling parent_handler
Date: Mon, 18 Nov 2019 10:30:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
The atfork handler handing has been refactored in version 2.28 (commit
27761a1042). Does the crash still happen?
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>From glibc-bugs-return-46642-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 10:43:39 2019
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Subject: [Bug libc/25201] __libc_fork: parent thread stack corruption while looping through 'allp' for calling parent_handler
Date: Mon, 18 Nov 2019 10:43:00 -0000
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--- Comment #2 from Matthew Qvap <vibrysec at gmail dot com> ---
(In reply to Andreas Schwab from comment #1)
> The atfork handler handing has been refactored in version 2.28 (commit
> 27761a1042). Does the crash still happen?
it happened once (per thousands installations), the only thing I can look at is
core file from that event - this is what I based bug report.
would the things described above, be able to happen on code prior to 2.28
refactor (I mean did You see the stack looking simillar)?
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>From glibc-bugs-return-46643-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 13:29:06 2019
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From: "onuratacik at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug stdio/25203] New: Fatal error: glibc detected an invalid stdio handle
Date: Mon, 18 Nov 2019 13:29:00 -0000
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Bug ID: 25203
Summary: Fatal error: glibc detected an invalid stdio handle
Product: glibc
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Hello,
I have CentOS Linux release 7.7.1908 (Core)
and 2.17 glibc for x86_64 and i686
I got error which is Fatal error: glibc detected an invalid stdio handle when I
start my counter strike dedicated server and it doesnt start.
Can you help me and tell me what I need to do please?
Thank you,
Have a good work.
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>From glibc-bugs-return-46644-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 13:47:59 2019
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Subject: [Bug stdio/23313] libio vtables validation and standard file object interposition
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| |illa/show_bug.cgi?id=25203
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Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
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| |illa/show_bug.cgi?id=23313
Ever confirmed|0 |1
Flags| |security-
Severity|critical |normal
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
What is your exact glibc version? We fixed some incompatibilities in
glibc-2.17-292.el7. Upstream, the fix landed as the fix for bug 23313:
commit c402355dfa7807b8e0adb27c009135a7e2b9f1b0
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jun 26 10:24:52 2018 +0200
libio: Disable vtable validation in case of interposition [BZ #23313]
I have not been able to get access to the binaries you mentioned, so I don't
know if the fix applies to them as well.
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>From glibc-bugs-return-46646-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 13:48:43 2019
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Subject: [Bug stdio/23313] libio vtables validation and standard file object interposition
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>From glibc-bugs-return-46647-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 14:36:17 2019
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Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
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--- Comment #2 from onuratacik at gmail dot com ---
I use 2.17-292 and I dont know how to update glibc and disable vtable
validation.
Can you please help me?
Thank you,
Have a good work.
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>From glibc-bugs-return-46648-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Nov 18 14:39:35 2019
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Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
The expectation is that the fixed glibc disables the validation automatically
if it detects and old binary. There is no manual step involved. Apparently,
this is not working for your programs.
Are the program binaries you use publicly available from somewhere? Thanks.
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To: glibc-bugs@sourceware.org
Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
Date: Mon, 18 Nov 2019 17:16:00 -0000
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--- Comment #4 from onuratacik at gmail dot com ---
I used my counter strike 1.5 dedicated server for 10 years and I try to use
them on my centos 7 but server doesnt start.
What can I do?
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
Date: Mon, 18 Nov 2019 17:18:00 -0000
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to onuratacik from comment #4)
> I used my counter strike 1.5 dedicated server for 10 years and I try to use
> them on my centos 7 but server doesnt start.
>
> What can I do?
Are these programs publicly available? Thanks.
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Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
Date: Mon, 18 Nov 2019 17:25:00 -0000
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--- Comment #6 from onuratacik at gmail dot com ---
https://v5.steamlessproject.nl/index.php?page=stepbystepserver#linux
You can download same files with link.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/24867] Unintended malloc_info formatting changes
Date: Mon, 18 Nov 2019 17:58:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a0a551d2590c43635a45a494ea3b972c7b91e79f
commit a0a551d2590c43635a45a494ea3b972c7b91e79f
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 1 14:06:24 2019 +0200
malloc: Remove unwanted leading whitespace in malloc_info [BZ #24867]
It was introduced in commit 6c8dbf00f536d78b1937b5af6f57be47fd376344
("Reformat malloc to gnu style.").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
(cherry picked from commit b0f6679bcd738ea244a14acd879d974901e56c8e)
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Subject: [Bug libc/24532] conform/arpa/inet.h failures due to linux kernel 64-bit time_t changes
Date: Mon, 18 Nov 2019 17:59:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=845278f2c6f93b1bb72c1e61529785740ea05f62
commit 845278f2c6f93b1bb72c1e61529785740ea05f62
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jul 24 10:59:34 2019 +0200
Linux: Use in-tree copy of SO_ constants for !__USE_MISC [BZ #24532]
The kernel changes for a 64-bit time_t on 32-bit architectures
resulted in <asm/socket.h> indirectly including <linux/posix_types.h>.
The latter is not namespace-clean for the POSIX version of
<sys/socket.h>.
This issue has persisted across several Linux releases, so this commit
creates our own copy of the SO_* definitions for !__USE_MISC mode.
The new test socket/tst-socket-consts ensures that the copy is
consistent with the kernel definitions (which vary across
architectures). The test is tricky to get right because CPPFLAGS
includes include/libc-symbols.h, which in turn defines _GNU_SOURCE
unconditionally.
Tested with build-many-glibcs.py. I verified that a discrepancy in
the definitions actually results in a failure of the
socket/tst-socket-consts test.
(cherry picked from commit 7854ebf8ed18180189c335f6f499fe9322458f0b)
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
Date: Mon, 18 Nov 2019 17:59:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a683450f261d7e79abc543481f7f473abdb9b406
commit a683450f261d7e79abc543481f7f473abdb9b406
Author: DJ Delorie <dj@redhat.com>
Date: Wed Oct 30 18:03:14 2019 -0400
Base max_fast on alignment, not width, of bins (Bug 24903)
set_max_fast sets the "impossibly small" value based on,
eventually, MALLOC_ALIGNMENT. The comparisons for the smallest
chunk used is, eventually, MIN_CHUNK_SIZE. Note that i386
is the only platform where these are the same, so a smallest
chunk *would* be put in a no-fastbins fastbin.
This change calculates the "impossibly small" value
based on MIN_CHUNK_SIZE instead, so that we can know it will
always be impossibly small.
(cherry picked from commit ff12e0fb91b9072800f031cb21fb2651ee7b6251)
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Subject: [Bug malloc/24026] malloc_info() returns wrong numbers
Date: Mon, 18 Nov 2019 17:59:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c6e4c3198b0ec78a921bfc03874fca662c5e9599
commit c6e4c3198b0ec78a921bfc03874fca662c5e9599
Author: Niklas Hamb�chen <mail@nh2.me>
Date: Thu Aug 8 22:02:27 2019 +0200
malloc: Fix missing accounting of top chunk in malloc_info [BZ #24026]
Fixes `<total type="rest" size="..."> incorrectly showing as 0 most
of the time.
The rest value being wrong is significant because to compute the
actual amount of memory handed out via malloc, the user must subtract
it from <system type="current" size="...">. That result being wrong
makes investigating memory fragmentation issues like
<https://bugzilla.redhat.com/show_bug.cgi?id=843478> close to
impossible.
(cherry picked from commit b6d2c4475d5abc05dd009575b90556bdd3c78ad0)
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From: "koriakin at 0x04 dot net" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25204] New: LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries
Date: Tue, 19 Nov 2019 08:13:00 -0000
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Bug ID: 25204
Summary: LD_PREFER_MAP_32BIT_EXEC not ignored in setuid
binaries
Product: glibc
Version: unspecified
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Priority: P2
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The code using LD_PREFER_MAP_32BIT_EXEC is run before the code that removes
security-sensitive variables from the environment, thus the latter is
ineffective. This means a local attacker can effectively weaken ASLR strength
on setuid binaries.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries
Date: Tue, 19 Nov 2019 08:25:00 -0000
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--- Comment #1 from Marcin Kościelnicki <koriakin at 0x04 dot net> ---
Patch pending: https://sourceware.org/ml/libc-alpha/2019-11/msg00649.html
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>From glibc-bugs-return-46658-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 12:09:33 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries
Date: Tue, 19 Nov 2019 12:09:00 -0000
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CC| |fweimer at redhat dot com
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/24026] malloc_info() returns wrong numbers
Date: Tue, 19 Nov 2019 12:12:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5f620768fbdae75f71af78852be228ad5577623d
commit 5f620768fbdae75f71af78852be228ad5577623d
Author: Niklas Hamb�chen <mail@nh2.me>
Date: Thu Aug 8 22:02:27 2019 +0200
malloc: Fix missing accounting of top chunk in malloc_info [BZ #24026]
Fixes `<total type="rest" size="..."> incorrectly showing as 0 most
of the time.
The rest value being wrong is significant because to compute the
actual amount of memory handed out via malloc, the user must subtract
it from <system type="current" size="...">. That result being wrong
makes investigating memory fragmentation issues like
<https://bugzilla.redhat.com/show_bug.cgi?id=843478> close to
impossible.
(cherry picked from commit b6d2c4475d5abc05dd009575b90556bdd3c78ad0)
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To: glibc-bugs@sourceware.org
Subject: [Bug malloc/24903] malloc/tst-mxfast fails on i386
Date: Tue, 19 Nov 2019 12:13:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Arjun Shankar
<arjun@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=919af705eef416f4469341dfdf4ca23450f30236
commit 919af705eef416f4469341dfdf4ca23450f30236
Author: DJ Delorie <dj@redhat.com>
Date: Wed Oct 30 18:03:14 2019 -0400
Base max_fast on alignment, not width, of bins (Bug 24903)
set_max_fast sets the "impossibly small" value based on,
eventually, MALLOC_ALIGNMENT. The comparisons for the smallest
chunk used is, eventually, MIN_CHUNK_SIZE. Note that i386
is the only platform where these are the same, so a smallest
chunk *would* be put in a no-fastbins fastbin.
This change calculates the "impossibly small" value
based on MIN_CHUNK_SIZE instead, so that we can know it will
always be impossibly small.
(cherry picked from commit ff12e0fb91b9072800f031cb21fb2651ee7b6251)
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>From glibc-bugs-return-46661-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 13:26:19 2019
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From: "emilio at crisal dot io" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Tue, 19 Nov 2019 13:26:00 -0000
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--- Comment #2 from Emilio Cobos Álvarez (:emilio) <emilio at crisal dot io> ---
Let me know if I've missed any part of the procedure to get the patch in.
Looking at https://sourceware.org/glibc/wiki/Contribution%20checklist I think
the only bits that I don't know if I followed properly are:
* Copyright assignment stuff (I don't know what to do there, but the patch
seems trivial enough to not be "legally significant").
* Changelog (though I see a bunch of patches being posted without changelog
updates).
Also I see that some changes in the mailing list are being sent via gerrit. Not
sure where the docs for that are, if any, but I'm happy to give that a shot as
well if needed.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Tue, 19 Nov 2019 13:38:00 -0000
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Sorry, you didn't do anything wrong. I looked at the patch and was just
disappointed that it makes ugly source code even uglier.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries
Date: Tue, 19 Nov 2019 13:39:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1774021
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>From glibc-bugs-return-46664-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 13:42:51 2019
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-11-19
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Ever confirmed|0 |1
Flags| |security+
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
I think we should treat this as a security vulnerability because it is quite a
significant regression for a system built with PIE-by-default (and slightly
older binutils).
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/25206] New: strcoll sort result incorrect locale lv_LV.UTF-8
Date: Tue, 19 Nov 2019 14:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25206
Bug ID: 25206
Summary: strcoll sort result incorrect locale lv_LV.UTF-8
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: localedata
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
CC: libc-locales at sourceware dot org
Target Milestone: ---
Created attachment 12082
--> https://sourceware.org/bugzilla/attachment.cgi?id=12082&action=edit
lv_LV.UTF-8.in_sorted
In the downstream bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=1696729
The claim is made that lv_LV sorting is incorrect.
I have suggested that the following be sorted correctly:
https://sourceware.org/git/?p=glibc.git;a=blob;f=localedata/lv_LV.UTF-8.in;h=db7e83c77e83183ee88eb9769f82a66c4cb758ab;hb=HEAD
Then we can use this as a reference for discussion.
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Subject: [Bug localedata/25206] strcoll sort result incorrect locale lv_LV.UTF-8
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Created attachment 12083
--> https://sourceware.org/bugzilla/attachment.cgi?id=12083&action=edit
lv_LV.UTF-8_with_more_chars_and_removed.in
Additional sorted file.
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>From glibc-bugs-return-46667-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 14:14:39 2019
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Subject: [Bug localedata/25206] strcoll sort result incorrect locale lv_LV.UTF-8
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1696729
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>From glibc-bugs-return-46668-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 14:33:16 2019
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From: "emilio at crisal dot io" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Tue, 19 Nov 2019 14:33:00 -0000
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--- Comment #4 from Emilio Cobos Álvarez (:emilio) <emilio at crisal dot io> ---
Yeah, I agree with that sentiment :/
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>From glibc-bugs-return-46669-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 15:50:25 2019
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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Tim Rühsen <tim.ruehsen at gmx dot de> changed:
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--- Comment #3 from Tim Rühsen <tim.ruehsen at gmx dot de> ---
A quick helper to find thread-unsafe functions can be found via
https://blog.josefsson.org/2009/06/23/thread-safe-functions/
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>From glibc-bugs-return-46670-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 16:01:59 2019
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Subject: [Bug locale/25115] Guard against divide by zero with corrupted locale archives
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| |/show_bug.cgi?id=1470124
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>From glibc-bugs-return-46671-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 16:16:03 2019
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
That script is cool but it has:
UNSAFE="$UNSAFE dirname"
while the libc info page says
-- Function: char * dirname (char *PATH)
Preliminary: | MT-Safe | AS-Safe | AC-Safe | *Note POSIX Safety
Concepts::.
It sure would be handy if this posix safety metadata were
available in some reusable form.
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>From glibc-bugs-return-46672-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Nov 19 16:20:55 2019
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
The glibc manual annotations are not useful for use in a tool because they are
based on the implementation, not the intended properties of the interface.
There is also an unresolved ambiguity regarding what thread safety means for
function that updates objects whose address has been passed as parameters. In
the past, some of functions which only operate on their arguments have been
considered as not thread-safe. I don't think this particular approach to thread
safety is useful.
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From: "emilio at crisal dot io" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Tue, 19 Nov 2019 16:58:00 -0000
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--- Comment #5 from Emilio Cobos Álvarez (:emilio) <emilio at crisal dot io> ---
(though to be clear, I still think it should be landed as otherwise icecc /
sccache users can't use clang, or get unscrutable build errors)
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
Date: Tue, 19 Nov 2019 17:18:00 -0000
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--- Comment #6 from Tim Rühsen <tim.ruehsen at gmx dot de> ---
Surely does it help, but needs some changes to not spill out too many false
positives. Just found using strerror() and getenv() in libwget (supposed to be
reentrant) library code.
It can also be extended to use ldd + nm to check linked dependencies.
But anyways, as I said, a helper for the short term.
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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----------------------------------------------------------------------------
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--- Comment #7 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #5)
> The glibc manual annotations are not useful for use in a tool because they
> are based on the implementation, not the intended properties of the
> interface.
At the time we wrote the annotations we wrote down what the implementation did,
and knew that this wasn't exactly what we wanted, but consensus around exactly
what we should do was not yet clear.
Thus the annotations are marked "Preliminary."
> There is also an unresolved ambiguity regarding what thread safety means for
> function that updates objects whose address has been passed as parameters.
Can you give an exmaple of such a function? Are we talking about APIs like
strtok?
> In the past, some of functions which only operate on their arguments have
> been considered as not thread-safe. I don't think this particular approach
> to thread safety is useful.
Could you expand on this please?
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Carlos O'Donell from comment #7)
>> There is also an unresolved ambiguity regarding what thread safety means for
>> function that updates objects whose address has been passed as parameters.
>
> Can you give an exmaple of such a function? Are we talking about APIs like
> strtok?
I think “MT-Safe race:obstack-ptr” is such an example.
>> In the past, some of functions which only operate on their arguments have
>> been considered as not thread-safe. I don't think this particular approach
>> to thread safety is useful.
>
> Could you expand on this please?
readdir vs readdir_r is the canonical example where things went really, really
wrong.
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Subject: [Bug nptl/25158] warning when using non-thread-safe functions
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--- Comment #9 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #8)
> (In reply to Carlos O'Donell from comment #7)
> >> There is also an unresolved ambiguity regarding what thread safety means for
> >> function that updates objects whose address has been passed as parameters.
> >
> > Can you give an exmaple of such a function? Are we talking about APIs like
> > strtok?
>
> I think “MT-Safe race:obstack-ptr” is such an example.
Perfect. Good example. Where do you see the ambiguity?
Have you had a chance to read all of `info libc 'Conditionally Safe Features'`?
Particularly the "race" section?
Quoting from the manual:
~~~
As for objects that are opaque or opaque-like, in that they are to
be manipulated only by passing them to library functions (e.g.,
‘FILE’, ‘DIR’, ‘obstack’, ‘iconv_t’), there might be additional
expectations as to internal coordination of access by the library.
We will annotate, with ‘race’ followed by a colon and the argument
name, functions that take such objects but that do not take care of
synchronizing access to them by default. For example, ‘FILE’
stream ‘unlocked’ functions will be annotated, but those that
perform implicit locking on ‘FILE’ streams by default will not,
even though the implicit locking may be disabled on a per-stream
basis.
~~~
obstack is not synchronized so we add race:obstack-ptr.
To some degree this is a concession to the legacy obstack ABI since it doesn't,
AFAIK, have room to add a local mutex for protection (the type is exposed
directly to users in obstack.h and is ABI).
However, in some cases there isn't an object to use. Consider two memcpy's from
two different threads to the same memory. memcpy is *always* MT-safe, and the
pointer to pointed memory cannot be meaningfully synchronized.
If we had a lock in obstack then we could just mark it MT-safe with no
notation.
In summary
- obstack is MT-safe so long as you avoid data races with the objects in
question, or following the POSIX model you synchronize memory accesses.
> >> In the past, some of functions which only operate on their arguments have
> >> been considered as not thread-safe. I don't think this particular approach
> >> to thread safety is useful.
> >
> > Could you expand on this please?
>
> readdir vs readdir_r is the canonical example where things went really,
> really wrong.
My opinion is that this is simply historical baggage and POSIX calls this out:
https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xsh_chap02.html#tag_22_02_09_09
~~~
Early proposals had provided "_r" versions for functions that returned pointers
to variable-size buffers without providing a means for determining the required
buffer size. This would have made using such functions exceedingly clumsy,
potentially requiring iteratively calling them with increasingly larger guesses
for the amount of storage required. Hence, sysconf() variables have been
provided for such functions that return the maximum required buffer size.
~~~
This still isn't a great design. They call out later in that text that you
should explicitly provide size information.
So POSIX added readdir_r, got the design wrong, and then we deprecated it.
Today readdir has internal locking, but the returned memory still comes from
the DIR's buffer, so there is still synchronization issues accessing the
returned data.
You could say "memory synchronization" covers this:
https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap04.html#tag_04_12
~~~
Applications shall ensure that access to any memory location by more than one
thread of control (threads or processes) is restricted such that no thread of
control can read or modify a memory location while another thread of control
may be modifying it. Such access is restricted using functions that synchronize
thread execution and also synchronize memory with respect to other threads.
~~~
In this case we know by the definition of the interface for readdir that we
can't have multiple threads use the results of readdir without creating a data
race.
See also:
"A.4.12 Memory Synchronization"
https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xbd_chap04.html
The glibc manual doesn't say "MT-safe race:dirstream" because there is library
synchronization provided. We do this even though the results returned to the
other thread _may_ be inconsistent at this point, but that's a memory
synchronization issue with the result of the function.
In summary
- readdir is MT-safe because POSIX says it shoudl be and we use locking.
- the results of readdir require memory synchronization to access otherwise you
get a data race
- readdir_r is unsafe for many other historical reasons and so is deprecated.
We should probably continue this discussion on libc-alpha.
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Wed, 20 Nov 2019 08:38:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|LD_PREFER_MAP_32BIT_EXEC |LD_PREFER_MAP_32BIT_EXEC
|not ignored in setuid |not ignored in setuid
|binaries |binaries (CVE-2019-19126)
Alias| |CVE-2019-19126
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>From glibc-bugs-return-46679-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 20 09:38:50 2019
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From: "whzhe51 at 126 dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nscd/25208] New: the new cache cannot be updated when the daemons are started again
Date: Wed, 20 Nov 2019 09:38:00 -0000
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Bug ID: 25208
Summary: the new cache cannot be updated when the daemons are
started again
Product: glibc
Version: 2.28
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when i stop the daemons, i add the group test1 and add test to this group.
[root@localhost whzhe]# id test
uid=1000(test) gid=1000(test) groups=1000(test),1004(test1)
Now i start up the nscd daemons and also check the id test.
[root@localhost whzhe]# id test
uid=1000(test) gid=1000(test) groups=1000(test)
There is no group test1.And i know i can using 'nscd -i group' to delete the
cache.
But i think when i restart up the nscd daemons, the nscd daemons need to update
the cache and fix this problem.
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Subject: [Bug locale/21302] strcoll does not correctly follow locale-specified order in some cases
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nscd/25208] the new cache cannot be updated when the daemons are started again
Date: Wed, 20 Nov 2019 14:30:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to whzhe from comment #0)
> when i stop the daemons, i add the group test1 and add test to this group.
>
> [root@localhost whzhe]# id test
> uid=1000(test) gid=1000(test) groups=1000(test),1004(test1)
>
> Now i start up the nscd daemons and also check the id test.
>
> [root@localhost whzhe]# id test
> uid=1000(test) gid=1000(test) groups=1000(test)
>
> There is no group test1.And i know i can using 'nscd -i group' to delete the
> cache.
> But i think when i restart up the nscd daemons, the nscd daemons need to
> update the cache and fix this problem.
They should have. There is code to add the caches and invlidate them at startup
if their last modified date has changed.
What version of glibc is this? Which distribution?
Could you please start nscd with debug level set to 9? And provide the logs.
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>From glibc-bugs-return-46682-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 20 16:43:51 2019
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Wed, 20 Nov 2019 16:43:00 -0000
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Introduced in glibc 2.23:
commit b9eb92ab05204df772eb4929eccd018637c9f3e9
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Oct 21 14:44:23 2015 -0700
Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT
According to Silvermont software optimization guide, for 64-bit
applications, branch prediction performance can be negatively impacted
when the target of a branch is more than 4GB away from the branch. Add
the Prefer_MAP_32BIT_EXEC bit so that mmap will try to map executable
pages with MAP_32BIT first. NB: MAP_32BIT will map to lower 2GB, not
lower 4GB, address. Prefer_MAP_32BIT_EXEC reduces bits available for
address space layout randomization (ASLR), which is always disabled for
SUID programs and can only be enabled by setting environment variable,
LD_PREFER_MAP_32BIT_EXEC.
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>From glibc-bugs-return-46683-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 20 21:24:41 2019
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Subject: [Bug stdio/25203] Fatal error: glibc detected an invalid stdio handle
Date: Wed, 20 Nov 2019 21:24:00 -0000
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--- Comment #7 from onuratacik at gmail dot com ---
I hope you are looking fix for me! I will be really happy.
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>From glibc-bugs-return-46684-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Nov 20 23:23:06 2019
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Wed, 20 Nov 2019 23:23:00 -0000
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--- Comment #4 from Marcin Kościelnicki <koriakin at 0x04 dot net> ---
Patch v2: https://sourceware.org/ml/libc-alpha/2019-11/msg00698.html
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>From glibc-bugs-return-46685-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 02:24:40 2019
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From: "whzhe51 at 126 dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug nscd/25208] the new cache cannot be updated when the daemons are started again
Date: Thu, 21 Nov 2019 02:24:00 -0000
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--- Comment #2 from whzhe <whzhe51 at 126 dot com> ---
(In reply to Carlos O'Donell from comment #1)
> (In reply to whzhe from comment #0)
> > when i stop the daemons, i add the group test1 and add test to this group.
> >
> > [root@localhost whzhe]# id test
> > uid=1000(test) gid=1000(test) groups=1000(test),1004(test1)
> >
> > Now i start up the nscd daemons and also check the id test.
> >
> > [root@localhost whzhe]# id test
> > uid=1000(test) gid=1000(test) groups=1000(test)
> >
> > There is no group test1.And i know i can using 'nscd -i group' to delete the
> > cache.
> > But i think when i restart up the nscd daemons, the nscd daemons need to
> > update the cache and fix this problem.
>
> They should have. There is code to add the caches and invlidate them at
> startup if their last modified date has changed.
>
> What version of glibc is this? Which distribution?
>
> Could you please start nscd with debug level set to 9? And provide the logs.
Glibc version is glibc-2.28-9.And i set the debug-level to 9, the log follows
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file /etc/passwd for
database passwd
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file `/etc/passwd` (1)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring directory `/etc` (2)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file /etc/group for
database group
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file `/etc/group` (3)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring directory `/etc` (2)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file /etc/hosts for
database hosts
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file `/etc/hosts` (4)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring directory `/etc` (2)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file /etc/resolv.conf for
database hosts
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file `/etc/resolv.conf`
(5)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring directory `/etc` (2)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file /etc/services for
database services
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file `/etc/services` (6)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring directory `/etc` (2)
Wed 20 Nov 2019 08:33:31 PM EST - 111349: monitoring file /etc/netgroup for
database netgroup
Wed 20 Nov 2019 08:33:31 PM EST - 111349: disabled inotify-based monitoring for
file `/etc/netgroup': No such file or directory
Wed 20 Nov 2019 08:33:31 PM EST - 111349: stat failed for file `/etc/netgroup';
will try again later: No such file or directory
Wed 20 Nov 2019 08:33:31 PM EST - 111349: Access Vector Cache (AVC) started
Wed 20 Nov 2019 08:33:31 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111361
Wed 20 Nov 2019 08:33:31 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:31 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:31 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111363
Wed 20 Nov 2019 08:33:31 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:31 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:31 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111365
Wed 20 Nov 2019 08:33:31 PM EST - 111349: GETFDGR
Wed 20 Nov 2019 08:33:31 PM EST - 111349: provide access to FD 9, for group
Wed 20 Nov 2019 08:33:31 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111374
Wed 20 Nov 2019 08:33:31 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:31 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:31 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111385
Wed 20 Nov 2019 08:33:31 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:31 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:31 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111385
Wed 20 Nov 2019 08:33:31 PM EST - 111349: GETFDGR
Wed 20 Nov 2019 08:33:31 PM EST - 111349: provide access to FD 9, for group
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111393
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111399
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111405
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111411
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111422
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111422
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDGR
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 9, for group
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111428
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:34 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111428
Wed 20 Nov 2019 08:33:34 PM EST - 111349: GETFDGR
Wed 20 Nov 2019 08:33:34 PM EST - 111349: provide access to FD 9, for group
Wed 20 Nov 2019 08:33:36 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:36 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111455
Wed 20 Nov 2019 08:33:36 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:36 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:36 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111458
Wed 20 Nov 2019 08:33:36 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:36 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:36 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111461
Wed 20 Nov 2019 08:33:36 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:36 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:36 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111464
Wed 20 Nov 2019 08:33:36 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:36 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:36 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111467
Wed 20 Nov 2019 08:33:36 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:36 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:37 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111471
Wed 20 Nov 2019 08:33:37 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:37 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:37 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111477
Wed 20 Nov 2019 08:33:37 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:37 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:37 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111491
Wed 20 Nov 2019 08:33:37 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:37 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:37 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111497
Wed 20 Nov 2019 08:33:37 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:37 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:37 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111508
Wed 20 Nov 2019 08:33:37 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:37 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:37 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111508
Wed 20 Nov 2019 08:33:37 PM EST - 111349: GETFDGR
Wed 20 Nov 2019 08:33:37 PM EST - 111349: provide access to FD 9, for group
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111524
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111530
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111533
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111540
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111546
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111557
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:40 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111557
Wed 20 Nov 2019 08:33:40 PM EST - 111349: GETFDGR
Wed 20 Nov 2019 08:33:40 PM EST - 111349: provide access to FD 9, for group
Wed 20 Nov 2019 08:33:41 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111572
Wed 20 Nov 2019 08:33:41 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:41 PM EST - 111349: provide access to FD 7, for passwd
Wed 20 Nov 2019 08:33:42 PM EST - 111349: handle_request: request received
(Version = 2) from PID 111593
Wed 20 Nov 2019 08:33:42 PM EST - 111349: GETFDPW
Wed 20 Nov 2019 08:33:42 PM EST - 111349: provide access to FD 7, for passwd
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>From glibc-bugs-return-46686-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 02:58:25 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/24963] fclose should lock stream first to synchronize with funlockfile
Date: Thu, 21 Nov 2019 02:58:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|deadlock between freopen |fclose should lock stream
|and fclose |first to synchronize with
| |funlockfile
--- Comment #16 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Andreas Schwab from comment #14)
> That's a good point. In that case unlinking before locking is not valid, I
> think. The comparison with free does not fit here, because you cannot lock
> memory blocks.
To be clear this bug is reopened because fclose *should* take the lock early to
wait for any other funlockfile to complete before it does any other work?
So while the original reason for this bug is invalid, we have another reason to
keep it around.
I've adjusted the title. Please correct this if I misunderstood.
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>From glibc-bugs-return-46687-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 04:31:14 2019
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug locale/25195] localedef does not return error status when warnings were issued.
Date: Thu, 21 Nov 2019 04:31:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Sergei Trofimovich from comment #4)
> # /usr/bin/localedef -c --no-archive -i en_US -f 'ISO-8859-1-whee' -A
> /usr/share/locale/locale.alias --prefix / en_US; echo $?
> failed to set locale!
> [error] character map file `ISO-8859-1-whee' not found: No such file or
> directory
> 0
Thanks, that helped!
cd $HOME
mkdir -p usr/lib/locale/en_US
/usr/bin/localedef -c --no-archive -i en_US \
-f 'ISO-8859-1-whee' -A /usr/share/locale/locale.alias \
--prefix $HOME en_US
[error] character map file `ISO-8859-1-whee' not found: No such file or
directory
echo $?
0
Reproduced.
This is the expected behaviour. Sorry I didn't notice the "-c" originally.
(a) You specified "-c" on the command line which means "--force" and so
regardless of errors the output is written.
(b) If output is written then an error code of 4 cannot be returned. That would
violate the POSIX specification e.g. exit code of >= 3 means warnings or errors
occurred and _no output_ was generated.
By using "-c" you are basically saying "ignore errors, and force the output"
and so the output is generated regardless of the error and that operation as
you requested was successful.
Removing "-c" avoids output and returns error code 4.
/usr/bin/localedef --no-archive -i en_US \
-f 'ISO-8859-1-whee' -A /usr/share/locale/locale.alias \
--prefix $HOME en_US
[error] character map file `ISO-8859-1-whee' not found: No such file or
directory
[error] no output file produced because errors were issued
echo $?
4
I'm marking this RESOLVED/INVALID.
Please reopen if you have any more questions.
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>From glibc-bugs-return-46688-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 07:28:03 2019
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Subject: [Bug locale/25195] localedef does not return error status when warnings were issued.
Date: Thu, 21 Nov 2019 07:28:00 -0000
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--- Comment #6 from Sergei Trofimovich <slyfox at inbox dot ru> ---
Oh, thank you! We'll try to drop -c.
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>From glibc-bugs-return-46689-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 12:19:41 2019
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Thu, 21 Nov 2019 12:19:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=d5dfad4326fc683c813df1e37bbf5cf920591c8e
commit d5dfad4326fc683c813df1e37bbf5cf920591c8e
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
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>From glibc-bugs-return-46690-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 12:26:43 2019
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.31.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Thu, 21 Nov 2019 12:43:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2019-11-21
See Also| |https://bugs.llvm.org/show_
| |bug.cgi?id=37990
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Ever confirmed|0 |1
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>From glibc-bugs-return-46692-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 16:57:24 2019
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Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bfa864e1645e140da2e1aae3cf0d0ba0674f6eb5
commit bfa864e1645e140da2e1aae3cf0d0ba0674f6eb5
Author: Emilio Cobos �lvarez <emilio@crisal.io>
Date: Tue Nov 12 19:18:32 2019 +0100
Don't use a custom wrapper macro around __has_include (bug 25189).
This causes issues when using clang with -frewrite-includes to e.g.,
submit the translation unit to a distributed compiler.
In my case, I was building Firefox using sccache.
See [1] for a reduced test-case since I initially thought this was a
clang bug, and [2] for more context.
Apparently doing this is invalid C++ per [cpp.cond], which mentions [3]:
> The #ifdef and #ifndef directives, and the defined conditional
> inclusion operator, shall treat __has_include and __has_cpp_attribute
> as if they were the names of defined macros. The identifiers
> __has_include and __has_cpp_attribute shall not appear in any context
> not mentioned in this subclause.
[1]: https://bugs.llvm.org/show_bug.cgi?id=43982
[2]: https://bugs.llvm.org/show_bug.cgi?id=37990
[3]: http://eel.is/c++draft/cpp.cond#7.sentence-2
Change-Id: Id4b8ee19176a9e4624b533087ba870c418f27e60
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Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
Date: Thu, 21 Nov 2019 16:59:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #7 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in glibc 2.31.
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>From glibc-bugs-return-46695-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Nov 21 17:01:44 2019
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From: "rschiron at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Thu, 21 Nov 2019 17:01:00 -0000
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rschiron at redhat dot com changed:
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CC| |rschiron at redhat dot com
--- Comment #7 from rschiron at redhat dot com ---
I believe this should be treated as a security hardening the same as other
similar issues with weak ASLR have been treated (e.g.
https://sourceware.org/bugzilla/show_bug.cgi?id=22852 ,
https://sourceware.org/bugzilla/show_bug.cgi?id=22853#c3 ).
I do see how this is easier to trigger and more common in setuid binaries than
the other similar flaws, but it still requires another unrelated vulnerability
to be of any use and ASLR is a post-exploitation mitigation.
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Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
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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=1775294
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>From glibc-bugs-return-46696-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 01:21:50 2019
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From: "travis.downs at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25214] New: ctype.h performance (and potentially behavior) depends on include order
Date: Fri, 22 Nov 2019 01:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25214
Bug ID: 25214
Summary: ctype.h performance (and potentially behavior) depends
on include order
Product: glibc
Version: 2.27
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Priority: P2
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At least one some versions of libc, whether you include <stdlib.> before or
after <ctype.h> changes the way the toupper and tolower functions are defined.
See for example here:
https://godbolt.org/z/4a7htx
If you include the <ctype.h> header first, the bodies of extern inline
functions are exposed in the header, and are inlined (note the loop contains no
toupper call). If you swap the order, and include <stdlib.h> first, then
__NO_CTYPE gets defined somewhere in the header chain, and when <ctype.h> is
included the inline bodies are not available, and so inlining doesn't happen.
See the block guarded by __NO_CTYPE in ctype.h at:
https://sourceware.org/git/?p=glibc.git;a=blob;f=ctype/ctype.h;h=d17f727cf0dc2a0f6c62fa50aff799b175dcb426;hb=2a764c6ee848dfe92cb2921ed3b14085f15d9e79#l205
At least this causes a large performance variation (I measure the non-inlined
version as 3 to 4 times slower), but if you pick through that conditionally
defined block I bet you can find functional differences too.
I would expect __NO_CTYPE to defined consistently regardless of header include
order.
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>From glibc-bugs-return-46697-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 01:43:45 2019
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Subject: [Bug libc/25214] ctype.h performance (and potentially behavior) depends on include order
Date: Fri, 22 Nov 2019 01:43:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Are you compiling as C++? Some libstdc++ headers define __NO_CTYPE
(because C++ prohibits headers from defining standard functions as
macros), but I don't see anything in the glibc headers defining that
macro.
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>From glibc-bugs-return-46698-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 01:47:03 2019
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From: "travis.downs at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25214] ctype.h performance (and potentially behavior) depends on include order
Date: Fri, 22 Nov 2019 01:47:00 -0000
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--- Comment #2 from Travis Downs <travis.downs at gmail dot com> ---
Yes, I'm compiling as C++, and I should have made that clear from the start.
In C, the flow is totally different and toupper/tolower are macros, not
functions (as you pointed out).
Although I'm compiling as C++, the only headers I'm including are <stdlib.h>
and <ctype.h>. I'm not sure exactly where __NO_CTYPE is getting defined in this
case, but in another case I looked at (this time including C++ headers like
<algorithm>, the __NO_CTYPE definition came from <bits/os_defines.h>).
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>From glibc-bugs-return-46699-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 01:49:47 2019
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From: "travis.downs at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25214] ctype.h performance (and potentially behavior) depends on include order
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--- Comment #3 from Travis Downs <travis.downs at gmail dot com> ---
Here's an example that shows that <stdlib.h> defines __NO_CTYPE when compiled
in C++:
https://godbolt.org/z/y6Quxs
In C it is not defined.
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>From glibc-bugs-return-46700-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 06:33:01 2019
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From: "helugang at huawei dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
Date: Fri, 22 Nov 2019 06:33:00 -0000
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--- Comment #2 from helugang <helugang at huawei dot com> ---
(In reply to Gunnar Hjalmarsson from comment #1)
> I changed the component by mistake and then changed back. Sorry for the
> noise.
Hi,Gunnar
It's no matter,by the way did you know who can help us about this performance
issue?
Thank you!
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>From glibc-bugs-return-46701-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 09:08:16 2019
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Subject: [Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
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Gunnar Hjalmarsson <gunnarhj at ubuntu dot com> changed:
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CC| |gunnarhj at ubuntu dot com
--- Comment #3 from Gunnar Hjalmarsson <gunnarhj at ubuntu dot com> ---
No, I don't. Sooner or later a maintainer will probably attend to it, that's
all I can say.
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Subject: [Bug string/25131] memcpy perfomance problem with ARM 32 A9be due to high cache-misses
Date: Fri, 22 Nov 2019 09:26:00 -0000
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helugang <helugang at huawei dot com> changed:
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Keywords| |glibc_2.27, performance
--- Comment #4 from helugang <helugang at huawei dot com> ---
OK,anyway,thank you! we will wait.
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
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Florian Weimer <fweimer at redhat dot com> changed:
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|/show_bug.cgi?id=1774021 |
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From: "emilio at crisal dot io" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
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--- Comment #8 from Emilio Cobos Álvarez (:emilio) <emilio at crisal dot io> ---
Thanks Florian!
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=37c90e117310728a4ad1eb998c0bbe7d79c4a398
commit 37c90e117310728a4ad1eb998c0bbe7d79c4a398
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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Subject: [Bug libc/25189] glibc's __glibc_has_include causes issues with clang -frewrite-includes
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a4b3bbf71e8a608ac6ee4f423b5e2db50e06b846
commit a4b3bbf71e8a608ac6ee4f423b5e2db50e06b846
Author: Emilio Cobos �lvarez <emilio@crisal.io>
Date: Tue Nov 12 19:18:32 2019 +0100
Don't use a custom wrapper macro around __has_include (bug 25189).
This causes issues when using clang with -frewrite-includes to e.g.,
submit the translation unit to a distributed compiler.
In my case, I was building Firefox using sccache.
See [1] for a reduced test-case since I initially thought this was a
clang bug, and [2] for more context.
Apparently doing this is invalid C++ per [cpp.cond], which mentions [3]:
> The #ifdef and #ifndef directives, and the defined conditional
> inclusion operator, shall treat __has_include and __has_cpp_attribute
> as if they were the names of defined macros. The identifiers
> __has_include and __has_cpp_attribute shall not appear in any context
> not mentioned in this subclause.
[1]: https://bugs.llvm.org/show_bug.cgi?id=43982
[2]: https://bugs.llvm.org/show_bug.cgi?id=37990
[3]: http://eel.is/c++draft/cpp.cond#7.sentence-2
Change-Id: Id4b8ee19176a9e4624b533087ba870c418f27e60
(cherry picked from commit bfa864e1645e140da2e1aae3cf0d0ba0674f6eb5)
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Fri, 22 Nov 2019 12:35:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.29/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2626b15e88e00b5e9c8cc3962cf4768a5344f07a
commit 2626b15e88e00b5e9c8cc3962cf4768a5344f07a
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
Change-Id: Ib782573b4623ee3edfa9f98ad62f69b9d8edcb27
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.28/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=7966ce07e89fa4ccc8fdba00d4439fc652862462
commit 7966ce07e89fa4ccc8fdba00d4439fc652862462
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Fri, 22 Nov 2019 13:01:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.27/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4d5cfeb510125345cb41431afc9022492994cffa
commit 4d5cfeb510125345cb41431afc9022492994cffa
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Fri, 22 Nov 2019 13:04:00 -0000
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.26/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bc42e3bd44e7e9f616162d4550f1d35e04bddb5b
commit bc42e3bd44e7e9f616162d4550f1d35e04bddb5b
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Fri, 22 Nov 2019 13:15:00 -0000
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--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.25/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e73ac9ce9098d36699231b435168a0a904500ed9
commit e73ac9ce9098d36699231b435168a0a904500ed9
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Fri, 22 Nov 2019 13:28:00 -0000
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--- Comment #15 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.23/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b039fd85db0717aca309b61925d00a5a6547a649
commit b039fd85db0717aca309b61925d00a5a6547a649
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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Subject: [Bug dynamic-link/25204] LD_PREFER_MAP_32BIT_EXEC not ignored in setuid binaries (CVE-2019-19126)
Date: Fri, 22 Nov 2019 13:28:00 -0000
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--- Comment #14 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.24/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a7b9e4cb8ec069a4030b081ed7c40a65e0825f47
commit a7b9e4cb8ec069a4030b081ed7c40a65e0825f47
Author: Marcin Kościelnicki <mwk@0x04.net>
Date: Thu Nov 21 00:20:15 2019 +0100
rtld: Check __libc_enable_secure before honoring LD_PREFER_MAP_32BIT_EXEC
(CVE-2019-19126) [BZ #25204]
The problem was introduced in glibc 2.23, in commit
b9eb92ab05204df772eb4929eccd018637c9f3e9
("Add Prefer_MAP_32BIT_EXEC to map executable pages with MAP_32BIT").
(cherry picked from commit d5dfad4326fc683c813df1e37bbf5cf920591c8e)
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug stdio/25203] Disable libio vtable validation for interposed pre-2.1 stdio handles
Date: Fri, 22 Nov 2019 21:52:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |ASSIGNED
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=20191
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Summary|Fatal error: glibc detected |Disable libio vtable
|an invalid stdio handle |validation for interposed
| |pre-2.1 stdio handles
--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
The issue affects certain binaries (mostly written in C++) linked against glibc
versions before 2.1. I posted a patch:
libio: Disable vtable validation for pre-2.1 interposed handles [BZ #25203]
https://gnutoolchain-gerrit.osci.io/r/c/glibc/+/699
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Subject: [Bug stdio/25203] Disable libio vtable validation for interposed pre-2.1 stdio handles
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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=1775816,
| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1775819
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Subject: [Bug stdio/20191] libio: vtables hardening
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https://sourceware.org/bugzilla/show_bug.cgi?id=20191
Florian Weimer <fweimer at redhat dot com> changed:
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| |illa/show_bug.cgi?id=25203
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>From glibc-bugs-return-46717-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Nov 22 23:29:46 2019
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From: "msebor at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25219] New: improve out-of-bounds checking with GCC 10 attribute access
Date: Fri, 22 Nov 2019 23:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25219
Bug ID: 25219
Summary: improve out-of-bounds checking with GCC 10 attribute
access
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: msebor at gmail dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
To help detect out-of-bounds accesses by third party functions, GCC 10 provides
a new function attribute called access. It associates pointer parameters with
size parameters in function declarations so that actual arguments can be
checked in calls to the functions to determine if they are in bounds. Those
that are not are diagnosed by GCC without changing the code (so unlike
_FORTIFY_SOURCE it doesn't abort at runtime).
GCC has had the ability for some time to detect these invalid accesses by
built-in functions and Glibc already has a mechanism to detect a subset of
buffer overflows by functions it defines and that GCC doesn't recognize as
built-ins. But by relying on __builtin_object_size, the Glibc solution is
limited to constant sizes and offsets. The detection enabled by the new
attribute doesn't have this limitation.
Making use of the new attribute in Glibc's APIs will significantly improve
GCC's ability to detect buffer overflows and other bugs in ordinary functions
(non-built-ins) defined by Glibc. I have annotated a few of these functions
with the attribute as a proof of concept to see how this might look in
practice. For instance, compiling the following example with GCC 10 and
unmodified Glibc and -D_FORTIFY_SOURCE=2 only the buffer overflow in function f
is diagnosed:
#include <string.h>
#include <unistd.h>
char a[32];
void f (int i)
{
if (i < 27)
return;
strcpy (a + i, "123456");
}
int g (int fd, int i)
{
if (i < 27)
return -1;
return read (fd, a + i, sizeof a);
}
In file included from ../include/bits/string_fortified.h:1,
from ../string/string.h:494,
from ../include/string.h:60,
from /build/tmp/t.c:1:
In function ‘strcpy’,
inlined from ‘f’ at /build/tmp/t.c:11:3:
../string/bits/string_fortified.h:90:10: warning: ‘__builtin_memcpy’ forming
offset [32, 33] is out of the bounds [0, 32] of object ‘a’ with type ‘char[32]’
[-Warray-bounds]
90 | return __builtin___strcpy_chk (__dest, __src, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/build/tmp/t.c: In function ‘f’:
/build/tmp/t.c:4:6: note: ‘a’ declared here
4 | char a[32];
| ^
Applying the patch below lets the overflow in function g() also be diagnosed:
In function ‘read’,
inlined from ‘g’ at /build/tmp/t.c:19:10:
../posix/bits/unistd.h:45:10: warning: ‘__read_alias’ writing 32 bytes into a
region of size 5 overflows the destination [-Wstringop-overflow=]
45 | return __read_alias (__fd, __buf, __nbytes);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../include/sys/cdefs.h:3,
from ../include/features.h:465,
from ../posix/sys/types.h:25,
from ../include/sys/types.h:1,
from ../include/string.h:6,
from /build/tmp/t.c:1:
../posix/bits/unistd.h: In function ‘g’:
../posix/bits/unistd.h:25:28: note: in a call to function ‘__read_alias’
declared with attribute ‘write_only (2, 3)’
25 | extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf,
| ^~~~~~~~~~~~
../misc/sys/cdefs.h:174:41: note: in definition of macro ‘__REDIRECT’
174 | # define __REDIRECT(name, proto, alias) name proto __asm__ (__ASMNAME
(#alias))
| ^~~~
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index abcb0d5e3c..268d0ed1f2 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -522,4 +522,19 @@
# define __HAVE_GENERIC_SELECTION 0
#endif
+#if __GNUC_PREREQ (10, 0)
+/* Denotes a function pointer argument can be used to access an array
+ of N elements according to access mode. */
+# define __rdonly(...) \
+ __attribute__ ((__access__ (__read_only__, __VA_ARGS__)))
+# define __rdwr(...) \
+ __attribute__ ((__access__ (__read_write__, __VA_ARGS__)))
+# define __wronly(...) \
+ __attribute__ ((__access__ (__write_only__, __VA_ARGS__)))
+#else
+# define __rdonly(...)
+# define __rdwr(...)
+# define __wronly(...)
+#endif
+
#endif /* sys/cdefs.h */
diff --git a/posix/bits/unistd.h b/posix/bits/unistd.h
index 103095b8e4..8e4b0f084e 100644
--- a/posix/bits/unistd.h
+++ b/posix/bits/unistd.h
@@ -21,9 +21,10 @@
#endif
extern ssize_t __read_chk (int __fd, void *__buf, size_t __nbytes,
- size_t __buflen) __wur;
+ size_t __buflen) __wur __wronly (2, 3);
extern ssize_t __REDIRECT (__read_alias, (int __fd, void *__buf,
- size_t __nbytes), read) __wur;
+ size_t __nbytes), read)
+ __wur __wronly (2, 3);
extern ssize_t __REDIRECT (__read_chk_warn,
(int __fd, void *__buf, size_t __nbytes,
size_t __buflen), __read_chk)
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