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* [Bug libc/23978] dlmopen(): increasing the number of name spaces
[not found] <bug-23978-131@http.sourceware.org/bugzilla/>
@ 2020-01-02 7:45 ` ahori at riken dot jp
0 siblings, 0 replies; only message in thread
From: ahori at riken dot jp @ 2020-01-02 7:45 UTC (permalink / raw)
To: glibc-bugs
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https://sourceware.org/bugzilla/show_bug.cgi?id=23978
--- Comment #6 from Atsushi Hori <ahori at riken dot jp> ---
I discussed with the PiP (Process-in-Process) users on this issue. One idea, I
hope you can accept this, was brought up. Could you make the DL_NNS (defined
in sysdeps/generic/ldsodefs.h) a configure option?
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>From glibc-bugs-return-46991-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 02 10:52:12 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/24054] Many locales are missing date_fmt
Date: Thu, 02 Jan 2020 10:52:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=24054
--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Rafal Luzynski <rl@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=75ba929987f6950dd008ef0f6270f1b21e9af511
commit 75ba929987f6950dd008ef0f6270f1b21e9af511
Author: Rafał Lużyński <digitalfreak@lingonborough.com>
Date: Mon Dec 30 11:58:18 2019 +0100
Multiple locales: Add date_fmt (bug 24054)
It is not specified what should be the content of d_t_fmt and date_fmt
but in the built-in C locale those fields have only one difference:
date_fmt contains "%Z" (the current time zone) while d_t_fmt does not.
For most of the locales this commit does the following operation:
copy d_t_fmt to date_fmt, and then remove "%Z" from d_t_fmt.
If "%Z" was originally missing from d_t_fmt add it to date_fmt.
It also corrects comments where necessary.
Exceptions:
* In bo_CN, dz_BT, and km_KH "%Z" has not been added to date_fmt because
it was too difficult. In these locales date_fmt has been set to the
copy of d_t_fmt.
* In en_DK "%Z" has not been removed from d_t_fmt in order to preserve
the conformance with the standard mentioned in the comment.
The command to identify and initially edit the locales that need the
update was:
for i in `grep -lw d_t_fmt *`
do
if ! grep -qw date_fmt $i ; then
awk '/d_t_fmt/ { print $0; gsub("d_t_fmt", "date_fmt"); } //{
print $0 }' < $i > $i.next
mv $i.next $i
fi
done
and then each file was further edited manually.
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>From glibc-bugs-return-46992-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 02 10:53:50 2020
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/24054] Many locales are missing date_fmt
Date: Thu, 02 Jan 2020 10:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=24054
Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |digitalfreak@lingonborough.
| |com
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #2 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Fixed with the commit
https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=75ba929987f6950dd008ef0f6270f1b21e9af511
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>From glibc-bugs-return-46993-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 02 13:49:24 2020
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From: "tuliom at ascii dot art.br" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25335] New: errno set by a DSO is not available to a static executable
Date: Thu, 02 Jan 2020 13:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25335
Bug ID: 25335
Summary: errno set by a DSO is not available to a static
executable
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: tuliom at ascii dot art.br
CC: drepper.fsp at gmail dot com
Target Milestone: ---
When a DSO sets errno, the value is not accessible from a static executable
because they expect errno at different addresses.
Look at the following example, where a static executable calls dlopen:
$ cat Makefile
all: static-dlopen.test
static-dlopen: main.c errno.so
$(CC) -static -DDLOPEN $< -ldl -o $@
errno.so: errno.c
$(CC) -shared $< -o $@
%.test: %
LD_LIBRARY_PATH=$(PWD) ./$(*F)
clean:
rm -f errno.so
$ cat errno.c
#include <errno.h>
int *
errno_addr (void)
{
return &errno;
}
$ cat main.c
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#ifdef DLOPEN
#include <dlfcn.h>
void *handle;
int * (*errno_addr) (void);
void
test_dlopen (void)
{
handle = dlopen ("errno.so", RTLD_LAZY | RTLD_LOCAL);
if (handle == NULL)
{
printf ("dlopen (errno.so): %s\n", dlerror ());
exit (1);
}
errno_addr = dlsym (handle, "errno_addr");
if (errno_addr == NULL)
{
printf ("dlsym (errno_addr): %s\n", dlerror ());
exit (1);
}
printf("dlopen &errno = %p\n", errno_addr());
errno_addr = NULL;
dlclose (handle);
}
#endif
int
main ()
{
printf("main &errno = %p\n", &errno);
#if DLOPEN
test_dlopen();
#endif
return 0;
}
When running this example, we get:
main &errno = 0x4d9840
dlopen &errno = 0x4d97a0
Reproduced on x86_64 and powerpc64le.
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>From glibc-bugs-return-46994-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 02 22:10:21 2020
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From: "Jens.Schleusener at fossies dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25337] New: Codespell report for glibc
Date: Thu, 02 Jan 2020 22:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25337
Bug ID: 25337
Summary: Codespell report for glibc
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: Jens.Schleusener at fossies dot org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The FOSS server fossies.org offers a new feature "Source code misspelling
reports":
https://fossies.org/features.html#codespell
Such reports are normally only generated on request, but for testing purposes I
have as Fossies administrator now done a "codespell" check for the "glibc"
project:
https://fossies.org/linux/misc/glibc/codespell.html
That version-independent URL should redirect always to the last report (if
available), so currently to
https://fossies.org/linux/misc/glibc-2.30.tar.xz/codespell.html
Although some obviously wrong matches ("false positives") are already filtered
(ignored) please inform me if you find more of them so that I can force a new
improved check if applicable.
And yes, some spelling suggestions are worth discussing, some obvious spelling
errors may be desired (for e.g. in variable names) and others are contained in
third-party code.
Just for information there are also two supplemental pages
https://fossies.org/linux/misc/glibc/codespell_conf.html
showing some used "codespell" configurations,
https://fossies.org/linux/misc/glibc-2.30.tar.xz/codespell_fps.html
showing all resulting obvious "false positives".
Maybe more useful are the results for the current master version that are
available within a special "test" folder not fully integrated in the "Fossies"
system:
https://fossies.org/linux/test/glibc-master.tar.xz/codespell.html
currently an alias for
https://fossies.org/linux/test/glibc-master.20200102_2143.tar.xz/codespell.html
Regards
Jens
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Subject: [Bug nptl/22850] Harden TCB against stack protector bypass via overwrite of stack_guard
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Randy Macleod <rwmacleod at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rwmacleod at gmail dot com
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>From glibc-bugs-return-46996-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 03 10:25:08 2020
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From: "m_langbe at informatik dot uni-kl.de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/19292] Improve __assert_fail debuggability
Date: Fri, 03 Jan 2020 10:24:00 -0000
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m_langbe at informatik dot uni-kl.de changed:
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CC| |m_langbe at informatik dot uni-kl.
| |de
--- Comment #1 from m_langbe at informatik dot uni-kl.de ---
sometimes when re-compiling from the gdb console and re-starting w.o.
re-starting gdb, the assert-fail breaks after the stack-trace is lost.
the, after re-starting gdb, it breaks in alocation where still the whole path
to the "assert" location is present (i.e in the "raise.c " method
I do not know if one hsould call this a bug, however it took me quite a while
to realize it (trying to set some strange "catch", setting debug options for
gdb itself, e.t.c. .
my versions:
GNU gdb 8.1.0.20180409-git,
gcc 7.4.0,
GNU make 4.1
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Subject: [Bug localedata/25233] Consider . as the thousands separator for sl_SI (Slovenian)
Date: Fri, 03 Jan 2020 11:31:00 -0000
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
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----------------------------------------------------------------------------
CC| |digitalfreak@lingonborough.
| |com
--- Comment #1 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
This is correct according to CLDR [1] as well. The patch is here: [2]
Some remarks:
* The old thousands separator is not a regular space (<U0020>), it's a <U202F>
character, narrow no-break space, which indeed may be displayed as a space if a
constant width font is used.
* This patch fixes both LC_MONETARY (monetary formatting, strfmon) and
LC_NUMERIC (non-monetary numeric formatting, sprintf and other functions of the
family).
* Note that in LC_NUMERIC section of sl_SI grouping is set to "0;0" which means
that no thousands grouping will be used, at least by the libraries which
respect this setting.
[1] https://st.unicode.org/cldr-apps/v#/sl/Symbols/
[2] https://sourceware.org/ml/libc-alpha/2020-01/msg00042.html
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Subject: [Bug libc/24967] jemalloc static linking causes runtime failure
Date: Fri, 03 Jan 2020 14:43:00 -0000
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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--- Comment #12 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.31 (commit 1bdda52fe92fd01b424cd6fbb63e3df96a95015c).
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Subject: [Bug libc/24967] jemalloc static linking causes runtime failure
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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>From glibc-bugs-return-47000-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 03 18:14:45 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25341] New: Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
Date: Fri, 03 Jan 2020 18:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25341
Bug ID: 25341
Summary: Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH
from error tolerance perspective
Product: glibc
Version: 2.32
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
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Hello. I am cross compiling some test images. Let's imagine that we have the
following configuration:
+--------------------------+
| |
| +------------+ |
| | | |
| amd64 | aarch64_be | |
| (+qemu) | container | |
| container | | |
| +------------+ |
| |
+--------------------------+
We have already cross compiled bash for "aarch64_be" container. We want to run
bash from both "amd64" and "aarch64_be" (via qemu) containers.
```
LD_PRELOAD='/usr/aarch64_be-unknown-linux-gnu/lib64/libreadline.so.7:/usr/aarch64_be-unknown-linux-gnu/lib64/libtinfo.so.6:/usr/aarch64_be-unknown-linux-gnu/lib64/libc.so.6:/usr/aarch64_be-unknown-linux-gnu/lib64/libtinfow.so.6'
/usr/aarch64_be-unknown-linux-gnu/bin/bash -c 'echo'
```
It is a bit dirty, but works perfect. Now let's try to run "amd64" bash with
the same LD_PRELOAD value:
```
LD_PRELOAD='/usr/aarch64_be-unknown-linux-gnu/lib64/libreadline.so.7:/usr/aarch64_be-unknown-linux-gnu/lib64/libtinfo.so.6:/usr/aarch64_be-unknown-linux-gnu/lib64/libc.so.6:/usr/aarch64_be-unknown-linux-gnu/lib64/libtinfow.so.6'
/bin/bash -c 'echo'
```
> ERROR: ld.so: object '/usr/aarch64_be-unknown-linux-gnu/lib64/libreadline.so.7' from LD_PRELOAD cannot be preloaded (ELF file data encoding not little-endian): ignored.
> ...
LD_PRELOAD said that LD just ignored wrong libraries and "amd64" bash works
perfect. I love this behaviour.
Now let's try to use LD_LIBRARY_PATH instead.
```
LD_LIBRARY_PATH='/usr/aarch64_be-unknown-linux-gnu/lib64'
/usr/aarch64_be-unknown-linux-gnu/bin/bash -c 'echo'
```
Works perfect.
```
LD_LIBRARY_PATH='/usr/aarch64_be-unknown-linux-gnu/lib64' /bin/bash -c 'echo'
```
> /bin/bash: error while loading shared libraries: /usr/aarch64_be-unknown-linux-gnu/lib64/libreadline.so.7: ELF file data encoding not little-endian
> ERRO exit status 127
Glibc failed.
It looks like LD_LIBRARY_PATH is not error tolerant. I think that glibc should
check all available pathes before failing. We shouldn't immediately fail when
can't load one "path + library" pair.
Error tolerance of LD_LIBRARY_PATH is important for running cross compiled
application in native container, because it should be possible to run native
applications from cross compiled application.
I am not sure whether this is a bug or feature.
Thank you.
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Subject: [Bug string/25343] New: strerror_r() and INT_MIN returns "Unknown error -18446744071562067968" (for x86_64)
Date: Fri, 03 Jan 2020 19:14:00 -0000
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For unknown errors __strerror_r() does:
p = _itoa_word (abs (errnum), &numbuf[20], 10, 0);
where abs(INT_MIN) is undefined. As it happens, on x86_64 abs(INT_MIN) returns
INT_MIN, which is widened to unsigned long long int -- hence the silly result.
I guess absll(errnum) would fix the error where long long int is bigger than
int.
Otherwise, I dunno what hoops the library should be jumping through to allow
for not-2's-complement.
FWIW: the man-page mentions EINVAL and ERANGE errors, but is silent on whether
the GNU strerror_r() returns errors. The implementation clearly does not
return any errors -- not even for buflen == 0 (with or without buf == NULL).
[buf == NULL with buflen != 0 gives a SEGV -- duh.]
Also FWIW: the man-page, in general, talks of known/unknown error numbers and
valid/invalid error numbers, but does not say how or whether those are
different. This is also true of POSIX.1 which is not a miracle of precision
either. The glibc POSIX/XSI implementation clearly does not distinguish known
and valid, and 0 is known -- the function returns EINVAL for unknown error
numbers, as well as setting a string. (Incidentally, if EINVAL is returned
that takes precedence over ERANGE, but that's also a secret.)
It would be nice to have a function to map an error number to its macro-name,
returning a constant string (for known) or NULL (for unknown) errors. But
that's another story.
Chris
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
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--- Comment #1 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
I've found the reason of this issue in elf/dl-load.c:
/* Open a file and verify it is an ELF file for this architecture. We
ignore only ELF files for other architectures. Non-ELF files and
ELF files with different header information cause fatal errors since
this could mean there is something wrong in the installation and the
user might want to know about this.
If FD is not -1, then the file is already open and FD refers to it.
In that case, FD is consumed for both successful and error returns. */
So now I think that this is a bug rather than feature. "open_verify" is not
able to ignore "aarch64_be" which is definitely related to other architecture.
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
Date: Fri, 03 Jan 2020 19:50:00 -0000
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--- Comment #2 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
Created attachment 12165
--> https://sourceware.org/bugzilla/attachment.cgi?id=12165&action=edit
elf/dl-load open_verify debug patch
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>From glibc-bugs-return-47006-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 03 19:56:21 2020
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
Date: Fri, 03 Jan 2020 19:56:00 -0000
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--- Comment #3 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
I've attached a debug patch where we can see the following result:
1041: open_verify 0 ELF file data encoding not little-endian
ERROR: ld.so: object 'libsandbox.so' from LD_PRELOAD cannot be preloaded (ELF
file data encoding not little-endian): ignored.
1041: open_verify 0 ELF file data encoding not little-endian
aarch64_be-unknown-linux-gnu-gcc: error while loading shared libraries:
/usr/aarch64_be-unknown-linux-gnu/lib64/libc.so.6: ELF file data encoding not
little-endian
So we can definitely say that both LD_PRELOAD and LD_LIBRARY_PATH received the
same error from "open_verify". LD_PRELOAD ignored this error, but
LD_LIBRARY_PATH failed.
But the problem is that "open_verify" description looks wrong. This function
should somehow ignore files for another architecture. I will investigate it
deeper.
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>From glibc-bugs-return-47007-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 03 20:07:06 2020
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
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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> ---
LD_PRELOAD still gets the same load failure, but ignores it. This is basically
at the last step. I expect LD_PRELOAD will still not pick up the object even
if search path processing is active (if a path without / is used) because it
runs into the same load failure then.
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>From glibc-bugs-return-47008-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 03 23:28:55 2020
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
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--- Comment #5 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
I agree, we need to ignore files from different architecture properly. Both
LD_PRELOAD and LD_LIBRARY_PATH shouldn't receive these files.
Today we can see that "open_verify" function is full of legacy code. It is
almost impossible to understand it. We need first version of this function from
glibc-2.2 from 2000 year to understand something.
https://sourceware.org/git/?p=glibc.git;a=blob;f=elf/dl-load.c;h=45f38f3c44d1c66619281bacd2cbb915f5931951;hb=55f462edb056e70ddfdd7bf388a8088d6773ff1d
Unfortunately we can see that "open_verify" was broken by design. It has
nothing for ignoring other architectures.
if (ehdr->e_ident[EI_DATA] != byteorder)
{
if (BYTE_ORDER == BIG_ENDIAN)
lose (0, fd, name, NULL, NULL,
"ELF file data encoding not big-endian");
else
lose (0, fd, name, NULL, NULL,
"ELF file data encoding not little-endian");
}
...
lose (0, fd, name, NULL, NULL, N_("internal error"));
This code was not touched since 2000 year. We can see that it throws same
signal (with different text) both for different architecture and internal
error. This is not acceptable.
What we can do? I think that "goto close_and_out;" instead of "goto call_lose;"
will be a good solution. But I am 100% sure that this patch will never be
accepted. This code is too old.
But people can use this patch for host container that should be able to ignore
different architectures. I've tested this patch on my system, it works perfect.
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--- Comment #6 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
Created attachment 12166
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elf mismatch is not fatal glibc-2.29 patch
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Subject: [Bug dynamic-link/25341] Different behaviour of LD_PRELOAD and LD_LIBRARY_PATH from error tolerance perspective
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--- Comment #7 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
Created attachment 12167
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elf mismatch is not fatal glibc-2.30 patch
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>From glibc-bugs-return-47011-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 06 19:52:58 2020
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Subject: [Bug localedata/21971] Added New Locale for mfe_MU
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Denis Jean <later01 at gmail dot com> changed:
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--- Comment #6 from Denis Jean <later01 at gmail dot com> ---
Created attachment 12171
--> https://sourceware.org/bugzilla/attachment.cgi?id=12171&action=edit
The orthography for the name of days and months have been corrected into the
official Kreol Morisien Orthography
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>From glibc-bugs-return-47012-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 06 20:01:38 2020
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--- Comment #7 from Denis Jean <later01 at gmail dot com> ---
The correct orthography for Kreol Morisien(Mauritian Creole) can be verified at
http://www.cleverdodo.mu/userfiles/media/Lortograf%20Kreol%20Morisien.pdf
Section 6.1.1
This is the official language that is being taught at school and the University
of Mauritius, using this document as guide. This document has precedence over
any other according to lecturers even over the official dictionary. The
language is young and not set in stones, but for the days and months, the
dictionary and AKM orthography follow the same rules.
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Subject: [Bug localedata/21971] Added New Locale for mfe_MU
Date: Tue, 07 Jan 2020 09:23:00 -0000
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2020-01-07
Resolution|FIXED |---
Ever confirmed|0 |1
--- Comment #8 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Reopen to correct the orthography for the name of days and months.
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>From glibc-bugs-return-47014-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 12:02:54 2020
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Subject: [Bug dynamic-link/25051] aarch64, powerpc64 uses surplus static tls for dynamically loaded dsos
Date: Tue, 07 Jan 2020 12:02:00 -0000
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Szabolcs Nagy <nsz at gcc dot gnu.org> changed:
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--- Comment #2 from Szabolcs Nagy <nsz at gcc dot gnu.org> ---
posted a patch for discussion
https://sourceware.org/ml/libc-alpha/2020-01/msg00099.html
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>From glibc-bugs-return-47015-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 16:09:43 2020
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From: "lukma at denx dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25352] New: dl_naudit wrong offset in struct rtld_global_ro on 32 bit ARMv7
Date: Tue, 07 Jan 2020 16:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25352
Bug ID: 25352
Summary: dl_naudit wrong offset in struct rtld_global_ro on 32
bit ARMv7
Product: glibc
Version: 2.31
Status: UNCONFIRMED
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CC: drepper.fsp at gmail dot com
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Dear Community,
The commit 1bdda52fe92fd01b424cd6fbb63e3df96a95015c (elf: Move vDSO setup to
rtld (BZ#24967)) caused a regression on my ARMv7 (32 bit) based setup.
When I start (a previously working) binary - I do receive following error:
Program received signal SIGSEGV, Segmentation fault.
__libc_start_main (main=0x40380d <main>, argc=1, argv=0x7efffdf4,
init=<optimized out>, fini=0x4050e9 <__libc_csu_fini>, rtld_fini=0x76fe2355
<_dl_fini>, stack_end=0x7efffdf4) at libc-start.c:274
274 if (afct->preinit != NULL)
(gdb) p afct
$1 = (struct audit_ifaces *) 0x0
(gdb) disassemble /m 0x76ee44a0,+10
Dump of assembler code from 0x76ee44a0 to 0x76ee44aa:
268 if (__glibc_unlikely (GLRO(dl_naudit) > 0))
0x76ee44a0 <__libc_start_main+84>: ldr r3, [pc, #264] ; (0x76ee45ac
<__libc_start_main+352>)
0x76ee44a2 <__libc_start_main+86>: ldr r2, [sp, #0]
0x76ee44a4 <__libc_start_main+88>: ldr r3, [r2, r3]
=> 0x76ee44a6 <__libc_start_main+90>: ldr.w r7, [r3, #440] ; 0x1b8
0x76ee44aa <__libc_start_main+94>: cmp r7, #0
0x76ee44ac <__libc_start_main+96>: bne.n 0x76ee4544
<__libc_start_main+248>
End of assembler dump.
(gdb) i r r3
r3 0x76ffe908 1996482824
(gdb) p &_rtld_global_ro._dl_naudit
$26 = (unsigned int *) 0x76ffeab8 <_rtld_global_ro+432>
(gdb) p &_rtld_global_ro
$27 = (struct rtld_global_ro *) 0x76ffe908 <_rtld_global_ro>
The issue seems to be that the compile time offset for GLRO(dl_naudit) (440
dec)
is different than the one returned at runtime (432 dec).
This causes reading
(gdb) i r r7
r7 0x1000000 16777216
And we do have null pointer dereference:
(gdb) p afct
$1 = (struct audit_ifaces *) 0x0
With this patch reverted:
(gdb) disassemble /m 0x76ee4508,+10
Dump of assembler code from 0x76ee4508 to 0x76ee4512:
268 if (__glibc_unlikely (GLRO(dl_naudit) > 0))
0x76ee4508 <__libc_start_main+84>: ldr r3, [pc, #264] ; (0x76ee4614
<__libc_start_main+352>)
0x76ee450a <__libc_start_main+86>: ldr r2, [sp, #0]
0x76ee450c <__libc_start_main+88>: ldr r3, [r2, r3]
=> 0x76ee450e <__libc_start_main+90>: ldr.w r7, [r3, #432] ; 0x1b0
0x76ee4512 <__libc_start_main+94>: cmp r7, #0
0x76ee4514 <__libc_start_main+96>: bne.n 0x76ee45ac
<__libc_start_main+248>
End of assembler dump.
(gdb) i r r7
r7 0x0 0
(gdb) i r r3
r3 0x76ffe908 1996482824
The offset here is correct - #432 dec
HW platform:
Hardware : ARM-Versatile Express
model name : ARMv7 Processor rev 0 (v7l) (32 bit)
Run under QEMU
root@y2038arm:~# file /usr/bin/test_n2038
/usr/bin/test_n2038: ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV),
dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 5.1.0,
BuildID[sha1]=df17b5cf94232f94f77afc03a3bceaa77b25ddf4, stripped
(gdb) bt
#0 __libc_start_main (main=0x40380d <main>, argc=1, argv=0x7efffdf4,
init=0x4050a9 <__libc_csu_init>, fini=0x4050e9 <__libc_csu_fini>,
rtld_fini=0x76fe2355 <_dl_fini>, stack_end=0x7efffdf4) at libc-start.c:268
#1 0x00401174 in _start () at ../sysdeps/arm/start.S:110
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
It looks to me that the issue is with:
--------------------------------------
struct rtld_global_ro @ sysdeps/generic/ldsodefs.h
+# define PROCINFO_DECL
+# ifndef PROCINFO_CLASS
+# define PROCINFO_CLASS EXTERN
+# endif
+# include <dl-vdso-setup.c>
Inclusion of dl-vdso-setup.c (vdso pointers for clock_gettme and gettimeofday)
may cause the +8B offset for _dl_n_audit - the last element in the structure.
However, I don't know why the '__glibc_unlikely (GLRO(dl_naudit)' returns the
data as the vDSO were not defined at all in struct rtld_global_ro.
Thanks in advance for help.
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>From glibc-bugs-return-47016-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 16:18:34 2020
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Subject: [Bug libc/25352] dl_naudit wrong offset in struct rtld_global_ro on 32 bit ARMv7
Date: Tue, 07 Jan 2020 16:18:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Make sure you are not mixing different versions of ld.so and libc.so.
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>From glibc-bugs-return-47017-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 16:29:35 2020
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25352] dl_naudit wrong offset in struct rtld_global_ro on 32 bit ARMv7
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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 #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Indeed libc.so and ld.so should match, what gdb command 'info proc map' shows?
I think we can move the dl-vdso-setup.c variables to the end of the
rtld_global_ro struct, but even though the scenario of different ld/lib* are
not really supported.
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>From glibc-bugs-return-47018-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 20:27:46 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #36 from Jwtiayr Nariman <jwtiyar at gmail dot com> ---
Created attachment 12173
--> https://sourceware.org/bugzilla/attachment.cgi?id=12173&action=edit
Localedata file for ckb_IQ
Here is new version of localedata file for ckb.thanks
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>From glibc-bugs-return-47019-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 20:38:14 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #37 from Aras Noori <aras.noori at gmail dot com> ---
(In reply to Mike Frysinger from comment #35)
> first, please update the header of the file to match all the current
> locales. the first ~10 lines should be the same (e.g. as en_US). you
> should sync to latest git as the last release is out of date already.
>
> > title "Kurdish language locale based on Arabic letters"
>
> this should be:
> Central Kurdish language locale for Iraq
>
> > tel "+49 17629857380"
>
> leave this field blank
>
> > language "Kurdish"
>
> change to "Central Kurdish"
>
> > territory "Iraq, Iran"
>
> drop Iran. this locale is only for Iraq.
>
> > category "ckb_IQ:2000";LC_IDENTIFICATION
>
> you'll need to fix all these category fields. copy them from en_US for
> their correct values.
>
> > LC_COLLATE
>
> please rebase this to start with:
> copy "iso14651_t1"
>
> > % This is the POSIX Locale definition for the LC_NUMERIC category.
>
> delete these old comments from the LC_NUMERIC, LC_TIME, LC_NAME, and
> LC_ADDRESS categories
>
> > LC_TIME
>
> are you sure about the day/abday/mon/abmon translations ? CLDR says they're
> different.
>
> make sure day/abday start on Sunday
>
> > am_pm
>
> does Iraq really use am/pm notation ? if not, leave these fields blank.
>
> > first_workday 7
>
> change this to 2 and add this line:
> week 7;19971130;1
>
> > yesexpr "<U0628><U06D5><U06B5><U06CE>"
> > noexpr "<U0646><U06D5><U062E><U06CE><U0631>"
>
> these need to be updated. these should be regular expressions to match a
> yes/no answer. see the current en_US value as an example.
>
> please also provide yesstr/nostr translations
>
> > LC_PAPER
> > LC_MEASUREMENT
>
> change both of these categories to simply:
> copy "ar_IQ"
>
> > name_gen "<U002D><U0073><U0061><U006E>"
>
> this is "-san". is that correct ?
>
> > country_car "<U0049><U0051>"
>
> shouldn't this be "IRQ" instead of "IQ" ?
>
> > LC_ADDRESS
>
> please define country_name (localized translation for Iraq)
>
> > tel_int_fmt "+%c ;%a ;%l"
>
> pretty sure this should be:
> +%c %a%t%l
>
> > tel_dom_fmt "<U202A><U0025><U0041><U2012><U0025><U006C><U202C>"
>
> are you sure this is correct ?
Thank you for your tipps, @Jwtiayr and I fixed the bugs.
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>From glibc-bugs-return-47020-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 20:39:39 2020
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From: "aras.noori at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Tue, 07 Jan 2020 20:39:00 -0000
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--- Comment #38 from Aras Noori <aras.noori at gmail dot com> ---
(In reply to Jwtiayr Nariman from comment #36)
> Created attachment 12173 [details]
> Localedata file for ckb_IQ
>
> Here is new version of localedata file for ckb.thanks
Great Work.
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Subject: [Bug libc/25352] dl_naudit wrong offset in struct rtld_global_ro on 32 bit ARMv7
Date: Tue, 07 Jan 2020 23:09:00 -0000
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--- Comment #3 from Lukasz Majewski <lukma at denx dot de> ---
(gdb) info proc map
process 1136
Mapped address spaces:
Start Addr End Addr Size Offset objfile
0x400000 0x408000 0x8000 0x0 /usr/bin/test_n2038
0x417000 0x418000 0x1000 0x7000 /usr/bin/test_n2038
0x418000 0x419000 0x1000 0x8000 /usr/bin/test_n2038
0x76ea8000 0x76eba000 0x12000 0x0
/opt/lib/libpthread-2.30.9000.so
0x76eba000 0x76ec9000 0xf000 0x12000
/opt/lib/libpthread-2.30.9000.so
0x76ec9000 0x76eca000 0x1000 0x11000
/opt/lib/libpthread-2.30.9000.so
0x76eca000 0x76ecb000 0x1000 0x12000
/opt/lib/libpthread-2.30.9000.so
0x76ecb000 0x76ecd000 0x2000 0x0
0x76ecd000 0x76fac000 0xdf000 0x0 /opt/lib/libc-2.30.9000.so
0x76fac000 0x76fbb000 0xf000 0xdf000 /opt/lib/libc-2.30.9000.so
0x76fbb000 0x76fbd000 0x2000 0xde000 /opt/lib/libc-2.30.9000.so
0x76fbd000 0x76fbe000 0x1000 0xe0000 /opt/lib/libc-2.30.9000.so
0x76fbe000 0x76fc1000 0x3000 0x0
0x76fc1000 0x76fc6000 0x5000 0x0 /opt/lib/librt-2.30.9000.so
0x76fc6000 0x76fd5000 0xf000 0x5000 /opt/lib/librt-2.30.9000.so
0x76fd5000 0x76fd6000 0x1000 0x4000 /opt/lib/librt-2.30.9000.so
0x76fd6000 0x76fd7000 0x1000 0x5000 /opt/lib/librt-2.30.9000.so
0x76fd7000 0x76fef000 0x18000 0x0 /lib/ld-2.28.so
0x76ff9000 0x76ffb000 0x2000 0x0
0x76ffb000 0x76ffc000 0x1000 0x0 [sigpage]
0x76ffc000 0x76ffd000 0x1000 0x0 [vvar]
0x76ffd000 0x76ffe000 0x1000 0x0 [vdso]
0x76ffe000 0x76fff000 0x1000 0x17000 /lib/ld-2.28.so
0x76fff000 0x77000000 0x1000 0x18000 /lib/ld-2.28.so
0x7efdf000 0x7f000000 0x21000 0x0 [stack]
0xffff0000 0xffff1000 0x1000 0x0 [vectors]
Indeed, the ld.so is from 2.28. If the mismatch is not supported, then I will
update ld.so as well.
Thanks for pointing this.
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Subject: [Bug localedata/25233] Consider . as the thousands separator for sl_SI (Slovenian)
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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 Rafal Luzynski <rl@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=135540285cb44f820dac41c2b95531db33658f9f
commit 135540285cb44f820dac41c2b95531db33658f9f
Author: Rafał Lużyński <digitalfreak@lingonborough.com>
Date: Fri Jan 3 12:11:20 2020 +0100
sl_SI locale: Use "." as the thousands separator (bug 25233)
This is correct according to CLDR [1] and Florian Weimer's quick
research. [2]
[1] https://st.unicode.org/cldr-apps/v#/sl/Symbols/
[2] https://sourceware.org/bugzilla/show_bug.cgi?id=25233#c0
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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--- Comment #3 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
Fixed by the commit 135540285cb44f820dac41c2b95531db33658f9f.
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>From glibc-bugs-return-47024-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 07 23:42:57 2020
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Subject: [Bug libc/25352] dl_naudit wrong offset in struct rtld_global_ro on 32 bit ARMv7
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--- Comment #4 from Lukasz Majewski <lukma at denx dot de> ---
I had to explicitly add the path to dynamic linker:
-Wl,--dynamic-linker=${Y2038_GLIBC_DEPLOY_DIR}${base_libdir}/ld-linux-armhf.so.3
when building test_n2038.
After this the correct ld.so is used:
0x76ffe000 0x76fff000 0x1000 0x19000 /opt/lib/ld-2.30.9000.so
0x76fff000 0x77000000 0x1000 0x1a000 /opt/lib/ld-2.30.9000.so
Thanks one more time for help :-)
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--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
Not a bug.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
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From: "maiku.fabian at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Wed, 08 Jan 2020 17:35:00 -0000
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--- Comment #39 from Mike FABIAN <maiku.fabian at gmail dot com> ---
> LC_COLLATE
> % The Kurdish Sorani, Bahdini, and others dialects is mainly written using a modified (Arabic-based alphabet) with 33 letters.
> % Unlike the regular Arabic alphabet, which is an abjad, kurdish is an alphabet in which vowels are mandatory, making the script easy to read.
> %
> % The kurdish alphabet order is:
> % in Latin: a, b, c, ç, d, e, ê, f, g, h, i, î, j, k, l, ll, m, n, o, p, q, r, rr, s, sh, t, u, uu, v, w, x, y, z
> % vowels: A, E, I, O, U, UU
> %
> % Copy the template from ISO/IEC 14651
>
> order_start forward; forward
> %
> % Kurdish numeric characters.
> %
> <U0660> <U0660>
You still did not base the collation on iso14651_t1.
Your LC_COLLATE section should start like this:
LC_COLLATE
copy "iso14651_t1"
and then you should only reorder the characters which are not correctly
ordered already, i.e. you should only do modifications to the default
collation order comming from "iso14651_t1", *not* write everything from
scratch.
I can try to help you with that and try to rewrite your LC_COLLATE.
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>From glibc-bugs-return-47028-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 08 20:27:54 2020
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From: "jwtiyar at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Wed, 08 Jan 2020 20:27:00 -0000
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--- Comment #40 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
T(In reply to Mike FABIAN from comment #39)
> > LC_COLLATE
> > % The Kurdish Sorani, Bahdini, and others dialects is mainly written using a modified (Arabic-based alphabet) with 33 letters.
> > % Unlike the regular Arabic alphabet, which is an abjad, kurdish is an alphabet in which vowels are mandatory, making the script easy to read.
> > %
> > % The kurdish alphabet order is:
> > % in Latin: a, b, c, ç, d, e, ê, f, g, h, i, î, j, k, l, ll, m, n, o, p, q, r, rr, s, sh, t, u, uu, v, w, x, y, z
> > % vowels: A, E, I, O, U, UU
> > %
> > % Copy the template from ISO/IEC 14651
> >
> > order_start forward; forward
> > %
> > % Kurdish numeric characters.
> > %
> > <U0660> <U0660>
>
> You still did not base the collation on iso14651_t1.
>
> Your LC_COLLATE section should start like this:
>
> LC_COLLATE
> copy "iso14651_t1"
>
> and then you should only reorder the characters which are not correctly
> ordered already, i.e. you should only do modifications to the default
> collation order comming from "iso14651_t1", *not* write everything from
> scratch.
>
> I can try to help you with that and try to rewrite your LC_COLLATE.
Thank you mike, its little complicated i think i don't understand your point.
But if you can do its really appreciated.
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>From glibc-bugs-return-47029-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 09 21:21:35 2020
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From: "aladjev.andrew at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/23960] [2.28 Regression]: New getdents{64} implementation breaks qemu-user
Date: Thu, 09 Jan 2020 21:21:00 -0000
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--- Comment #53 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
Please review getdents function once again:
https://github.com/bminor/glibc/blob/master/sysdeps/unix/sysv/linux/getdents.c#L21
What does it mean "!_DIRENT_MATCHES_DIRENT64"?
https://github.com/bminor/glibc/blob/master/sysdeps/unix/sysv/linux/bits/dirent.h#L54
#if defined __OFF_T_MATCHES_OFF64_T && defined __INO_T_MATCHES_INO64_T
# define _DIRENT_MATCHES_DIRENT64 1
#else
# define _DIRENT_MATCHES_DIRENT64 0
#endif
>From architecture perspective "!_DIRENT_MATCHES_DIRENT64" means "we need to
emulate getdents using getdents64".
So this issue can be titled correctly as "getdents emulation using getdents64
is not working in several cases".
/* Pack the dirent64 struct down into 32-bit offset/inode fields, and ensure
that no overflow occurs. */
The main assumption is wrong. Packing "dirent64" down to "dirent" is not
possible in general case. This issue is very popular. Musl libc has the same
issue.
https://github.com/ifduyue/musl/blob/master/src/internal/syscall.h#L131-L134
/* fixup legacy 32-bit-vs-lfs64 junk */
#define SYS_getdents SYS_getdents64
Only UClibc (and uclibc-ng) works almost correctly with "getdents"
https://github.com/wbx-github/uclibc-ng/blob/master/libc/sysdeps/linux/common/getdents.c#L94-L116
You can enable "ARCH_HAS_DEPRECATED_SYSCALLS" config option and "getdents"
won't be emulated with "getdents64", it will use regular "getdents" syscall.
Is it possible to fix "getdents" emulation? Yes, we need to replace
"getdents64" syscall with "__X32_SYSCALL_BIT + __NR_getdents64". This syscall
guarantees that packing "dirent64" down to "dirent" is possible. This
replacement requires "CONFIG_X86_X32=y" in your host kernel config.
If I were glibc/musl core developer I will rewrite "getdents" in the following
way:
1. If x32 syscall is available - use "__X32_SYSCALL_BIT + __NR_getdents64".
2. Otherwise do not try to emulate "getdents" using "getdents64", use regular
"getdents" syscall.
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Subject: [Bug localedata/25233] Consider . as the thousands separator for sl_SI (Slovenian)
Date: Thu, 09 Jan 2020 22:33:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.31
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Subject: [Bug localedata/25233] Consider "." as the thousands separator for sl_SI (Slovenian)
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Rafal Luzynski <digitalfreak at lingonborough dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Consider . as the thousands |Consider "." as the
|separator for sl_SI |thousands separator for
|(Slovenian) |sl_SI (Slovenian)
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>From glibc-bugs-return-47032-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 09 23:16:50 2020
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Subject: [Bug localedata/21971] Added New Locale for mfe_MU
Date: Thu, 09 Jan 2020 23:16:00 -0000
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| |com
--- Comment #9 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
For multiple reasons I suggest filing a new bug report rather than reopening
this old one.
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>From glibc-bugs-return-47033-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 09 23:44:31 2020
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/24366] la_VA locale support
Date: Thu, 09 Jan 2020 23:44:00 -0000
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--- Comment #3 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
I hesitate to add such locales. My point is that Latin language does not have
native speakers. We will not make anybody's life easier supporting Latin
language in Linux. I believe people who could be potential users of la_VA
would rather choose their native languages in their computers, like Italian,
Spanish, German, and so on.
However, I don't want to close this as "WONTFIX" yet because maybe I am missing
something.
By the way, the patch contains some technical issues but I don't want to
discuss them here because I don't want to suggest that I will accept the patch
if they are corrected.
See also: bug 21919.
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>From glibc-bugs-return-47034-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 10 16:00:58 2020
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Subject: [Bug localedata/25139] Please add the new mnw_MM locale
Date: Fri, 10 Jan 2020 16:00:00 -0000
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #14 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Will be in the next release (2.31)
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--- Comment #11 from kokoye2007 <kokoye2007 at gmail dot com> ---
Created attachment 12187
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shn_MM fix string message
fix for locale_shn_2012-07-01.txt to locale_shn_2020_01_12.txt
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--- Comment #12 from kokoye2007 <kokoye2007 at gmail dot com> ---
Created attachment 12188
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shn_MM fix string message .diff / patch
Its small fix - 2012 version vs 2020 version
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--- Comment #13 from kokoye2007 <kokoye2007 at gmail dot com> ---
Comment on attachment 12187
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shn_MM fix string message
STILL FIX
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Attachment #12187|0 |1
is obsolete| |
Attachment #12188|0 |1
is obsolete| |
--- Comment #14 from kokoye2007 <kokoye2007 at gmail dot com> ---
Created attachment 12189
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shn_MM fix string message
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>From glibc-bugs-return-47039-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Jan 12 10:11:34 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #41 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
What we do now dear mike?
On Wed, Jan 8, 2020, 20:35 maiku.fabian at gmail dot com <
sourceware-bugzilla@sourceware.org> wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=9809
>
> --- Comment #39 from Mike FABIAN <maiku.fabian at gmail dot com> ---
> > LC_COLLATE
> > % The Kurdish Sorani, Bahdini, and others dialects is mainly written
> using a modified (Arabic-based alphabet) with 33 letters.
> > % Unlike the regular Arabic alphabet, which is an abjad, kurdish is an
> alphabet in which vowels are mandatory, making the script easy to read.
> > %
> > % The kurdish alphabet order is:
> > % in Latin: a, b, c, ç, d, e, ê, f, g, h, i, î, j, k, l, ll, m, n, o, p,
> q, r, rr, s, sh, t, u, uu, v, w, x, y, z
> > % vowels: A, E, I, O, U, UU
> > %
> > % Copy the template from ISO/IEC 14651
> >
> > order_start forward; forward
> > %
> > % Kurdish numeric characters.
> > %
> > <U0660> <U0660>
>
> You still did not base the collation on iso14651_t1.
>
> Your LC_COLLATE section should start like this:
>
> LC_COLLATE
> copy "iso14651_t1"
>
> and then you should only reorder the characters which are not correctly
> ordered already, i.e. you should only do modifications to the default
> collation order comming from "iso14651_t1", *not* write everything from
> scratch.
>
> I can try to help you with that and try to rewrite your LC_COLLATE.
>
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #42 from Mike FABIAN <maiku.fabian at gmail dot com> ---
You have
<U0640> IGNORE
in your sort order.
U+0640 ARABIC TATWEEL
Why IGNORE?
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--- Comment #43 from Mike FABIAN <maiku.fabian at gmail dot com> ---
%
%
% Other control characters etc. upto order_end
%
Why do you sort control characters? These have nothing to do with
the Kurdish Sorani language.
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>From glibc-bugs-return-47043-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 13 18:03:14 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 18:03:00 -0000
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--- Comment #44 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12192
--> https://sourceware.org/bugzilla/attachment.cgi?id=12192&action=edit
0001-Add-ckb_IQ-locale.patch
That is your original locale file as a patch
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #45 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12193
--> https://sourceware.org/bugzilla/attachment.cgi?id=12193&action=edit
0002-Fix-ckb_IQ-Add-ckb_IQ-to-SUPPORTED-file-Add-ckb_IQ.U.patch
My suggested changes.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 18:06:00 -0000
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--- Comment #46 from Mike FABIAN <maiku.fabian at gmail dot com> ---
LC_MONETARY
-int_curr_symbol "<U0049><U0051><U0044><U0020>"
+int_curr_symbol "IQD "
currency_symbol "<U062F><U002E><U0639>"
-mon_decimal_point "<U002E>"
-mon_thousands_sep "<U002C>"
+mon_decimal_point "."
+mon_thousands_sep ","
mon_grouping 3
positive_sign ""
-negative_sign "<U002D>"
+negative_sign "-"
int_frac_digits 3
frac_digits 3
p_cs_precedes 1
For everything which is ASCII, it is allowed (and preferred) to write
the ASCII directly and not the code points.
I.e. it is better (because more readable) to write "-" instead of "<U002D>".
I hope in future this will be allowed also for non-ASCII characters,
at the moment it is only allowed for ASCII.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 18:11:00 -0000
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--- Comment #47 from Mike FABIAN <maiku.fabian at gmail dot com> ---
LC_MESSAGES
-yesexpr "<U0628><U06D5><U06B5><U06CE>"
-noexpr "<U0646><U06D5><U062E><U06CE><U0631>"
+yesexpr "^[+1yY<U0628>]"
+noexpr "^[-0nN<U0646>]"
yesstr "<U0628><U06D5><U06B5><U06CE>"
nostr "<U0646><U06D5><U062E><U06CE><U0631>"
END LC_MESSAGES
"yesstr" and "nostr" are the words for "yes" and "no" in your language.
"yesexpr" should *not* be the same as "yesstr".
"yesexpr" should be a regular expression matching single letters
which could be typed as the response for "yes" when you get a prompt asking
something like:
"Do you want ...? (y/n)"
and when you type "y" in English, this means yes.
In *all* glibc locales we include +1yY to the "yesexpr" as long as this does
not conflict with the language of that locale.
If "y" would suggest "no" in that language we can not add it to "yesexpr" but
in all other cases we add it.
Similar ofr "noexpr".
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #48 from Mike FABIAN <maiku.fabian at gmail dot com> ---
LC_ADDRESS
postal_fmt "%z%c%T%s%b%e%r"
-country_name "Iraq"
-country_ab2 "<U0049><U0051>"
-country_ab3 "<U0049><U0052><U0051>"
-country_post "<U0049><U0052><U0051>"
+country_name "<U0639><U06CE><U0631><U0627><U0642>"
+country_ab2 "IQ"
+country_ab3 "IRQ"
+country_post "IRQ"
country_num 368
-country_car "<U0049><U0051>"
+country_car "IQ"
+lang_name "<U06A9><U0648><U0631><U062F><U06CC><U06CC>
<U0646><U0627><U0648><U06D5><U0646><U
+lang_term "ckb"
+lang_lib "ckb"
%
END LC_ADDRESS
country_name should be the name of the country in your language (Sorani), *not*
in English.
The English name is already in:
territory "Iraq"
lang_name should be the the name of your language in your language.
The English name is already in:
language "Central Kurdish"
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>From glibc-bugs-return-47048-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 13 18:19:00 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 18:19:00 -0000
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--- Comment #49 from Mike FABIAN <maiku.fabian at gmail dot com> ---
I rewrote the LC_COLLATE section to contain only the absolutely necessary
stuff. Now it looks like this:
LC_COLLATE
% The Kurdish Sorani, Bahdini, and others dialects is mainly written using a
modified (Arabic-based alphabet) with 33 letters.
% Unlike the regular Arabic alphabet, which is an abjad, kurdish is an
alphabet in which vowels are mandatory, making the script easy to read.
%
% The kurdish alphabet order is:
% in Latin: a, b, c, ç, d, e, ê, f, g, h, i, î, j, k, l, ll, m, n, o, p, q,
r, rr, s, sh, t, u, uu, v, w, x, y, z
% vowels: A, E, I, O, U, UU
%
% Copy the template from ISO/IEC 14651
copy "iso14651_t1"
reorder-after <S0631> % ر
<S0695> % Ú•
reorder-after <S0646> % Ù†
<S0648> % Ùˆ
<S06C6> % Û†
END LC_COLLATE
I.e. this sorts U+0695, U+0648, and U+06C6 differently from the default sort
order.
The default sort order comes from
copy "iso14651_t1"
You use this line to copy the default sort order and then add changes needed
for your language.
According to what you wrote in your locale, the 3 characters U+0695, U+0648,
and U+06C6 sort
differently than the default sort order for Arabic characters, all the reset
sort the same
as in the default sort order.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #50 from Mike FABIAN <maiku.fabian at gmail dot com> ---
If you do *not* use
copy "iso14651_t1"
this is bad because then almost all Unicode characters which you do not cover
by your own sort order will sort incorrectly. You want a reasonable default and
apply the changes for your language to that default.
Of course your locale should sort Kurdish Sorani correctly, but it should not
sort other characters (Cyrillic, Devanagari, ... whatever) completely silly.
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--- Comment #51 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Your locale also sorted many control characters and ASCII punctuation
characters.
I think there is no reason to deviate from the default for these characters,
therefore I removed them.
If you have a good reason why some of these need to be sorted differently for
Kurdish, please tell me.
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 18:28:00 -0000
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--- Comment #52 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Your locale sorted the Kurdish numbers at the top, i.e. before the
Western numbers. The default order (as you can see in the ckb_IQ.UTF-8.in
sorting test file in my patch) sorts these in between the Western numbers. Like
this:
0
Ù
1
Ù¡
2
Ù¢
3
Ù£
4
Ù¤
5
Ù¥
6
Ù¦
7
Ù§
8
Ù¨
9
Ù©
That is reasonably good, isn’t it?
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 18:34:00 -0000
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--- Comment #53 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Your locale also resorted all the ASCII letters to make upper case letters come
first.
I.e.
A
a
instead of
a
A
Lower case first is what comes from
copy "iso14651_t1"
When using CLDR for sorting, one can use an option
[caseFirst upper], see for example:
https://github.com/unicode-org/cldr/blob/master/common/collation/da.xml
glibc has no easy option to do that at the moment.
It is *possible* do sort A-Za-z differently in your locale *but*
if you do that you will get a weird order for all Latin characters you forget.
I.e. if you do not include äÄ in your sort order as well, they would still sort
lower case first. It is a lot of work to do this correctly for *all* Latin
characters without a convenient option like CLDR’s [caseFirst upper],
I would recommend not doing that if it is not absolutely required.
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>From glibc-bugs-return-47053-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 13 19:43:22 2020
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From: "aras.noori at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 19:43:00 -0000
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--- Comment #54 from Aras Noori <aras.noori at gmail dot com> ---
(In reply to Mike FABIAN from comment #53)
> Your locale also resorted all the ASCII letters to make upper case letters
> come first.
>
> I.e.
>
> A
> a
>
> instead of
>
> a
> A
>
> Lower case first is what comes from
>
> copy "iso14651_t1"
>
> When using CLDR for sorting, one can use an option
> [caseFirst upper], see for example:
>
> https://github.com/unicode-org/cldr/blob/master/common/collation/da.xml
>
> glibc has no easy option to do that at the moment.
>
> It is *possible* do sort A-Za-z differently in your locale *but*
> if you do that you will get a weird order for all Latin characters you
> forget.
> I.e. if you do not include äÄ in your sort order as well, they would still
> sort
> lower case first. It is a lot of work to do this correctly for *all* Latin
> characters without a convenient option like CLDR’s [caseFirst upper],
> I would recommend not doing that if it is not absolutely required.
Hello Fabian,
thanks to your suggestions and notice. You are right with sorting (aA) as well
with Numbers, this should be modified.
The kurdish alphabet order is:
ئ
U+0626
ا
U+0627
ب
U+0628
Ù¾
U+067E
ت
U+062A
ج
U+062C
Ú†
U+0686
Ø
U+062D
Ø®
U+062E
د
U+062F
ر
U+0631
Ú•
U+0695
ز
U+0632
Ú˜
U+0698
س
U+0633
Ø´
U+0634
ع
U+0639
غ
U+063A
Ù
U+0641
Ú¤
U+06A4
Ù‚
U+0642
Ú©
U+06A9
Ú¯
U+06AF
Ù„
U+0644
Úµ
U+06B5
Ù…
U+0645
Ù†
U+0646
Ùˆ
U+0648
Û†
U+06C6
Ú¾
U+0647
Û•
U+06D5
ی
U+06CC
ÛŽ
U+06CE
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To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 20:20:00 -0000
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--- Comment #55 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
thank you mike you is really appreciated i have pointed all my answers
according to your question and suggestion to our locale as follow:
1. For positive sign and negative i agree with you let it be + and - .
2. For regular expression i didn't know how to type it in my language hope to
hekp me solve this.
we have "ب" for Y in English and "ن" for N in English .
3.You right we type Iraq in Kurdish(Sorani) now changed.
4.We have Kurdish alphabet as Aras Noori wrote before my reply and i look at
iso14651_t1 now all characters which is used in Kurdish are exist, these
characters that you did add them are from Arabic language not Kurdish.
Can you send the .dat file with your last changes?
Best Regards
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #56 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
Thank you mike you your help is really appreciated
I have pointed all my answers according to your question and suggestion to our
locale as follow:
1. For positive sign and negative i agree with you let it be + and - .
2. For regular expression i didn't know how to type it in my language hope to
hekp me solve this.
we have "ب" for Y in English and "ن" for N in English .
3.You right we type Iraq in Kurdish(Sorani) now changed.
4.We have Kurdish alphabet as Aras Noori wrote before my reply and i look at
iso14651_t1 now all characters which is used in Kurdish are exist, these
characters that you did add them are from Arabic language not Kurdish.
Can you send the .dat file with your last changes?
Best Regards
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #57 from Mike FABIAN <maiku.fabian at gmail dot com> ---
> thanks to your suggestions and notice. You are right with sorting (aA) as
> well with Numbers, this should be modified.
So sorting
a
A
and
0
Ù
1
Ù¡
...
is OK? I hope so ...
> The kurdish alphabet order is:
To achieve that order, this is enough:
copy "iso14651_t1"
reorder-after <S0631> % ر
<S0695> % Ú•
reorder-after <S0646> % Ù†
<S0648> % Ùˆ
<S06C6> % Û†
I added the test file ckb_IQ.UTF-8.in in my patch, this file is sorted
using the rules of my patched ckb_IQ locale, the sorted result should
be the same as the original file, otherwise the test fails.
As the test passes, the above collation rules work and achieve the
order as in the ckb_IQ.UTF-8.in test file.
I’ll paste this test file here again for your easy refererence:
0
Ù
1
Ù¡
2
Ù¢
3
Ù£
4
Ù¤
5
Ù¥
6
Ù¦
7
Ù§
8
Ù¨
9
Ù©
a
A
b
B
c
C
d
D
e
E
f
F
g
G
h
H
i
I
j
J
k
K
l
L
m
M
n
N
o
O
p
P
q
Q
r
R
s
S
t
T
u
U
v
V
w
W
x
X
y
Y
z
Z
ئ
ا
ب
Ù¾
ت
ج
Ú†
Ø
Ø®
د
ر
Ú•
ز
Ú˜
س
Ø´
ع
غ
Ù
Ú¤
Ù‚
Ú©
Ú¯
Ù„
Úµ
Ù…
Ù†
Ùˆ
Û†
Ù‡
Û•
ی
ÛŽ
Other characters not in this test file are sorted according to the defaults
from
copy "iso14651_t1"
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--- Comment #58 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Jwtiyar Nariman from comment #56)
> Thank you mike you your help is really appreciated
> I have pointed all my answers according to your question and suggestion to
> our locale as follow:
>
> 1. For positive sign and negative i agree with you let it be + and - .
Your original locale had the positive sign empty.
Probably a mistake. So I’ll make it + now.
> 2. For regular expression i didn't know how to type it in my language hope
> to hekp me solve this.
> we have "ب" for Y in English and "ن" for N in English .
That is what I used:
yesexpr "^[+1yY<U0628>]"
noexpr "^[-0nN<U0646>]"
So these regular expressions except +, 1, y, Y, and ب as a yes answer.
And -, 0, n, N, and Ù† as a no answer.
> 3.You right we type Iraq in Kurdish(Sorani) now changed.
> 4.We have Kurdish alphabet as Aras Noori wrote before my reply and i look at
> iso14651_t1 now all characters which is used in Kurdish are exist, these
> characters that you did add them are from Arabic language not Kurdish.
I don’t understand. Most of these characters are used both in Arabic *and*
Kurdish.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #59 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12194
--> https://sourceware.org/bugzilla/attachment.cgi?id=12194&action=edit
ckb_IQ
> Can you send the .dat file with your last changes?
Here is the latest file with the changes I made.
I just added the + as the positive_sign.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
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----------------------------------------------------------------------------
Attachment #12192|0 |1
is obsolete| |
--- Comment #60 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12195
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0001-Add-ckb_IQ-locale.patch
Updated patch.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #61 from Mike FABIAN <maiku.fabian at gmail dot com> ---
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0002-Fix-ckb_IQ-Add-ckb_IQ-to-SUPPORTED-file-Add-ckb_IQ.U.patch
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #62 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
(In reply to Mike FABIAN from comment #57)
> > thanks to your suggestions and notice. You are right with sorting (aA) as
> > well with Numbers, this should be modified.
>
> So sorting
>
> a
> A
>
> and
>
> 0
> Ù
> 1
> Ù¡
> ...
>
> is OK? I hope so ...
>
> > The kurdish alphabet order is:
>
> To achieve that order, this is enough:
>
> copy "iso14651_t1"
>
> reorder-after <S0631> % ر
> <S0695> % Ú•
>
> reorder-after <S0646> % Ù†
> <S0648> % Ùˆ
> <S06C6> % Û†
>
> I added the test file ckb_IQ.UTF-8.in in my patch, this file is sorted
> using the rules of my patched ckb_IQ locale, the sorted result should
> be the same as the original file, otherwise the test fails.
>
> As the test passes, the above collation rules work and achieve the
> order as in the ckb_IQ.UTF-8.in test file.
>
> I’ll paste this test file here again for your easy refererence:
>
> 0
> Ù
> 1
> Ù¡
> 2
> Ù¢
> 3
> Ù£
> 4
> Ù¤
> 5
> Ù¥
> 6
> Ù¦
> 7
> Ù§
> 8
> Ù¨
> 9
> Ù©
> a
> A
> b
> B
> c
> C
> d
> D
> e
> E
> f
> F
> g
> G
> h
> H
> i
> I
> j
> J
> k
> K
> l
> L
> m
> M
> n
> N
> o
> O
> p
> P
> q
> Q
> r
> R
> s
> S
> t
> T
> u
> U
> v
> V
> w
> W
> x
> X
> y
> Y
> z
> Z
> ئ
> ا
> ب
> Ù¾
> ت
> ج
> Ú†
> Ø
> Ø®
> د
> ر
> Ú•
> ز
> Ú˜
> س
> Ø´
> ع
> غ
> Ù
> Ú¤
> Ù‚
> Ú©
> Ú¯
> Ù„
> Úµ
> Ù…
> Ù†
> Ùˆ
> Û†
> Ù‡
> Û•
> ی
> ÛŽ
>
> Other characters not in this test file are sorted according to the defaults
> from
>
> copy "iso14651_t1"
Sorting is good now, but adding these
reorder-after <S0631> % ر
> <S0695> % Ú•
>
> reorder-after <S0646> % Ù†
> <S0648> % Ùˆ
> <S06C6> % Û†
iam not understanding because for example this " <S0695> % Ú• " how you order
it?
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 13 Jan 2020 21:36:00 -0000
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--- Comment #63 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Jwtiyar Nariman from comment #62)
> > Other characters not in this test file are sorted according to the defaults
> > from
> >
> > copy "iso14651_t1"
>
> Sorting is good now, but adding these
> reorder-after <S0631> % ر
> > <S0695> % Ú•
> >
> > reorder-after <S0646> % Ù†
> > <S0648> % Ùˆ
> > <S06C6> % Û†
> iam not understanding because for example this " <S0695> % Ú• " how you
> order it?
copy "iso14651_t1"
contains
copy "iso14651_t1_common"
and some modifications which affect only Chinese and Japanese.
So we look into the iso14651_t1_common file to see what the default sort order
is.
We find for example:
...
<S0631> % ARABIC LETTER REH
<S0632> % ARABIC LETTER ZAIN
<S0691> % ARABIC LETTER RREH
<S0692> % ARABIC LETTER REH WITH SMALL V
<S0693> % ARABIC LETTER REH WITH RING
<S0694> % ARABIC LETTER REH WITH DOT BELOW
<S0695> % ARABIC LETTER REH WITH SMALL V BELOW
<S0696> % ARABIC LETTER REH WITH DOT BELOW AND DOT ABOVE
...
Looking at this you see that Ú• U+0695 ARABIC LETTER REH WITH SMALL V BELOW
is sorted right after Ú” U+0694 ARABIC LETTER REH WITH DOT BELOW by default.
That is not what you want for Kurdish. For Kurdish, you want
Ú• U+0695 ARABIC LETTER REH WITH SMALL V BELOW to be sorted right after
ر U+0631 ARABIC LETTER REH.
This is achieved by the rule:
reorder-after <S0631> % ر
<S0695> % Ú•
Which removes U+0695 from its default position in the sort order
and inserts it again after U+0631.
reorder-after <S0646> % Ù†
<S0648> % Ùˆ
<S06C6> % Û†
does a similar thing to change the sorting of U+0648 and U+06C6.
To find out which of these rules I need, I created the ckb_IQ.UTF-8.in
test file first and wrote the Kurdish characters in the order you wanted
into that file.
Then I ran a test sort using a ckb_IQ locale which had *only*
LC_COLLATE
copy "iso14651_t1"
END LC_COLLATE
and *nothing* else.
The test sort showed that only U+0695, U+0648, and U+06C6 were sorted
incorrectly.
All other characters from your list of Kurdish characters were sorted correctly
already. So I needed only to add rules to fix the sort order for these 3
characters.
You can see the same by just reading the iso14651_t1_common and find out which
of the Kurdish characters are already in the correct order in that file and
which are not.
You have to do nothing for the characters which are already in correct order.
For the characters which are in a wrong position in iso14651_t1_common, you add
rules like
reorder-after <... collating-symbol after which to reorder ...>
<... the collating-symbol which should be reordered ...>
I found writing the test file and checking which characters are sorted
wrongly by default easier than staring at iso14651_t1_common. And it
is a good idea to have the test file anyway to make sure that the
Kurdish sort order always stays correct when something is changed in
glibc. If we have the test file, we will notice when some change causes a
problem.
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From: "jiangning.liu at amperecomputing dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/25382] New: __pow_finite and similar symbols missing in libm.a
Date: Tue, 14 Jan 2020 03:57:00 -0000
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Bug ID: 25382
Summary: __pow_finite and similar symbols missing in libm.a
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: jiangning.liu at amperecomputing dot com
Target Milestone: ---
Commit
https://github.com/bminor/glibc/commit/220622dde5704c95a100c2792a280f18f3deba73
caused problems.
1) Before this commit, we have,
$ readelf -a libm.a | grep pow_finite
29: 0000000000000000 1100 FUNC GLOBAL DEFAULT 1 __pow_finite
2) After this commit, we have
$ readelf -a libm.a | grep pow_finite
$ /* No symbol any longer */
This problem is causing static linking broken.
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Subject: [Bug math/25382] __pow_finite and similar symbols missing in libm.a
Date: Tue, 14 Jan 2020 03:58:00 -0000
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--- Comment #1 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
Link time failure message is like,
pp.o: In function `Perl_pp_sin':
pp.c:(.text+0xef88): undefined reference to `__log_finite'
pp.c:(.text+0xefb0): undefined reference to `__exp_finite'
pp.o: In function `Perl_pp_atan2':
pp.c:(.text+0xf0ec): undefined reference to `__atan2_finite'
pp.o: In function `Perl_pp_pow':
pp.c:(.text+0x15574): undefined reference to `__pow_finite'
pp.c:(.text+0x15780): undefined reference to `__pow_finite'
pp.o: In function `Perl_pp_modulo':
pp.c:(.text+0x21098): undefined reference to `__fmod_finite'
toke.o: In function `Perl_scan_num':
toke.c:(.text+0x4ea4): undefined reference to `__exp2_finite'
collect2: error: ld returned 1 exit status
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>From glibc-bugs-return-47066-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 14 05:36:20 2020
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From: "jwtiyar at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Tue, 14 Jan 2020 05:36:00 -0000
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--- Comment #64 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
Thank you very much dear mike i got it, you made a great job, thanks again.
So now every thing is ready to be accepted in glibc.
Best Regards (In reply to Mike FABIAN from comment #63)
> (In reply to Jwtiyar Nariman from comment #62)
>
> > > Other characters not in this test file are sorted according to the defaults
> > > from
> > >
> > > copy "iso14651_t1"
> >
> > Sorting is good now, but adding these
> > reorder-after <S0631> % ر
> > > <S0695> % Ú•
> > >
> > > reorder-after <S0646> % Ù†
> > > <S0648> % Ùˆ
> > > <S06C6> % Û†
> > iam not understanding because for example this " <S0695> % Ú• " how you
> > order it?
>
> copy "iso14651_t1"
>
> contains
>
> copy "iso14651_t1_common"
>
> and some modifications which affect only Chinese and Japanese.
>
> So we look into the iso14651_t1_common file to see what the default sort
> order is.
>
> We find for example:
>
> ...
> <S0631> % ARABIC LETTER REH
> <S0632> % ARABIC LETTER ZAIN
> <S0691> % ARABIC LETTER RREH
> <S0692> % ARABIC LETTER REH WITH SMALL V
> <S0693> % ARABIC LETTER REH WITH RING
> <S0694> % ARABIC LETTER REH WITH DOT BELOW
> <S0695> % ARABIC LETTER REH WITH SMALL V BELOW
> <S0696> % ARABIC LETTER REH WITH DOT BELOW AND DOT ABOVE
> ...
>
> Looking at this you see that Ú• U+0695 ARABIC LETTER REH WITH SMALL V BELOW
> is sorted right after Ú” U+0694 ARABIC LETTER REH WITH DOT BELOW by default.
> That is not what you want for Kurdish. For Kurdish, you want
> Ú• U+0695 ARABIC LETTER REH WITH SMALL V BELOW to be sorted right after
> ر U+0631 ARABIC LETTER REH.
>
> This is achieved by the rule:
>
> reorder-after <S0631> % ر
> <S0695> % Ú•
>
> Which removes U+0695 from its default position in the sort order
> and inserts it again after U+0631.
>
> reorder-after <S0646> % Ù†
> <S0648> % Ùˆ
> <S06C6> % Û†
>
> does a similar thing to change the sorting of U+0648 and U+06C6.
>
> To find out which of these rules I need, I created the ckb_IQ.UTF-8.in
> test file first and wrote the Kurdish characters in the order you wanted
> into that file.
>
> Then I ran a test sort using a ckb_IQ locale which had *only*
>
> LC_COLLATE
> copy "iso14651_t1"
> END LC_COLLATE
>
> and *nothing* else.
>
> The test sort showed that only U+0695, U+0648, and U+06C6 were sorted
> incorrectly.
> All other characters from your list of Kurdish characters were sorted
> correctly
> already. So I needed only to add rules to fix the sort order for these 3
> characters.
>
> You can see the same by just reading the iso14651_t1_common and find out
> which
> of the Kurdish characters are already in the correct order in that file and
> which are not.
> You have to do nothing for the characters which are already in correct order.
> For the characters which are in a wrong position in iso14651_t1_common, you
> add
> rules like
>
> reorder-after <... collating-symbol after which to reorder ...>
> <... the collating-symbol which should be reordered ...>
>
> I found writing the test file and checking which characters are sorted
> wrongly by default easier than staring at iso14651_t1_common. And it
> is a good idea to have the test file anyway to make sure that the
> Kurdish sort order always stays correct when something is changed in
> glibc. If we have the test file, we will notice when some change causes a
> problem.
Thank you very much dear mike i got it, you made a great job, thanks again.
So now every thing is ready to be accepted in glibc.
Best Regards
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>From glibc-bugs-return-47067-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 14 09:28:56 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Tue, 14 Jan 2020 09:28:00 -0000
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--- Comment #65 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Posted to the mailing list for review:
https://sourceware.org/ml/libc-alpha/2020-01/msg00255.html
https://sourceware.org/ml/libc-alpha/2020-01/msg00256.html
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To: glibc-bugs@sourceware.org
Subject: [Bug math/25382] __pow_finite and similar symbols missing in libm.a
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
That's correct. The functions have been moved to compat and are no longer
available for linking.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #66 from Mike FABIAN <maiku.fabian at gmail dot com> ---
https://github.com/mike-fabian/langtable/releases/tag/0.0.51
I added ckb_IQ.UTF-8 to langtable to make it usuable for installation on
Fedora as soon as it is included in glibc.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #67 from Mike FABIAN <maiku.fabian at gmail dot com> ---
By the way, how do you input Kurdish Sorani? Do you use a keyboard layout? Or
do you need an input method?
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--- Comment #68 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
(In reply to Mike FABIAN from comment #67)
> By the way, how do you input Kurdish Sorani? Do you use a keyboard layout?
> Or do you need an input method?
Yes we have and its available.
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>From glibc-bugs-return-47072-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 14 11:31:51 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25383] New: where_is_shmfs/__shm_directory/SHM_GET_NAME may cause shm_open to pick wrong directory
Date: Tue, 14 Jan 2020 11:31:00 -0000
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Bug ID: 25383
Summary: where_is_shmfs/__shm_directory/SHM_GET_NAME may cause
shm_open to pick wrong directory
Product: glibc
Version: 2.32
Status: NEW
Severity: normal
Priority: P2
Component: libc
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Reporter: fweimer at redhat dot com
CC: drepper.fsp at gmail dot com
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If /dev/shm does not exist, where_is_shmfs picks an arbitrary tmpfs mount point
from /proc/mounts. It does not even check if the permissions are 1777 as
expected. This wrong decision is cached and used even if /dev/shm becomes
available later.
I think we should hard-code /dev/shm instead.
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>From glibc-bugs-return-47073-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 14 12:44:35 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Tue, 14 Jan 2020 12:44:00 -0000
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--- Comment #69 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
(In reply to Mike FABIAN from comment #66)
> https://github.com/mike-fabian/langtable/releases/tag/0.0.51
>
> I added ckb_IQ.UTF-8 to langtable to make it usuable for installation on
> Fedora as soon as it is included in glibc.
Our focus now is on Ubuntu because too much users in Ubuntu we have.
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>From glibc-bugs-return-47074-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 14 16:58:11 2020
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Subject: [Bug math/25382] __pow_finite and similar symbols missing in libm.a
Date: Tue, 14 Jan 2020 16:58:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
It's likely that recompiling pp.o against current glibc will fix the link
error.
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>From glibc-bugs-return-47075-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 03:26:06 2020
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Subject: [Bug time/25387] New: year 2038 bug for localtime with leap seconds and DST
Date: Wed, 15 Jan 2020 03:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25387
Bug ID: 25387
Summary: year 2038 bug for localtime with leap seconds and DST
Product: glibc
Version: 2.30
Status: NEW
Severity: normal
Priority: P2
Component: time
Assignee: unassigned at sourceware dot org
Reporter: eggert at cs dot ucla.edu
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Created attachment 12209
--> https://sourceware.org/bugzilla/attachment.cgi?id=12209&action=edit
exercise the Y2038 leap second bug
glibc localtime and related functions mishandle daylight saving time
transitions calculated from the TZ string of a TZif file, if the file has leap
seconds. One way to see the bug is to run the shell command:
zdump -i -c 2037,2039 right/America/Los_Angeles
on Fedora 31 x86-64. The output is:
TZ="right/America/Los_Angeles"
- - -08 PST
2037-03-08 03 -07 PDT 1
2037-11-01 01 -08 PST
2038-03-14 02:59:33 -07 PDT 1
2038-11-07 00:59:33 -08 PST
The transitions are correct through the year 2037, but starting in 2038 they
are off by 27 seconds (the number of leap seconds from 1972 until now).
To see the bug in glibc directly, compile and run the attached program
localtime-bug.c. The output is:
2152173599 - Sun Mar 14 01:59:32 2038
2152173600 - Sun Mar 14 02:59:33 2038
showing that localtime thinks the clock jumps forward at 01:59:33, whereas it
should jump forward at 02:00.
A similar bug appears in tzcode 2019c and earlier. I proposed a fix here:
https://mm.icann.org/pipermail/tz/2020-January/028792.html
and something like this fix should appear in the next tzdb release.
It might also be helpful for glibc to sync to the zic.c in tzdb 2020a (whenever
2020a comes out), as this should cause zic to omit the problematic transitions
from the installed TZif files. See:
https://mm.icann.org/pipermail/tz/2020-January/028794.html
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>From glibc-bugs-return-47077-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 05:49:54 2020
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Subject: [Bug libc/23960] [2.28 Regression]: New getdents{64} implementation breaks qemu-user
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--- Comment #55 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
Created attachment 12211
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getdents emulation for qemu
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>From glibc-bugs-return-47076-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 05:49:31 2020
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Subject: [Bug libc/23960] [2.28 Regression]: New getdents{64} implementation breaks qemu-user
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--- Comment #54 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
Created attachment 12210
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getdents emulation for glibc
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>From glibc-bugs-return-47078-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 05:54:04 2020
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Subject: [Bug libc/23960] [2.28 Regression]: New getdents{64} implementation breaks qemu-user
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--- Comment #56 from Aladjev Andrew <aladjev.andrew at gmail dot com> ---
I've created 2 new patches: first one is using 0xffff (free 16 bit syscall
number) for getdents emulation in glibc and second one is redirecting this
syscall to x86 x32 kernel syscall.
If you have "CONFIG_X86_X32=y" and "qemu_binfmt" registered in your host kernel
- than you will be able to build complete image using qemu user. I've tested it
using "arm-unknown-linux-gnueabi" and "mips-unknown-linux-gnu", works perfect.
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>From glibc-bugs-return-47079-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 09:05:39 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #12195|0 |1
is obsolete| |
--- Comment #70 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12212
--> https://sourceware.org/bugzilla/attachment.cgi?id=12212&action=edit
0001-Add-new-locale-ckb_IQ-Kurdish-Sorani-spoken-in-Iraq-.patch
git log message changed according to Rafał Lużyński’s review.
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>From glibc-bugs-return-47080-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 09:06:49 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
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----------------------------------------------------------------------------
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is obsolete| |
--- Comment #71 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12213
--> https://sourceware.org/bugzilla/attachment.cgi?id=12213&action=edit
0002-Fix-ckb_IQ-BZ-9809.patch
Fixed according to Rafał Lużyński’s review.
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>From glibc-bugs-return-47081-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 09:12:45 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #72 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Mike FABIAN from comment #71)
> Created attachment 12213 [details]
> 0002-Fix-ckb_IQ-BZ-9809.patch
>
> Fixed according to Rafał Lużyński’s review.
Changed to this according to Rafał Lużyński’s suggestion:
d_t_fmt "%A %d %b %Y, %I:%M:%S %p"
date_fmt "%A %d %B %Y, %Z %I:%M:%S %p"
All otherchanges are just whitespace and formatting.
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>From glibc-bugs-return-47082-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 09:13:32 2020
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #73 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Rafał Lużyński’s review:
https://sourceware.org/ml/libc-alpha/2020-01/msg00281.html
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #74 from Aras Noori <aras.noori at gmail dot com> ---
(In reply to Mike FABIAN from comment #73)
> Rafał Lużyński’s review:
>
> https://sourceware.org/ml/libc-alpha/2020-01/msg00281.html
Thanks to your efforts, the locale is now ripe to join to the lib.
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>From glibc-bugs-return-47084-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 15:57:43 2020
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>From glibc-bugs-return-47085-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 15:59:05 2020
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--- Comment #75 from Mike FABIAN <maiku.fabian at gmail dot com> ---
We have to wait until the release of glibc 2.31:
https://www.gnu.org/software/libc/
The current development version of glibc 2.31, releasing on or around February
1st, 2020.
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>From glibc-bugs-return-47086-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 15 23:58:19 2020
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Subject: [Bug dynamic-link/25396] New: [2.31 Regression] FAIL: nss/test-netdb
Date: Wed, 15 Jan 2020 23:58:00 -0000
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Bug ID: 25396
Summary: [2.31 Regression] FAIL: nss/test-netdb
Product: glibc
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On Fedora 31, most of shared libraries are CET enabled. But
/lib64/libnss_myhostname.so.2 isn't one of them. It depends on:
linux-vdso.so.1 (0x00007ffc29b44000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f6859f61000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f6859f3f000)
libc.so.6 => /lib64/libc.so.6 (0x00007f6859d76000)
/lib64/ld-linux-x86-64.so.2 (0x00007f6859fb9000)
On CET machine, when nss/test-netdb tries to dlopen
/lib64/libnss_myhostname.so.2, it sets GL(dl_initfirst) to
libpthread.so.0:
Old value = (struct link_map *) 0x0
New value = (struct link_map *) 0x40e8f0
0x00007ffff7fd940a in _dl_map_object_from_fd (
name=name@entry=0x7ffff75d7ad3 "libpthread.so.0",
origname=origname@entry=0x0, fd=-1, fbp=fbp@entry=0x7ffeffffbb20,
realname=<optimized out>, loader=loader@entry=0x40df00,
l_type=<optimized out>, mode=<optimized out>, stack_endp=<optimized out>,
nsid=<optimized out>) at dl-load.c:1354
1354 GL(dl_initfirst) = l;
(gdb)
When for some reason, dl_cet_check failed and called _dl_signal_error,
__GI__dl_catch_exception called _dl_close_worker which unloaded
libpthread.so.0:
_int_free (av=0x7ffff77c8b80 <main_arena>, p=0x40e8e0,
have_lock=<optimized out>) at malloc.c:4359
4359 if (!in_smallbin_range(size))
(gdb) bt
#0 _int_free (av=0x7ffff77c8b80 <main_arena>, p=0x40e8e0,
have_lock=<optimized out>) at malloc.c:4359
#1 0x00007ffff7fe74bb in _dl_close_worker (force=<optimized out>,
map=<optimized out>) at dl-close.c:759
#2 _dl_close_worker (map=<optimized out>, force=force@entry=true)
at dl-close.c:135
#3 0x00007ffff7fe5b08 in _dl_open (file=<optimized out>,
mode=<optimized out>, caller_dlopen=0x7ffff772a4a1 <nss_load_library+241>,
nsid=-2, argc=2, argv=<optimized out>, env=0x7ffeffffcde0) at dl-open.c:874
#4 0x00007ffff7740ef1 in do_dlopen (ptr=ptr@entry=0x7ffeffffc970)
at dl-libc.c:96
#5 0x00007ffff7741971 in __GI__dl_catch_exception (
exception=exception@entry=0x7ffeffffc8f0,
operate=operate@entry=0x7ffff7740eb0 <do_dlopen>,
args=args@entry=0x7ffeffffc970) at dl-error-skeleton.c:208
#6 0x00007ffff7741a23 in __GI__dl_catch_error (
objname=objname@entry=0x7ffeffffc950,
errstring=errstring@entry=0x7ffeffffc958,
mallocedp=mallocedp@entry=0x7ffeffffc94f,
operate=operate@entry=0x7ffff7740eb0 <do_dlopen>,
args=args@entry=0x7ffeffffc970) at dl-error-skeleton.c:227
#7 0x00007ffff7740fe7 in dlerror_run (
operate=operate@entry=0x7ffff7740eb0 <do_dlopen>,
Then I got
Program received signal SIGSEGV, Segmentation fault.
call_init (l=0x40e8f0, argc=argc@entry=2, argv=argv@entry=0x7ffeffffcdc8,
env=env@entry=0x7ffeffffcde0) at dl-init.c:39
39 if (__builtin_expect (l->l_name[0], 'a') == '\0'
(gdb) p *l
$34 = {l_addr = 7738135660173684588,
l_name = 0x302e302e37323100 <error: Cannot access memory at address
0x302e302e37323100>, l_ld = 0xd5d5d5d50000302e, l_next = 0x0,
l_prev = 0xd5d5d5d5d5d5d5d5, l_real = 0xd5d5d5d5d5d5d5d5,
l_ns = -3038287259199220267, l_libname = 0xd5d5d5d5d5d5d5d5, l_info = {
0xd5d5d5d5d5d5d5d5 <repeats 77 times>}, l_phdr = 0xd5d5d5d5d5d5d5d5,
l_entry = 15408456814510331349, l_phnum = 54741, l_ldnum = 54741,
l_searchlist = {r_list = 0xd5d5d5d5d5d5d5d5, r_nlist = 3587560917},
l_symbolic_searchlist = {r_list = 0xd5d5d5d5d5d5d5d5, r_nlist = 3587560917},
l_loader = 0xd5d5d5d5d5d5d5d5, l_versions = 0xd5d5d5d5d5d5d5d5,
l_nversions = 3587560917, l_nbuckets = 3587560917,
l_gnu_bitmask_idxbits = 3587560917, l_gnu_shift = 3587560917,
l_gnu_bitmask = 0xd5d5d5d5d5d5d5d5, {l_gnu_buckets = 0xd5d5d5d5d5d5d5d5,
l_chain = 0xd5d5d5d5d5d5d5d5}, {l_gnu_chain_zero = 0xd5d5d5d5d5d5d5d5,
l_buckets = 0xd5d5d5d5d5d5d5d5}, l_direct_opencount = 3587560917,
l_type = lt_library, l_relocated = 1, l_init_called = 1, l_global = 1,
l_reserved = 2, l_phdr_allocated = 1, l_soname_added = 1, l_faked = 0,
l_need_tls_init = 1, l_auditing = 0, l_audit_any_plt = 1, l_removed = 0,
l_contiguous = 1, l_symbolic_in_local_scope = 1, l_free_initfini = 1,
l_nodelete_active = 213, l_nodelete_pending = 213, l_cet = 5,
l_rpath_dirs = {dirs = 0xd5d5d5d5d5d5d5d5, malloced = -707406379},
l_reloc_result = 0xd5d5d5d5d5d5d5d5, l_versyms = 0xd5d5d5d5d5d5d5d5,
l_origin = 0xd5d5d5d5d5d5d5d5 <error: Cannot access memory at address
0xd5d5d5d5d5d5d5d5>, l_map_start = 15408456814510331349,
l_map_end = 15408456814510331349, l_text_end = 15408456814510331349,
l_scope_mem = {0xd5d5d5d5d5d5d5d5, 0xd5d5d5d5d5d5d5d5, 0xd5d5d5d5d5d5d5d5,
0xd5d5d5d5d5d5d5d5}, l_scope_max = 15408456814510331349,
l_scope = 0xd5d5d5d5d5d5d5d5, l_local_scope = {0xd5d5d5d5d5d5d5d5,
0xd5d5d5d5d5d5d5d5}, l_file_id = {dev = 15408456814510331349,
ino = 15408456814510331349}, l_runpath_dirs = {dirs = 0xd5d5d5d5d5d5d5d5,
malloced = -707406379}, l_initfini = 0xd5d5d5d5d5d5d5d5,
l_reldeps = 0xd5d5d5d5d5d5d5d5, l_reldepsmax = 3587560917,
l_used = 3587560917, l_feature_1 = 3587560917, l_flags_1 = 3587560917,
l_flags = 3587560917, l_idx = -707406379, l_mach = {
plt = 15408456814510331349, gotplt = 15408456814510331349,
tlsdesc_table = 0x2a2a2a2a2a2a2a2a}, l_lookup_cache = {sym = 0x21,
type_class = 4255008, value = 0x40ed40, ret = 0x40ed80},
l_tls_initimage = 0x21, l_tls_initimage_size = 140737345313970,
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>From glibc-bugs-return-47087-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 00:02:24 2020
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Subject: [Bug dynamic-link/25396] [2.31 Regression] FAIL: nss/test-netdb
Date: Thu, 16 Jan 2020 00:02:00 -0000
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Program received signal SIGSEGV, Segmentation fault.
call_init (l=0x40e8f0, argc=argc@entry=2, argv=argv@entry=0x7ffeffffcdc8,
env=env@entry=0x7ffeffffcde0) at dl-init.c:39
39 if (__builtin_expect (l->l_name[0], 'a') == '\0'
(gdb) bt
#0 call_init (l=0x40e8f0, argc=argc@entry=2, argv=argv@entry=0x7ffeffffcdc8,
env=env@entry=0x7ffeffffcde0) at dl-init.c:39
#1 0x00007ffff7fe22c6 in call_init (env=0x7ffeffffcde0, argv=0x7ffeffffcdc8,
argc=2, l=<optimized out>) at dl-init.c:86
#2 _dl_init (main_map=0x40fca0, argc=2, argv=0x7ffeffffcdc8,
env=0x7ffeffffcde0) at dl-init.c:86
#3 0x00007ffff77419bd in __GI__dl_catch_exception (exception=<optimized out>,
operate=<optimized out>, args=<optimized out>) at dl-error-skeleton.c:182
#4 0x00007ffff7fe6198 in dl_open_worker (a=a@entry=0x7ffeffffc7e0)
at dl-open.c:758
#5 0x00007ffff7741971 in __GI__dl_catch_exception (exception=<optimized out>,
operate=<optimized out>, args=<optimized out>) at dl-error-skeleton.c:208
#6 0x00007ffff7fe5a1e in _dl_open (file=0x7ffeffffca50 "libnss_sss.so.2",
mode=-2147483646, caller_dlopen=0x7ffff772a4a1 <nss_load_library+241>,
nsid=-2, argc=2, argv=<optimized out>, env=0x7ffeffffcde0) at dl-open.c:837
#7 0x00007ffff7740ef1 in do_dlopen (ptr=ptr@entry=0x7ffeffffca20)
at dl-libc.c:96
#8 0x00007ffff7741971 in __GI__dl_catch_exception (
exception=exception@entry=0x7ffeffffc9a0,
operate=operate@entry=0x7ffff7740eb0 <do_dlopen>,
args=args@entry=0x7ffeffffca20) at dl-error-skeleton.c:208
#9 0x00007ffff7741a23 in __GI__dl_catch_error (
objname=objname@entry=0x7ffeffffca00,
errstring=errstring@entry=0x7ffeffffca08,
mallocedp=mallocedp@entry=0x7ffeffffc9ff,
operate=operate@entry=0x7ffff7740eb0 <do_dlopen>,
args=args@entry=0x7ffeffffca20) at dl-error-skeleton.c:227
#10 0x00007ffff7740fe7 in dlerror_run (
operate=operate@entry=0x7ffff7740eb0 <do_dlopen>,
args=args@entry=0x7ffeffffca20) at dl-libc.c:46
#11 0x00007ffff774105a in __GI___libc_dlopen_mode (
name=name@entry=0x7ffeffffca50 "libnss_sss.so.2",
mode=mode@entry=-2147483646) at dl-libc.c:195
#12 0x00007ffff772a4a1 in nss_load_library (ni=ni@entry=0x409d90)
at nsswitch.c:359
#13 0x00007ffff772acd9 in __GI___nss_lookup_function (ni=0x409d90,
fct_name=<optimized out>, fct_name@entry=0x7ffff7795d0b "getservbyname_r")
at nsswitch.c:456
--Type <RET> for more, q to quit, c to continue without paging--q
Quit
(gdb) f 1
#1 0x00007ffff7fe22c6 in call_init (env=0x7ffeffffcde0, argv=0x7ffeffffcdc8,
argc=2, l=<optimized out>) at dl-init.c:86
86 call_init (GL(dl_initfirst), argc, argv, env);
(gdb)
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>From glibc-bugs-return-47088-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 01:46:04 2020
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Subject: [Bug dynamic-link/25396] [2.31 Regression] FAIL: nss/test-netdb
Date: Thu, 16 Jan 2020 01:46:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com,
| |fweimer at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Florian,
Do you think this might have to do with the NODELETE reordering?
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>From glibc-bugs-return-47089-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 03:43:53 2020
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Subject: [Bug dynamic-link/25396] [2.31 Regression] FAIL: nss/test-netdb
Date: Thu, 16 Jan 2020 03:43:00 -0000
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
There is
/* Remember whether this object must be initialized first. */
if (l->l_flags_1 & DF_1_INITFIRST)
GL(dl_initfirst) = l;
libpthread.so.0 has
0x000000006ffffffb (FLAGS_1) Flags: NOW NODELETE INITFIRST
_dl_close_worker unloaded libpthread.so.0 which left GL(dl_initfirst)
unchanged. This patch:
diff --git a/elf/dl-close.c b/elf/dl-close.c
index 104c299209..2d426d8737 100644
--- a/elf/dl-close.c
+++ b/elf/dl-close.c
@@ -756,6 +756,9 @@ _dl_close_worker (struct link_map *map, bool force)
if (imap->l_runpath_dirs.dirs != (void *) -1)
free (imap->l_runpath_dirs.dirs);
+ if (imap == GL(dl_initfirst))
+ GL(dl_initfirst) = NULL;
+
free (imap);
}
}
seems to work.
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>From glibc-bugs-return-47091-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 04:34:46 2020
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Subject: [Bug dynamic-link/25397] Legacy bitmap isn't freed when shadow stack is enabled
Date: Thu, 16 Jan 2020 04:34:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Legacy bitmap isn't freed |Legacy bitmap isn't freed
|when |when shadow stack is
| |enabled
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>From glibc-bugs-return-47090-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 04:34:24 2020
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Subject: [Bug dynamic-link/25397] New: Legacy bitmap isn't freed when
Date: Thu, 16 Jan 2020 04:34:00 -0000
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Bug ID: 25397
Summary: Legacy bitmap isn't freed when
Product: glibc
Version: 2.31
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Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
When CET is enabled, during dlopen, dl_cet_check does:
1. Allocate legacy bitmap for each legacy DSO.
2. If SHSTK is enabled, call _dl_signal_error if there is a legacy DSO.
But legacy bitmap for legacy DSOs is never cleared. We need to clear
legacy bitmap for legacy DSOs before calling _dl_signal_error.
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>From glibc-bugs-return-47092-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 08:19:08 2020
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Subject: [Bug dynamic-link/25396] [2.31 Regression] FAIL: nss/test-netdb
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--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
Thanks. Would you please post the patch to libc-alpha? I think it is correct.
I will post my non-CET test case for this separately.
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>From glibc-bugs-return-47093-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 10:41:44 2020
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From: "sguelton at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug string/25399] New: undefined reference to `__warn_memset_zero_len' when changing gnuc version
Date: Thu, 16 Jan 2020 10:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25399
Bug ID: 25399
Summary: undefined reference to `__warn_memset_zero_len' when
changing gnuc version
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: sguelton at redhat dot com
Target Milestone: ---
When compiling the following program
```
#undef __GNUC__
#define __GNUC__ 4
#undef __GNUC_MINOR__
#define __GNUC_MINOR__ 9
#include <string.h>
char a[64];
int main ()
{
memset (a, 64, 0);
return 0;
}
```
with a decent gcc version (8.3) and glibc version (2.28), I get a link error
```
gcc a.c -D_FORTIFY_SOURCE=2 -O2
In file included from /usr/include/string.h:494,
from a.c:6:
In function ‘memset’,
inlined from ‘main’ at a.c:10:3:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:67:7: warning: call to
‘__warn_memset_zero_len’ declared with attribute warning: memset used with
constant zero length parameter; this could be due to transposed parameters
__warn_memset_zero_len ();
^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cc7RDLx1.o: in function `main':
a.c:(.text.startup+0x5): undefined reference to `__warn_memset_zero_len'
collect2: error: ld returned 1 exit status
```
No link error if I don't force the __GNUC__ and __GNUC_MINOR__.
I've checked the source of glibc-2.30, and the problem seems related to
```
#if !__GNUC_PREREQ (5,0)
__warndecl (__warn_memset_zero_len,
"memset used with constant zero length parameter; this could be due to
transposed parameters");
#endif
```
while `__warn_memset_zero_len` is not defined elsewhere.
In addition to binding glibc to some gcc version, it is also a problem for
non-gcc compilers, like clang, which set GNU C version to 3.2 by default (see
for instance https://reviews.llvm.org/D71082#1822925)
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Subject: [Bug string/25399] undefined reference to `__warn_memset_zero_len' when changing gnuc version
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
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Subject: [Bug dynamic-link/25396] Failing dlopen can leave behind dangling GL (dl_initfirst) link map pointer
Date: Thu, 16 Jan 2020 13:39:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|[2.31 Regression] FAIL: |Failing dlopen can leave
|nss/test-netdb |behind dangling GL
| |(dl_initfirst) link map
| |pointer
Flags| |security-
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Subject: [Bug dynamic-link/25396] Failing dlopen can leave behind dangling GL (dl_initfirst) link map pointer
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--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Florian Weimer from comment #4)
> Thanks. Would you please post the patch to libc-alpha? I think it is
> correct.
>
> I will post my non-CET test case for this separately.
https://sourceware.org/ml/libc-alpha/2020-01/msg00333.html
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>From glibc-bugs-return-47097-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 15:49:26 2020
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Subject: [Bug dynamic-link/25396] Failing dlopen can leave behind dangling GL (dl_initfirst) link map pointer
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H.J. Lu <hjl.tools at gmail dot com> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed by
commit 5177d85b0c050a2333a0c4165c938dd422013d05
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Thu Jan 16 06:45:36 2020 -0800
Clear GL(dl_initfirst) when freeing its link_map memory [BZ# 25396]
We should clear GL(dl_initfirst) when freeing its link_map memory.
Tested on Fedora 31/x86-64 with CET.
Reviewed-by: Florian Weimer <fweimer@redhat.com>
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Subject: [Bug dynamic-link/25396] Failing dlopen can leave behind dangling GL (dl_initfirst) link map pointer
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--- Comment #7 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=a332bd1518af518c984fad73eba6f46dc5b2b2d4
commit a332bd1518af518c984fad73eba6f46dc5b2b2d4
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Jan 16 16:53:58 2020 +0100
elf: Add elf/tst-dlopenfail-2 [BZ #25396]
Without CET, a jump into a newly loaded object through an overwritten
link map often does not crash, it just executes some random code.
CET detects this in some cases because the function pointer does not
point to the start of a function in the replacement shared object,
so there is no ENDBR instruction.
The new test uses a small shared object and the existing dangling
link map to trigger the bug.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Subject: [Bug string/25399] undefined reference to `__warn_memset_zero_len' when changing gnuc version
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Jakub Jelinek <jakub at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |jakub at redhat dot com
--- Comment #1 from Jakub Jelinek <jakub at redhat dot com> ---
debug/warning-nop.c should provide those symbols in libc.a (and
libc_nonshared.a ?), but for some reason it doesn't work anymore.
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Bug ID: 25401
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Reporter: jakub at redhat dot com
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The 9bf8e29ca136094f73f69f725f15c51facc97206 change has incorrectly added
__attribute_alloc_size__ ((1)) .
That means that it allocates as many bytes as the first argument says, but that
is not the case, it allocates that many bytes rounded up to multiple of page.
This breaks gcc g++.dg/asan/asan_test.C test.
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>From glibc-bugs-return-47101-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 16 18:03:11 2020
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Subject: [Bug malloc/25401] pvalloc must not have __attribute_alloc_size__
Date: Thu, 16 Jan 2020 18:03:00 -0000
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--- Comment #1 from Jakub Jelinek <jakub at redhat dot com> ---
Short example can be something like:
#include <malloc.h>
#include <string.h>
char *q;
int
main ()
{
char *p = (char *) pvalloc (5);
if (p == NULL)
return 0;
memcpy (p, "abcdefgh", 8);
q = p;
return 0;
}
with gcc trunk -O2 -W -Wall:
/tmp/1.c: In function ‘main’:
/tmp/1.c:12:3: warning: ‘memcpy’ writing 8 bytes into a region of size 5
[-Wstringop-overflow=]
12 | memcpy (p, "abcdefgh", 8);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/1.c:9:22: note: at offset 0 to an object with size 5 allocated by
‘pvalloc’ here
9 | char *p = (char *) pvalloc (5);
| ^~~~~~~~~~~
is reported, although the program is valid (well, relies on pagesize at least 8
bytes, which is quite reasonable assumption).
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To: glibc-bugs@sourceware.org
Subject: [Bug string/25399] undefined reference to `__warn_memset_zero_len' when changing gnuc version
Date: Thu, 16 Jan 2020 18:21:00 -0000
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
When glibc is compiled with GCC >= 5 the __warndecl in <bits/string3.h> is
compiled out, so debug/warning-nop.c gets empty.
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Subject: [Bug string/25399] undefined reference to `__warn_memset_zero_len' when changing gnuc version
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--- Comment #3 from Jakub Jelinek <jakub at redhat dot com> ---
Indeed, that's it.
So perhaps we need:
/* Pretend compilation with GCC 4.9 if compiled by GCC >= 5, so that __warndecl
are not skipped. */
#if __GNUC_PREREQ (5, 0)
#undef __GNUC__
#define __GNUC__ 4
#undef __GNUC_MINOR__
#define __GNUC_MINOR__ 9
#endif
(or instead of __GNUC_PREREQ the longer check and do this before including the
first header in warning-nop.c).
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----------------------------------------------------------------------------
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Ever confirmed|0 |1
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>From glibc-bugs-return-47106-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 17 12:39:56 2020
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Subject: [Bug dynamic-link/20802] getauxval NULL pointer dereference after static dlopen
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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 Tulio Magno Quites Machado Filho
<tuliom@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c908ae0492cb9c68736306e2bceec7244a940568
commit c908ae0492cb9c68736306e2bceec7244a940568
Author: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Date: Fri Jan 10 19:14:56 2020 -0300
powerpc: Initialize rtld_global_ro for static dlopen [BZ #20802]
Initialize dl_auxv, dl_hwcap and dl_hwcap2 in rtld_global_ro for DSOs
that have been statically dlopen'ed.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Subject: [Bug libc/24899] Missing nonstring attributes in <utmp.h>, <utmpx.h>
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--- Comment #4 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=85da102c52517a9bfb0253f7ba65b2ddb893519c
commit 85da102c52517a9bfb0253f7ba65b2ddb893519c
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 15 16:09:43 2019 +0200
login: Add nonstring attributes to struct utmp, struct utmpx [BZ #24899]
Commit 7532837d7b03b3ca5b9a63d77a5bd81dd23f3d9c ("The
-Wstringop-truncation option new in GCC 8 detects common misuses")
added __attribute_nonstring__ to bits/utmp.h, but it did not update
the parallel bits/utmpx.h header. In struct utmp, the nonstring
attribute for ut_id was missing.
(cherry picked from commit c2adefbafcdd2519ff43eca6891c77cd7b29ab62)
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Subject: [Bug libc/24879] login: utmp alarm timer can arrive after lock acquisition
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--- Comment #3 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>:
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commit 8baeebad9aa6eca0eba028a9c95cd0867b37aa2d
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 15 16:09:05 2019 +0200
login: Disarm timer after utmp lock acquisition [BZ #24879]
If the file processing takes a long time for some reason, SIGALRM can
arrive while the file is still being processed. At that point, file
access will fail with EINTR. Disarming the timer after lock
acquisition avoids that. (If there was a previous alarm, it is the
responsibility of the caller to deal with the EINTR error.)
(cherry picked from commit 628598be7e1bfaa04f34df71ef6678f2c5103dfd)
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Subject: [Bug libc/24882] login: pututline uses potentially outdated cache
Date: Fri, 17 Jan 2020 14:02:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=83f793e6a63c4bdd1b2f39618040a8317562a1f7
commit 83f793e6a63c4bdd1b2f39618040a8317562a1f7
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
(cherry picked from commit be6b16d975683e6cca57852cd4cfe715b2a9d8b1)
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Subject: [Bug libc/24880] login: utmp implementation uses struct flock with fcntl64
Date: Fri, 17 Jan 2020 14:02:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=dbbd748c5f69a2fb4d5d305df2ce15b9e69a46ef
commit dbbd748c5f69a2fb4d5d305df2ce15b9e69a46ef
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Aug 15 16:09:20 2019 +0200
login: Use struct flock64 in utmp [BZ #24880]
Commit 06ab719d30b01da401150068054d3b8ea93dd12f ("Fix Linux fcntl OFD
locks for non-LFS architectures (BZ#20251)") introduced the use of
fcntl64 into the utmp implementation. However, the lock file
structure was not updated to struct flock64 at that point.
(cherry picked from commit 0d5b2917530ccaf8ad312dfbb7bce69d569c23ad)
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/24902] login: Repeating pututxline on EINTR/EAGAIN causes stale utmp entries
Date: Fri, 17 Jan 2020 14:02:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f0cd1cfbe37eed659df75cad3b5a58ad386d0fe6
commit f0cd1cfbe37eed659df75cad3b5a58ad386d0fe6
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Aug 28 11:59:45 2019 +0200
login: pututxline could fail to overwrite existing entries [BZ #24902]
The internal_getut_r function updates the file_offset variable and
therefore must always update last_entry as well.
Previously, if pututxline could not upgrade the read lock to a
write lock, internal_getut_r would update file_offset only,
without updating last_entry, and a subsequent call would not
overwrite the existing utmpx entry at file_offset, instead
creating a new entry. This has been observed to cause unbounded
file growth in high-load situations.
This commit removes the buffer argument to internal_getut_r and
updates the last_entry variable directly, along with file_offset.
Initially reported and fixed by Ondřej Lysoněk.
Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
(cherry picked from commit 61d3db428176d9d0822e4e680305fe34285edff2)
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Subject: [Bug libc/23518] Eliminate __libc_utmp_jump_table
Date: Fri, 17 Jan 2020 14:02:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b90aefd4ac44e9353d45170282c01f0bfdeeaf1c
commit b90aefd4ac44e9353d45170282c01f0bfdeeaf1c
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Aug 5 15:54:10 2019 +0200
login: Remove utmp backend jump tables [BZ #23518]
There is just one file-based implementation, so this dispatch
mechanism is unnecessary. Instead of the vtable pointer
__libc_utmp_jump_table, use a non-negative file_fd as the indicator
that the backend is initialized.
(cherry picked from commit 1a7fe2ebe52b3c8bf465d1756e69452d05c1c103)
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Subject: [Bug libc/24882] login: pututline uses potentially outdated cache
Date: Fri, 17 Jan 2020 14:03:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Florian Weimer
<fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=dfa1f9fe0df169cd099a6f5cc0c43ccdd73590d0
commit dfa1f9fe0df169cd099a6f5cc0c43ccdd73590d0
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
(cherry picked from commit 76a7c103eb9060f9e3ba01d073ae4621a17d8b46)
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Subject: [Bug malloc/25401] pvalloc must not have __attribute_alloc_size__
Date: Fri, 17 Jan 2020 14:06:00 -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=768c83b7f60d82db6677e19dc51be9f341e0f3fc
commit 768c83b7f60d82db6677e19dc51be9f341e0f3fc
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Jan 17 15:05:34 2020 +0100
Remove incorrect alloc_size attribute from pvalloc [BZ #25401]
pvalloc is guarantueed to round up the allocation size to the page
size, so applications can assume that the memory region is larger
than the passed-in argument. The alloc_size attribute cannot express
that.
The test case is based on a suggestion from Jakub Jelinek.
This fixes commit 9bf8e29ca136094f73f69f725f15c51facc97206 ("malloc:
make malloc fail with requests larger than PTRDIFF_MAX (BZ#23741)").
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Subject: [Bug malloc/25401] pvalloc must not have __attribute_alloc_size__
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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 #3 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.31.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/25401] pvalloc must not have __attribute_alloc_size__
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--- Comment #4 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=994e529a37953a057b9e6c80afa03b03fd3724f2
commit 994e529a37953a057b9e6c80afa03b03fd3724f2
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Jan 17 15:11:20 2020 +0100
Remove incorrect alloc_size attribute from pvalloc [BZ #25401]
pvalloc is guarantueed to round up the allocation size to the page
size, so applications can assume that the memory region is larger
than the passed-in argument. The alloc_size attribute cannot express
that.
The test case is based on a suggestion from Jakub Jelinek.
This fixes commit 9bf8e29ca136094f73f69f725f15c51facc97206 ("malloc:
make malloc fail with requests larger than PTRDIFF_MAX (BZ#23741)").
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
(cherry picked from commit 768c83b7f60d82db6677e19dc51be9f341e0f3fc)
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From: "erick.ochoa@theobroma-systems.com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25413] New: VDSO not setup before `_dl_non_dynamic_init`
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https://sourceware.org/bugzilla/show_bug.cgi?id=25413
Bug ID: 25413
Summary: VDSO not setup before `_dl_non_dynamic_init`
Product: glibc
Version: 2.29
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: erick.ochoa@theobroma-systems.com
CC: drepper.fsp at gmail dot com
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Created attachment 12217
--> https://sourceware.org/bugzilla/attachment.cgi?id=12217&action=edit
Possible fix
Hello,
jemalloc [0] is a malloc alternative that makes calls to `clock_gettime` in
order to do memory profiling (and possibly other reasons). This means that uses
of malloc [1] which happen before VDSO is setup will access invalid memory.
[0] https://github.com/jemalloc/jemalloc
[1] such as the ones in _dl_get_origin and _dl_new_object
### Minimal error
```bash
[eochoa@osprey1 temp]$ cat a.c
#include <stdlib.h>
int main( int argc, char **argv )
{
malloc(0);
}
[eochoa@osprey1 temp]$ gcc -O0 -g a.c -ljemalloc -lpthread -static
[eochoa@osprey1 temp]$ ./a.out
Bus error (core dumped)
```
Please make sure
* you are running on an aarch64 machine
* and that either glibc 2.29 is installed or you are linking against glibc 2.29
like so:
```
[eochoa@osprey1 temp]$ gcc -O0 -g a.c -ljemalloc -lpthread -static
/path/to/libc.a
```
### Stack trace
Using gdb, I found the stack trace when SIGBUS was sent. Two interesting things
to note is that the error is triggered when `__clock_gettime` is called and
very early during the program, during `__libc_init_first` .
```
#0 0x5efaf6adad3c47c6 in ?? ()
#1 0x00000000004cb914 in __clock_gettime (clock_id=6, tp=0xffffffffc400) at
../sysdeps/unix/sysv/linux/clock_gettime.c:33
#2 0x0000000000470b6c in nstime_get (time=0xffff80006b80) at src/nstime.c:119
#3 0x0000000000470bb8 in nstime_update_impl (time=0xffff80006b80) at
src/nstime.c:160
#4 0x000000000042238c in arena_decay_reinit (decay=0xffff80006ab8,
decay_ms=10000) at src/arena.c:672
#5 0x00000000004224b0 in arena_decay_init (decay=0xffff80006ab8,
decay_ms=10000, stats=0xffff80000df0) at src/arena.c:693
#6 0x0000000000426298 in je_arena_new (tsdn=0x0, ind=0, extent_hooks=0x508200
<je_extent_hooks_default>) at src/arena.c:2043
#7 0x0000000000409fec in arena_init_locked (tsdn=0x0, ind=0,
extent_hooks=0x508200 <je_extent_hooks_default>) at src/jemalloc.c:340 #8
0x000000000040a0b0 in je_arena_init (tsdn=0x0, ind=0, extent_hooks=0x508200
<je_extent_hooks_default>) at src/jemalloc.c:368
#9 0x000000000040f3a8 in malloc_init_hard_a0_locked () at src/jemalloc.c:1553
#10 0x000000000040fb04 in malloc_init_hard () at src/jemalloc.c:1750
#11 0x0000000000409b90 in malloc_init () at src/jemalloc.c:223
#12 0x0000000000410a88 in imalloc_init_check (sopts=0xffffffffe128,
dopts=0xffffffffe0f0) at src/jemalloc.c:2229
#13 0x0000000000410bf4 in imalloc (sopts=0xffffffffe128, dopts=0xffffffffe0f0)
at src/jemalloc.c:2260
#14 0x0000000000410d58 in je_malloc_default (size=19) at src/jemalloc.c:2289
#15 0x0000000000410ff8 in malloc (size=19) at src/jemalloc.c:2332
#16 0x00000000004f221c in _dl_get_origin () at
../sysdeps/unix/sysv/linux/generic/dl-origin.c:51
#17 0x00000000004ce6a4 in _dl_non_dynamic_init () at dl-support.c:308
#18 0x00000000004cf528 in __libc_init_first (argc=argc@entry=2,
argv=argv@entry=0xfffffffff438, envp=0xfffffffff450)
at ../csu/init-first.c:74
#19 0x00000000004b03ac in __libc_start_main (main=0x4006c4 <main>, argc=2,
argv=0xfffffffff438, init=0x4b0840 <__libc_csu_init>,
fini=0x4b0920 <__libc_csu_fini>, rtld_fini=0x0, stack_end=<optimized out>)
at ../csu/libc-start.c:244
#20 0x000000000040058c in _start () at ../sysdeps/aarch64/start.S:92
```
### Bisecting glibc
I did a git bisect from glibc 2.28 to glibc 2.29 and found [the offending
commit](https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=979cfed05d0ee5a9d81d310ea1eb2d590739e36b;hp=ce035c6e909ad20ef2fe13c92eab4e69f6495b61)
Which enables VDSO for static linking. Since `clock_gettime` is part of VDSO
this means that `clock_gettime` should be able to link statically as well.
### The problem
However,
[`_dl_non_dynamic_init`](https://code.woboq.org/userspace/glibc/csu/init-first.c.html#74)
which has a run time path to malloc is called before
[VDSO](https://code.woboq.org/userspace/glibc/csu/init-first.c.html#78) has
been setup.
Because malloc is now jemalloc, it will attempt to use `clock_gettime` which
has not been setup properly.
### The possible solution
I'm filing a bug in glibc tracker to apply this patch. This makes the sample
program run, however there is another
[`setup_vdso`](https://code.woboq.org/userspace/glibc/elf/setup-vdso.h.html#20)
function which (without the patch applied) is called before `VDSO_SETUP` and I
am unsure about the interactions between them. Can you please clarify/review?
Thanks!
```
diff --git a/csu/init-first.c b/csu/init-first.c
index 289373f9d8..330cc7d36c 100644
--- a/csu/init-first.c
+++ b/csu/init-first.c
@@ -68,16 +68,16 @@ _init (int argc, char **argv, char **envp)
__libc_argv = argv;
__environ = envp;
+#ifdef VDSO_SETUP
+ VDSO_SETUP ();
+#endif
+
#ifndef SHARED
/* First the initialization which normally would be done by the
dynamic linker. */
_dl_non_dynamic_init ();
#endif
-#ifdef VDSO_SETUP
- VDSO_SETUP ();
-#endif
-
__init_misc (argc, argv, envp);
/* Initialize ctype data. */
```
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https://sourceware.org/bugzilla/show_bug.cgi?id=24967
Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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CC| |erick.ochoa@theobroma-syste
| |ms.com
--- Comment #13 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
*** Bug 25413 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-47122-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 17 19:05:58 2020
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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CC| |adhemerval.zanella at linaro dot o
| |rg
Resolution|--- |DUPLICATE
--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
It will be fixed on 2.31 (1bdda52fe92fd01b424cd6fbb63e3df96a95015c).
*** This bug has been marked as a duplicate of bug 24967 ***
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>From glibc-bugs-return-47124-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 17 19:44:57 2020
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From: "eggert at cs dot ucla.edu" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug glob/25414] New: 'glob' use-after-free bug
Date: Fri, 17 Jan 2020 19:44:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25414
Bug ID: 25414
Summary: 'glob' use-after-free bug
Product: glibc
Version: 2.30
Status: NEW
Severity: normal
Priority: P2
Component: glob
Assignee: unassigned at sourceware dot org
Reporter: eggert at cs dot ucla.edu
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Created attachment 12218
--> https://sourceware.org/bugzilla/attachment.cgi?id=12218&action=edit
patch for use-after-free bug in 'glob'
There's a use-after-free bug in 'glob', reported against Gnulib here:
https://lists.gnu.org/r/bug-gnulib/2020-01/msg00102.html
Proposed (but untested) glibc patch attached.
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>From glibc-bugs-return-47125-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 17 21:08:09 2020
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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Bruno Haible <bruno at clisp dot org> changed:
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--- Comment #1 from Bruno Haible <bruno at clisp dot org> ---
Created attachment 12219
--> https://sourceware.org/bugzilla/attachment.cgi?id=12219&action=edit
simpler patch for use-after-free bug in glob
The attached patch fixes the same bug, and is a little simpler.
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>From glibc-bugs-return-47126-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 17 21:10:13 2020
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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--- Comment #2 from Bruno Haible <bruno at clisp dot org> ---
Explanation of the bug:
- end_name is part of dirname,
- dirname is freed,
- after dirname is freed, the code still accesses end_name.
The fix is to store the dirname to be freed in a different variable, and free
it a bit later, after the code has finished looking at end_name.
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>From glibc-bugs-return-47127-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 13:37:38 2020
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From: "filip at sumologic dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug network/25420] New: Race condition resolv_conf.c can result in caching stale configuration forever
Date: Mon, 20 Jan 2020 13:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25420
Bug ID: 25420
Summary: Race condition resolv_conf.c can result in caching
stale configuration forever
Product: glibc
Version: 2.27
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: filip at sumologic dot com
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There is a TOCTOU race condition in
resolv/resolv_conf.c:__resolv_conf_get_current between calling stat64 on
/etc/resolv.conf and parsing its contents.
If /etc/resolv.conf is a symlink that changes what it points to between 2
different, existing files, we can end up in a situation when stat64 is called
on one file and parsing is done on the other.
Consider the following scenario:
1. /etc/resolv.conf points to file A
2. __resolv_conf_get_current is called
3. stat64 is called on file A
4. we decide to update global cached config based on stat64
5. /etc/resolv.conf is changed to point to file B
6. __resolv_conf_load is called on file B and we use its contents as the new
config
7. /etc/resolv.conf is changed back to point to file A
After these steps, the cached configuration is based on file B yet
/etc/resolv.conf points to file A. The cache won't ever be updated, because we
saved output from stat64 on file A.
I believe this issue could be solved by using fstat64 instead and then parsing
from fd.
I also include a fully working PoC, which is a bit involved and perhaps
convoluted since I'm not a C programmer. Apologies for that in advance. In any
case, here are the steps to reproduce this issue exactly.
I uploaded the needed files here:
https://gist.github.com/filipochnik/edbbf8e1eac56057d2a521840461639d
1. Compile main.c with gcc main.c -o main and renamer.c with gcc renamer.c -o
renamer
2. Prepare 2 symlinks: /etc/resolv.conf pointing to good.conf and
/etc/resolv.tmp.conf pointing to bad.conf. (I assumed that there's a local
nameserver running 127.0.0.53 and none or 127.0.0.1, these values may need
adjusting)
3. Run run.sh
Description:
This setup changes in a loop what /etc/resolv.conf points to and tries to hit
the described race condition.
renamer.c simply switches what /etc/resolv.conf points to in a quick loop.
main.c runs renamer in the backgroud and resolves google.com in a loop. If we
get an error on a first try it means we loaded the invalid configuration and
possibly hit the race condition. We then kill renamer process, which leaves
/etc/resolv.conf pointing to the correct configuration. In theory, we would
expect that this change will be picked up soon but every so often it never
happens. This means we hit the race condition.
If you run this PoC you should hit a race condition in under a minute.
Once the race condition is hit, the bug can finally be confirmed by running
touch on the correct config. The main process will then see that stat64 output
changed, load the config again and resolve google.com successfully.
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>From glibc-bugs-return-47128-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 13:38:09 2020
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Subject: [Bug network/25420] Race condition resolv_conf.c can result in caching stale configuration forever
Date: Mon, 20 Jan 2020 13:38:00 -0000
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>From glibc-bugs-return-47129-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 14:41:57 2020
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25421] New: Implement RTLD_GROUP, RTLD_PARENT, RTLD_WORLD
Date: Mon, 20 Jan 2020 14:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25421
Bug ID: 25421
Summary: Implement RTLD_GROUP, RTLD_PARENT, RTLD_WORLD
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 Solaris dynamic loader implements 3 additional controls for symbol scope
resolution:
RTLD_GROUP - Resolution is only allowed from the self-contained set of objects
that are in their dependencies.
RTLD_PARENT - Resolution of the symbols of a secondary dlopen'd object can be
taken from the parent object making the dlopen call. In this way you can have a
secondary object that needs symbols from many different parent implementations
without having an explicit dependency.
RTLD_WORLD - Only symbols from RTLD_GLOBAL are used for resolution, ignorning
the current scope.
With these 3 additional modes we could provide additional semantics that would
be useful for plugin authors, particularly RTLD_PARENT.
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>From glibc-bugs-return-47130-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 14:42:08 2020
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Subject: [Bug dynamic-link/25421] Implement RTLD_GROUP, RTLD_PARENT, RTLD_WORLD
Date: Mon, 20 Jan 2020 14:42:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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| |/show_bug.cgi?id=1621927
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>From glibc-bugs-return-47133-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 14:51:54 2020
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Subject: [Bug math/20123] [powerpc] Enable libmvec vector math library on POWER VSX
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Carlos O'Donell <carlos at redhat dot com> changed:
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| |illa/show_bug.cgi?id=25422
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>From glibc-bugs-return-47131-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 14:51:17 2020
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Subject: [Bug math/25422] New: aarch64: Enable libmvec vector math library on AArch64
Date: Mon, 20 Jan 2020 14:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25422
Bug ID: 25422
Summary: aarch64: Enable libmvec vector math library on AArch64
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
Target Milestone: ---
Add AArch64 support for the libmvec vector math library to exploit the AArch64
vector instructions.
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>From glibc-bugs-return-47132-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 14:51:53 2020
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Subject: [Bug math/25422] aarch64: Enable libmvec vector math library on AArch64
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Carlos O'Donell <carlos at redhat dot com> changed:
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See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=20123
Severity|normal |enhancement
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>From glibc-bugs-return-47135-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 15:25:52 2020
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Subject: [Bug libc/25423] New: Array overflow in backtrace on powerpc
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https://sourceware.org/bugzilla/show_bug.cgi?id=25423
Bug ID: 25423
Summary: Array overflow in backtrace on powerpc
Product: glibc
Version: 2.26
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: schwab@linux-m68k.org
CC: drepper.fsp at gmail dot com
Blocks: 15867
Target Milestone: ---
Target: powerpc*-*-*
Commit d400dcac5e introduced an array overflow in the backtrace functions for
powerpc. The entry for the signal trampoline stack frame is stored without
checking the array bounds.
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=15867
[Bug 15867] PowerPC: backtrace() fails to handle signal trampoline stack frames
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>From glibc-bugs-return-47134-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 15:25:52 2020
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Subject: [Bug libc/15867] PowerPC: backtrace() fails to handle signal trampoline stack frames
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |25423
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=25423
[Bug 25423] Array overflow in backtrace on powerpc
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>From glibc-bugs-return-47136-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 15:26:11 2020
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Subject: [Bug libc/25423] Array overflow in backtrace on powerpc
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|powerpc*-*-* |
Host| |powerpc*-*-*
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>From glibc-bugs-return-47137-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 15:27:17 2020
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|2.26 |2.19
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>From glibc-bugs-return-47139-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:33:27 2020
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
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Filip Ochnik <filip at sumologic dot com> changed:
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CC| |filip at sumologic dot com
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From: "filip at sumologic dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/25425] New: Missing call to __resolv_context_put in getaddrinfo.c:gethosts
Date: Mon, 20 Jan 2020 16:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25425
Bug ID: 25425
Summary: Missing call to __resolv_context_put in
getaddrinfo.c:gethosts
Product: glibc
Version: 2.27
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: filip at sumologic dot com
Target Milestone: ---
In reference to mailing list discussion
https://sourceware.org/ml/libc-help/2020-01/msg00031.html
There is a missing call to __resolv_context_put here
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=f813d85aa39d80a9f23f95368854213ebd60b46b;hb=HEAD#l291
before the jump to free_and_return.
Details:
Looking at the function getaddrinfo.c:gaih_inet there is a call to
__resolv_context_get in
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=f813d85aa39d80a9f23f95368854213ebd60b46b;hb=HEAD#l746
It is then possible to arrive at the call site of gethosts macro without
calling __resolv_context_put
here:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=f813d85aa39d80a9f23f95368854213ebd60b46b;hb=HEAD#l849
or here:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=f813d85aa39d80a9f23f95368854213ebd60b46b;hb=HEAD#l861
Next, in gethosts, we have a lot of branches, but it's possible to arrive here
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=f813d85aa39d80a9f23f95368854213ebd60b46b;hb=HEAD#l291
where the code jumps to free_and_return, without calling __resolv_context_put
as in other branches.
Finally, free_and_return does not call __resolv_context_put either:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=f813d85aa39d80a9f23f95368854213ebd60b46b;hb=HEAD#l1116
In certain scenarios (I don't know what they are as I don't understand the code
well enough) we can call __resolv_context_get without matching
__resolv_context_put and never free the underlying context.
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>From glibc-bugs-return-47140-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:35:43 2020
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
Date: Mon, 20 Jan 2020 16:35:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This error path is only encountered after a strdup failure, so I don't think
this memory leak has practical consequence (in other words, it does not open up
a denial-of-service vector).
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>From glibc-bugs-return-47141-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:39:42 2020
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
Date: Mon, 20 Jan 2020 16:39:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-01-20
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Ever confirmed|0 |1
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>From glibc-bugs-return-47142-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:42:15 2020
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=21885
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>From glibc-bugs-return-47143-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:42:15 2020
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Subject: [Bug network/21885] getaddrinfo: gethosts does not release resolver context on memory allocation failure
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See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=25425
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>From glibc-bugs-return-47144-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:43:45 2020
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25423] Array overflow in backtrace on powerpc
Date: Mon, 20 Jan 2020 16:43:00 -0000
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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----------------------------------------------------------------------------
CC| |adhemerval.zanella at linaro dot o
| |rg
Assignee|unassigned at sourceware dot org |adhemerval.zanella at linaro dot o
| |rg
--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
I will check this out.
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>From glibc-bugs-return-47145-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 16:48:45 2020
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Subject: [Bug network/25420] Race condition in resolv_conf.c can result in caching stale configuration forever
Date: Mon, 20 Jan 2020 16:48:00 -0000
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Filip Ochnik <filip at sumologic dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Race condition |Race condition in
|resolv_conf.c can result in |resolv_conf.c can result in
|caching stale configuration |caching stale configuration
|forever |forever
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>From glibc-bugs-return-47146-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 17:01:34 2020
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://sourceware.org/ml/libc-alpha/2020-01/msg00446.html
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>From glibc-bugs-return-47147-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 20 17:34:58 2020
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Subject: [Bug network/25420] Race condition in resolv_conf.c can result in caching stale configuration forever
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-01-20
CC| |fweimer at redhat dot com
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Ever confirmed|0 |1
Flags| |security-
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Subject: [Bug network/25192] getaddrinfo can cause crash in the application.
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
No response in several. Sorry, we cannot address this without further
information. Closing this bug.
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
Date: Mon, 20 Jan 2020 17:38:00 -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=8b222fa38700422b4da6731806835f0bbf40920d
commit 8b222fa38700422b4da6731806835f0bbf40920d
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 20 18:37:13 2020 +0100
getaddrinfo: Fix resource leak after strdup failure in gethosts [BZ #25425]
Filip Ochnik spotted that one of the error jumps in gethosts fails to
call __resolv_context_put to release the resolver context.
Fixes commit 352f4ff9a268b81ef5d4b2413f582565806e4790 ("resolv:
Introduce struct resolv_context [BZ #21668]") and commit
964263bb8d650f1681665c55704fb01a8e725621 ("getaddrinfo: Release
resolver context on error in gethosts [BZ #21885]").
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Subject: [Bug network/21668] resolv: res_init cross-thread broadcast introduces race conditions
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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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8b222fa38700422b4da6731806835f0bbf40920d
commit 8b222fa38700422b4da6731806835f0bbf40920d
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 20 18:37:13 2020 +0100
getaddrinfo: Fix resource leak after strdup failure in gethosts [BZ #25425]
Filip Ochnik spotted that one of the error jumps in gethosts fails to
call __resolv_context_put to release the resolver context.
Fixes commit 352f4ff9a268b81ef5d4b2413f582565806e4790 ("resolv:
Introduce struct resolv_context [BZ #21668]") and commit
964263bb8d650f1681665c55704fb01a8e725621 ("getaddrinfo: Release
resolver context on error in gethosts [BZ #21885]").
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Subject: [Bug network/21885] getaddrinfo: gethosts does not release resolver context on memory allocation failure
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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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8b222fa38700422b4da6731806835f0bbf40920d
commit 8b222fa38700422b4da6731806835f0bbf40920d
Author: Florian Weimer <fweimer@redhat.com>
Date: Mon Jan 20 18:37:13 2020 +0100
getaddrinfo: Fix resource leak after strdup failure in gethosts [BZ #25425]
Filip Ochnik spotted that one of the error jumps in gethosts fails to
call __resolv_context_put to release the resolver context.
Fixes commit 352f4ff9a268b81ef5d4b2413f582565806e4790 ("resolv:
Introduce struct resolv_context [BZ #21668]") and commit
964263bb8d650f1681665c55704fb01a8e725621 ("getaddrinfo: Release
resolver context on error in gethosts [BZ #21885]").
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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Subject: [Bug network/25425] Missing call to __resolv_context_put in getaddrinfo.c:gethosts
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Target Milestone|--- |2.31
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.31.
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>From glibc-bugs-return-47153-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 21 05:00:02 2020
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From: "swarajsomala at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/25427] New: glibc is failing while doing bitbake[THUD version]
Date: Tue, 21 Jan 2020 05:00:00 -0000
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Bug ID: 25427
Summary: glibc is failing while doing bitbake[THUD version]
Product: glibc
Version: 2.28
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: swarajsomala at gmail dot com
CC: carlos at redhat dot com
Target Milestone: ---
Created attachment 12222
--> https://sourceware.org/bugzilla/attachment.cgi?id=12222&action=edit
Please find the attached log file
Hello There,
I am trying to do the bitbake of glibc(V2.28) using yocto(thud). But while
running do_compile task it's throwing the below error.
```
libpthread_pic.a(old_pthread_atfork.os): relocation R_386_GOTOFF against
undefined hidden symbol `__dso_handle' can not be used when making a shared
object
```
I tried in five laptops in that three are successfully compiled but the
remaining two laptops have the same problem. I am using Ubuntu(16.04).
I followed the below steps while setting up the build.
git clone -b thud https://git.yoctoproject.org/git/poky
git clone -b thud https://github.com/oci-labs/meta-opendds
git clone -b thud https://github.com/openembedded/meta-openembedded
git config --global http.sslVerify false
source poky/oe-init-build-env
bitbake-layers add-layer ../meta-openembedded/meta-oe
bitbake-layers add-layer ../meta-openembedded/meta-python
bitbake-layers add-layer ../yocto-layers/meta-ara
bitbake-layers add-layer ../meta-opendds
echo "MACHINE ??= \"qemux86\"" >> conf/local.conf
echo "DL_DIR = \"$HOME/yocto/downloads\"" >> conf/local.conf
echo "SSTATE_DIR = \"$HOME/yocto/sstate-cache\"" >> conf/local.conf
echo 'PREFERRED_VERSION_opendds="1.0+git%"' >> conf/local.conf
echo 'PREFERRED_VERSION_opendds-native="1.0+git%"' >> conf/local.conf
echo 'PREFERRED_VERSION_nativesdk-opendds="1.0+git%"' >> conf/local.conf
source poky/oe-init-build-env
bitbake glibc
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Subject: [Bug build/25427] glibc is failing while doing bitbake[THUD version]
Date: Tue, 21 Jan 2020 05:14:00 -0000
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swaraj somala <swarajsomala at gmail dot com> changed:
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Subject: [Bug libc/25428] New: [Loader] _dl_map_object Memory contents valid but Registers contents are invalid/corrupted
Date: Tue, 21 Jan 2020 06:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25428
Bug ID: 25428
Summary: [Loader] _dl_map_object Memory contents valid but
Registers contents are invalid/corrupted
Product: glibc
Version: 2.24
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: akhipatel at gmail dot com
CC: drepper.fsp at gmail dot com
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Dear All
Recently I got many issues with same backtrace, issue occurred after long test
with My complete stack,unfortunately I am unable to reproduce this issue with
sample test application.
Since my Coredump contents are valid but application is getting crashed
accessing invalid address stored in R1,
In all issues my observations are
1-> Backtrack is similar
2-> Memory contents are valid but Registers r9/r1 contents are
invalid/corrupted.
3->
gdb) p/x l->l_info[14]->d_un.d_val
$1 = 0xd128
(gdb) p/x l->l_info[5]->d_un.d_ptr
$2 = 0x45c47f38
(gdb) x/1x 0x45c47f38+0xd128
0x45c55060: 0x7462696c >>>>>>>>>>>>> Valid
0x41008c2c <+164>: ldr r3, [r3, #4]
// 0xd128 = p/x l->l_info[14]->d_un.d_val
0x41008c30 <+168>: ldr r9, [r2, #4]
//0x45c47f38 = p/x l->l_info[5]->d_un.d_ptr
0x41008c34 <+172>: add r9, r9, r3
//0x7462696c
0x41008c38 <+176>: mov r1, r9
0x41008c3c <+180>: bl 0x4101a13c <strcmp>
=> 0x41008c40 <+184>: cmp r0, #0
0x41008c44 <+188>: bne 0x41008bd8 <_dl_map_object+80>
0x41008c48 <+192>: mov r1, r9
0x41008c4c <+196>: ldr r0, [r8, #28]
0x41008c50 <+200>: bl 0x41005ad0 <add_name_to_object>
Seems Expected value in r9/r1 is 0x7462696c but actual value is 0x55555554
(gdb) info r
r0 0x46fa23fd 1190798333
r1 0x55555554 1431655764
r2 0x45ca1b54 1170873172
r3 0x6c 108
r4 0x46fa23fc 1190798332
r5 0x0 0
r6 0x374f0 226544
r7 0x2 2
r8 0x41670 267888
r9 0x55555554 1431655764
r10 0x0 0
r11 0xbe264224 3190178340
r12 0x80000000 2147483648
sp 0xbe261ff0 0xbe261ff0
lr 0x41008c40 1090554944
pc 0x41008c40 0x41008c40 <_dl_map_object+184>
cpsr 0x20000010 536870928
(gdb)
(gdb)bt
#0 strcmp (p1=<optimized out>, p2=<optimized out>) at
/usr/src/debug/glibc-2.24/string/strcmp.c:39
#1 0x41008c40 in _dl_map_object (loader=0xb67610e8, name=0x438e130e
"terTMCloneTable", type=1, trace_mode=0, mode=0, nsid=0) at
/usr/src/debug/glibc-2.24/elf/dl-load.c:2009
#2 0x4100e0b8 in openaux (a=0xbe67ec50) at
/usr/src/debug/glibc-2.24/elf/dl-deps.c:63
#3 0x4101057c in _dl_catch_error (objname=0x41030830 <data>,
objname@entry=0xbe67ec4c, errstring=0x0, errstring@entry=0xbe67ec48,
mallocedp=0xbe67ec4c, mallocedp@entry=0xbe67ec47, operate=0xbe67ec48,
args=args@entry=0xbe67ec50) at /usr/src/debug/glibc-2.24/elf/dl-error.c:187
#4 0x4100e2a4 in _dl_map_object_deps (map=map@entry=0x41030908,
preloads=<optimized out>, npreloads=npreloads@entry=0,
trace_mode=trace_mode@entry=0, open_mode=<optimized out>, open_mode@entry=0) at
/usr/src/debug/glibc-2.24/elf/dl-deps.c:254
#5 0x41002b44 in dl_main (phdr=<optimized out>, phnum=<optimized out>,
user_entry=<optimized out>, auxv=<optimized out>) at
/usr/src/debug/glibc-2.24/elf/rtld.c:1608
#6 0x41017ce0 in _dl_sysdep_start (start_argptr=start_argptr@entry=0xbe67ede0,
dl_main=0x41001054 <dl_main>) at
/usr/src/debug/glibc-2.24/elf/../elf/dl-sysdep.c:249
#7 0x410051f8 in _dl_start_final (arg=0xbe67ede0) at
/usr/src/debug/glibc-2.24/elf/rtld.c:307
#8 _dl_start (arg=0xbe67ede0) at /usr/src/debug/glibc-2.24/elf/rtld.c:413
#9 0x41000a70 in _start () from ./symbols/lib/ld-linux.so.3
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
We added below debug patch in _dl_map_object, and found "soname_offset" is
invalid but if we read from coredump it seems valid
- soname = ((const char *) D_PTR (l, l_info[DT_STRTAB])
- + l->l_info[DT_SONAME]->d_un.d_val);
+ strtab = (char *)D_PTR (l, l_info[DT_STRTAB]);
+ soname_offset = l->l_info[DT_SONAME]->d_un.d_val;
+ soname = strtab + soname_offset;
(gdb) p soname+ soname_offset
$13 = 0xe542a356 <error: Cannot access memory at address 0xe542a356>
(gdb)
(gdb) p soname_offset // stored in local variable
$1 = 1688293803
(gdb) p l->l_info[14]->d_un.d_val // fetched from coredump (which read from
actual so file on flash)
$2 = 2071
(gdb)
Now for me seems Loader issue Please comments.
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Subject: [Bug build/25427] glibc is failing while doing bitbake[THUD version]
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Please report this to the party who supplied these build scripts. The glibc
project does not maintain them.
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Subject: [Bug libc/25428] [Loader] _dl_map_object Memory contents valid but Registers contents are invalid/corrupted
Date: Tue, 21 Jan 2020 08:03:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Unfortunately, this bug report does not contain enough information. I don't
think the cmp instruction at which the trap occurs would trap in any case.
Is it possible that something has overwritten the dynamic loader on disk,
truncating the file first? That's a typical source of such crashes.
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-01-21
CC| |fweimer at redhat dot com
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Ever confirmed|0 |1
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
My rework of strerror for bug 1890 happens to fix this as well.
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>From glibc-bugs-return-47162-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 21 08:26:27 2020
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Subject: [Bug libc/25320] uniq should provide binary comparison.
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Florian Weimer <fweimer at redhat dot com> changed:
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Subject: [Bug libc/25305] wrong _SC_ARG_MAX from sysconf
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
I'm worried that returning 128 KiB in all cases would result in a substantial
performance regression in tools like xargs.
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Subject: [Bug malloc/25288] malloc: memory leak on tcache cache variable for main thread
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |fweimer at redhat dot com
Resolution|--- |MOVED
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
We deliberately do not deallocate memory on process termination because the
kernel will do it for us. This is why leak tracers either have to model the
internal interfaces, or call __libc_freeres on process termination. In other
words, the Intel Inspector needs to be made tcache-aware.
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Subject: [Bug malloc/25286] [RFE] Reduce brk(2) syscall usage by implementing scaling heuristic.
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Florian Weimer <fweimer at redhat dot com> changed:
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>From glibc-bugs-return-47166-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 21 08:59:21 2020
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Subject: [Bug libc/25428] [Loader] _dl_map_object Memory contents valid but Registers contents are invalid/corrupted
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Akhilesh <akhipatel at gmail dot com> changed:
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--- Comment #2 from Akhilesh <akhipatel at gmail dot com> ---
(In reply to Florian Weimer from comment #1)
> Unfortunately, this bug report does not contain enough information. I don't
> think the cmp instruction at which the trap occurs would trap in any case.
Actual crash happened in strcmp since r1(which is soname) is
invalid->0x55555554 , but when i read soname from memory shows
valid->0x45c55060
(gdb) p (char *)0x45c47f38+0xd128
$2 = 0x45c55060 "libtv-ap-ipc.so"
(gdb)
(gdb) disassemble
Dump of assembler code for function strcmp:
0x4101a13c <+0>: ldrb r3, [r0], #1
=> 0x4101a140 <+4>: ldrb r2, [r1], #1
0x4101a144 <+8>: cmp r3, #0
0x4101a148 <+12>: beq 0x4101a15c <strcmp+32>
0x4101a14c <+16>: cmp r3, r2
0x4101a150 <+20>: beq 0x4101a13c <strcmp>
0x4101a154 <+24>: sub r0, r3, r2
0x4101a158 <+28>: bx lr
0x4101a15c <+32>: rsb r0, r2, #0
0x4101a160 <+36>: bx lr
End of assembler dump.
(gdb) f 1
(gdb) disassemble
Dump of assembler code for function _dl_map_object:
0x41008b88 <+0>: push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
------------------------------------------
-------------------------------------------
0x45c55060: 0x7462696c >>>>>>>>>>>>> Valid
0x41008c2c <+164>: ldr r3, [r3, #4]
// 0xd128 = p/x l->l_info[14]->d_un.d_val
0x41008c30 <+168>: ldr r9, [r2, #4]
//0x45c47f38 = p/x l->l_info[5]->d_un.d_ptr
0x41008c34 <+172>: add r9, r9, r3
//0x45c47f38+0xd128 => soname
0x41008c38 <+176>: mov r1, r9
0x41008c3c <+180>: bl 0x4101a13c <strcmp>
=> 0x41008c40 <+184>: cmp r0, #0
0x41008c44 <+188>: bne 0x41008bd8 <_dl_map_object+80>
0x41008c48 <+192>: mov r1, r9
0x41008c4c <+196>: ldr r0, [r8, #28]
0x41008c50 <+200>: bl 0x41005ad0 <add_name_to_object>
> Is it possible that something has overwritten the dynamic loader on disk,
> truncating the file first? That's a typical source of such crashes.
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Subject: [Bug libc/25428] [Loader] _dl_map_object Memory contents valid but Registers contents are invalid/corrupted
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Akhilesh <akhipatel at gmail dot com> changed:
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Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2020-01-21
Resolution|INVALID |---
Ever confirmed|0 |1
--- Comment #11 from Andreas Schwab <schwab@linux-m68k.org> ---
Reopen.
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https://sourceware.org/bugzilla/show_bug.cgi?id=25423
--- Comment #2 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=d93769405996dfc11d216ddbe415946617b5a494
commit d93769405996dfc11d216ddbe415946617b5a494
Author: Andreas Schwab <schwab@suse.de>
Date: Mon Jan 20 17:01:50 2020 +0100
Fix array overflow in backtrace on PowerPC (bug 25423)
When unwinding through a signal frame the backtrace function on PowerPC
didn't check array bounds when storing the frame address. Fixes commit
d400dcac5e ("PowerPC: fix backtrace to handle signal trampolines").
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25423] Array overflow in backtrace on powerpc
Date: Tue, 21 Jan 2020 14:41:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.31
--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed in 2.31.
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Subject: [Bug libc/15867] PowerPC: backtrace() fails to handle signal trampoline stack frames
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https://sourceware.org/bugzilla/show_bug.cgi?id=15867
Bug 15867 depends on bug 25423, which changed state.
Bug 25423 Summary: Array overflow in backtrace on powerpc
https://sourceware.org/bugzilla/show_bug.cgi?id=25423
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug network/25429] New: res_vinit_1 leaks fp stdio stream on error
Date: Tue, 21 Jan 2020 16:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25429
Bug ID: 25429
Summary: res_vinit_1 leaks fp stdio stream on error
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
Target Milestone: ---
Flags: security-
On memory allocation and other errors, res_vinit_1 returns directly:
ssize_t ret = __getline (&parser->buffer, &buffer_size, fp);
if (ret <= 0)
{
if (_IO_ferror_unlocked (fp))
return false;
else
break;
}
…
cp = __strdup (cp);
if (cp == NULL)
return false;
…
cp = __strdup (cp);
if (cp == NULL)
return false;
But __resolv_conf_load expects res_vinit_1 to always close the stream.
The best fix is probably to change res_vinit_1 not to take ownership.
I'm flagging this as security- despite the descriptor resource leak because it
is not likely that it is possible to trigger this at will.
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Subject: [Bug network/25429] res_vinit_1 leaks fp stdio stream on error
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Florian Weimer <fweimer at redhat dot com> changed:
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Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
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>From glibc-bugs-return-47174-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 21 21:15:46 2020
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From: "fche at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25434] New: RFE: detect undefined behavior for fts_open, instead of later SEGV
Date: Tue, 21 Jan 2020 21:15:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25434
Bug ID: 25434
Summary: RFE: detect undefined behavior for fts_open, instead
of later SEGV
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: fche at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The following program SEGV's in fts_read, because fts_open was given a
0-element directory list. It'd be nicer from a quality-of-implementation point
of view if fts_open() detected this condition and returned a null FTS* instead
of a broken one.
#include <fts.h>
#include <stdio.h>
#include <assert.h>
int main()
{
char* dirs[1] = { NULL };
FTS *fts = fts_open (dirs, FTS_LOGICAL, NULL);
assert (fts != NULL);
FTSENT *fe = fts_read (fts); /* SEGV here */
printf("%s\n", fe->fts_path);
}
glibc-2.29-27.fc30.x86_64
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Subject: [Bug libc/25434] RFE: detect undefined behavior for fts_open, instead of later SEGV
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--- Comment #1 from Frank Ch. Eigler <fche at redhat dot com> ---
Program received signal SIGSEGV, Segmentation fault.
fts_read (sp=0x4052a0) at ../sysdeps/wordsize-64/../../io/fts.c:457
457 if (p->fts_level == FTS_ROOTPARENTLEVEL) {
(gdb) bt
#0 fts_read (sp=0x4052a0) at ../sysdeps/wordsize-64/../../io/fts.c:457
#1 0x00000000004011ac in main () at foo.c:10
(gdb) l
452 /* Move up to the parent node. */
453 p = tmp->fts_parent;
454 sp->fts_cur = p;
455 free(tmp);
456
457 if (p->fts_level == FTS_ROOTPARENTLEVEL) {
458 /*
459 * Done; free everything up and set errno to 0 so the
user
460 * can distinguish between error and EOF.
461 */
(gdb) p p
$1 = (FTSENT *) 0x0
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Subject: [Bug libc/25436] New: Mitigating speculative execution beyond SVC
Date: Wed, 22 Jan 2020 01:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25436
Bug ID: 25436
Summary: Mitigating speculative execution beyond SVC
Product: glibc
Version: 2.32
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: asteinhauser at google dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 12223
--> https://sourceware.org/bugzilla/attachment.cgi?id=12223&action=edit
Description of the CPU vulnerability
aarch64 CPUs speculate past the SVC instruction creating Spectre-like effects.
The equivalent behavior of the ERET instruction was already fixed in Linux,
FreeBSD, OpenBSD and Optee OS:
https://github.com/torvalds/linux/commit/679db70801da9fda91d26caf13bf5b5ccc74e8e8
https://github.com/freebsd/freebsd/commit/29fb48ace4186a41c409fde52bcf4216e9e50b61
https://github.com/openbsd/src/commit/3a08873ece1cb28ace89fd65e8f3c1375cc98de2
https://github.com/OP-TEE/optee_os/commit/abfd092aa19f9c0251e3d5551e2d68a9ebcfec8a
The full report of the vulnerability is in the attachment. The mitigation
requires just appending a DSB NSH, ISB sequence after the SVC instruction. That
should not bring an additional performance penalty, because the change of
exception levels is serializing anyway.
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Subject: [Bug libc/25436] Mitigating speculative execution beyond SVC
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--- Comment #1 from Anthony Steinhauser <asteinhauser at google dot com> ---
Created attachment 12224
--> https://sourceware.org/bugzilla/attachment.cgi?id=12224&action=edit
Patch
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Subject: [Bug malloc/25288] malloc: memory leak on tcache cache variable for main thread
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CC| |carlos at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #1)
> We deliberately do not deallocate memory on process termination because the
> kernel will do it for us. This is why leak tracers either have to model the
> internal interfaces, or call __libc_freeres on process termination. In other
> words, the Intel Inspector needs to be made tcache-aware.
Calling __libc_freeres would fix this since it calls __libc_thread_freeres
which calls __malloc_arena_thread_freeres to shutdown and free the tcache
blocks. Valgrind does this correctly.
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Subject: [Bug libc/25436] Mitigating speculative execution beyond SVC
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>From glibc-bugs-return-47180-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 09:59:28 2020
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Subject: [Bug libc/25436] aarch64: Mitigating speculative execution beyond SVC
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Summary|Mitigating speculative |aarch64: Mitigating
|execution beyond SVC |speculative execution
| |beyond SVC
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>From glibc-bugs-return-47181-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 12:01:25 2020
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Subject: [Bug nss/25440] New: Add request type in DNS random id
Date: Wed, 22 Jan 2020 12:01:00 -0000
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Bug ID: 25440
Summary: Add request type in DNS random id
Product: glibc
Version: 2.32
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The following if-condition judgment statement can be found in glibc-2.30 file
res_send.c line:1397
...
1397 if (recvresp1 == 0 && hp->id == anhp->id)
1398 recvresp1 = 1;
1399 else
1400 recvresp2 = 1;
...
These statements are used to determine whether the DNS request is responded
based on the response packet ID. Although, the IDs of these DNS request packets
are randomly generated, they are unlikely to be the same.
In fact, these random IDs are generated by the clock_gettime function. When my
computer calls the clock_gettime function twice within 1 nanosecond to send
both IPv4 and IPv6 DNS requests, I get two request packets with the same ID.
In this case, if I first receive an ipv6 reply from the server, this code will
determine it as an ipv4 reply based on its id.
...
1343 if ((recvresp1 || !res_queriesmatch(buf, buf + buflen,
1344 *thisansp,
1345 *thisansp
1346 + *thisanssizp))
1347 && (recvresp2 || !res_queriesmatch(buf2, buf2 + buflen2,
1348 *thisansp,
1349 *thisansp
1350 + *thisanssizp)))
1351 goto wait;
...
Finally, the reply type is judged to be mismatched, and I'll spend an extra 5
seconds waiting for the reply for the next cycle.
To avoid this situation, I think some bits in id should be adjusted to
distinguish between IPv4 and IPv6 requests. For example
if (type == T_A)
hp->id |= 0x80000000;
else if (type == T_AAAA)
hp->id &= 0x7fffffff;
Alternatively, this problem can be avoided by adding the packet format check to
the packet receiving check.
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Subject: [Bug crypt/25441] New: DOS attack risk caused by incomplete system password check function
Date: Wed, 22 Jan 2020 12:55:00 -0000
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Bug ID: 25441
Summary: DOS attack risk caused by incomplete system password
check function
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: crypt
Assignee: unassigned at sourceware dot org
Reporter: weinull at outlook dot com
Target Milestone: ---
Created attachment 12225
--> https://sourceware.org/bugzilla/attachment.cgi?id=12225&action=edit
demo
Hi Security Team:
I found a security problem in the underlying crypt function of the system. The
crypt function can be used for password checking, because the crypt function
does not limit the length of the password. When checking a very long password,
this function will always be in calculation and cannot return normally. And,
the CPU usage rate reaches 100%. Failure to return normally will cause the
program using this function to be abnormal and achieve the effect of a DOS
attack.
The crypt function in the official documentation states that the function of
the function is used for password checking. Developers believe that this
function is very secure, so they will use this function for password checking
(usually used for system password checking, and some applications also Will use
this function to check their own password), when developers do not limit the
length of the password will trigger a DOS attack, usually the password check is
in the login function, the login function can usually be remotely operated, all
can Implement remote DOS attacks without authentication.
I have found this problem with multiple products, for example:
1. Linux PAM (Verification only)
2. VMware related products (DoS attacks have been implemented, reported to
vendors)
3. FreeNAS related products(DoS attacks have been implemented, reported to
vendors)
4. The crypt module in the Python standard library (Verification only, reported
to vendors)
5. Management port of a brand server(DoS attacks have been implemented,
reported to vendors)
Many products will use this function for password checking, and fully trust the
security of this function (the related products listed can be used as proof).
If no other protection measures are taken, it is easy to implement DOS attacks
(including possible switches, routers, etc. (Such as key network equipment),
the password length should be limited, normal passwords will not be very long,
it should be a system-level function, it should be controlled from the system
level, and it can not be limited only by the product developer.
Because it is a problem with the underlying functions of the system, all Linux
distributions will be affected.
/glibc/crypt/crypt-entry.c
I wrote some demos, I put it in the attachment, you can test.
If you have any questions, please send me an email and look forward to your
reply, thank you.
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Subject: [Bug crypt/25441] DOS attack risk caused by incomplete system password check function
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>From glibc-bugs-return-47184-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 13:03:34 2020
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Subject: [Bug crypt/25441] DOS attack risk caused by incomplete system password check function
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----------------------------------------------------------------------------
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See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=20616
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Subject: [Bug crypt/20616] Limit crypt rounds to avoid denial of service
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>From glibc-bugs-return-47186-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 14:39:35 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/14578] fchmodat(..., AT_SYMLINK_NOFOLLOW) returns ENOTSUP on non-symlinks
Date: Wed, 22 Jan 2020 14:39:00 -0000
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--- Comment #12 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Eric Blake from comment #11)
> (In reply to joseph@codesourcery.com from comment #4)
> > I don't know if O_PATH will do the trick. If it does, what do kernels
> > before 2.6.39 (when O_PATH was introduced) do when O_PATH is used? (If
> > they just ignore it and open the file as if O_PATH were not present, then
> > we'd need to make sure not to try using O_PATH on older kernels, to avoid
> > any side-effects from opening device files, for example.)
>
> O_PATH will do the trick for kernels 3.6 and newer; here's a discussion
> where qemu implemented a solution similar to Rich's pseudo-solution:
> https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01600.html
> https://lists.gnu.org/archive/html/qemu-devel/2017-08/msg01812.html
I think the Linux 3.6 refers to fstat support for O_PATH descriptors. fstatat
with AT_EMPTY_PATH should work for them since kernel 2.6.39:
commit 65cfc6722361570bfe255698d9cd4dccaf47570d
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Sun Mar 13 15:56:26 2011 -0400
readlinkat(), fchownat() and fstatat() with empty relative pathnames
For readlinkat() we simply allow empty pathname; it will fail unless
we have dfd equal to O_PATH-opened symlink, so we are outside of
POSIX scope here. For fchownat() and fstatat() we allow AT_EMPTY_PATH;
let the caller explicitly ask for such behaviour.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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>From glibc-bugs-return-47188-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 14:43:32 2020
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>From glibc-bugs-return-47189-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 15:16:37 2020
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From: "nicolas.cavallari@green-communications.fr" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25442] New: openlog() keep reference to ident that caller may have freed
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Bug ID: 25442
Summary: openlog() keep reference to ident that caller may have
freed
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: nicolas.cavallari@green-communications.fr
CC: drepper.fsp at gmail dot com
Target Milestone: ---
When calling
openlog(ident, 0, 0)
glibc, instead of copying ident to a safe place, saves only the pointer.
If the memory pointed by the pointer is freed, the behavior of the program is
undefined when the syslog() function attempts to use it.
The expected output of the program below is "save the planet" "save the string"
being written in syslog. The actual result is "hack the planet" and an
use-after-free.
#include <syslog.h>
#include <string.h>
#include <stdlib.h>
int main() {
char* buf = malloc(12);
strcpy(buf, "save");
openlog(buf, 0, LOG_USER);
strcpy(buf, "hack");
syslog(LOG_CRIT, "the planet");
free(buf);
syslog(LOG_CRIT, "the string");
closelog();
return 0;
}
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>From glibc-bugs-return-47190-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 15:44:52 2020
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Subject: [Bug libc/25442] openlog() keep reference to ident that caller may have freed
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
openlog is not documented to copy the string, thus you need to keep it alive.
NOTES
The argument ident in the call of openlog() is probably stored as-is.
Thus, if the string it points to is changed, syslog() may start
prepending the changed string, and if the string it points to ceases to
exist, the results are undefined. Most portable is to use a string
constant.
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>From glibc-bugs-return-47191-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 16:13:01 2020
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Subject: [Bug libc/14578] fchmodat(..., AT_SYMLINK_NOFOLLOW) returns ENOTSUP on non-symlinks
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>From glibc-bugs-return-47192-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 18:13:10 2020
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Subject: [Bug libc/25305] wrong _SC_ARG_MAX from sysconf
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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
Resolution|--- |WONTFIX
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Florian Weimer from comment #1)
> I'm worried that returning 128 KiB in all cases would result in a
> substantial performance regression in tools like xargs.
I agree. I went through all of the kernel discussions.
There are three values:
* _POSIX_ARG_MAX - static lower limit (safe)
* ARG_MAX - static upper limit
* sysconf (_SC_ARG_MAX) - runtime upper limit (maximum)
You need to implement dynamic detection of the usable value between the two
extreme values depending on your application requirements and kernel behaviour.
There simply isn't a portable way to optimize for the largest value.
Anything else requires new kernel interfaces to provide a 1:1 semantic mapping
with the implementation.
I'm going to mark this as RESOLVED/WONTFIX. Please feel free to reopen or
discuss on libc-alpha@sourceware.org with the whole community.
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>From glibc-bugs-return-47193-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 22 20:06:19 2020
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--- Comment #13 from Florian Weimer <fweimer at redhat dot com> ---
Patches posted: https://sourceware.org/ml/libc-alpha/2020-01/msg00510.html
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>From glibc-bugs-return-47194-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 24 15:56:13 2020
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From: "bjorn.van.ingelgem at axsguard dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nss/25457] New: hosts lookup fails for ipv4mapped ipv6 addresses
Date: Fri, 24 Jan 2020 15:56:00 -0000
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Bug ID: 25457
Summary: hosts lookup fails for ipv4mapped ipv6 addresses
Product: glibc
Version: 2.30
Status: UNCONFIRMED
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Priority: P2
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Created attachment 12228
--> https://sourceware.org/bugzilla/attachment.cgi?id=12228&action=edit
lookup
Lookup when 10.20.30.40 is added to the hosts file.
10.20.30.40 www.example.com
$ ./gni_mapped
look up via IPv4: 0/www.example.com
look up via IPv6: -2/not found
----------------------------------
Lookup when ::ffff:10.20.30.40 is added to the hosts file.
::ffff:10.20.30.40
$ ./gni_mapped
look up via IPv4: 0/www.example.com
look up via IPv6: -2/www.example.com
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>From glibc-bugs-return-47195-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 24 17:39:36 2020
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Subject: [Bug libc/17176] backtrace() not working on ARMv7a
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Matthijs van Duin <matthijsvanduin at gmail dot com> changed:
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CC| |matthijsvanduin at gmail dot com
--- Comment #5 from Matthijs van Duin <matthijsvanduin at gmail dot com> ---
Backtrace doesn't work for the same reason throwing exceptions from signal
handlers doesn't work: glibc on ARM doesn't support unwinding through signal
handlers.
This is something for which I showed a standalone fix a while back [1], which
also fixes backtrace [2]. It can serve as example for anyone feeling motivated
to fix the problem in glibc itself.
It does still require the code that causes the segfault to be compiled with
-fnon-call-exceptions or -fasynchronous-unwind-tables.
[1] https://gcc.gnu.org/ml/gcc/2015-10/msg00018.html
[2] https://gcc.gnu.org/ml/gcc/2015-10/msg00022.html
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>From glibc-bugs-return-47196-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Jan 25 14:28:06 2020
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Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
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Romain Geissler <romain.geissler at amadeus dot com> changed:
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CC| |romain.geissler at amadeus dot com
--- Comment #12 from Romain Geissler <romain.geissler at amadeus dot com> ---
Hi,
Please note that this cases happened to me when I tried to bootstrap clang/llvm
using the latest glibc master:
FAILED: CMakeFiles/clang_rt.builtins-x86_64.dir/emutls.c.o
/workdir/build/final-system/llvm-build/./bin/clang --target=x86_64-1a-linux-gnu
-DVISIBILITY_HIDDEN -O2 -msse -msse2 -msse3
-I/workdir/build/final-system/llvm-temporary-static-dependencies/install/include
-I/workdir/build/final-system/llvm-temporary-static-dependencies/install/include/ncursesw
-O3 -DNDEBUG -m64 -std=c11 -fPIC -fno-builtin -fvisibility=hidden
-fomit-frame-pointer -MD -MT CMakeFiles/clang_rt.builtins-x86_64.dir/emutls.c.o
-MF CMakeFiles/clang_rt.builtins-x86_64.dir/emutls.c.o.d -o
CMakeFiles/clang_rt.builtins-x86_64.dir/emutls.c.o -c
/workdir/src/llvm-11.0.0/compiler-rt/lib/builtins/emutls.c
/workdir/src/llvm-11.0.0/compiler-rt/lib/builtins/emutls.c:52:39: error: use of
undeclared identifier 'PTHREAD_MUTEX_DEFAULT'
static pthread_mutex_t emutls_mutex = PTHREAD_MUTEX_INITIALIZER;
^
/opt/1A/toolchain/x86_64-v21.0.0/include/pthread.h:87:36: note: expanded from
macro 'PTHREAD_MUTEX_INITIALIZER'
{ { __PTHREAD_MUTEX_INITIALIZER (PTHREAD_MUTEX_DEFAULT) } }
^
So I am not sure whether glibc or clang must be changed, but I guess that's
annoying that a few days before the glibc 2.31 there is such a build failure
when building clang with this new glibc ;)
Cheers,
Romain
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>From glibc-bugs-return-47197-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Jan 25 22:53:34 2020
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From: "digitalfreak at lingonborough dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/25119] Change Czech weekday names to lowercase
Date: Sat, 25 Jan 2020 22:53:00 -0000
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--- Comment #5 from Rafal Luzynski <digitalfreak at lingonborough dot com> ---
(In reply to Jan Slaný from comment #4)
> 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?
I have just contacted (off-line) a Czech software translator and we are going
to discuss this issue more thoroughly.
> 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.
This is a case we discussed in another bug report. Your example is a complete
sentence translation and my answer is: no, glibc' strftime function is not
supposed to support this complex cases. Its purpose is to format dates. If
you need a complete sentence you need an automatic translation software. :-)
> In short, I feel that the decision whether to capitalize or not should
> really be left upon the author of the text.
True, this is reported as bug 21370 but we don't yet have a solution.
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>From glibc-bugs-return-47198-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 27 09:55:21 2020
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Subject: [Bug stdio/1190] fgetc()/fread() behaviour is not POSIX compliant
Date: Mon, 27 Jan 2020 09:55:00 -0000
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Ulrich Sibiller <uli42 at gmx dot de> changed:
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--- Comment #21 from Ulrich Sibiller <uli42 at gmx dot de> ---
Well, I have come across a binary only software that is no longer maintained
that I require for some compatibility tests. This software fails on glibc 2.28
(Debian Buster) due to the fix introduced via this bugzilla, I recompiled glibc
with the patch removed and the software works fine.
So I would like to have a way to restore the old behaviour during runtime.
BTW: the software is NoMachine's nxclient which is no longer available from
NoMachine but in a repackaged version from here:
https://unixforum.org/up/nxman/nxclient_3.5.0.7-eter4debian_amd64.deb. See
https://github.com/dimbor-ru/freenx-server/issues/5 for a discussion about the
topic.
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>From glibc-bugs-return-47199-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 27 13:12:35 2020
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Subject: [Bug network/18419] add an option to resolv.conf to set all-zeros edns-client-subnet option
Date: Mon, 27 Jan 2020 13:12:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |WONTFIX
--- Comment #5 from Florian Weimer <fweimer at redhat dot com> ---
It turns out that ECS requires retrying queries in complex ways because the
REFUSED error code was overloaded. (There are likely other issues as well.)
This is impossible to implement efficiently without persisting state across
multiple processes, so it requires running some sort of daemon. At this point,
you can just install a DNS local resolver such as Unbound.
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Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
Date: Mon, 27 Jan 2020 13:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25271
--- Comment #13 from Florian Weimer <fweimer at redhat dot com> ---
Patch posted: https://sourceware.org/ml/libc-alpha/2020-01/msg00580.html
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>From glibc-bugs-return-47202-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Jan 27 14:50:33 2020
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug network/20450] resolv: Add timeout-ms option
Date: Mon, 27 Jan 2020 14:50:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
Even though there are existing patches for this we need to review all the
timeouts across the resolver and reconcile them. In fact I expect we'll need to
rewrite quite a bit of code to get this timeout to work reliably.
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>From glibc-bugs-return-47203-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 28 04:30:59 2020
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From: "akhilesh.k at samsung dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25474] New: Add MADV_COLD and MADV_PAGEOUT from Linux 5.4
Date: Tue, 28 Jan 2020 04:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25474
Bug ID: 25474
Summary: Add MADV_COLD and MADV_PAGEOUT from Linux 5.4
Product: glibc
Version: 2.30
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: akhilesh.k at samsung dot com
CC: drepper.fsp at gmail dot com
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Created attachment 12234
--> https://sourceware.org/bugzilla/attachment.cgi?id=12234&action=edit
patch adds the new MADV_COLD and MADV_PAGEOUT taken from Linux 5.4
Two new madvise() flags: MADV_COLD and MADV_PAGEOUT added in linux 5.4
This patch adds the new MADV_COLD and MADV_PAGEOUT from Linux
5.4 to bits/mman-linux.h.
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>From glibc-bugs-return-47204-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 28 05:59:38 2020
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Subject: [Bug libc/25474] Adding MADV_COLD and MADV_PAGEOUT from Linux 5.4
Date: Tue, 28 Jan 2020 05:59:00 -0000
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Akhilesh Kumar <akhilesh.k at samsung dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Add MADV_COLD and |Adding MADV_COLD and
|MADV_PAGEOUT from Linux 5.4 |MADV_PAGEOUT from Linux 5.4
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>From glibc-bugs-return-47205-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 28 16:47:13 2020
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From: "fw at ferncast dot de" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/16738] gai_suspend returns EAI_SYSTEM when timeout is hit and DONT_NEED_GAI_MISC_COND is defined
Date: Tue, 28 Jan 2020 16:47:00 -0000
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Florian Wickert <fw at ferncast dot de> changed:
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CC| |fw at ferncast dot de
--- Comment #1 from Florian Wickert <fw at ferncast dot de> ---
Created attachment 12235
--> https://sourceware.org/bugzilla/attachment.cgi?id=12235&action=edit
Fix the result of GAI_MISC_WAIT for timeouts
Almost six years later I stumbled across this bug.
The GAI_MISC_WAIT macro (sysdeps/nptl/gai_misc.h) is used in two places only.
One of which ignores the value in the "result" variable.
Because of this, there should not be any side-effects when changing
else if (status == ETIMEDOUT) \
result = EAGAIN; \
into
else if (status == ETIMEDOUT) \
result = ETIMEDOUT; \
After this change, the macro has two possible return values: EINTR and
ETIMEDOUT.
These are also the ones which gai_suspend expects to see.
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>From glibc-bugs-return-47206-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Jan 28 22:25:27 2020
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25474] Adding MADV_COLD and MADV_PAGEOUT from Linux 5.4
Date: Tue, 28 Jan 2020 22:25:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25474
--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
This change went in in November. If you wish to propose a backport to a
release branch for some reason, the backport commit should be prepared
with "git cherry-pick -x" and proposed on libc-stable.
https://sourceware.org/glibc/wiki/Release#General_policy
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>From glibc-bugs-return-47207-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 29 05:36:16 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25474] Add MADV_COLD and MADV_PAGEOUT from Linux 5.4
Date: Wed, 29 Jan 2020 05:36:00 -0000
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Akhilesh Kumar <akhilesh.k at samsung dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Adding MADV_COLD and |Add MADV_COLD and
|MADV_PAGEOUT from Linux 5.4 |MADV_PAGEOUT from Linux 5.4
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>From glibc-bugs-return-47208-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 29 15:47:15 2020
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From: "pavel.devecka at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/25481] New: getaddrinfo() doesn't resolve IPv4 localhost, when an unrelated IPv4 long line is present in the /etc/hosts
Date: Wed, 29 Jan 2020 15:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25481
Bug ID: 25481
Summary: getaddrinfo() doesn't resolve IPv4 localhost, when an
unrelated IPv4 long line is present in the /etc/hosts
Product: glibc
Version: 2.22
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: network
Assignee: unassigned at sourceware dot org
Reporter: pavel.devecka at gmail dot com
Target Milestone: ---
• getaddrinfo() is unable to resolve the IPv4 localhost hostname in
situation, when an unrelated IPv4 line in /etc/hosts has 29 entries for an
unrelated IP. (Example of such line is at the bottom of this bug report.)
• When any 1 of the aliases is removed, this behavior disappears.
• When "x" is put instead of the alias removed in the previous point,
this behavior returns.
• Above behavior has been observed with glibc-2.22-62.6.2.x86_64,
glibc-2.22-62.13.2.x86_64 and glibc-2.22-100.15.4.x86_64.
• Vendor (SUSE) refuses to continue to troubleshoot this, because
according to them limits hit here "are well beyond the scope of a proper use
case for /etc/hosts", which seems to be a reasonable argument.
---
12.34.5.67 xxxxxxxxxx12 xxxxxxxxxx12.3456.7890.xxx.xx.xxx
xxxxxxxxxx12.xx.xxxxxxxx.xxxxx xxxxxxxxxx12.xxxx.xxxxxxxx.xxxxx
xxx-xxxx-x12.xxxx.xxxxxxxx.xxxxx xxx-xxxx-x12.xxxxxxx.xxx
xxx-xxx1-x23.xxxx.xxxxxxxx.xxxxx xxx-xxx1-x23.xxxxxxx.xxx xxx.xxxxxxx.xxx
xxx-xxxx-x12.xxxx.xxxxxxxx.xxxxx xxxxx.xxxxxxx.xxx
xxx-xxxx-x12.xxxx.xxxxxxxx.xxxxx xxx-xxxxxx-x12.xxxx.xxxxxxxx.xxxxx
xxx-xx-x12.xxxx.xxxxxxxx.xxxxx xxx-xx-x12.xx.xxxxxxxx.xxxxx
xxx-xxxxx-xx.xxxxxxx.xxx xxx-xxxxx-xx xxx-xxxxx-xx.xx.xxxxxxxx.xxxxx
xxxxxx12.xxxxxxx.xxx xxxxxx_xxx xxxxxx_xxx.xxxxxxx.xxx xxxxxxxxx.xxxxxxx.xxx
xxxxxxx.xxxxxxx.xxx xxx-xxxxx-x12.xxxxxxxxxx.xxxxxxxx
xxx-xxxxxx-x12.xx.xxxxxxxx.xxxxx xxx-xxxxxx-x12.xxxx.xxxxxxxx.xxxxx
xxx-xxxxx-x12.xxxx.xxxxxxxx.xxxxx xxx-xxxxx-x12.xx.xxxxxxxx.xxxxx
xxxxxxx.xxxxxxx.xxx
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>From glibc-bugs-return-47209-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 29 16:31:15 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/25481] getaddrinfo() doesn't resolve IPv4 localhost, when an unrelated IPv4 long line is present in the /etc/hosts
Date: Wed, 29 Jan 2020 16:30:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2020-01-29
CC| |fweimer at redhat dot com
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=18991
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
Ever confirmed|0 |1
Flags| |security-
--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
I believe this is bug 18991. This was fixed in glibc 2.28. Can you test that
glibc version (or the current master version) to see if this fixes the bug as
well?
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>From glibc-bugs-return-47210-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Jan 29 16:31:27 2020
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Subject: [Bug nss/18991] nss_files skips large entry in database
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=25481
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>From glibc-bugs-return-47211-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 30 06:46:31 2020
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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tejesh.opensrc at gmail dot com <tejesh.opensrc at gmail dot com> changed:
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>From glibc-bugs-return-47212-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 30 08:57:59 2020
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From: "romain.geissler at amadeus dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
Date: Thu, 30 Jan 2020 08:57:00 -0000
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--- Comment #14 from Romain Geissler <romain.geissler at amadeus dot com> ---
Thanks for posting this !
I have not seen any concern on the mailing list about it, so shall it be pushed
into master just before the release ?
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>From glibc-bugs-return-47213-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 30 14:56:00 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
Date: Thu, 30 Jan 2020 14:55:00 -0000
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--- Comment #15 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=9baa46aa7b1aa56c8fb313013bb9aecf4ed96504
commit 9baa46aa7b1aa56c8fb313013bb9aecf4ed96504
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Jan 30 15:54:49 2020 +0100
nptl: Avoid using PTHREAD_MUTEX_DEFAULT in macro definition [BZ #25271]
Commit 1c3f9acf1f1f75faa7a28bf39af64afd ("nptl: Add struct_mutex.h")
replaced a zero constant with the identifier PTHREAD_MUTEX_DEFAULT
in the macro PTHREAD_MUTEX_INITIALIZER. However, that constant
is not available in ISO C11 mode:
In file included from /usr/include/bits/thread-shared-types.h:74,
from /usr/include/bits/pthreadtypes.h:23,
from /usr/include/pthread.h:26,
from bug25271.c:1:
bug25271.c:3:21: error: ‘PTHREAD_MUTEX_DEFAULT’ undeclared here (not in a
function)
3 | pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER;
| ^~~~~~~~~~~~~~~~~~~~~~~~~
This commit change the constant to the equivalent
PTHREAD_MUTEX_TIMED_NP, which is in the POSIX extension namespace
and thus always available.
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>From glibc-bugs-return-47214-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Jan 30 14:56:40 2020
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Subject: [Bug libc/25271] undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling with -stdÁ1
Date: Thu, 30 Jan 2020 14:56:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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Status|ASSIGNED |RESOLVED
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Target Milestone|--- |2.31
--- Comment #16 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.31.
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>From glibc-bugs-return-47215-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 31 05:59:26 2020
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From: "lzsiga at freemail dot c3.hu" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] New: ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
Date: Fri, 31 Jan 2020 05:59:00 -0000
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Bug ID: 25486
Summary: ld-linux-x86-64.so exports 'calloc' but imports
'malloc' from 'libc.so.6'
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Reporter: lzsiga at freemail dot c3.hu
Target Milestone: ---
Hi, I think I found a situation where 'ld-linux-x86-64.so.2' exports its
'calloc' implementation (dl-minimal.c) but import 'malloc' from 'libc.so.6'.
Now 'ld-linux:malloc' returns the memory zeroed, but 'libc:malloc' returns the
memory dirty.
The result is a 'calloc' implementation which returns dirty memory.
The problem is described in details on these places:
https://stackoverflow.com/questions/59956996/problem-loading-a-library-with-ffi-in-php-7-4
https://www.linuxquestions.org/questions/programming-9/debugging-dlopen-4175668676/#post6084584
and also here the same issue in a different context:
https://stackoverflow.com/questions/39760479/why-does-calling-calloc-in-gdb-not-appear-to-zero-out-the-memory
Details:
User wants to load an external plugin into PHP via libffi. The plugin is linked
with wrong dependency list (here:
https://stackoverflow.com/questions/59956996/problem-loading-a-library-with-ffi-in-php-7-4#59994038
). Also the plugin depends on glib-2.0.so.
All these components stacked together result in glibs.so-2.0's constructor
calling ld-linux:calloc (which in turn calls libc:malloc) gets back dirty (not
zeroed) memory.
Running it with DL_DEBUG=all shows the event nicely (added line-number, removed
pid):
173486 relocation processing: /lib64/ld-linux-x86-64.so.2
173592 binding file /lib64/ld-linux-x86-64.so.2 [0] to
/lib/x86_64-linux-gnu/libc.so.6 [0]: normal symbol `malloc' [GLIBC_2.2.5]
173633 binding file /lib64/ld-linux-x86-64.so.2 [0] to
/lib/x86_64-linux-gnu/libc.so.6 [0]: normal symbol `calloc' [GLIBC_2.2.5]
...
184669 relocation processing: /usr/local/lib64/libglib-2.0.so.0 (lazy)
185310 symbol=calloc; lookup in file=./libsomething.so [0]
185311 symbol=calloc; lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
185312 binding file /usr/local/lib64/libglib-2.0.so.0 [0] to
/lib64/ld-linux-x86-64.so.2 [0]: normal symbol `calloc' [GLIBC_2.2.5]
...
210561 calling init: /usr/local/lib64/libglib-2.0.so.0
210614 symbol=calloc; lookup in file=./libsomething.so [0]
210615 symbol=calloc; lookup in file=/lib64/ld-linux-x86-64.so.2 [0]
210616 binding file /usr/local/lib64/libglib-2.0.so.0 [0] to
/lib64/ld-linux-x86-64.so.2 [0]: normal symbol `calloc' [GLIBC_2.2.5]
Suggested solution: ld-linux-x86-64.so shouldn't export symbols that exist in
libc.so.6 (okay, they are 'Weak symbols' but that didn't prevent this problem);
but if it does, its 'calloc' implementation call do zero the memory it returns.
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>From glibc-bugs-return-47216-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 31 07:57:23 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug math/25487] New: sinl() stack corruption from crafted input
Date: Fri, 31 Jan 2020 07:57:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25487
Bug ID: 25487
Summary: sinl() stack corruption from crafted input
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: math
Assignee: unassigned at sourceware dot org
Reporter: guidovranken at gmail dot com
Target Milestone: ---
Initially reported privately to the security address.
#include <math.h>
#include <string.h>
int main(void)
{
const unsigned char _v[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x5d};
long double v;
memcpy(&v, _v, sizeof(v));
/* Return the result so that gcc doesn't optimize everything away */
return sinl(v);
}
$ gcc poc_sinl_buffer_overflow.c -lm && ./a.out
*** stack smashing detected ***: <unknown> terminated
Aborted (core dumped)
(gdb) bt
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1 0x00007ffff7686801 in __GI_abort () at abort.c:79
#2 0x00007ffff76cf897 in __libc_message (action=action@entry=do_abort,
fmt=fmt@entry=0x7ffff77fc988 "*** %s ***: %s terminated\n") at
../sysdeps/posix/libc_fatal.c:181
#3 0x00007ffff777acd1 in __GI___fortify_fail_abort
(need_backtrace=need_backtrace@entry=false, msg=msg@entry=0x7ffff77fc966 "stack
smashing detected") at fortify_fail.c:33
#4 0x00007ffff777ac92 in __stack_chk_fail () at stack_chk_fail.c:29
#5 0x00007ffff7abbe6a in __kernel_rem_pio2 (x=0x7fffffffda70,
y=0x7fffffffda90, e0=<optimized out>, nx=<optimized out>, prec=<optimized out>,
ipio2=0x7ffff7b042a0 <two_over_pi>)
at ../sysdeps/ieee754/dbl-64/k_rem_pio2.c:362
#6 0x0000000000000000 in ?? ()
This has been tested on x64 Linux with both the Ubuntu glibc and the
latest git glibc.
Apart from sinl, some other functions that share the same code are prone to
this as well.
You can show me the patch before you merge so I can test it for you.
Credit: ForAllSecure Mayhem
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>From glibc-bugs-return-47217-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 31 08:28:44 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/25487] sinl() stack corruption from crafted input
Date: Fri, 31 Jan 2020 08:28:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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>From glibc-bugs-return-47218-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 31 10:46:07 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
Date: Fri, 31 Jan 2020 10:46:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
You will have to adjust the link order. We can change this in the dynamic
loader (and it may even be a useful change because it makes setting breakpoints
on the real malloc easier), but I doubt that distributions would backport this,
the current behavior will remain for the foreseeable future.
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>From glibc-bugs-return-47219-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 31 11:05:27 2020
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Subject: [Bug localedata/25119] Change Czech weekday names to lowercase
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--- Comment #6 from Petr Kovar <pknbe at volny dot cz> ---
I(In reply to Rafal Luzynski from comment #3)
> 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?
As a Czech translator asked by Rafal to comment on this, I agree the change
requested would sadly break the grammar for strings where the weekday name is
at the first position. We have no control over sentence context here, so a
proper fix indeed seems to be to introduce another flag.
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Subject: [Bug dynamic-link/25486] ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
Date: Fri, 31 Jan 2020 12:39:00 -0000
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--- Comment #2 from Lorinczy Zsigmond <lzsiga at freemail dot c3.hu> ---
Created attachment 12241
--> https://sourceware.org/bugzilla/attachment.cgi?id=12241&action=edit
demo module for reproduction (C source)
Compilation:
gcc -I/usr/local/include/glib-2.0 -o demodule.so -shared \
demodule.c -fPIC -DPIC /lib64/ld-linux-x86-64.so.2 -lglib-2.0
Call-module in PHP:
#!/usr/local/bin/php
<?php
$ffi = FFI::cdef('', './demodule.so');
?>
Test#1
$ php demodule.php
demodule.init: calloc is at 0x7f6351b80b40 returned 0x2532df0 first 8 bytes:
7f634f22d698
Test#2:
$ cat demodule.php | php
demodule.init: calloc is at 0x7f6b6369eb40 returned 0x32b1f00 first 8 bytes: 0
It show that it is undeterminisctic: in the second test the memory happens to
be zeroed, but that's only accidental not warranted.
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Subject: [Bug dynamic-link/25486] ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
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--- Comment #3 from Lorinczy Zsigmond <lzsiga at freemail dot c3.hu> ---
(In reply to Florian Weimer from comment #1)
Thank you for your quick reply -- I don't really like to be a proxy, but the
original problem-owner has just reported that his shared object has been linked
with Free Pascal, and he doesn't really know what should be changed.
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>From glibc-bugs-return-47223-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Jan 31 15:14:33 2020
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Subject: [Bug dynamic-link/25486] ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
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--- Comment #4 from Lorinczy Zsigmond <lzsiga at freemail dot c3.hu> ---
On the other hand, if you don't change this in the dynamic linker, the current
behavior will remain for good. Please examine the demo program I attached, and
if you find it believable, please change the status to VERIFIED.
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
Date: Fri, 31 Jan 2020 18:24:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25486
Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #5 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Lorinczy Zsigmond from comment #2)
> gcc -I/usr/local/include/glib-2.0 -o demodule.so -shared \
> demodule.c -fPIC -DPIC /lib64/ld-linux-x86-64.so.2 -lglib-2.0
^^^^^^^^^^^^^^^^^^^^^^^^^^^
This usage of linking against the system ld.so is not correct. It's not clear
what the purpose of this is, or why it's there.
(In reply to Lorinczy Zsigmond from comment #4)
> On the other hand, if you don't change this in the dynamic linker, the
> current behavior will remain for good. Please examine the demo program I
> attached, and if you find it believable, please change the status to
> VERIFIED.
It is a link order issue.
You must link with libc.so first.
If this is an issue with the Free Pascal compiler then please file a bug there.
The dynamic loader is capable of exporting any interfaces it needs for the
implementation, and it should always be linked to after the C library
implementation. There is nothing wrong with the loader exporting this global
symbols in the dynamic symbol table.
As Florian notes it would be more robust to remove the symbols from the dynamic
loader, but that's not something we're going to do right now.
If you feel strongly about this robustness issue then we can rework this ticket
to be an RFE for ld.so that includes removing interfaces to avoid accidental
linkage. However, such an issue is very low priority and unlikley to get fixed
unless somone has the explicit interest in fixing it.
I appreciate the bug report, and posting here is the right way to get feedback
on bugs like this. Thank you for the report.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] ld-linux-x86-64.so exports 'calloc' but imports 'malloc' from 'libc.so.6'
Date: Sat, 01 Feb 2020 06:17:00 -0000
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--- Comment #6 from Lorinczy Zsigmond <lzsiga at freemail dot c3.hu> ---
(In reply to Carlos O'Donell from comment #5)
Hi, thank you for your reply.
I agree, the concrete problem wouldn't have occurred if it weren't for the
wrong linkage.
Also, I agree, the concrete problem has to be solved via re-linking the shared
object in question.
Also, I agree, quick action on glibc-side is neither needed or possible.
Nonetheless, this problem (the original problem, not my demo) is occurred in
the wild, it wasn't fabricated to make ld-linux look bad.
Also google-search for +"dl-minimal.c" +"inconsitency detected" suggests it was
not the first time.
Also I don't see in the documentation "don't explicitly link shared objects
against ld-linux-so or else bad things might happen (under some rare
conditions)".
So I think this 'calloc' in 'ld-linux' is a weak point which should be
eventually removed (e.g. made it unexported).
> If you feel strongly about this robustness issue
> then we can rework this ticket to be an RFE for ld.so
> that includes removing interfaces to avoid accidental linkage.
> However, such an issue is very low priority and unlikely to get fixed
> unless somone has the explicit interest in fixing it.
That would be okay with me, thank you.
Regards: Lorinczy Zsigmond
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Sat, 01 Feb 2020 06:39:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Last reconfirmed| |2020-02-01
Resolution|WORKSFORME |---
Summary|ld-linux-x86-64.so exports |RFE: Stop exporting free,
|'calloc' but imports |realloc, calloc, and malloc
|'malloc' from 'libc.so.6' |from ld.so
Ever confirmed|0 |1
Severity|normal |enhancement
--- Comment #7 from Carlos O'Donell <carlos at redhat dot com> ---
Reopening as RFE to cleanup ld.so exported malloc API symbols.
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From: "zimmerma+gcc at loria dot fr" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/14469] Inaccurate j0f function
Date: Sun, 02 Feb 2020 21:49:00 -0000
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Paul Zimmermann <zimmerma+gcc at loria dot fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zimmerma+gcc at loria dot fr
--- Comment #4 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
here is the worst case found by exhaustive search on all binary32 values with
glib 2.31 on x86_64:
#include <stdio.h>
#include <math.h>
#include <fenv.h>
extern float j0f(float);
extern double j0(double);
int main() {
float a,r1;
double r2;
a=0x1.4665d2p24;
fesetround(FE_TONEAREST);
r1 = j0f(a); //actual result
r2 = j0(a); //actual result 2
printf("inputs: a = %.6a\n", a);
printf("actual = %.6a\n", r1);
printf("expected = %.6a\n", r2);
printf("error = %f ulp\n", fabs(r1 - r2) * exp2(23.0-logbf(r2)));
return 0;
}
inputs: a = 0x1.4665d2p+24
actual = 0x1.1c6742p-40
expected = 0x1.4a040dp-49
error = 4760682489.747789 ulp
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14470] Inaccurate j1f function
Date: Sun, 02 Feb 2020 21:54:00 -0000
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Paul Zimmermann <zimmerma+gcc at loria dot fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zimmerma+gcc at loria dot fr
--- Comment #3 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
here is the worst case found by exhaustive search on all binary32 values with
glibc 2.31 on x86_64:
#include <stdio.h>
#include <math.h>
#include <fenv.h>
extern float j1f(float);
extern double j1(double);
int main() {
float a,r1;
double r2;
a=0x3ba13.e8p0; //argument
fesetround(FE_TONEAREST);
r1 = j1f(a); //actual result
r2 = j1(a); //actual result 2
printf("inputs: a = %.6a\n", a);
printf("actual = %.6a\n", r1);
printf("expected = %.6a\n", r2);
printf("error = %f ulp\n", fabs(r1 - r2) * exp2(23.0-logbf(r2)));
return 0;
}
inputs: a = 0x1.dd09f4p+17
actual = 0x1.4d4036p-29
expected = -0x1.db6a7ep-35
error = 714456063.171884 ulp
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14471] Inaccurate y0f function
Date: Sun, 02 Feb 2020 22:01:00 -0000
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--- Comment #4 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
here is the worst case found by exhaustive search on all binary32 values with
glibc 2.31 on x86_64:
#include <stdio.h>
#include <math.h>
#include <fenv.h>
extern float y0f(float);
extern double y0(double);
int main() {
float a,r1;
double r2;
a=0x25c54.84p0; //argument
fesetround(FE_TONEAREST); // FE_TONEAREST, FE_UPWARD, FE_DOWNWARD, and
FE_TOWARDZERO
r1 = y0f(a); //actual result
r2 = y0(a); //actual result 2
printf("inputs: a = %.6a\n", a);
printf("actual = %.6a\n", r1);
printf("expected = %.6a\n", r2);
printf("error = %f ulp\n", fabs(r1 - r2) * exp2(23.0-logbf(r2)));
return 0;
}
inputs: a = 0x1.2e2a42p+17
actual = -0x1.c21d2ep-30
expected = 0x1.a48974p-40
error = 15117099194.163063 ulp
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14472] Inaccurate y1f function
Date: Sun, 02 Feb 2020 22:04:00 -0000
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Paul Zimmermann <zimmerma+gcc at loria dot fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zimmerma+gcc at loria dot fr
--- Comment #3 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
here is the worst case found by exhaustive search on all binary32 values with
glibc 2.31 on x86_64:
#include <stdio.h>
#include <math.h>
#include <fenv.h>
extern float y1f(float);
extern double y1(double);
int main() {
float a,r1;
double r2;
a=0x32165.c8p0; //argument
fesetround(FE_TONEAREST);
r1 = y1f(a); //actual result
r2 = y1(a); //actual result 2
printf("inputs: a = %.6a\n", a);
printf("actual = %.6a\n", r1);
printf("expected = %.6a\n", r2);
printf("error = %f ulp\n", fabs(r1 - r2) * exp2(23.0-logbf(r2)));
return 0;
}
inputs: a = 0x1.90b2e4p+17
actual = 0x1.c365bcp-29
expected = 0x1.1b8b88p-34
error = 464033275.951745 ulp
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Mon, 03 Feb 2020 09:20:00 -0000
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--- Comment #76 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=4267522f5e0309f7606a8d1da5d436a166a719e2
commit 4267522f5e0309f7606a8d1da5d436a166a719e2
Author: Jwtiyar Nariman <jwtiyar@gmail.com>
Date: Mon Jan 13 10:06:06 2020 +0100
Add new locale: ckb_IQ (Kurdish/Sorani spoken in Iraq) [BZ #9809]
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #77 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=ae199e7d6423ed3bd0c8669381966ca4c58f4f49
commit ae199e7d6423ed3bd0c8669381966ca4c58f4f49
Author: Mike FABIAN <mfabian@redhat.com>
Date: Mon Jan 13 10:12:07 2020 +0100
Fix ckb_IQ [BZ #9809]
Add ckb_IQ to SUPPORTED file.
Add ckb_IQ.UTF-8.in collation test file.
Mention new ckb_IQ locale in NEWS.
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Subject: [Bug localedata/22525] or_IN LC_COLLATE does not use copy "iso14651_t1"
Date: Mon, 03 Feb 2020 09:21:00 -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 Mike Fabian <mfabian@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=cdeae33d71696bb0e81667d4788d0b38606aefb6
commit cdeae33d71696bb0e81667d4788d0b38606aefb6
Author: Mike FABIAN <mfabian@redhat.com>
Date: Thu Dec 5 14:21:21 2019 +0100
Update or_IN collation [BZ #22525]
- Add a test file or_IN.UTF-8.in.
- Make the collation agree with CLDR.
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Subject: [Bug math/14469] Inaccurate j0f function
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--- Comment #5 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
the large error for huge operands can be avoided by removing the
optimization "if(ix>0x48000000)" around line 63 of
sysdeps/ieee754/flt-32/e_j0f.c. Then for x=0x1.4665d2p24 (x=21390802) we get an
error of 239 ulps
only (which corresponds to the cancellation between u*cc and v*ss in the
expression u*cc-v*ss at line 66).
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Subject: [Bug libc/10353] Methods for deleting all file descriptors greater than given integer (closefrom)
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Helge Deller <deller at gmx dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |deller at gmx dot de
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14469] Inaccurate j0f function
Date: Mon, 03 Feb 2020 14:57:00 -0000
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--- Comment #6 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
To fix the large errors properly, all of the j0 / j1 / y0 / y1 functions
probably need to be reimplemented along the lines described in
<http://www.cl.cam.ac.uk/~jrh13/papers/bessel.ps.gz> - expansions around
each zero of the functions for small arguments, expansions based on phase
and magnitude or similar functions for larger arguments (plus range
reduction for phase) where the phase is either rigorously / exhaustively
shown to be accurate enough (for float) or is heuristically accurate
enough (for other floating-point formats, if exhaustive checks around the
zeroes, until the phase approximation gets simple enough to use results on
rational approximation of pi, are infeasible).
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14469] Inaccurate j0f function
Date: Mon, 03 Feb 2020 15:12:00 -0000
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--- Comment #7 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
<https://sourceware.org/ml/libc-alpha/2013-03/msg00345.html> has my
comments on these thresholds in various Bessel function implementations
(note that in some cases they also serve to avoid spurious underflow /
overflow exceptions, so removing such checks in one place would require
adding them in another).
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Subject: [Bug math/14469] Inaccurate j0f function
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--- Comment #8 from Paul Zimmermann <zimmerma+gcc at loria dot fr> ---
with the change proposed in comment #5, the maximal ulp error drops from
4760682496 to 6177902, and the number of binary32 inputs which give an error of
2 ulps or more drops from 310998452 to 269351612 (13% less).
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug math/14469] Inaccurate j0f function
Date: Mon, 03 Feb 2020 16:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=14469
--- Comment #9 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
I would expect removing that check to result in spurious overflow and
underflow exceptions where pzerof and qzerof compute 1/(x*x), as they
don't have any other checks to avoid such exceptions. Replacing the
0x48000000 checks for float by something like 0x5c000000 should be
heuristically safe (although the functions could still do with rewrites
along the lines described by Harrison).
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>From glibc-bugs-return-47240-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 03 16:12:25 2020
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Subject: =?UTF-8?B?W0J1ZyBsaWJjLzI1NDk3XSBOZXc6IGZzZWVrKOKApiwg4oCmLCBTRUVLX1NF?= =?UTF-8?B?VCkgY2F1c2VzIHJlYWRpbmcgb3ZlciB0aGUgc2tpcHBlZCByYW5nZQ==?Date: Mon, 03 Feb 2020 16:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25497
Bug ID: 25497
Summary: fseek(…, …, SEEK_SET) causes reading over the skipped
range
Product: glibc
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
CC: drepper.fsp at gmail dot com
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When fseek called, it in turn calls lseek (as expected), and then calls read()
over the skipped range (as not expected). In the best case, it's a waste of CPU
and IO resources. In the worst case, this causes an application that tried to
skip too big range to just hang on fseek().
This is a follow up to discussion at
https://sourceware.org/ml/libc-help/2020-01/threads.html#00046
# Steps to reproduce (in terms of terminal commands)
$ cat test.c
#include <fcntl.h>
#include <stdio.h>
int main() {
FILE* f = fopen("/tmp/test.c", "r");
if (!f)
perror("");
fseek(f, 30, SEEK_SET);
}
$ gcc test.c -o a
$ strace ./a 2>&1 | tail
mprotect(0x7fd2c36c1000, 4096, PROT_READ) = 0
munmap(0x7fd2c3628000, 451693) = 0
brk(NULL) = 0x557c9e900000
brk(0x557c9e921000) = 0x557c9e921000
openat(AT_FDCWD, "/tmp/test.c", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=155, ...}) = 0
lseek(3, 0, SEEK_SET) = 0
read(3, "#include <fcntl.h>\n#include <s", 30) = 30
exit_group(0) = ?
+++ exited with
## Expected
There's no read() call after lseek()
## Actual
Both lseek() and read() are called.
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>From glibc-bugs-return-47241-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 03 16:19:49 2020
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Carlos O'Donell <carlos at redhat dot com> changed:
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
I'm not sure what the consequences are for optimizing away the read as part of
the FILE buffer management. That is the question that would need to be answered
here before we could do something like this.
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>From glibc-bugs-return-47242-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 03 17:11:08 2020
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
The read is required to sychronize the underlying file position, while keeping
the stdio buffer aligned on a block boundary.
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>From glibc-bugs-return-47243-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 03 18:05:06 2020
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--- Comment #3 from Hi-Angel <hi-angel at yandex dot ru> ---
(In reply to Andreas Schwab from comment #2)
> The read is required to sychronize the underlying file position, while
> keeping the stdio buffer aligned on a block boundary.
Though I don't know why it's necessary, but would it be possible in this case
to at least only read just one block, that is the last block before the
position a program is trying to set with fseek()? So at least, when a program
tries to do fseek(…,0x80000000, SEEK_SET), it wouldn't hang on fseek trying to
read half a terabyte of data.
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>From glibc-bugs-return-47244-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 03 19:47:35 2020
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Where do you see it reading more than one block?
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>From glibc-bugs-return-47245-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 03 22:47:27 2020
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--- Comment #5 from Hi-Angel <hi-angel at yandex dot ru> ---
(In reply to Andreas Schwab from comment #4)
> Where do you see it reading more than one block?
Oh, I stand corrected, on glibc 2.30 this is no longer reproducible. Though
it's reproducible on glibc 2.27, just 3 versions ago. Reproducing that simply
requires one to run something like `sudo hexdump -C /dev/sda -s 0xa8000f9000 -n
1`: if it hangs, it's because `fseek()` hexdump is using tries to read
0xa8000f9000 amount of data.
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>From glibc-bugs-return-47246-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 04 05:16:11 2020
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Wei-Lun Chao <bluebat at member dot fsf.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|2.30 |2.31
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug math/25487] sinl() stack corruption from crafted input
Date: Tue, 04 Feb 2020 13:48:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
This is a pseudo-zero. Bug 4586 (relating to handling of such values in
printf) was marked INVALID, but did get fixed at some point, and I think
we now consider such values should not cause a buffer overrun, although
they need not be consistently handled like any particular valid
floating-point representation. So we should make sure __kernel_rem_pio2
only gets called with arguments where the high significand bit is set as
it probably expects, even for pseudo-zero and pseudo-normal long double
arguments to the original function.
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>From glibc-bugs-return-47249-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 04 14:02:26 2020
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Subject: [Bug libc/4586] printf crashes on some 'long double' values
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>From glibc-bugs-return-47248-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 04 14:02:22 2020
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Subject: [Bug math/25487] sinl() stack corruption from crafted input
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| |illa/show_bug.cgi?id=4586
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>From glibc-bugs-return-47250-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 04 16:44:41 2020
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Subject: [Bug localedata/13605] shn_MM: new Shan locale
Date: Tue, 04 Feb 2020 16:44:00 -0000
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--- Comment #15 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to kokoye2007 from comment #12)
> Its small fix - 2012 version vs 2020 version
If it is a small fix, it would be much nicer to have a patch instead
of a complete new file with lots of changes which are just reformatting.
That would make it easier to see what has really changed.
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>From glibc-bugs-return-47251-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 04 21:58:53 2020
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Subject: [Bug build/25506] New: configure: broken detection of STT_GNU_IFUNC when GCC defaults to PIE
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Bug ID: 25506
Summary: configure: broken detection of STT_GNU_IFUNC when GCC
defaults to PIE
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: build
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When GCC defaults to PIE, compiling the conftest.S that is used to detect for
assembler and linker STT_GNU_IFUNC support emits a relocation. This causes a
false positive in the detection.
Example on riscv64 with a toolchain defaulting to PIE:
configure:4009: checking for assembler and linker STT_GNU_IFUNC support
Relocation section '.rela.dyn' at offset 0x268 contains 1 entry:
Offset Info Type Sym. Value Sym. Name +
Addend
000000002000 000000000003 R_RISCV_RELATIVE 280
configure:4040: result: yes
And with a toolchain not default to PIE:
configure:4009: checking for assembler and linker STT_GNU_IFUNC support
There are no relocations in this file.
configure:4040: result: no
The same is reproducible on MIPS.
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>From glibc-bugs-return-47252-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 05 06:16:38 2020
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Subject: [Bug build/25506] configure: broken detection of STT_GNU_IFUNC when GCC defaults to PIE
Date: Wed, 05 Feb 2020 06:16:00 -0000
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Fangrui Song <i at maskray dot me> changed:
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--- Comment #1 from Fangrui Song <i at maskray dot me> ---
R_MIPS_IRELATIVE is not defined (no non-preemptible IFUNC support)
and
no libc supports preemptible IFUNC...
RISC-V is in the same boat..
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>From glibc-bugs-return-47253-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 05 14:28:39 2020
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Subject: [Bug localedata/25508] New: mfe_MU locale: Correct orthography for the name of days and months into the official Kreol Morisien Orthography
Date: Wed, 05 Feb 2020 14:28:00 -0000
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Bug ID: 25508
Summary: mfe_MU locale: Correct orthography for the name of
days and months into the official Kreol Morisien
Orthography
Product: glibc
Version: 2.31
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Copied from (better make a new bug for this instead of reopening an old one):
https://sourceware.org/bugzilla/show_bug.cgi?id=21971
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>From glibc-bugs-return-47254-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 05 14:28:47 2020
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----------------------------------------------------------------------------
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>From glibc-bugs-return-47255-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 05 14:29:57 2020
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--- Comment #1 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Denis Jean <later01@gmail.com> write:
The correct orthography for Kreol Morisien(Mauritian Creole) can be verified at
http://www.cleverdodo.mu/userfiles/media/Lortograf%20Kreol%20Morisien.pdf
Section 6.1.1
This is the official language that is being taught at school and the University
of Mauritius, using this document as guide. This document has precedence over
any other according to lecturers even over the official dictionary. The
language is young and not set in stones, but for the days and months, the
dictionary and AKM orthography follow the same rules.
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Subject: [Bug localedata/25508] mfe_MU locale: Correct orthography for the name of days and months into the official Kreol Morisien Orthography
Date: Wed, 05 Feb 2020 14:39:00 -0000
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--- Comment #2 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12260
--> https://sourceware.org/bugzilla/attachment.cgi?id=12260&action=edit
mfe_MU.new
The new locale file, copied from:
https://sourceware.org/bugzilla/show_bug.cgi?id=21971#c6
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Subject: [Bug localedata/21971] Added New Locale for mfe_MU
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution|--- |FIXED
--- Comment #10 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Rafal Luzynski from comment #9)
> For multiple reasons I suggest filing a new bug report rather than reopening
> this old one.
Closing as FIXED again.
New bug is here:
https://sourceware.org/bugzilla/show_bug.cgi?id=25508
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Subject: [Bug localedata/25508] mfe_MU locale: Correct orthography for the name of days and months into the official Kreol Morisien Orthography
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--- Comment #3 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Diff between the new and the old file:
$ diff -u mfe_MU mfe_MU.new
--- mfe_MU 2019-10-01 11:20:59.528309271 +0200
+++ mfe_MU.new 2020-02-05 15:32:42.887282654 +0100
@@ -12,14 +12,14 @@
% Contributed by Akhilesh Kumar <akhilesh.k@samsung.com>
LC_IDENTIFICATION
-title "Morisyen locale for Mauritius"
+title "Morisien locale for Mauritius"
source "Samsung Electronics Co., Ltd."
address ""
contact ""
email "akhilesh.k@samsung.com"
tel ""
fax ""
-language "Morisyen"
+language "Morisien"
territory "Mauritius"
revision "1.0"
date "2017-08-18"
@@ -43,52 +43,51 @@
copy "i18n"
END LC_CTYPE
-% http://demo.icu-project.org/icu-bin/locexp?d_=en&_=mfe
LC_TIME
% Abbreviated weekday names
-abday "dim";/
- "lin";/
- "mar";/
- "mer";/
- "ze";/
- "van";/
- "sam"
+abday "Dim";/
+ "Lin";/
+ "Mar";/
+ "Mer";/
+ "Ze";/
+ "Van";/
+ "Sam"
%
% Full weekday names
-day "dimans";/
- "lindi";/
- "mardi";/
- "merkredi";/
- "zedi";/
- "vandredi";/
- "samdi"
+day "Dimans";/
+ "Lindi";/
+ "Mardi";/
+ "Merkredi";/
+ "Zedi";/
+ "Vandredi";/
+ "Samdi"
% Abbreviated month names
-abmon "zan";/
- "fev";/
- "mar";/
- "avr";/
- "me";/
- "zin";/
- "zil";/
- "out";/
- "sep";/
- "okt";/
- "nov";/
- "des"
+abmon "Zan";/
+ "Fev";/
+ "Mar";/
+ "Avr";/
+ "Me";/
+ "Zien";/
+ "Zil";/
+ "Out";/
+ "Sep";/
+ "Okt";/
+ "Nov";/
+ "Des"
%
% Full month names
-mon "zanvie";/
- "fevriye";/
- "mars";/
- "avril";/
- "me";/
- "zin";/
- "zilye";/
- "out";/
- "septam";/
- "oktob";/
- "novam";/
- "desam"
+mon "Zanvie";/
+ "Fevriye";/
+ "Mars";/
+ "Avril";/
+ "Me";/
+ "Zien";/
+ "Zilie";/
+ "Out";/
+ "Septam";/
+ "Oktob";/
+ "Novam";/
+ "Desam"
%
d_t_fmt "%a %d %b %Y %T %Z"
d_fmt "%d//%m//%y"
@@ -170,14 +169,14 @@
LC_ADDRESS
postal_fmt "%f%N%h%s%N%T"
-country_name "Moris"
+country_name "Mauritius"
country_ab2 "MU"
country_ab3 "MUS"
country_num 480
%
https://en.wikipedia.org/wiki/List_of_international_vehicle_registration_codes
country_car "MS"
country_isbn "978-613,978-620,978-99903,978-99949"
-lang_name "kreol morisien"
+lang_name "Kreol Morisien"
lang_term "mfe"
lang_lib "mfe"
END LC_ADDRESS
$
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #78 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
Hey dear Mike
I have downloaded new glibc 2.31 release but couldn't find ckb_iq localedata
there? it was not planned to be there?
best regards.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #79 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
Created attachment 12261
--> https://sourceware.org/bugzilla/attachment.cgi?id=12261&action=edit
fixed typo in wednesday name in kurdish
Just a typo now fixed, replaced U+0624 with U+0627 in the name of Wednesday in
kurdish.
Best Regards.
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #80 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
Created attachment 12262
--> https://sourceware.org/bugzilla/attachment.cgi?id=12262&action=edit
Added reorder-end command which missing
Adding reorder-end because couldn't compile it with this error exist.
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Subject: [Bug nptl/25066] FAIL: nptl/tst-tls1 on hppa
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--- Comment #3 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 Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=43598ef6e2b1a8226db9f83dac9e93224306e242
commit 43598ef6e2b1a8226db9f83dac9e93224306e242
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.
(cherry picked from commit e4c23a029a54c8c7788eff9ca771a01cccaaa0ce)
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From: "maiku.fabian at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Thu, 06 Feb 2020 00:20:00 -0000
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--- Comment #81 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Jwtiyar Nariman from comment #78)
> Hey dear Mike
> I have downloaded new glibc 2.31 release but couldn't find ckb_iq localedata
> there? it was not planned to be there?
Yes, of course, that’s what I wrote in
https://sourceware.org/bugzilla/show_bug.cgi?id=9809#c75
2.31 was already in code freeze, I could push this only *after* 2.31 was
released. Therefore, the target milesstone of this bug is set to 2.32.
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>From glibc-bugs-return-47264-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 06 00:26:28 2020
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From: "maiku.fabian at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Thu, 06 Feb 2020 00:26:00 -0000
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--- Comment #82 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Jwtiyar Nariman from comment #80)
> Created attachment 12262 [details]
> Added reorder-end command which missing
>
> Adding reorder-end because couldn't compile it with this error exist.
Not needed anymore, I rewrote the whole LC_COLLATE section, see
https://sourceware.org/bugzilla/show_bug.cgi?id=9809#c49
If you want to do further changes, please look at what is in current
git master:
https://sourceware.org/git/?p=glibc.git;a=blob_plain;f=localedata/locales/ckb_IQ;hb=refs/heads/master
And then sent a *patch* not the complete new file.
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>From glibc-bugs-return-47265-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 06 01:10:47 2020
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From: "mariogalindoq at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25512] New: std::call_once not working as expected when the invocated function thwows an exception.
Date: Thu, 06 Feb 2020 01:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25512
Bug ID: 25512
Summary: std::call_once not working as expected when the
invocated function thwows an exception.
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: mariogalindoq at hotmail dot com
CC: drepper.fsp at gmail dot com
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Gcc has answered that this bug must be reported to you!
cppreference.com (https://en.cppreference.com/w/cpp/thread/call_once) says:
If that invocation throws an exception, it is propagated to the caller of
call_once, and the flag is not flipped so that another call will be attempted
(such call to call_once is known as exceptional).
This is not working with gcc but with clang.
The example that appears in cppreference do not run with gcc. In particular:
#include <iostream>
#include <thread>
#include <mutex>
std::once_flag flag2;
void may_throw_function(bool do_throw)
{
if (do_throw) {
std::cout << "throw: call_once will retry\n"; // this may appear more than
once
throw std::exception();
}
std::cout << "Didn't throw, call_once will not attempt again\n"; //
guaranteed once
}
void do_once(bool do_throw)
{
try {
std::call_once(flag2, may_throw_function, do_throw);
}
catch (...) {
}
}
int main()
{
std::thread t1(do_once, true);
std::thread t2(do_once, true);
std::thread t3(do_once, false);
std::thread t4(do_once, true);
t1.join();
t2.join();
t3.join();
t4.join();
}
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Subject: [Bug libc/25512] std::call_once not working as expected when the invocated function thwows an exception.
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What |Removed |Added
----------------------------------------------------------------------------
CC| |mariogalindoq at hotmail dot com
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Subject: [Bug dynamic-link/22851] ld library ELF load error
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Zhipeng Xie <xiezhipeng1 at huawei dot com> changed:
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>From glibc-bugs-return-47268-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 07 12:55:16 2020
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Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
Assignee|unassigned at sourceware dot org |fweimer at redhat dot com
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>From glibc-bugs-return-47269-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Feb 08 08:20:27 2020
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Subject: [Bug dynamic-link/22851] ldd should protect against programs whose segments overlap with the loader itself
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ld library ELF load error |ldd should protect against
| |programs whose segments
| |overlap with the loader
| |itself
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>From glibc-bugs-return-47270-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sat Feb 08 19:19:17 2020
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Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
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--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
Patches posted: https://www.sourceware.org/ml/libc-alpha/2020-02/msg00176.html
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https://sourceware.org/bugzilla/show_bug.cgi?id=25521
Bug ID: 25521
Summary: hurd: support shared-memory synchronization primitives
Product: glibc
Version: unspecified
Status: NEW
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Priority: P2
Component: hurd
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mutexes, barriers, etc. would welcome setpshared support.
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>From glibc-bugs-return-47272-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Feb 09 17:54:54 2020
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Subject: [Bug hurd/25522] New: hurd: support locking protocol
Date: Sun, 09 Feb 2020 17:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25522
Bug ID: 25522
Summary: hurd: support locking protocol
Product: glibc
Version: unspecified
Status: NEW
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Priority: P2
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i.e. pthread_mutexattr_setprotocol
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>From glibc-bugs-return-47273-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Feb 09 18:45:55 2020
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From: "i.swbugs at xen0n dot name" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] New: MIPS/Linux inline syscall template is miscompiled
Date: Sun, 09 Feb 2020 18:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25523
Bug ID: 25523
Summary: MIPS/Linux inline syscall template is miscompiled
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
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The inline syscall template for MIPS/Linux looks like something like this:
> register long __a0 asm ("$4") = (long) (arg1);
> register long __a1 asm ("$5") = (long) (arg2);
> register long __a2 asm ("$6") = (long) (arg3);
According to [GCC documentation][1], this is the wrong way of assigning values
to certain registers. Indeed it gets mis-compiled, for example part of
__spawni_child invoking setresuid(-1, uid, -1) becomes this:
> (snip -- jalr t9 and nop directly above, that's getuid)
> 113ac4: 0002283c dsll32 a1,v0,0x0
> 113ac8: 0005283e dsrl32 a1,a1,0x0
> 113acc: 2406ffff li a2,-1
> 113ad0: 240213fb li v0,5115
> 113ad4: 0000000c syscall
> (snip)
Notice only $a1 and $a2 gets loaded, and $a0 is trashed by the preceding call
(not to mention it never got set in the first place). This for example breaks
the recently released GNU make 4.3, which now prefers posix_spawn over its
traditional fork/exec flow. Example stack trace is like this:
> (snip -- inside __spawni_child)
> [pid 572746] getuid() = 250
> [pid 572746] setresuid(4154097408, 250, -1) = -1 EPERM (Operation not permitted)
> [pid 572746] exit_group(127) = ?
> [pid 572746] +++ exited with 127 +++
This is tested on Loongson 3A4000 (Gentoo Linux, glibc 2.30 native build with
gcc 9.2.0).
[1]: https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html
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>From glibc-bugs-return-47274-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Feb 09 19:08:56 2020
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sun, 09 Feb 2020 19:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25523
--- Comment #1 from WANG Xuerui <i.swbugs at xen0n dot name> ---
Created attachment 12276
--> https://sourceware.org/bugzilla/attachment.cgi?id=12276&action=edit
minimal reproduction example
Minimal reproduction case, reduced from pre-processed
sysdeps/unix/sysv/linux/spawni.c.
Compile with at least -O1, to see the supposed assignment to $a0 completely
optimized out.
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>From glibc-bugs-return-47275-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Feb 09 22:34:04 2020
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Subject: [Bug hurd/23819] hurd: Add C11 thread support
Date: Sun, 09 Feb 2020 22:34:00 -0000
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Samuel Thibault <samuel.thibault@ens-lyon.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Version|unspecified |2.32
Resolution|--- |FIXED
--- Comment #1 from Samuel Thibault <samuel.thibault@ens-lyon.org> ---
This was commited today.
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>From glibc-bugs-return-47276-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Feb 09 22:35:05 2020
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Subject: [Bug hurd/23819] hurd: Add C11 thread support
Date: Sun, 09 Feb 2020 22:35:00 -0000
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Samuel Thibault <samuel.thibault@ens-lyon.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|2.32 |unspecified
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--- Comment #2 from Samuel Thibault <samuel.thibault@ens-lyon.org> ---
Fix target milestone
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>From glibc-bugs-return-47277-listarch-glibc-bugs=sources.redhat.com@sourceware.org Sun Feb 09 22:43:46 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug hurd/25524] New: hurd: Support sem_open
Date: Sun, 09 Feb 2020 22:43:00 -0000
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Bug ID: 25524
Summary: hurd: Support sem_open
Product: glibc
Version: unspecified
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Severity: normal
Priority: P2
Component: hurd
Assignee: unassigned at sourceware dot org
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This is probably related with #25521 (hurd: support shared-memory
synchronization primitives)
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>From glibc-bugs-return-47278-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 10 01:01:15 2020
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From: "xiezhipeng1 at huawei dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/22851] ldd should protect against programs whose segments overlap with the loader itself
Date: Mon, 10 Feb 2020 01:01:00 -0000
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--- Comment #8 from Zhipeng Xie <xiezhipeng1 at huawei dot com> ---
Hi, how about this patch? It will return error when loading invalid segments.
https://sourceware.org/ml/libc-alpha/2020-02/msg00113.html
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>From glibc-bugs-return-47279-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 10 12:06:09 2020
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-02-10
CC| |adhemerval.zanella at linaro dot o
| |rg
Assignee|unassigned at sourceware dot org |adhemerval.zanella at linaro dot o
| |rg
Ever confirmed|0 |1
--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
It seems that only mips, but also microblaze, riscv, s390, and sparc also
defines their INTERNAL_SYSCALL macros without considering its argument setting
might clobber following assignments.
I will check this out.
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>From glibc-bugs-return-47280-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 10 15:32:49 2020
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Mon, 10 Feb 2020 15:32:00 -0000
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--- Comment #3 from WANG Xuerui <i.swbugs at xen0n dot name> ---
I've posted a patch fixing the bug for MIPS yesterday:
https://sourceware.org/ml/libc-alpha/2020-02/msg00206.html; other architectures
are not touched at the moment.
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>From glibc-bugs-return-47281-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 10 17:12:09 2020
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Subject: [Bug libc/25436] aarch64: Mitigating speculative execution beyond SVC
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Szabolcs Nagy <nsz at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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CC| |nsz at gcc dot gnu.org
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--- Comment #2 from Szabolcs Nagy <nsz at gcc dot gnu.org> ---
i waited for some time on the libc-alpha thread but there
does not seem to be an explanation what we should mitigate,
the proposed fix does not solve the problem described, has
significant performance impact and there seems to be no
privilege escalation or information leak that glibc might
care about. please open a new bug with relevant information
if there is something to be done.
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Thomas Perret <thomas.perret+glibc at gresille dot org> changed:
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| |e.org
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Tue, 11 Feb 2020 09:16:00 -0000
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--- Comment #83 from Mike FABIAN <maiku.fabian at gmail dot com> ---
(In reply to Jwtiyar Nariman from comment #79)
> Created attachment 12261 [details]
> fixed typo in wednesday name in kurdish
>
> Just a typo now fixed, replaced U+0624 with U+0627 in the name of Wednesday
> in kurdish.
>
> Best Regards.
$ git diff
diff --git a/localedata/locales/ckb_IQ b/localedata/locales/ckb_IQ
index a18ff69cb7..238c381edf 100644
--- a/localedata/locales/ckb_IQ
+++ b/localedata/locales/ckb_IQ
@@ -124,7 +124,7 @@ abday "<U0634><U06D5><U0645>";/
day "<U06CC><U06D5><U0643><U0634><U06D5><U0645><U0645><U06D5>";/
"<U062F><U0648><U0648><U0634><U06D5><U0645><U0645><U06D5>";/
"<U0633><U06CE><U0634><U06D5><U0645><U0645><U06D5>";/
- "<U0686><U0648><U0624><U0631><U0634><U06D5><U0645><U0645><U06D5>";/
+ "<U0686><U0648><U0627><U0631><U0634><U06D5><U0645><U0645><U06D5>";/
"<U067E><U06CE><U0646><U062C><U0634><U06D5><U0645><U0645><U06D5>";/
"<U0647><U06D5><U06CC><U0646><U06CC>";/
"<U0634><U06D5><U0645><U0645><U06D5>"
lines 1-13/13 (END)
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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--- Comment #84 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=eb948facd894e66429e2e170043b7d36fe445a8d
commit eb948facd894e66429e2e170043b7d36fe445a8d
Author: Mike FABIAN <mfabian@redhat.com>
Date: Tue Feb 11 10:17:12 2020 +0100
Fix typo in the name for Wednesday in Kurdish [BZ #9809]
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Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
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Mike FABIAN <maiku.fabian at gmail dot com> changed:
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--- Comment #85 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Fixed in current master.
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Subject: [Bug localedata/22525] or_IN LC_COLLATE does not use copy "iso14651_t1"
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--- Comment #2 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Fixed in current master.
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Subject: [Bug localedata/25532] New: Updates to the shn_MM locale
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Bug ID: 25532
Summary: Updates to the shn_MM locale
Product: glibc
Version: 2.31
Status: NEW
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Priority: P2
Component: localedata
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Reporter: maiku.fabian at gmail dot com
CC: libc-locales at sourceware dot org
Target Milestone: ---
Better to have a new bug for this. Copied from:
https://sourceware.org/bugzilla/show_bug.cgi?id=13605
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--- Comment #1 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12284
--> https://sourceware.org/bugzilla/attachment.cgi?id=12284&action=edit
shn_MM
Copied from:
https://sourceware.org/bugzilla/show_bug.cgi?id=13605#c14
https://sourceware.org/bugzilla/attachment.cgi?id=12189
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>From glibc-bugs-return-47293-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 11 12:32:27 2020
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Subject: [Bug localedata/25532] Updates to the shn_MM locale
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--- Comment #2 from Mike FABIAN <maiku.fabian at gmail dot com> ---
In future, open a new bug please for locale updates
instead of reopening an old one.
And, it would be much nicer to have a patch instead
of a complete new file with lots of changes which are just reformatting.
That would make it easier to see what has really changed.
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>From glibc-bugs-return-47294-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 11 12:36:52 2020
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Subject: [Bug localedata/25532] Updates to the shn_MM locale
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--- Comment #3 from Mike FABIAN <maiku.fabian at gmail dot com> ---
Created attachment 12285
--> https://sourceware.org/bugzilla/attachment.cgi?id=12285&action=edit
0001-Updates-to-the-shn_MM-locale-BZ-25532.patch
Here are the differences as a patch (I removed the stuff which was just
whitespace changes and moving LC_* sections around to see what really changed).
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>From glibc-bugs-return-47295-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 11 12:46:05 2020
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Subject: [Bug localedata/25508] mfe_MU locale: Correct orthography for the name of days and months into the official Kreol Morisien Orthography
Date: Tue, 11 Feb 2020 12:46:00 -0000
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--- Comment #4 from Mike FABIAN <maiku.fabian at gmail dot com> ---
-country_name "Moris"
+country_name "Mauritius"
This change is probably wrong because country_name should
contain the name of the country in the language of this locale, i.e. in Kreol
Morisien, not in English. The English name of the country is in:
territory "Mauritius"
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Subject: [Bug localedata/25508] mfe_MU locale: Correct orthography for the name of days and months into the official Kreol Morisien Orthography
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--- Comment #5 from Mike FABIAN <maiku.fabian at gmail dot com> ---
-language "Morisyen"
+language "Morisien"
https://en.wikipedia.org/wiki/Mauritian_Creole says:
> Mauritian Creole or Morisien or formerly Morisyen (Mauritian Creole: kreol morisien
So this change is probaly OK, "Morisien" seems to be the newer spelling.
CLDR still has "Morisyen:
https://github.com/unicode-org/cldr/blob/master/common/main/en.xml#L380
<language type="mfe">Morisyen</language>
So this should probably be fixed in CLDR as well.
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Subject: [Bug localedata/25508] mfe_MU locale: Correct orthography for the name of days and months into the official Kreol Morisien Orthography
Date: Tue, 11 Feb 2020 12:56:00 -0000
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--- Comment #6 from Mike FABIAN <maiku.fabian at gmail dot com> ---
All other changes seem to be upper casing the first letter of
the words (for the days of the week for example). I am not sure about these
changes, CLDR has all of these in lower case.
-lang_name "kreol morisien"
+lang_name "Kreol Morisien"
Both CLDR and Wikipedia have this in lower case.
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Subject: [Bug dynamic-link/22851] ldd should protect against programs whose segments overlap with the loader itself
Date: Tue, 11 Feb 2020 14:34:00 -0000
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--- Comment #9 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Zhipeng Xie from comment #8)
> Hi, how about this patch? It will return error when loading invalid segments.
>
> https://sourceware.org/ml/libc-alpha/2020-02/msg00113.html
Please see my thoughts here:
https://www.sourceware.org/ml/libc-alpha/2019-12/msg00634.html
https://www.sourceware.org/ml/libc-alpha/2020-02/msg00385.html
I don't think the proposed patches are correct, sorry.
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Subject: [Bug malloc/25533] New: dlopen with RTLD_DEEPBIND crashes when using custom memory manager
Date: Tue, 11 Feb 2020 17:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25533
Bug ID: 25533
Summary: dlopen with RTLD_DEEPBIND crashes when using custom
memory manager
Product: glibc
Version: 2.12
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: malloc
Assignee: unassigned at sourceware dot org
Reporter: rajpal.gusain at gmail dot com
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Created attachment 12288
--> https://sourceware.org/bugzilla/attachment.cgi?id=12288&action=edit
Test case
After spending good amount of time on a crash which originates from third party
software which is complete blackbox, I finally understand what went wrong and I
have created a tiny test case for it.
Steps to reproduce:
% untar
% make all TCMALLOC_STATIC_LIB=
% a.out
And it crashes like this
*** glibc detected *** ./a.out: free(): invalid pointer: 0x0000000001bc6018 ***
======= Backtrace: =========
/lib64/libc.so.6[0x3250a75e5e]
/lib64/libc.so.6[0x3250a78cad]
./libtest.so(destroy+0x18)[0x7f7770afa1fb]
./a.out[0x4042e1]
/lib64/libc.so.6(__libc_start_main+0x100)[0x3250a1ed20]
./a.out[0x4040c9]
======= Memory map: ========
00400000-00403000 r--p 00000000 08:03 669993
/tmp/small/a.out
00403000-00423000 r-xp 00003000 08:03 669993
/tmp/small/a.out
00423000-00430000 r--p 00023000 08:03 669993
/tmp/small/a.out
00431000-00432000 r--p 00030000 08:03 669993
/tmp/small/a.out
00432000-00433000 rw-p 00031000 08:03 669993
/tmp/small/a.out
00433000-005df000 rw-p 00000000 00:00 0
013b3000-01cd5000 rw-p 00000000 00:00 0 [heap]
3250600000-3250620000 r-xp 00000000 08:03 395074
/lib64/ld-2.12.so
3250820000-3250821000 r--p 00020000 08:03 395074
/lib64/ld-2.12.so
3250821000-3250822000 rw-p 00021000 08:03 395074
/lib64/ld-2.12.so
3250822000-3250823000 rw-p 00000000 00:00 0
3250a00000-3250b8b000 r-xp 00000000 08:03 395091
/lib64/libc-2.12.so
3250b8b000-3250d8a000 ---p 0018b000 08:03 395091
/lib64/libc-2.12.so
3250d8a000-3250d8e000 r--p 0018a000 08:03 395091
/lib64/libc-2.12.so
3250d8e000-3250d90000 rw-p 0018e000 08:03 395091
/lib64/libc-2.12.so
3250d90000-3250d94000 rw-p 00000000 00:00 0
3250e00000-3250e17000 r-xp 00000000 08:03 426826
/lib64/libpthread-2.12.so
3250e17000-3251017000 ---p 00017000 08:03 426826
/lib64/libpthread-2.12.so
3251017000-3251018000 r--p 00017000 08:03 426826
/lib64/libpthread-2.12.so
3251018000-3251019000 rw-p 00018000 08:03 426826
/lib64/libpthread-2.12.so
3251019000-325101d000 rw-p 00000000 00:00 0
3251200000-3251202000 r-xp 00000000 08:03 426837
/lib64/libdl-2.12.so
3251202000-3251402000 ---p 00002000 08:03 426837
/lib64/libdl-2.12.so
3251402000-3251403000 r--p 00002000 08:03 426837
/lib64/libdl-2.12.so
3251403000-3251404000 rw-p 00003000 08:03 426837
/lib64/libdl-2.12.so
3251e00000-3251e83000 r-xp 00000000 08:03 426839
/lib64/libm-2.12.so
3251e83000-3252082000 ---p 00083000 08:03 426839
/lib64/libm-2.12.so
3252082000-3252083000 r--p 00082000 08:03 426839
/lib64/libm-2.12.so
3252083000-3252084000 rw-p 00083000 08:03 426839
/lib64/libm-2.12.so
3255200000-3255216000 r-xp 00000000 08:03 426840
/lib64/libgcc_s-4.4.7-20120601.so.1
3255216000-3255415000 ---p 00016000 08:03 426840
/lib64/libgcc_s-4.4.7-20120601.so.1
3255415000-3255416000 rw-p 00015000 08:03 426840
/lib64/libgcc_s-4.4.7-20120601.so.1
7f7770744000-7f7770749000 rw-p 00000000 00:00 0
7f7770749000-7f77708d1000 r-xp 00000000 00:23 1837379
/tool/gcc/8.3.0/lib64/libstdc++.so.6.0.25
7f77708d1000-7f7770ad0000 ---p 00188000 00:23 1837379
/tool/gcc/8.3.0/lib64/libstdc++.so.6.0.25
7f7770ad0000-7f7770adb000 r--p 00187000 00:23 1837379
/tool/gcc/8.3.0/lib64/libstdc++.so.6.0.25
7f7770adb000-7f7770add000 rw-p 00192000 00:23 1837379
/tool/gcc/8.3.0/lib64/libstdc++.so.6.0.25
7f7770add000-7f7770ae2000 rw-p 00000000 00:00 0
7f7770af8000-7f7770af9000 rw-p 00000000 00:00 0
7f7770af9000-7f7770afa000 r--p 00000000 08:03 669992
/tmp/small/libtest.so
7f7770afa000-7f7770afb000 r-xp 00001000 08:03 669992
/tmp/small/libtest.so
7f7770afb000-7f7770afc000 r--p 00002000 08:03 669992
/tmp/small/libtest.so
7f7770afc000-7f7770afd000 r--p 00002000 08:03 669992
/tmp/small/libtest.so
7f7770afd000-7f7770afe000 rw-p 00003000 08:03 669992
/tmp/small/libtest.so
7f7770afe000-7f7770aff000 rw-p 00000000 00:00 0
7ffc3fc25000-7ffc3fc3a000 rw-p 00000000 00:00 0
[stack]
7ffc3fcdc000-7ffc3fcdd000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
[vsyscall]
Abort
Reason for crash is that malloc/free definition from shared library libtest.so
comes from libc.so while malloc definition from shared library libc.so (for
strdup) comes from tcmalloc, and when libc free tries to free tc alloced block,
it crashes.
It looks like if RTLD_DEEPBIND has to stay, the only way to fix this issue is
through use of malloc hooks but apparently it's going to go away soon. How else
can this issue be addressed ?
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Subject: [Bug malloc/25533] dlopen with RTLD_DEEPBIND crashes when using custom memory manager
Date: Tue, 11 Feb 2020 17:32:00 -0000
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--- Comment #1 from gusain <rajpal.gusain at gmail dot com> ---
Same issue filed against gperftools
https://github.com/gperftools/gperftools/issues/1148
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Subject: [Bug malloc/25533] dlopen with RTLD_DEEPBIND crashes when using custom memory manager
Date: Tue, 11 Feb 2020 17:51:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #3 from Carlos O'Donell <carlos at redhat dot com> ---
I'm marking this as RESOLVED/INVALID. If you think this is wrong, please reopen
the ticket and provide a self-contained test case explaining your use case, the
expected behaviour, and the observed beahviour.
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Subject: [Bug malloc/25533] dlopen with RTLD_DEEPBIND crashes when using custom memory manager
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |carlos at redhat dot com
--- Comment #2 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to gusain from comment #0)
> It looks like if RTLD_DEEPBIND has to stay, the only way to fix this issue
> is through use of malloc hooks but apparently it's going to go away soon.
> How else can this issue be addressed ?
There is nothing wrong with RTLD_DEEPBIND, it works as intended.
If you have an object that binds symbols to itself via RTLD_DEEPBIND and those
symbols mean that the object uses it's own memory allocator, and those pointers
escape and need to be freed, then this must be addressed in the design of the
application.
Pointers from one allocator should not escape to be manipulated by a different
allocator.
As I write upstream:
https://github.com/gperftools/gperftools/issues/1148
---
There are two solutions:
* Use a single malloc e.g. tcmalloc as the malloc for the entire application
i.e. don't mix allocators.
* Do not leak pointers between malloc implementations.
These are advanced topics for application design, and you cannot assume that
you can freely change allocators like this or use RTLD_DEEPBIND without
carefully architecting the application.
While glibc makes it possible to replace the system allocator it doesn't mean
that this will work in all conceivable scenarios without additional design
work. Likewise dlmopen can cause similar problems with namespaces leaking
pointers from different allocators.
---
Lastly, a "hook"-based solution has performance and design impacts on all
applications all the time, and therefore is not considered a desirable solution
even if it allows any allocator to be hooked in across all dynamic loader
namespaces (RTLD_DEEPBIND, or dlmopen).
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>From glibc-bugs-return-47303-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 11 17:52:27 2020
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Subject: [Bug malloc/25533] dlopen with RTLD_DEEPBIND crashes when using custom memory manager
Date: Tue, 11 Feb 2020 17:52:00 -0000
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--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
Sorry, meant to say RESOLVED/WONTFIX because we won't fix this due to the
implications of hooks in the system malloc.
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Subject: [Bug dynamic-link/20857] ldd and ld.so --verify is unreliable for position-dependent executables
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Zhipeng Xie <xiezhipeng1 at huawei dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |xiezhipeng1 at huawei dot com
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>From glibc-bugs-return-47305-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 08:02:31 2020
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Subject: [Bug libc/14578] fchmodat(..., AT_SYMLINK_NOFOLLOW) returns ENOTSUP on non-symlinks
Date: Wed, 12 Feb 2020 08:02:00 -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=6b89c385d8bd0700b25bac2c2d0bebe68d5cc05d
commit 6b89c385d8bd0700b25bac2c2d0bebe68d5cc05d
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jan 22 18:56:04 2020 +0100
io: Implement lchmod using fchmodat [BZ #14578]
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Subject: [Bug libc/14578] fchmodat(..., AT_SYMLINK_NOFOLLOW) returns ENOTSUP on non-symlinks
Date: Wed, 12 Feb 2020 08:02:00 -0000
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--- Comment #15 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=752dd17443e55a4535cb9e6baa4e550ede383540
commit 752dd17443e55a4535cb9e6baa4e550ede383540
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Jan 22 19:01:20 2020 +0100
Linux: Emulate fchmodat with AT_SYMLINK_NOFOLLOW using O_PATH [BZ #14578]
/proc/self/fd files are special and chmod on O_PATH descriptors
in that directory operates on the symbolic link itself (like lchmod).
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>From glibc-bugs-return-47307-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 08:03:18 2020
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Subject: [Bug libc/14578] /proc-based emulation for lchmod, fchmodat
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.32
Summary|fchmodat(..., |/proc-based emulation for
|AT_SYMLINK_NOFOLLOW) |lchmod, fchmodat
|returns ENOTSUP on |
|non-symlinks |
--- Comment #16 from Florian Weimer <fweimer at redhat dot com> ---
Fixed in glibc 2.32.
I will backport this into the release branches in a week or so.
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>From glibc-bugs-return-47308-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 11:53:26 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/14578] /proc-based emulation for lchmod, fchmodat
Date: Wed, 12 Feb 2020 11:53:00 -0000
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--- Comment #17 from Florian Weimer <fweimer at redhat dot com> ---
This appears to trigger an XFS kernel bug:
https://www.sourceware.org/ml/libc-alpha/2020-02/msg00467.html
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From: "jwtiyar at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/9809] ckb_IQ: new Kurdish Sorani locale
Date: Wed, 12 Feb 2020 17:56:00 -0000
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--- Comment #86 from Jwtiyar Nariman <jwtiyar at gmail dot com> ---
(In reply to Mike FABIAN from comment #85)
> Fixed in current master.
Thank you dear mike for everything, your help really appreciated.
Best Regards.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/16272] dlopen()ing a DT_FILTER library crashes if filtee has constructor
Date: Wed, 12 Feb 2020 18:47:00 -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 Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=eb447b7b4bd6177f876ba9420ad9e048c27bae91
commit eb447b7b4bd6177f876ba9420ad9e048c27bae91
Author: David Kilroy <David.Kilroy@arm.com>
Date: Wed Feb 12 14:28:15 2020 -0300
elf: Allow dlopen of filter object to work [BZ #16272]
There are two fixes that are needed to be able to dlopen filter
objects. First _dl_map_object_deps cannot assume that map will be at
the beginning of l_searchlist.r_list[], as filtees are inserted before
map. Secondly dl_open_worker needs to ensure that filtees get
relocated.
In _dl_map_object_deps:
* avoiding removing relocation dependencies of map by setting
l_reserved to 0 and otherwise processing the rest of the search
list.
* ensure that map remains at the beginning of l_initfini - the list
of things that need initialisation (and destruction). Do this by
splitting the copy up. This may not be required, but matches the
initialization order without dlopen.
Modify dl_open_worker to relocate the objects in new->l_inifini.
new->l_initfini is constructed in _dl_map_object_deps, and lists the
objects that need initialization and destruction. Originally the list
of objects in new->l_next are relocated. All of these objects should
also be included in new->l_initfini (both lists are populated with
dependencies in _dl_map_object_deps). We can't use new->l_prev to pick
up filtees, as during a recursive dlopen from an interposed malloc
call, l->prev can contain objects that are not ready for relocation.
Add tests to verify that symbols resolve to the filtee implementation
when auxiliary and filter objects are used, both as a normal link and
when dlopen'd.
Tested by running the testsuite on x86_64.
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/16272] dlopen()ing a DT_FILTER library crashes if filtee has constructor
Date: Wed, 12 Feb 2020 18:48:00 -0000
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |adhemerval.zanella at linaro dot o
| |rg
Resolution|--- |FIXED
--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.32.
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>From glibc-bugs-return-47312-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 22:16:48 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Wed, 12 Feb 2020 22:16:00 -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 Joseph Myers <jsm28@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=4fbba6fe904d0094ddc4284066b3860d119cbd4a
commit 4fbba6fe904d0094ddc4284066b3860d119cbd4a
Author: WANG Xuerui <git@xen0n.name>
Date: Thu Feb 13 00:57:03 2020 +0800
mips: Fix argument passing for inlined syscalls on Linux [BZ #25523]
According to [gcc documentation][1], temporary variables must be used for
the desired content to not be call-clobbered.
Fix the Linux inline syscall templates by adding temporary variables,
much like what x86 did before
(commit 381a0c26d73e0f074c962e0ab53b99a6c327066d).
Tested with gcc 9.2.0, both cross-compiled and natively on Loongson
3A4000.
[1]: https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html
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>From glibc-bugs-return-47313-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 22:19:38 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Wed, 12 Feb 2020 22:19:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
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Target Milestone|--- |2.32
--- Comment #5 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.32.
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>From glibc-bugs-return-47315-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 23:33:00 2020
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Subject: [Bug libc/4586] printf crashes on some 'long double' values
Date: Wed, 12 Feb 2020 23:33:00 -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 Joseph Myers <jsm28@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9333498794cde1d5cca518badf79533a24114b6f
commit 9333498794cde1d5cca518badf79533a24114b6f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Feb 12 23:31:56 2020 +0000
Avoid ldbl-96 stack corruption from range reduction of pseudo-zero (bug
25487).
Bug 25487 reports stack corruption in ldbl-96 sinl on a pseudo-zero
argument (an representation where all the significand bits, including
the explicit high bit, are zero, but the exponent is not zero, which
is not a valid representation for the long double type).
Although this is not a valid long double representation, existing
practice in this area (see bug 4586, originally marked invalid but
subsequently fixed) is that we still seek to avoid invalid memory
accesses as a result, in case of programs that treat arbitrary binary
data as long double representations, although the invalid
representations of the ldbl-96 format do not need to be consistently
handled the same as any particular valid representation.
This patch makes the range reduction detect pseudo-zero and unnormal
representations that would otherwise go to __kernel_rem_pio2, and
returns a NaN for them instead of continuing with the range reduction
process. (Pseudo-zero and unnormal representations whose unbiased
exponent is less than -1 have already been safely returned from the
function before this point without going through the rest of range
reduction.) Pseudo-zero representations would previously result in
the value passed to __kernel_rem_pio2 being all-zero, which is
definitely unsafe; unnormal representations would previously result in
a value passed whose high bit is zero, which might well be unsafe
since that is not a form of input expected by __kernel_rem_pio2.
Tested for x86_64.
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>From glibc-bugs-return-47314-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 23:33:00 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug math/25487] sinl() stack corruption from crafted input
Date: Wed, 12 Feb 2020 23:33:00 -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 Joseph Myers <jsm28@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9333498794cde1d5cca518badf79533a24114b6f
commit 9333498794cde1d5cca518badf79533a24114b6f
Author: Joseph Myers <joseph@codesourcery.com>
Date: Wed Feb 12 23:31:56 2020 +0000
Avoid ldbl-96 stack corruption from range reduction of pseudo-zero (bug
25487).
Bug 25487 reports stack corruption in ldbl-96 sinl on a pseudo-zero
argument (an representation where all the significand bits, including
the explicit high bit, are zero, but the exponent is not zero, which
is not a valid representation for the long double type).
Although this is not a valid long double representation, existing
practice in this area (see bug 4586, originally marked invalid but
subsequently fixed) is that we still seek to avoid invalid memory
accesses as a result, in case of programs that treat arbitrary binary
data as long double representations, although the invalid
representations of the ldbl-96 format do not need to be consistently
handled the same as any particular valid representation.
This patch makes the range reduction detect pseudo-zero and unnormal
representations that would otherwise go to __kernel_rem_pio2, and
returns a NaN for them instead of continuing with the range reduction
process. (Pseudo-zero and unnormal representations whose unbiased
exponent is less than -1 have already been safely returned from the
function before this point without going through the rest of range
reduction.) Pseudo-zero representations would previously result in
the value passed to __kernel_rem_pio2 being all-zero, which is
definitely unsafe; unnormal representations would previously result in
a value passed whose high bit is zero, which might well be unsafe
since that is not a form of input expected by __kernel_rem_pio2.
Tested for x86_64.
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>From glibc-bugs-return-47316-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 12 23:33:29 2020
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Subject: [Bug math/25487] sinl() stack corruption from crafted input
Date: Wed, 12 Feb 2020 23:33:00 -0000
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Joseph Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.32
--- Comment #3 from Joseph Myers <jsm28 at gcc dot gnu.org> ---
Fixed for 2.32.
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>From glibc-bugs-return-47317-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 13 02:35:13 2020
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From: "syq at debian dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Thu, 13 Feb 2020 02:35:00 -0000
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YunQiang Su <syq at debian dot org> changed:
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CC| |syq at debian dot org
--- Comment #6 from YunQiang Su <syq at debian dot org> ---
will it be backported to 2.30 etc?
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>From glibc-bugs-return-47318-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 13 13:44:48 2020
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Subject: [Bug librt/25544] New: [Error] fatal error: rpc/des_crypt.h: No such file or director
Date: Thu, 13 Feb 2020 13:44:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25544
Bug ID: 25544
Summary: [Error] fatal error: rpc/des_crypt.h: No such file or
director
Product: glibc
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: librt
Assignee: unassigned at sourceware dot org
Reporter: akhipatel at gmail dot com
Target Milestone: ---
Hello
My current glibc version is 2.30.
I am getting below Error with my sample test application even with my glibc is
compiled with "--enable-obsolete-rpc --enable-obsolete-nslâ€
akhilesh@DELL-BUILD10:~/P4/github/glibc$ armv7l-linux-gnueabi-gcc test.c
test.c:1:10: fatal error: rpc/des_crypt.h: No such file or directory
1 | #include <rpc/des_crypt.h>
| ^~~~~~~~~~
akhilesh@DELL-BUILD10:~/P4/github/glibc$ cat test.c
#include <rpc/des_crypt.h>
void main()
{
}
akhilesh.k@DELL-BUILD10:~/P4/github/glibc$
When i checked I found this is due to changes in glibc from 2.26 onwards also
in scripts/build-many-glibcs.py i found both options are not added for arm but
same are added in x86
170 self.add_config(arch='arm',
171 os_name='linux-gnueabihf',
172 gcc_cfg=['--with-float=hard',
'--with-cpu=arm926ej-s'],
173 extra_glibcs=[{'variant': 'v7a',
174 'ccopts': '-march=armv7-a
-mfpu=vfpv3'},
175 {'variant':
'v7a-disable-multi-arch',
176 'ccopts': '-march=armv7-a
-mfpu=vfpv3',
177 'cfg': ['--disable-multi-arch']}])
178 self.add_config(arch='armeb',
179 os_name='linux-gnueabihf',
180 gcc_cfg=['--with-float=hard',
'--with-cpu=arm926ej-s'])
181 self.add_config(arch='armeb',
182 os_name='linux-gnueabihf',
183 variant='be8',
184 gcc_cfg=['--with-float=hard',
'--with-arch=armv7-a',
185 '--with-fpu=vfpv3'])
Please let me know if this is intentional? Also how to resolve this issue?
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Subject: [Bug librt/25544] [Error] fatal error: rpc/des_crypt.h: No such file or director
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This is a deliberate change in glibc 2.28, as mentioned in the NEWS file:
* The obsolete functions encrypt, encrypt_r, setkey, setkey_r, cbc_crypt,
ecb_crypt, and des_setparity are no longer available to newly linked
binaries, and the headers <rpc/des_crypt.h> and <rpc/rpc_des.h> are no
longer installed. These functions encrypted and decrypted data with the
DES block cipher, which is no longer considered secure. Software that
still uses these functions should switch to a modern cryptography library,
such as libgcrypt.
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Already fixed in glibc 2.31.
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Subject: [Bug math/25487] sinl() stack corruption from crafted input
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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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c10acd40262486dac597001aecc20ad9d3bd0e4a
commit c10acd40262486dac597001aecc20ad9d3bd0e4a
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu Feb 13 17:01:15 2020 +0100
math/test-sinl-pseudo: Use stack protector only if available
This fixes commit 9333498794cde1d5cca518bad ("Avoid ldbl-96 stack
corruption from range reduction of pseudo-zero (bug 25487).").
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Fangrui Song <i at maskray dot me> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |adhemerval.zanella at linaro dot o
| |rg
--- Comment #5 from Fangrui Song <i at maskray dot me> ---
Found https://patches.linaro.org/patch/90572/ (via
https://github.com/ClangBuiltLinux/linux/issues/432) that Adhemerval Zanella
has a patch that is ignored.
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>From glibc-bugs-return-47327-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 13 18:27:50 2020
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From: "ben at tawesoft dot co.uk" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/23489] "gcc -lmcheck" aborts on free when using posix_memalign
Date: Thu, 13 Feb 2020 18:27:00 -0000
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--- Comment #25 from ben at tawesoft dot co.uk ---
Just to note that I'm still getting this today on an up to date Debian system.
$ uname -a
Linux myhostname 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5 (2019-06-19) x86_64
GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 10 (buster)
Release: 10
Codename: buster
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 8.3.0-6'
--with-bugurl=file:///usr/share/doc/gcc-8/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-8
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 8.3.0 (Debian 8.3.0-6)
$ ldd --version
ldd (Debian GLIBC 2.28-10) 2.28
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Thu, 13 Feb 2020 19:54:00 -0000
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--- Comment #7 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Backports depend on someone proposing a cherry-pick on libc-stable (having
tested it).
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Thu, 13 Feb 2020 20:04:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.31/master branch has been updated by Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=aa638b86b222fcc9f9cdf1d2cb49a36ea681b469
commit aa638b86b222fcc9f9cdf1d2cb49a36ea681b469
Author: WANG Xuerui <git@xen0n.name>
Date: Thu Feb 13 00:57:03 2020 +0800
mips: Fix argument passing for inlined syscalls on Linux [BZ #25523]
According to [gcc documentation][1], temporary variables must be used for
the desired content to not be call-clobbered.
Fix the Linux inline syscall templates by adding temporary variables,
much like what x86 did before
(commit 381a0c26d73e0f074c962e0ab53b99a6c327066d).
Tested with gcc 9.2.0, both cross-compiled and natively on Loongson
3A4000.
[1]: https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html
(cherry picked from commit 4fbba6fe904d0094ddc4284066b3860d119cbd4a)
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Subject: [Bug dynamic-link/15971] No interface for debugger access to libraries loaded with dlmopen
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Eric Blake <eblake at redhat dot com> changed:
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CC| |eblake at redhat dot com
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>From glibc-bugs-return-47331-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 14 01:40:44 2020
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Subject: [Bug dynamic-link/15971] No interface for debugger access to libraries loaded with dlmopen
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--- Comment #3 from Eric Blake <eblake at redhat dot com> ---
I ran into this today while working on nbdkit; I needed a way to work around
VDDK's buggy proprietary library that calls dlopen("libcrypto.so") on a
relative path name but where the library comes with its own version of
libcrypto.so that is incompatible with the one in /usr/lib, but I also need a
solution that would not require LD_LIBRARY_PATH. My solution was to use
dlmopen() to open a shim library defining an alternative dlopen(), so that I
could intercept VDDK's poor dlopen calls and replace them with saner absolute
loads. But as a result, I'm now unable to debug any of my glue code, or to
look at the assembly in the VDDK code (the fact that the VDDK code is
proprietary already means that usefully debugging it was unlikely, but if it is
loaded by dlmopen it is impossible). If you need more people using dlmopen()
as a reason to finally get around to this bug, then count me as such a person.
https://www.redhat.com/archives/libguestfs/2020-February/msg00154.html
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>From glibc-bugs-return-47332-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 14 09:09:57 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/15971] No interface for debugger access to libraries loaded with dlmopen
Date: Fri, 14 Feb 2020 09:09:00 -0000
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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> ---
(In reply to Eric Blake from comment #3)
> I ran into this today while working on nbdkit; I needed a way to work around
> VDDK's buggy proprietary library that calls dlopen("libcrypto.so") on a
> relative path name but where the library comes with its own version of
> libcrypto.so that is incompatible with the one in /usr/lib, but I also need
> a solution that would not require LD_LIBRARY_PATH.
Why is LD_LIBRARY_PATH not an option?
If the inheritance by subprocesses is a problem, you could try an explicit
loader invocation with --library-path, or scrub the process environment after
the process has been loaded. (After program start, changing the environment
variable does not alter the search path.)
> My solution was to use
> dlmopen() to open a shim library defining an alternative dlopen(), so that I
> could intercept VDDK's poor dlopen calls and replace them with saner
> absolute loads.
It looks like you are reimplementing the la_objsearch hook from LD_AUDIT.
dlmopen seems the wrong solution for this because many things break with the
current implementation, not just debugging.
This is more of a topic for libc-help. Posting to random bug reports isn't
really the way to request help from your fellow Red Hatters.
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>From glibc-bugs-return-47334-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 14 11:32:47 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug network/21475] resolv: Overlong search path is truncated mid-label
Date: Fri, 14 Feb 2020 11:32:00 -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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a1a20f029299dc27170912bb9233070c8403444d
commit a1a20f029299dc27170912bb9233070c8403444d
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jan 21 17:11:01 2020 +0100
resolv: Fix file handle leak in __resolv_conf_load [BZ #25429]
res_vinit_1 did not close the stream on errors, only on success.
This change moves closing the stream to __resolv_conf_load, for both
the success and error cases.
Fixes commit 89f187a40fc0ad4e22838526bfe34d73f758b776 ("resolv: Use
getline for configuration file reading in res_vinit_1") and commit
3f853f22c87f0b671c0366eb290919719fa56c0e ("resolv: Lift domain search
list limits [BZ #19569] [BZ #21475]"), where memory allocation was
introduced into res_vinit_1.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Subject: [Bug network/19569] resolv: Support an arbitrary number of search domains
Date: Fri, 14 Feb 2020 11:32:00 -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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a1a20f029299dc27170912bb9233070c8403444d
commit a1a20f029299dc27170912bb9233070c8403444d
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jan 21 17:11:01 2020 +0100
resolv: Fix file handle leak in __resolv_conf_load [BZ #25429]
res_vinit_1 did not close the stream on errors, only on success.
This change moves closing the stream to __resolv_conf_load, for both
the success and error cases.
Fixes commit 89f187a40fc0ad4e22838526bfe34d73f758b776 ("resolv: Use
getline for configuration file reading in res_vinit_1") and commit
3f853f22c87f0b671c0366eb290919719fa56c0e ("resolv: Lift domain search
list limits [BZ #19569] [BZ #21475]"), where memory allocation was
introduced into res_vinit_1.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Subject: [Bug network/984] Respond to changed resolv.conf in gethostbyname
Date: Fri, 14 Feb 2020 11:32:00 -0000
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--- Comment #22 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=fa00db0a6eb755837ae5d413515e0da582b304f3
commit fa00db0a6eb755837ae5d413515e0da582b304f3
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jan 21 17:38:15 2020 +0100
resolv: Fix ABA race in /etc/resolv.conf change detection [BZ #25420]
__resolv_conf_get_current should only record the initial file
change data if after verifying that file just read matches the
original measurement. Fixes commit aef16cc8a4c670036d45590877
("resolv: Automatically reload a changed /etc/resolv.conf file
[BZ #984]").
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Subject: [Bug network/25429] res_vinit_1 leaks fp stdio stream on error
Date: Fri, 14 Feb 2020 11:32:00 -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=a1a20f029299dc27170912bb9233070c8403444d
commit a1a20f029299dc27170912bb9233070c8403444d
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jan 21 17:11:01 2020 +0100
resolv: Fix file handle leak in __resolv_conf_load [BZ #25429]
res_vinit_1 did not close the stream on errors, only on success.
This change moves closing the stream to __resolv_conf_load, for both
the success and error cases.
Fixes commit 89f187a40fc0ad4e22838526bfe34d73f758b776 ("resolv: Use
getline for configuration file reading in res_vinit_1") and commit
3f853f22c87f0b671c0366eb290919719fa56c0e ("resolv: Lift domain search
list limits [BZ #19569] [BZ #21475]"), where memory allocation was
introduced into res_vinit_1.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Subject: [Bug network/25420] Race condition in resolv_conf.c can result in caching stale configuration forever
Date: Fri, 14 Feb 2020 11:32:00 -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=fa00db0a6eb755837ae5d413515e0da582b304f3
commit fa00db0a6eb755837ae5d413515e0da582b304f3
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Jan 21 17:38:15 2020 +0100
resolv: Fix ABA race in /etc/resolv.conf change detection [BZ #25420]
__resolv_conf_get_current should only record the initial file
change data if after verifying that file just read matches the
original measurement. Fixes commit aef16cc8a4c670036d45590877
("resolv: Automatically reload a changed /etc/resolv.conf file
[BZ #984]").
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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Subject: [Bug network/25420] Race condition in resolv_conf.c can result in caching stale configuration forever
Date: Fri, 14 Feb 2020 11:52:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.32.
I tried the reproducer, but it is a bit of a fork bomb, so it did not work for
me. We can add a proper test case later, maybe once we have a port directive
for /etc/resolv.conf.
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Subject: [Bug network/25420] Race condition in resolv_conf.c can result in caching stale configuration forever
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |2.32
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Subject: [Bug manual/25555] Not closing read-end of pipe avoid kernel sending SIGPIPE to previous process in pipeline
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Antoine Barthelemy <abarthel at student dot 42.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Not closing read-en of pipe |Not closing read-end of
|avoid kernel sending |pipe avoid kernel sending
|SIGPIPE to previous process |SIGPIPE to previous process
|in pipeline |in pipeline
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Subject: [Bug manual/25555] New: Not closing read-en of pipe avoid kernel sending SIGPIPE to previous process in pipeline
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https://sourceware.org/bugzilla/show_bug.cgi?id=25555
Bug ID: 25555
Summary: Not closing read-en of pipe avoid kernel sending
SIGPIPE to previous process in pipeline
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: manual
Assignee: unassigned at sourceware dot org
Reporter: abarthel at student dot 42.fr
CC: mtk.manpages at gmail dot com
Target Milestone: ---
Overview: In section 28.5.3 Launching Jobs of Libc Manual, nor launch_job nor
launch_process function close read-end of pipe process which leads the kernel
not to send SIGPIPE to the previous process in the pipeline.
Steps to Reproduce: Executing launch_job and launch_process together in a
program that runs a pipeline such as "ls -lR / | hostname".
Actual Results: When doing so, "ls -lR /" does not receive SIGPIPE from the
kernel when "hostname" ends but instead it is suspended. In this situation we
need to kill manually "ls -lR /" which is suspended.
Expected Results: When running "ls -lR / | hostname", as soon as hostname ends,
"ls -lR /" should receive SIGPIPE and exit.
Additional Information: I suggest to add a single line to launch_job to ensure
read-end of pipe will actually be closed, avoiding leaving a pipe in a single
process ("ls" in the example).
void
launch_job (job *j, int foreground)
{
process *p;
pid_t pid;
int mypipe[2], infile, outfile;
infile = j->stdin;
for (p = j->first_process; p; p = p->next)
{
/* Set up pipes, if necessary. */
if (p->next)
{
if (pipe (mypipe) < 0)
{
perror ("pipe");
exit (1);
}
outfile = mypipe[1];
}
else
outfile = j->stdout;
/* Fork the child processes. */
pid = fork ();
if (pid == 0)
{
/* This is the child process. */
if (infile != mypipe[0]) /* Close read-end of pipe */
close(mypipe[0]);
launch_process (p, j->pgid, infile,
outfile, j->stderr, foreground);
}
else if (pid < 0)
{
/* The fork failed. */
perror ("fork");
exit (1);
}
else
{
/* This is the parent process. */
p->pid = pid;
if (shell_is_interactive)
{
if (!j->pgid)
j->pgid = pid;
setpgid (pid, j->pgid);
}
}
/* Clean up after pipes. */
if (infile != j->stdin)
close (infile);
if (outfile != j->stdout)
close (outfile);
infile = mypipe[0];
}
format_job_info (j, "launched");
if (!shell_is_interactive)
wait_for_job (j);
else if (foreground)
put_job_in_foreground (j, 0);
else
put_job_in_background (j, 0);
}
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Subject: [Bug network/25420] Race condition in resolv_conf.c can result in caching stale configuration forever
Date: Fri, 14 Feb 2020 12:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25420
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
.
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From: "eblake at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/15971] No interface for debugger access to libraries loaded with dlmopen
Date: Fri, 14 Feb 2020 13:47:00 -0000
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--- Comment #5 from Eric Blake <eblake at redhat dot com> ---
(In reply to Florian Weimer from comment #4)
Replying out of order:
> This is more of a topic for libc-help. Posting to random bug reports isn't
> really the way to request help from your fellow Red Hatters.
This wasn't a random request for help, so much as confirmation that this
(long-standing) bug is still out there, and that I encountered it because I
came up with a use case where dlmopen() solved a problem for me. I got my code
to accomplish my goal before finding this bug report, and was merely confirming
that the bug (of gdb not being able to debug dlmopen()d code) is still present,
even if I managed to get my nbdkit patch working in spite of the debugging
deficiency. If anything, I'm hoping that my post here serves as documentation
for why fixing this bug may have benefits to other users who try dlmopen(),
rather than me needing help.
> (In reply to Eric Blake from comment #3)
> > I ran into this today while working on nbdkit; I needed a way to work around
> > VDDK's buggy proprietary library that calls dlopen("libcrypto.so") on a
> > relative path name but where the library comes with its own version of
> > libcrypto.so that is incompatible with the one in /usr/lib, but I also need
> > a solution that would not require LD_LIBRARY_PATH.
>
> Why is LD_LIBRARY_PATH not an option?
VDDK's library is proprietary, and installing it puts both libvixDiskLib.so and
a sub-par libstdc++.so (among others) in the same directory. If the user
exports LD_LIBRARY_PATH to point to vddk's library, they break execution of any
binary that depends on a newer libstdc++.so.
https://bugzilla.redhat.com/show_bug.cgi?id=1756307#c7
At the same time, libvixDiskLib.so exports an initialization function which in
turn calls dlopen("libcrypto.so") and similar to load the versions of libraries
that it shipped with; because VDDK appears to be built without proper rpath,
this load fails if it finds /usr/lib64/libcrypto.so instead of the version it
shipped alongside libvixDiskLib.so. But because VDDK is proprietary, we can't
rewrite their library to fix their bug. So the only way to use VDDK is to
influence the search path so that the relative loads performed by VDDK resolve
to VDDK's installation path, but it is desirable to limit this influence to
just the process loading VDDK.
Telling users they have to set LD_LIBRARY_PATH before running nbdkit (where
nbdkit the loads libvixDiskLib.so via dlopen) is annoying: although nbdkit
itself is (so far) not broken by any of the other libraries installed by VDDK
(because it is a C program, not a C++ program), any child process that nbdkit
spawns has to undo the LD_LIBRARY_PATH damage. Worse, nbdkit is DESIGNED to
spawn a child process, and the main executable that spawns a child process
(nbdkit --run 'command ...') is in a separate binary than the shared library
that dlopen()s libvixDiskLib.so (nbdkit-vddk-plugin.so); coordinating
environment variables between the two binaries introduces awkward coupling
problems.
Since LD_LIBRARY_PATH is unpalatable, I then explored how I could hook into the
dlopen process. My solution was to dlmopen() a library that hooks dlopen(),
although your suggestion of using la_objsearch() is worth exploring - the fact
that the dlopen man page did not mention la_objsearch, and that the dlmopen man
page did not mention that dlmopen() currently does not support gdb debugging,
could be considered documentation bugs under the umbrella of this bug.
>
> If the inheritance by subprocesses is a problem, you could try an explicit
> loader invocation with --library-path, or scrub the process environment
> after the process has been loaded. (After program start, changing the
> environment variable does not alter the search path.)
Re-execing nbdkit would involve adding coupling between the main binary and the
dependent library that dlopen's vddk. An explicit loader invocation implies a
re-exec of nbdkit.
>
> > My solution was to use
> > dlmopen() to open a shim library defining an alternative dlopen(), so that I
> > could intercept VDDK's poor dlopen calls and replace them with saner
> > absolute loads.
>
> It looks like you are reimplementing the la_objsearch hook from LD_AUDIT.
The man page for dlopen did not mention la_objsearch. And, on at least Fedora
31, 'man la_objsearch' fails. (I did find online references to it, though, now
that you've pointed it out). Is it something that HAS to go through the
environment variable LD_AUDIT, or can a standalone shared library be its own
auditing interface for just a single process? If it is really that easy to
hook dlopen() to rewrite relative paths into absolute, it seems like it would
be easier to locate documentation on the matter.
>
> dlmopen seems the wrong solution for this because many things break with the
> current implementation, not just debugging.
Then those pitfalls should be documented in the dlmopen man page, as well as a
pointer back to this bug (and any others that are the result of difficulties in
process management caused by dlmopen).
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To: glibc-bugs@sourceware.org
Subject: [Bug math/14469] Inaccurate j0f function
Date: Fri, 14 Feb 2020 14:17:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Joseph Myers <jsm28@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ad180676b83dc1782d407dbff57dabbaab0c1f71
commit ad180676b83dc1782d407dbff57dabbaab0c1f71
Author: Joseph Myers <joseph@codesourcery.com>
Date: Fri Feb 14 14:16:25 2020 +0000
Adjust thresholds in Bessel function implementations (bug 14469).
A recent discussion in bug 14469 notes that a threshold in float
Bessel function implementations, used to determine when to use a
simpler implementation approach, results in substantially inaccurate
results.
As I discussed in
<https://sourceware.org/ml/libc-alpha/2013-03/msg00345.html>, a
heuristic argument suggests 2^(S+P) as the right order of magnitude
for a suitable threshold, where S is the number of significand bits in
the floating-point type and P is the number of significant bits in the
representation of the floating-point type, and the float and ldbl-96
implementations use thresholds that are too small. Some threshold
does need using, there or elsewhere in the implementation, to avoid
spurious underflow and overflow for large arguments.
This patch sets the thresholds in the affected implementations to more
heuristically justifiable values. Results will still be inaccurate
close to zeroes of the functions (thus this patch does *not* fix any
of the bugs for Bessel function inaccuracy); fixing that would require
a different implementation approach, likely along the lines described
in <http://www.cl.cam.ac.uk/~jrh13/papers/bessel.ps.gz>.
So the justification for a change such as this would be statistical
rather than based on particular tests that had excessive errors and no
longer do so (no doubt such tests could be found, but would probably
be too fragile to add to the testsuite, as liable to give large errors
again from very small implementation changes or even from compiler
changes). See
<https://sourceware.org/ml/libc-alpha/2020-02/msg00638.html> for such
statistics of the resulting improvements for float functions.
Tested (glibc testsuite) for x86_64.
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Subject: [Bug libc/23202] tst-pkeys fails on POWER
Date: Fri, 14 Feb 2020 19:57:00 -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=a803367bab167f5ec4fde1f0d0ec447707c29520
commit a803367bab167f5ec4fde1f0d0ec447707c29520
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Feb 14 20:55:39 2020 +0100
powerpc64: Add memory protection key support [BZ #23202]
The 32-bit protection key behavior is somewhat unclear on 32-bit powerpc,
so this change is restricted to the 64-bit variants.
Flag translation is needed because of hardware differences between the
POWER implementation (read and write flags) and the Intel implementation
(write and read+write flags).
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Subject: [Bug libc/23202] tst-pkeys fails on POWER
Date: Fri, 14 Feb 2020 19:59:00 -0000
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--- Comment #6 from Florian Weimer <fweimer at redhat dot com> ---
misc/tst-pkeys still needs to be updated with different test expectations.
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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 Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c261718b3fda4b629ee120f48e3ee50db9c793a1
commit c261718b3fda4b629ee120f48e3ee50db9c793a1
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 12:57:28 2020 -0300
sparc: Avoid clobbering register parameters in syscall
The sparc INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked on sparc64-linux-gnu and sparcv9-linux-gnu.
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sat, 15 Feb 2020 00:18:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6cc8fc7c1506e8084d65b078ff5b05a92e17a28a
commit 6cc8fc7c1506e8084d65b078ff5b05a92e17a28a
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 10:19:29 2020 -0300
microblaze: Avoid clobbering register parameters in syscall
The microblaze INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked with microblaze-linux-gnu and microblazeel-linux-gnu build.
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sat, 15 Feb 2020 00:19:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=be74b42ee2a97009a6cd4fc90126add4a41c583b
commit be74b42ee2a97009a6cd4fc90126add4a41c583b
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 10:32:14 2020 -0300
riscv: Avoid clobbering register parameters in syscall
The riscv INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked with riscv64-linux-gnu-rv64imafdc-lp64d build.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/24741] ld.so should not require that a versioned symbol is always implemented in the same library
Date: Sat, 15 Feb 2020 10:05:00 -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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3a0ecccb599a6b1ad4b149dc569c0080e92d057b
commit 3a0ecccb599a6b1ad4b149dc569c0080e92d057b
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Feb 8 19:58:43 2020 +0100
ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]
Exporting functions and relying on symbol interposition from libc.so
makes the choice of implementation dependent on DT_NEEDED order, which
is not what some compiler drivers expect.
This commit replaces one magic mechanism (symbol interposition) with
another one (preprocessor-/compiler-based redirection). This makes
the hand-over from the minimal malloc to the full malloc more
explicit.
Removing the ABI symbols is backwards-compatible because libc.so is
always in scope, and the dynamic loader will find the malloc-related
symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c
("ld.so: Support moving versioned symbols between sonames
[BZ #24741]").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Sat, 15 Feb 2020 10:05:00 -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 Florian Weimer <fw@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3a0ecccb599a6b1ad4b149dc569c0080e92d057b
commit 3a0ecccb599a6b1ad4b149dc569c0080e92d057b
Author: Florian Weimer <fweimer@redhat.com>
Date: Sat Feb 8 19:58:43 2020 +0100
ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]
Exporting functions and relying on symbol interposition from libc.so
makes the choice of implementation dependent on DT_NEEDED order, which
is not what some compiler drivers expect.
This commit replaces one magic mechanism (symbol interposition) with
another one (preprocessor-/compiler-based redirection). This makes
the hand-over from the minimal malloc to the full malloc more
explicit.
Removing the ABI symbols is backwards-compatible because libc.so is
always in scope, and the dynamic loader will find the malloc-related
symbols there since commit f0b2132b35248c1f4a80f62a2c38cddcc802aa8c
("ld.so: Support moving versioned symbols between sonames
[BZ #24741]").
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sun, 16 Feb 2020 13:00:00 -0000
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--- Comment #12 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.31/master branch has been updated by Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f4f884351533601863351dd8a0d79e59471372da
commit f4f884351533601863351dd8a0d79e59471372da
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 10:19:29 2020 -0300
microblaze: Avoid clobbering register parameters in syscall
The microblaze INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked with microblaze-linux-gnu and microblazeel-linux-gnu build.
(cherry picked from commit 6cc8fc7c1506e8084d65b078ff5b05a92e17a28a)
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sun, 16 Feb 2020 13:02:00 -0000
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--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.31/master branch has been updated by Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=5d31b083e41ce2492f3c1d4061dc610cdcdcfaa9
commit 5d31b083e41ce2492f3c1d4061dc610cdcdcfaa9
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 10:32:14 2020 -0300
riscv: Avoid clobbering register parameters in syscall
The riscv INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked with riscv64-linux-gnu-rv64imafdc-lp64d build.
(cherry picked from commit be74b42ee2a97009a6cd4fc90126add4a41c583b)
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sun, 16 Feb 2020 14:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25523
--- Comment #14 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 Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b3be12767c66773bc476735bf048d026a7a94925
commit b3be12767c66773bc476735bf048d026a7a94925
Author: WANG Xuerui <git@xen0n.name>
Date: Thu Feb 13 00:57:03 2020 +0800
mips: Fix argument passing for inlined syscalls on Linux [BZ #25523]
According to [gcc documentation][1], temporary variables must be used for
the desired content to not be call-clobbered.
Fix the Linux inline syscall templates by adding temporary variables,
much like what x86 did before
(commit 381a0c26d73e0f074c962e0ab53b99a6c327066d).
Tested with gcc 9.2.0, both cross-compiled and natively on Loongson
3A4000.
[1]: https://gcc.gnu.org/onlinedocs/gcc/Local-Register-Variables.html
(cherry picked from commit 4fbba6fe904d0094ddc4284066b3860d119cbd4a)
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sun, 16 Feb 2020 14:17:00 -0000
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--- Comment #16 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 Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=74d9b0811eb4176ba314436a56f6f5fea96ba910
commit 74d9b0811eb4176ba314436a56f6f5fea96ba910
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 10:32:14 2020 -0300
riscv: Avoid clobbering register parameters in syscall
The riscv INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked with riscv64-linux-gnu-rv64imafdc-lp64d build.
(cherry picked from commit be74b42ee2a97009a6cd4fc90126add4a41c583b)
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
Date: Sun, 16 Feb 2020 14:17:00 -0000
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--- Comment #15 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The release/2.30/master branch has been updated by Aurelien Jarno
<aurel32@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=e1766196b67b830b8dbced1d96fd9c538f00489c
commit e1766196b67b830b8dbced1d96fd9c538f00489c
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Mon Feb 10 10:19:29 2020 -0300
microblaze: Avoid clobbering register parameters in syscall
The microblaze INTERNAL_SYSCALL macro might clobber the register
parameter if the argument itself might clobber any register (a function
call for instance).
This patch fixes it by using temporary variables for the expressions
between the register assignments (as indicated by GCC documentation,
6.47.5.2 Specifying Registers for Local Variables).
It is similar to the fix done for MIPS (bug 25523).
Checked with microblaze-linux-gnu and microblazeel-linux-gnu build.
(cherry picked from commit 6cc8fc7c1506e8084d65b078ff5b05a92e17a28a)
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Subject: [Bug hurd/25563] New: hurd: Fix robust mutex support against dead threads
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Bug ID: 25563
Summary: hurd: Fix robust mutex support against dead threads
Product: glibc
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The tst-robust* tests fail because the current htl implementation checks the
liveness of the process that had the lock, and not the liveness of the thread
that had the lock.
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Subject: [Bug libc/14106] _FILE_OFFSET_BITSd goes outside standard namespace
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Subject: [Bug dynamic-link/24943] Support DT_AUDIT, DT_DEPAUDIT in the dynamic linker
Date: Mon, 17 Feb 2020 16:04:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Rebase posted: https://www.sourceware.org/ml/libc-alpha/2020-02/msg00766.html
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From: "romain.geissler at amadeus dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/25571] New: elf/tst-ldconfig-ld_so_conf-update should use support_install_prefix as a prefix for /etc/ld.so.conf ?
Date: Tue, 18 Feb 2020 00:23:00 -0000
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Bug ID: 25571
Summary: elf/tst-ldconfig-ld_so_conf-update should use
support_install_prefix as a prefix for /etc/ld.so.conf
?
Product: glibc
Version: 2.31
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Hi,
I have a failing tests when I run glibc 2.31 test suite with a glibc configured
using a non default --prefix. This was running inside a Jenkins jobs for which
I don't have the build artefacts anymore. However, just checking the test
elf/tst-ldconfig-ld_so_conf-update shouldn't it use support_install_prefix in
front of /etc/ld.so.conf ?
I had similar issues with binutils 2.34 recently in PR25477.
Cheers,
Romain
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Subject: [Bug libc/25442] openlog() keep reference to ident that caller may have freed
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Subject: [Bug libc/25574] New: wcstombs assertion on __attribute__((__packed__)) structure
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https://sourceware.org/bugzilla/show_bug.cgi?id=25574
Bug ID: 25574
Summary: wcstombs assertion on __attribute__((__packed__))
structure
Product: glibc
Version: 2.27
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: spetrov at mallsi dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 12298
--> https://sourceware.org/bugzilla/attachment.cgi?id=12298&action=edit
wcstombs_test.c source code
Hello,
wcstombs function somehow differ in behavior when used with normal struct {}
and struct {} __attribute__((__packed__));
tested with the following scenario:
-------------------------------------8<-----------------------------
--- gcc version ---
spetrov@HPGLX-LINUX:~$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
7.4.0-1ubuntu1~18.04.1' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
--- compile ---
spetrov@HPGLX-LINUX:~$ gcc -o wcstombs_test wcstombs_test.c -Wall
-Wstrict-prototypes -Wmissing-prototypes -Werror
--- run program ---
spetrov@HPGLX-LINUX:~$ ./wcstombs_test
sizeof(struct _test) = 8, sizeof(struct _test_p) = 5
base=0x55f3cc5ba5a0 a1=0x55f3cc5ba5a8, base=0x55f3cc5ba990 a2=0x55f3cc5ba995
wcstombs_test: wcsrtombs.c:94: __wcsrtombs: Assertion `data.__outbuf[-1] ==
'\0'' failed.
Aborted (core dumped)
spetrov@HPGLX-LINUX:~$
-------------------------------------8<-----------------------------
source code of wcstombs_test.c is attached.
Kind Regards,
Svetoslav Petrov
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Subject: [Bug libc/14578] /proc-based emulation for lchmod, fchmodat
Date: Tue, 18 Feb 2020 16:54:00 -0000
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--- Comment #18 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=a492b1e5ef7ab50c6fdd4e4e9879ea5569ab0a6c
commit a492b1e5ef7ab50c6fdd4e4e9879ea5569ab0a6c
Author: Florian Weimer <fweimer@redhat.com>
Date: Tue Feb 18 17:52:27 2020 +0100
Linux: Work around kernel bugs in chmod on /proc/self/fd paths [BZ #14578]
It appears that the ability to change symbolic link modes through such
paths is unintended. On several file systems, the operation fails with
EOPNOTSUPP, even though the symbolic link permissions are updated.
The expected behavior is a failure to update the permissions, without
file system changes.
Reviewed-by: Matheus Castanho <msc@linux.ibm.com>
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Subject: [Bug libc/25574] wcstombs assertion on __attribute__((__packed__)) structure
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----------------------------------------------------------------------------
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
You are passing an unaligned pointer to wcstombs.
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Subject: [Bug libc/25512] std::call_once not working as expected when the invocated function throws an exception.
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What |Removed |Added
----------------------------------------------------------------------------
Summary|std::call_once not working |std::call_once not working
|as expected when the |as expected when the
|invocated function thwows |invocated function throws
|an exception. |an exception.
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>From glibc-bugs-return-47366-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 11:06:29 2020
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Subject: [Bug libc/25512] std::call_once not working as expected when the invocated function throws an exception.
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
I don't see anything calling the cleanup function in __pthread_once_slow.
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--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
dup
*** This bug has been marked as a duplicate of bug 18435 ***
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Subject: [Bug nptl/18435] pthread_once hangs when init routine throws an exception
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CC| |mariogalindoq at hotmail dot com
--- Comment #18 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 25512 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-47369-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 14:40:49 2020
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Subject: [Bug libc/23202] tst-pkeys fails on POWER
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tulio Magno Quites Machado Filho
<tuliom@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8d42bf859a289944749d9f978c076cd318119867
commit 8d42bf859a289944749d9f978c076cd318119867
Author: Lucas A. M. Magalhaes <lamm@linux.ibm.com>
Date: Mon Feb 17 09:09:52 2020 -0300
Fix tst-pkey expectations on pkey_get [BZ #23202]
From the GNU C Library manual, the pkey_set can receive a combination of
PKEY_DISABLE_WRITE and PKEY_DISABLE_ACCESS. However PKEY_DISABLE_ACCESS
is more restrictive than PKEY_DISABLE_WRITE and includes its behavior.
The test expects that after setting
(PKEY_DISABLE_WRITE|PKEY_DISABLE_ACCESS) pkey_get should return the
same. This may not be true as PKEY_DISABLE_ACCESS will succeed in
describing the state of the key in this case.
The pkey behavior during signal handling is different between x86 and
POWER. This change make the test compatible with both architectures.
Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
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Subject: [Bug libc/25248] getconf(1) prints wrong SSIZE_MAX and doesn't recognise MIN/MAX for long and long long
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>From glibc-bugs-return-47372-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 15:19:17 2020
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Subject: [Bug libc/25214] ctype.h performance (and potentially behavior) depends on include order
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>From glibc-bugs-return-47373-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 15:19:43 2020
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>From glibc-bugs-return-47374-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 15:25:04 2020
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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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>From glibc-bugs-return-47375-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 15:26:00 2020
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Subject: [Bug regex/25149] Array bounds violation in proceed_next_node
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
This requires a crafted regular expression to trigger the out-of-bounds access,
so I'm setting security-.
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>From glibc-bugs-return-47376-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 15:26:44 2020
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Subject: [Bug libc/24970] realpath mishandles EOVERFLOW; stat not needed anyway
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Florian Weimer <fweimer at redhat dot com> changed:
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--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
Patches should be posted to libc-alpha. Thanks.
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>From glibc-bugs-return-47377-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 15:27:05 2020
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Subject: [Bug libc/24963] fclose should lock stream first to synchronize with funlockfile
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>From glibc-bugs-return-47378-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Feb 19 16:59:19 2020
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug librt/10815] [timer_create / SIGEV_THREAD] signalmask of timer_sigev_thread dangerous
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
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Assignee|drepper.fsp at gmail dot com |adhemerval.zanella at linaro dot o
| |rg
Target Milestone|--- |2.32
--- Comment #6 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.32.
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>From glibc-bugs-return-47379-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 05:10:14 2020
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From: "memoreku at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/25582] New: sysmalloc fails to allocate memory
Date: Thu, 20 Feb 2020 05:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25582
Bug ID: 25582
Summary: sysmalloc fails to allocate memory
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: malloc
Assignee: unassigned at sourceware dot org
Reporter: memoreku at gmail dot com
Target Milestone: ---
Created attachment 12304
--> https://sourceware.org/bugzilla/attachment.cgi?id=12304&action=edit
source code
I'm using 64bit gentoo 17.1 with sys-libs/glibc-2.30-r4. Attached code crashes
when 5 is passed through argv:
% g++ -O0 -g3 -std=c++17 dcp_321.cpp && ./a.out 5
a.out: malloc.c:2379: sysmalloc: Assertion `(old_top == initial_top (av) &&
old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse
(old_top) && ((unsigned long) o
ld_end & (pagesize - 1)) == 0)' failed.
[1] 22677 abort ./a.out 5
% gcc --version
gcc (Gentoo 9.2.0-r2 p3) 9.2.0
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>From glibc-bugs-return-47380-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 09:50:30 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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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 Andreas Schwab <schwab@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=ddc650e9b3dc916eab417ce9f79e67337b05035c
commit ddc650e9b3dc916eab417ce9f79e67337b05035c
Author: Andreas Schwab <schwab@suse.de>
Date: Wed Feb 19 17:21:46 2020 +0100
Fix use-after-free in glob when expanding ~user (bug 25414)
The value of `end_name' points into the value of `dirname', thus don't
deallocate the latter before the last use of the former.
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed in 2.31.
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Subject: [Bug malloc/25582] sysmalloc fails to allocate memory
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Don't write beyond the boundaries of the vector.
dp[i] = dp[i-1] + 1;
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>From glibc-bugs-return-47383-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 10:22:24 2020
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
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--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed in 2.32.
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>From glibc-bugs-return-47384-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 15:39:43 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Thu, 20 Feb 2020 15:39:00 -0000
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Joost van der Sluis <joost at cnoc dot nl> changed:
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----------------------------------------------------------------------------
CC| |joost at cnoc dot nl
--- Comment #10 from Joost van der Sluis <joost at cnoc dot nl> ---
I still have a question, though.
Most applications compiled by fpc (the Free Pascal Compiler) do not depend on
libc on Linux targets.
But long time ago we discovered that when an application links to a library, it
also has to link to libc or ld-linux. If you don't do this, it may lead to
vague problems.
That is why fpc-applications link with ld-linux. The statement that you never
have to do this is simply not true.
What do you suggest that we do, now?
What we could do is: link with ld-linux only when libc is not used. This will
probably solve the issue. But what would be the 'correct' solution, from your
point of view?
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Subject: [Bug malloc/25582] sysmalloc fails to allocate memory
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NickP <memoreku at gmail dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from NickP <memoreku at gmail dot com> ---
(In reply to Andreas Schwab from comment #1)
> Don't write beyond the boundaries of the vector.
>
> dp[i] = dp[i-1] + 1;
the loop starts with 2, so it will never write beyond the boundaries
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Thu, 20 Feb 2020 16:09:00 -0000
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--- Comment #11 from Lorinczy Zsigmond <lzsiga at freemail dot c3.hu> ---
Hi, I looked at fpc-SVN where these lines have been added; I think it means the
shared object created by fpc has to depend on _some_ other shared object
(doesn't matter what shared object), to prevent some problem during
finalization. So it doesn't actually imports anything from ld-linux.so, it just
needs a dependendent share-object.
-------------------------------------------------------------------------------
r19036 | tom_at_work | 2011-09-08 23:17:35 +0200 (Thu, 08 Sep 2011) | 27 lines
Fix shared library loading and unloading for Linux platforms.
Shared library initialization and finalization are now called correctly
at program startup for compile-time linked dynamic libraries on
powerpc-/powerpc64-/arm-/i386- and x86_64-linux.
Every startup code must now provide an additional entry point called
"_dynamic_start"
that is set as new the entry point if the program links to a Pascal shared
library.
Its purpose is to set up an exit hook usually passed via a register,
which should be called during program finalization if non-nil.
We use this additional entry point because this register only has meaningful
content
when there are any compile-time linked shared libraries, otherwise it often
contains random garbage.
The difference between the _dynamic_start and the original code is minimal;
actually in all implementations the _dynamic_start code passes on control to
the old startup code,
so we use an additional entry point instead of an additional startup file.
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>From glibc-bugs-return-47387-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 16:40:49 2020
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug malloc/25582] sysmalloc fails to allocate memory
Date: Thu, 20 Feb 2020 16:40:00 -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 #3 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
(In reply to NickP from comment #2)
> (In reply to Andreas Schwab from comment #1)
> > Don't write beyond the boundaries of the vector.
> >
> > dp[i] = dp[i-1] + 1;
>
> the loop starts with 2, so it will never write beyond the boundaries
$ g++ -fsanitize=address test.cc -o test
$ ./test
=================================================================
==18489==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x6140000001d4 at pc 0x559962ced391 bp 0x7fff0b8cca40 sp 0x7fff0b8cca30
WRITE of size 4 at 0x6140000001d4 thread T0
#0 0x559962ced390 in find_solution(std::vector<int, std::allocator<int> >&)
(/tmp/test+0x1390)
#1 0x559962ced83e in main (/tmp/test+0x183e)
#2 0x7f3e8b66db96 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#3 0x559962ced139 in _start (/tmp/test+0x1139)
0x6140000001d4 is located 0 bytes to the right of 404-byte region
[0x614000000040,0x6140000001d4)
allocated by thread T0 here:
#0 0x7f3e8c45c458 in operator new(unsigned long)
(/usr/lib/x86_64-linux-gnu/libasan.so.4+0xe0458)
#1 0x559962cee288 in __gnu_cxx::new_allocator<int>::allocate(unsigned long,
void const*) (/tmp/test+0x2288)
#2 0x559962cee1f0 in std::allocator_traits<std::allocator<int>
>::allocate(std::allocator<int>&, unsigned long) (/tmp/test+0x21f0)
#3 0x559962cee141 in std::_Vector_base<int, std::allocator<int>
>::_M_allocate(unsigned long) (/tmp/test+0x2141)
#4 0x559962cedfc2 in std::_Vector_base<int, std::allocator<int>
>::_M_create_storage(unsigned long) (/tmp/test+0x1fc2)
#5 0x559962cedd6a in std::_Vector_base<int, std::allocator<int>
>::_Vector_base(unsigned long, std::allocator<int> const&) (/tmp/test+0x1d6a)
#6 0x559962cedc31 in std::vector<int, std::allocator<int>
>::vector(unsigned long, int const&, std::allocator<int> const&)
(/tmp/test+0x1c31)
#7 0x559962ced75c in main (/tmp/test+0x175c)
#8 0x7f3e8b66db96 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
SUMMARY: AddressSanitizer: heap-buffer-overflow (/tmp/test+0x1390) in
find_solution(std::vector<int, std::allocator<int> >&)
Shadow bytes around the buggy address:
0x0c287fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff8000: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
0x0c287fff8010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c287fff8020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c287fff8030: 00 00 00 00 00 00 00 00 00 00[04]fa fa fa fa fa
0x0c287fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==18489==ABORTING
$ g++ test.cc -o test
$ valgrind ./test
==18648== Memcheck, a memory error detector
==18648== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==18648== Using Valgrind-3.15.0 and LibVEX; rerun with -h for copyright info
==18648== Command: ./test
==18648==
==18648== Invalid write of size 4
==18648== at 0x108BBD: find_solution(std::vector<int, std::allocator<int>
>&) (in /tmp/test)
==18648== by 0x108D47: main (in /tmp/test)
==18648== Address 0x576be14 is 0 bytes after a block of size 404 alloc'd
==18648== at 0x40304AA: operator new(unsigned long)
(vg_replace_malloc.c:344)
==18648== by 0x1093D9: __gnu_cxx::new_allocator<int>::allocate(unsigned
long, void const*) (in /tmp/test)
==18648== by 0x109346: std::allocator_traits<std::allocator<int>
>::allocate(std::allocator<int>&, unsigned long) (in /tmp/test)
==18648== by 0x109297: std::_Vector_base<int, std::allocator<int>
>::_M_allocate(unsigned long) (in /tmp/test)
==18648== by 0x109184: std::_Vector_base<int, std::allocator<int>
>::_M_create_storage(unsigned long) (in /tmp/test)
==18648== by 0x109024: std::_Vector_base<int, std::allocator<int>
>::_Vector_base(unsigned long, std::allocator<int> const&) (in /tmp/test)
==18648== by 0x108F37: std::vector<int, std::allocator<int>
>::vector(unsigned long, int const&, std::allocator<int> const&) (in /tmp/test)
==18648== by 0x108D01: main (in /tmp/test)
==18648==
8
==18648==
==18648== HEAP SUMMARY:
==18648== in use at exit: 0 bytes in 0 blocks
==18648== total heap usage: 3 allocs, 3 frees, 74,132 bytes allocated
==18648==
==18648== All heap blocks were freed -- no leaks are possible
==18648==
==18648== For lists of detected and suppressed errors, rerun with: -s
==18648== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
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>From glibc-bugs-return-47388-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 16:52:07 2020
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From: "memoreku at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug malloc/25582] sysmalloc fails to allocate memory
Date: Thu, 20 Feb 2020 16:52:00 -0000
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NickP <memoreku at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #4 from NickP <memoreku at gmail dot com> ---
Sorry. I was wrong about this. Indeed it writes out of boundary.
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>From glibc-bugs-return-47389-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 20 20:58:09 2020
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From: "tuliom at ascii dot art.br" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/23202] tst-pkeys fails on POWER
Date: Thu, 20 Feb 2020 20:58:00 -0000
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Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lamm at linux dot ibm.com
--- Comment #8 from Tulio Magno Quites Machado Filho <tuliom at ascii dot art.br> ---
There is still a scenario where tst-pkeys fail on POWER: when Linux <= 4.18.
More information here:
https://www.sourceware.org/ml/libc-alpha/2020-02/msg00819.html
The support for pkeys on POWER was enabled on Linux 4.16. However, it had
issues that have been fixed on Linux 4.19.
Calls to pkey_alloc() succeed in that scenario, making it hard to detect the
support for pkeys.
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>From glibc-bugs-return-47390-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 21 00:53:35 2020
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
Date: Fri, 21 Feb 2020 00:53:00 -0000
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Dr. Frisco Rose <friscorose at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |friscorose at gmail dot com
--- Comment #5 from Dr. Frisco Rose <friscorose at gmail dot com> ---
Seeing this bug on Debian with
GNU C Library (Debian GLIBC 2.24-11+deb9u4) stable release version 2.24
Occurs when exiting main that calls to fgetwc( stdin ) and does not consume all
of the input. A gdb back trace
(gdb) bt
#0 __GI__IO_wfile_sync (fp=0x7f4c5cd236fe <do_length+126>) at wfileops.c:534
#1 0x00007f4c5cd29de2 in _IO_default_setbuf (fp=fp@entry=0x7f4c5d04e8c0
<_IO_2_1_stdin_>, p=0x0, len=0) at genops.c:523
#2 0x00007f4c5cd26a79 in _IO_new_file_setbuf (fp=0x7f4c5d04e8c0
<_IO_2_1_stdin_>, p=<optimized out>, len=<optimized out>) at fileops.c:459
#3 0x00007f4c5cd2a736 in _IO_unbuffer_all () at genops.c:921
#4 _IO_cleanup () at genops.c:966
#5 0x00007f4c5ccea8e3 in __run_exit_handlers (status=0, listp=<optimized out>,
run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at
exit.c:96
#6 0x00007f4c5ccea99a in __GI_exit (status=<optimized out>) at exit.c:105
#7 0x00007f4c5ccd52e8 in __libc_start_main (main=0x561cb839b4f8 <main>,
argc=1, argv=0x7fff700f7908, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff700f78f8) at ../csu/libc-start.c:325
#8 0x0000561cb839a74a in _start ()
If I can help, just let me know how. I would very much like to build a UTF8
aware application but this seems to be a show stopper.
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>From glibc-bugs-return-47391-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 21 01:31:27 2020
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Subject: [Bug stdio/20938] In variable-width charsets, _IO_wfile_sync passes a negative buffer size to __codecvt_do_length on certain inputs to fgetws resulting in SIGSEGV
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--- Comment #6 from Dr. Frisco Rose <friscorose at gmail dot com> ---
Addendum: fclose(stdin) is a work around fix for anyone else who ends up here.
REF:
www.linuxquestions.org/questions/programming-9/segfault-after-return-from-main-4175659749/
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>From glibc-bugs-return-47392-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 21 12:08:39 2020
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Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Fri, 21 Feb 2020 12:08:00 -0000
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--- Comment #12 from Florian Weimer <fweimer at redhat dot com> ---
I don't know enough about the fpc toolchain. Does it use binutils ld and the
gcc compiler driver? Or does it implement its own compiler driver and linker?
Does fpc link with the startup files?
In general, there will be compatibility issues if you do not link with the
startup files, and quote for r19036 suggests that this is what you are working
around. But I suspect that fpc over-links against ld.so for no good reason. You
will need a DT_NEEDED entry for libc.so.6 for correct ordering of initializers,
but the DT_NEEDED entry for the dynamic linker is not required for this (and
actually counterproductive for currently released glibc versions).
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To: glibc-bugs@sourceware.org
Subject: [Bug math/23294] Complex _FloatN functions are redirected to the wrong function with -mlong-double-64
Date: Fri, 21 Feb 2020 14:28:00 -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 Paul E. Murphy <murphyp@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=77ad97356caacfa5a54236791c4f1f68b689e915
commit 77ad97356caacfa5a54236791c4f1f68b689e915
Author: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Date: Mon Jun 18 21:11:26 2018 -0300
Undefine redirections after long double definition on __LDBL_COMPAT [BZ
#23294]
After defining the long double redirections to double, __MATHDECL_1 has
to be redefined to its previous state in order to avoid redirecting all
subsequent types.
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Subject: [Bug math/23294] Complex _FloatN functions are redirected to the wrong function with -mlong-double-64
Date: Fri, 21 Feb 2020 14:51:00 -0000
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Paul E. Murphy <murphyp at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |murphyp at linux dot vnet.ibm.com
Resolution|--- |FIXED
Target Milestone|--- |2.32
--- Comment #5 from Paul E. Murphy <murphyp at linux dot vnet.ibm.com> ---
Fixed via commit noted earlier.
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Subject: [Bug nptl/22853] Heap address of pthread_create thread is aligned.
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Ismael Ripoll <iripoll at disca dot upv.es> changed:
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----------------------------------------------------------------------------
CC| |iripoll at disca dot upv.es
--- Comment #5 from Ismael Ripoll <iripoll at disca dot upv.es> ---
This patch solves the weakness discovered by Ilya Smith. The problem
is important in x86_64, but we think that is SEVERE on other systems
(4 ASLR bits is like no ASLR).
Ptmalloc aligns to a very large value the arenas. This large alignment
greatly reduces the ASLR entropy of all the dynamically allocated data
from thread code. Allocations carried out from main() are not
affected, unless brk can not expand the heap.
The impact of the alignment greatly depends on the architecture. The
expected entropy shall be at least that of the mmap() on each system,
but the actual entropy is shown in the following table:
+----------+--------+-----------------+
| System | Mmap | Thread malloc |
+----------+--------+-----------------+
| x86_64 | 28 | 14 |
| i386 | 8 | 0 |
| x32 | 8 | 0 |
| ARM | 8 | 0 |
| AARCH | 18 | 4 |
| PPC64 | 14 | 4 |
| s390(64) | 11 | 4 |
| s390 | 11 | 3 |
+----------+--------+-----------------+
As it can be seen, all systems but x86_64 are severely affected by
this weakness.
This patch removes the need to align arenas to HEAP_MAX_SIZE by
changing the macro heap_for_ptr(ptr). Arenas are randomized with the
same entropy than the rest of mmaped objects. The entropy to randomize
the thread's arenas is obtained from the ASLR value of the libraries,
by using the address of the __arena_rnd:
__arena_rnd = ((unsigned long)&__arena_rnd) & (HEAP_MAX_SIZE-1) &
~(pagesize-1);
This way, if the user disables ASLR (via randomize_va_space, setarch
-R, or when using gdb), the entropy of the arena is also automatically
disabled.
Summary of the patch features:
*- Does not change the allocation policy.
*- Does not add new data structures (only a long variable).
*- The temporal overhead is almost undetectable (just 2 more cpu
instructions per free: one "add" and one "or"). malloc is not
affected.
*- It is fully backward compatible.
*- It restores completely, the ASLR entropy to thread's heaps.
With the patch the entropy on x86_64 is 28bits (15 more than the
current one), and i386 is 8bits (8 more), which is the same
entropy that the mallocs made from the main thread.
Checked on x86_64-linux-gnu and i386-linux-gnu
Authors:
Ismael Ripoll-Ripoll <iripoll@disca.upv.es>
Hector Marco-Gisbert <hmarco@hmarco.org>
---
malloc/arena.c | 29 ++++++++++++++++++++++-------
1 file changed, 22 insertions(+), 7 deletions(-)
diff --git a/malloc/arena.c b/malloc/arena.c
index cecdb7f4c4..8dd7b9f028 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -48,7 +48,7 @@
/* A heap is a single contiguous memory region holding (coalesceable)
malloc_chunks. It is allocated with mmap() and always starts at an
- address aligned to HEAP_MAX_SIZE. */
+ address aligned to arena_rnd. */
typedef struct _heap_info
{
@@ -122,10 +122,15 @@ int __malloc_initialized = -1;
ptr = arena_get2 ((size), NULL); \
} while (0)
-/* find the heap and corresponding arena for a given ptr */
-
+/* find the heap and corresponding arena for a given ptr. Note that
+ heap_info is not HEAP_MAX_SIZE aligned any more. But a random
+ offset from the expected alignment, known by the process. This way
+ it is fast to get the head of the area whereas it is ASLR compatible.
+*/
+static unsigned long __arena_rnd;
#define heap_for_ptr(ptr) \
- ((heap_info *) ((unsigned long) (ptr) & ~(HEAP_MAX_SIZE - 1)))
+ ((heap_info *) ((((unsigned long) ptr-__arena_rnd) & ~(HEAP_MAX_SIZE - 1)) \
+ | __arena_rnd))
#define arena_for_chunk(ptr) \
(chunk_main_arena (ptr) ? &main_arena : heap_for_ptr (ptr)->ar_ptr)
@@ -293,6 +298,11 @@ ptmalloc_init (void)
__malloc_initialized = 0;
+ size_t pagesize = GLRO (dl_pagesize);
+ /* Get the entropy from the already existing ASLR. */
+ __arena_rnd = ((unsigned long)&__arena_rnd) & (HEAP_MAX_SIZE-1) &
+ ~(pagesize-1);
+
#ifdef SHARED
/* In case this libc copy is in a non-default namespace, never use brk.
Likewise if dlopened from statically linked program. */
@@ -439,7 +449,7 @@ dump_heap (heap_info *heap)
/* If consecutive mmap (0, HEAP_MAX_SIZE << 1, ...) calls return decreasing
addresses as opposed to increasing, new_heap would badly fragment the
address space. In that case remember the second HEAP_MAX_SIZE part
- aligned to HEAP_MAX_SIZE from last mmap (0, HEAP_MAX_SIZE << 1, ...)
+ aligned to arena_rnd from last mmap (0, HEAP_MAX_SIZE << 1, ...)
call (if it is already aligned) and try to reuse it next time. We need
no locking for it, as kernel ensures the atomicity for us - worst case
we'll call mmap (addr, HEAP_MAX_SIZE, ...) for some value of addr in
@@ -490,6 +500,11 @@ new_heap (size_t size, size_t top_pad)
{
p2 = (char *) (((unsigned long) p1 + (HEAP_MAX_SIZE - 1))
& ~(HEAP_MAX_SIZE - 1));
+ /* The heap_info is at a random offset from the alignment to
+ HEAP_MAX_SIZE. */
+ p2 = (char *) ((unsigned long) p2 | __arena_rnd);
+ if (p1 + HEAP_MAX_SIZE <= p2)
+ p2 -= HEAP_MAX_SIZE;
ul = p2 - p1;
if (ul)
__munmap (p1, ul);
@@ -500,12 +515,12 @@ new_heap (size_t size, size_t top_pad)
else
{
/* Try to take the chance that an allocation of only HEAP_MAX_SIZE
- is already aligned. */
+ is already aligned to __arena_rnd. */
p2 = (char *) MMAP (0, HEAP_MAX_SIZE, PROT_NONE, MAP_NORESERVE);
if (p2 == MAP_FAILED)
return 0;
- if ((unsigned long) p2 & (HEAP_MAX_SIZE - 1))
+ if (((unsigned long) p2 & (HEAP_MAX_SIZE - 1)) != __arena_rnd)
{
__munmap (p2, HEAP_MAX_SIZE);
return 0;
--
2.20.1
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From: "far at illumenos dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/22380] Inconsistency detected by ld.so: dl-open.c: 717: _dl_open: Assertion `_dl_debug_initialize (0, args.nsid)->r_state == RT_CONSISTENT' failed!
Date: Sun, 23 Feb 2020 13:20:00 -0000
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Felipe Rodriguez <far at illumenos dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |far at illumenos dot com
--- Comment #8 from Felipe Rodriguez <far at illumenos dot com> ---
I encountered this bug with sprof on my patched glibc-2.20 and confirmed that
the same issue exists on Ubuntu 16. I tried the earlier patch attached to this
Bug but encountered a deadlock later in my system build processes. Modifying
logic which works fine except when a shared object is loaded by sprof's magic
seems wrong so I removed the patch. The Bug only occurs with sprof's loading
so simply disabling the assertion when an object is loaded with the sprof flag
__RTLD_SPROF allows me to use sprof while avoiding changes that might disturb
the normal shared object loading mechanism.
+ if (!(__glibc_unlikely (mode & __RTLD_SPROF))) {
assert (_dl_debug_initialize (0, args.nsid)->r_state == RT_CONSISTENT);
+ }
I have attached a patch for glibc-2.20.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/22380] Inconsistency detected by ld.so: dl-open.c: 717: _dl_open: Assertion `_dl_debug_initialize (0, args.nsid)->r_state == RT_CONSISTENT' failed!
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--- Comment #9 from Felipe Rodriguez <far at illumenos dot com> ---
Created attachment 12314
--> https://sourceware.org/bugzilla/attachment.cgi?id=12314&action=edit
sprof flag test
Disable consistency check assertion when loading with sprof
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From: "wangliushuai at bytedance dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/11787] Program with large TLS segments fail.
Date: Mon, 24 Feb 2020 02:39:00 -0000
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Wang Liushuai <wangliushuai at bytedance dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wangliushuai at bytedance dot com
--- Comment #48 from Wang Liushuai <wangliushuai at bytedance dot com> ---
Hi guys,
In ByteDance, we hit this Glibc bug twice in real-world production and adopted
the fix based on the OpenJDK solution. However, these temporary fixes are not
extensible. In the end, it needs to be fixed on the Glibc side.
Cheers,
Wang Liushuai.
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From: "lzsiga at freemail dot c3.hu" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Mon, 24 Feb 2020 13:46:00 -0000
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--- Comment #13 from Lorinczy Zsigmond <lzsiga at freemail dot c3.hu> ---
Well, fpc doesn't use gcc nor glibc (unless `USES initc` is used, which adds
libso.6 as dependency); but it does use the platform-linker.
It can create executables (when the source begins with PROGRAM), and shared
objects (when the source begins with LIBRARY); the problem occurs when linking
shared objects: an unnecessary dependecy to loader-linker is added.
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>From glibc-bugs-return-47400-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:19:01 2020
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Subject: [Bug dynamic-link/25486] RFE: Stop exporting free, realloc, calloc, and malloc from ld.so
Date: Mon, 24 Feb 2020 14:19:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25486
--- Comment #14 from Florian Weimer <fweimer at redhat dot com> ---
This patch is also needed:
https://www.sourceware.org/ml/libc-alpha/2020-02/msg00722.html
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>From glibc-bugs-return-47401-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:19:35 2020
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Subject: [Bug dynamic-link/25486] RFE: Do not rely on symbol interposition from libc.so into ld.so
Date: Mon, 24 Feb 2020 14:19:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|RFE: Stop exporting free, |RFE: Do not rely on symbol
|realloc, calloc, and malloc |interposition from libc.so
|from ld.so |into ld.so
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>From glibc-bugs-return-47402-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:22:49 2020
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Subject: [Bug malloc/25594] New: [RFE] Improve malloc performance in low-memory scenarios for threaded arenas.
Date: Mon, 24 Feb 2020 14:22:00 -0000
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Bug ID: 25594
Summary: [RFE] Improve malloc performance in low-memory
scenarios for threaded arenas.
Product: glibc
Version: 2.32
Status: NEW
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Malloc performance for a threaded program may suffer significantly when mmap
beings to fail and the threads have to retry mmap on each allocation before
transitioning to a main-arena sbrk allocation as backup.
The glibc malloc algorithm has a specific policy of not moving a thread to a
different memory pool in the event of a transient failure (mmap failure). That
means that any non-main-arena-using threads will only temporarily switch to the
main arena before retrying in their own arena. The inverse is not true though,
a failing main-arena-using thread will (after sbrk and morecore fail) switch
permanently to a mmap-based arena if the main arena fails. It's far more likely
that a failure in an mmap arena is temporary and that a failure in an
sbrk/morecore-based arena is permanent (usually because you have a mapping the
has interrupted the growth of the heap). We understand that this means that
when the limit of memory is reached, that performance drops drastically as the
thread which is out of memory is unable to find memory, and all the retries
fail, and only the eventual main-arena retry is successful. This isn't the
behaviour we want overall for the allocator, it would ultimately be better if
the threads were globally rebalanced on appropriate arena to reduce both
contention and fragmentation.
Relevant allocator metrics for these cases of low-memory are internal
fragmentation and external fragmentation, both of which are difficult to
compute and require tracking exactly the committed RSS pages and internal
allocator details. Efficiency as computed from either VSZ or RSS is not
normally used to compare any algorithmic changes. Any rebalancing algorithm
work we do upstream will look at fragmentation closely across a variety of
workloads. We currently have an ongoing project to look at RSS usage, and we
can add this requirement as part of the analysis (looking at rebalancing in
low-memory) since it may also help yield lower RSS usage if the rebalancing can
happen dynamically over time.
At the end of the day we should try to do better to reduce the cost of the mmap
failure.
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Subject: [Bug malloc/25594] [RFE] Improve malloc performance in low-memory scenarios for threaded arenas.
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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=1626127
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>From glibc-bugs-return-47404-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:23:38 2020
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Created attachment 12315
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malloc_bad_mmap_pthread.c
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>From glibc-bugs-return-47405-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:24:46 2020
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Subject: [Bug malloc/25594] [RFE] Improve malloc performance in low-memory scenarios for threaded arenas.
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>From glibc-bugs-return-47406-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:51:39 2020
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Subject: [Bug libc/4737] fork is not async-signal-safe
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--- Comment #26 from Florian Weimer <fweimer at redhat dot com> ---
With this commit
commit 56290d6e762c1194547e73ff0b948cd79d3a1e03
Author: Florian Weimer <fweimer@redhat.com>
Date: Thu May 12 08:54:17 2016 +0200
Increase fork signal safety for single-threaded processes [BZ #19703]
and the follow-up fix for a regression
commit 669ff911e2571f74a2668493e326ac9a505776bd
Author: Florian Weimer <fweimer@redhat.com>
Date: Fri Feb 8 12:46:19 2019 +0100
nptl: Avoid fork handler lock for async-signal-safe fork [BZ #24161]
we have an async-signal-safe fork for single-threaded processes.
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>From glibc-bugs-return-47407-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 14:53:29 2020
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Subject: [Bug manual/25595] New: Impove the quality of dynamic linker documentation
Date: Mon, 24 Feb 2020 14:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25595
Bug ID: 25595
Summary: Impove the quality of dynamic linker documentation
Product: glibc
Version: 2.32
Status: NEW
Severity: normal
Priority: P2
Component: manual
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
CC: mtk.manpages at gmail dot com
Target Milestone: ---
The manual lacks a good chapter explaining dynamic linking.
We should integrate Ben Woodard's work in this area and update the manual.
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug manual/25595] Impove the quality of dynamic linker documentation
Date: Mon, 24 Feb 2020 14:54:00 -0000
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--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Created attachment 12317
--> https://sourceware.org/bugzilla/attachment.cgi?id=12317&action=edit
0001-Add-a-new-chapter-covering-dynamic-linking-to-the-gl(1).patch
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Subject: [Bug manual/25595] Impove the quality of dynamic linker documentation
Date: Mon, 24 Feb 2020 14:54:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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See Also| |https://bugzilla.redhat.com
| |/show_bug.cgi?id=1420041
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>From glibc-bugs-return-47410-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 15:00:00 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25596] New: Investigate atomicity of sigsuspend/sigpause
Date: Mon, 24 Feb 2020 15:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25596
Bug ID: 25596
Summary: Investigate atomicity of sigsuspend/sigpause
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: fweimer at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Flags: security-
We have received a downstream bug report that sigsuspend/sigpause are not
atomic.
This needs further investigation. It is likely that sigpause (which takes a
signal number) cannot be implemented properly with kernel support. sigsuspend
should work today as expected.
The Austin Group has clarified that atomicity is required for both functions:
https://www.austingroupbugs.net/view.php?id=1201
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>From glibc-bugs-return-47411-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 15:00:45 2020
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Subject: [Bug libc/25596] Investigate atomicity of sigsuspend/sigpause
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Florian Weimer <fweimer at redhat dot com> changed:
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| |.net/view.php?id=1201
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>From glibc-bugs-return-47412-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 15:14:17 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25596] Investigate atomicity of sigsuspend/sigpause
Date: Mon, 24 Feb 2020 15:14:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
sigpause is implemented as a wrapper around sigsuspend, so it should inherit
the atomicity of sigsuspend. And if sigsuspend isn't atomic, that's a kernel
bug.
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>From glibc-bugs-return-47413-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 16:01:31 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25596] Investigate atomicity of sigsuspend/sigpause
Date: Mon, 24 Feb 2020 16:01:00 -0000
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
At the very least, sigpause does not compute the signal mask for sigsuspend in
an atomic fashion with regards to sigprocmask from a signal handler. But this
is not what the downstream bug is about.
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From: "woodard at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/24943] Support DT_AUDIT, DT_DEPAUDIT in the dynamic linker
Date: Mon, 24 Feb 2020 16:17:00 -0000
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Ben Woodard <woodard at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |woodard at redhat dot com
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From: "girish946 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug argparse/19040] argp child parser's .doc gets somewhat mangled if parent has .doc too
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girish <girish946 at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |girish946 at gmail dot com
--- Comment #1 from girish <girish946 at gmail dot com> ---
In this case, the argument "int post" to the argp_doc is not reset after parent
doc, so only the later part of child doc is printed and PRE_DOC for child is
ignored.
After resetting PRE_DOC for child, the output looks like.
$ ./bug-14 --help
Usage: bug-14 [OPTION...]
Before (parent)
Before (child)
-?, --help Give this help list
--usage Give a short usage message
After (parent)
After (child)
If that output is correct, the patch looks like:
diff --git a/argp/argp-help.c b/argp/argp-help.c
index 2bcd6549fd..824092e239 100644
--- a/argp/argp-help.c
+++ b/argp/argp-help.c
@@ -1465,10 +1465,10 @@ argp_doc (const struct argp *argp, const struct
argp_state *state,
size_t inp_text_limit = 0;
const char *doc = dgettext (argp->argp_domain, argp->doc);
const struct argp_child *child = argp->children;
-
+ char *vt = 0;
if (doc)
{
- char *vt = strchr (doc, '\v');
+ vt = strchr (doc, '\v');
inp_text = post ? (vt ? vt + 1 : 0) : doc;
inp_text_limit = (!post && vt) ? (vt - doc) : 0;
}
@@ -1499,7 +1499,12 @@ argp_doc (const struct argp *argp, const struct
argp_state *state,
if (text == inp_text && inp_text_limit)
__argp_fmtstream_write (stream, inp_text, inp_text_limit);
else
- __argp_fmtstream_puts (stream, text);
+ {
+ if ((!vt && !child) || (text == inp_text && !first_only))
+ {
+ __argp_fmtstream_puts (stream, text);
+ }
+ }
if (__argp_fmtstream_point (stream) > __argp_fmtstream_lmargin (stream))
__argp_fmtstream_putc (stream, '\n');
@@ -1530,11 +1535,21 @@ argp_doc (const struct argp *argp, const struct
argp_state *state,
}
if (child)
- while (child->argp && !(first_only && anything))
- anything |=
- argp_doc ((child++)->argp, state,
- post, anything || pre_blank, first_only,
- stream);
+ while (child->argp ){
+ if( !(first_only && anything) ){
+ anything |=
+ argp_doc ((child++)->argp, state,
+ post, anything || pre_blank, first_only,
+ stream);
+ }else{
+ anything |=
+ argp_doc ((child++)->argp, state,
+ 0, anything || pre_blank, first_only,
+ stream);
+
+ }
+
+ }
return anything;
}
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>From glibc-bugs-return-47416-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 18:11:19 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug libc/25596] Investigate atomicity of sigsuspend/sigpause
Date: Mon, 24 Feb 2020 18:11:00 -0000
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
A signal handler is not supposed to modify the saved signal mask.
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>From glibc-bugs-return-47417-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Feb 24 23:33:57 2020
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug manual/25595] Impove the quality of dynamic linker documentation
Date: Mon, 24 Feb 2020 23:33:00 -0000
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--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
As a reminder, there were many comments on the previous posting of this
patch that need to be addressed.
https://sourceware.org/ml/libc-alpha/2017-10/threads.html#00582
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>From glibc-bugs-return-47418-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 25 12:05:38 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug network/25481] getaddrinfo() doesn't resolve IPv4 localhost, when an unrelated IPv4 long line is present in the /etc/hosts
Date: Tue, 25 Feb 2020 12:05:00 -0000
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--- Comment #2 from pavel.devecka at gmail dot com ---
Due to inability to test later glibc version in a prod environment I did below
testing only. (getent ahostsv4 localhost)
OS version glibc version Issue observed Note
=================================================================================
openSUSE Leap 15.1 2.26-lp151.18.7 No live CD
Ubuntu 18.04.4 LTS 2.27-3ubuntu1 No installed
desktop
Ubuntu 19.10 2.30-0ubuntu2 No live CD
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>From glibc-bugs-return-47419-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 25 12:07:21 2020
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Subject: [Bug network/25481] getaddrinfo() doesn't resolve IPv4 localhost, when an unrelated IPv4 long line is present in the /etc/hosts
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Florian Weimer <fweimer at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #3 from Florian Weimer <fweimer at redhat dot com> ---
Thanks for the feedback, closing as a duplicate.
*** This bug has been marked as a duplicate of bug 18991 ***
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CC| |pavel.devecka at gmail dot com
--- Comment #13 from Florian Weimer <fweimer at redhat dot com> ---
*** Bug 25481 has been marked as a duplicate of this bug. ***
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>From glibc-bugs-return-47421-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Feb 25 16:26:36 2020
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Subject: [Bug libc/23249] Epyc and other current AMD CPUs do not select the "haswell" platform subdirectory
Date: Tue, 25 Feb 2020 16:26:00 -0000
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--- Comment #7 from Joey Riches <josephriches at gmail dot com> ---
Sorry to necro an old thread but I wanted to know if there was any more
discussion around this?
I patched cpu-features.c to allow arch_kind_amd cpus to match the haswell
platform definition and have been getting good very good performance results
with the glibc-bench benchmarks as well as a haswell optimized openblas which
in turn improved results for R and octave (on a znver2 cpu).
It seems intel as already has done most of the hard work for amd here?
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Subject: [Bug libc/23249] Epyc and other current AMD CPUs do not select the "haswell" platform subdirectory
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--- Comment #8 from Florian Weimer <fweimer at redhat dot com> ---
(In reply to Joey Riches from comment #7)
> Sorry to necro an old thread but I wanted to know if there was any more
> discussion around this?
I'm still blocked until I get definitive feedback from AMD.
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Subject: [Bug dynamic-link/11787] Program with large TLS segments fail.
Date: Wed, 26 Feb 2020 02:09:00 -0000
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--- Comment #49 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Wang Liushuai from comment #48)
> Hi guys,
>
> In ByteDance, we hit this Glibc bug twice in real-world production and
> adopted the fix based on the OpenJDK solution. However, these temporary
> fixes are not extensible. In the end, it needs to be fixed on the Glibc side.
Thanks for that data point. It helps me prioritize this.
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To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25486] RFE: Do not rely on symbol interposition from libc.so into ld.so
Date: Wed, 26 Feb 2020 15:55:00 -0000
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--- Comment #15 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=758599bc9dcc5764e862bd9e1613c5d1e6efc5d3
commit 758599bc9dcc5764e862bd9e1613c5d1e6efc5d3
Author: Florian Weimer <fweimer@redhat.com>
Date: Wed Feb 26 15:58:23 2020 +0100
elf: Apply attribute_relro to pointers in elf/dl-minimal.c
The present code leaves the function pointers unprotected, but moves
some of the static functions into .data.rel.ro instead. This causes
the linker to produce an allocatable, executable, writable section
and eventually an RWX load segment. Not only do we really do not
want that, it also breaks valgrind because valgrind does not load
debuginfo from the mmap interceptor if all it sees are RX and RWX
mappings.
Fixes commit 3a0ecccb599a6b1ad4b149dc569c0080e92d057b ("ld.so: Do not
export free/calloc/malloc/realloc functions [BZ #25486]").
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>From glibc-bugs-return-47425-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 27 00:50:59 2020
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From: "kenneth.chin at codebless dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug localedata/25605] New: Add en_MY locale
Date: Thu, 27 Feb 2020 00:50:00 -0000
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Bug ID: 25605
Summary: Add en_MY locale
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Add new locale for English (Malaysia) [en_MY]. It will be similar to Malay
(Malaysia) [ms_MY] but wordings in English instead of Malay.
The en_MY locale is listed in Unicode CLDR.
The en_MY locale is supported in Windows since Vista.
https://www.unicode.org/cldr/charts/latest/summary/en.html
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>From glibc-bugs-return-47426-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 27 15:15:44 2020
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Subject: [Bug time/25606] New: Add a new API to query time-zone data from the tzdata files.
Date: Thu, 27 Feb 2020 15:15:00 -0000
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Bug ID: 25606
Summary: Add a new API to query time-zone data from the tzdata
files.
Product: glibc
Version: 2.32
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This is an enhancement request to add the ability to query time-zone data from
the tzdata files.
See:
https://sourceware.org/glibc/wiki/NewTimeZoneAPI
https://sourceware.org/ml/libc-alpha/2014-04/msg00045.html
https://bugzilla.redhat.com/show_bug.cgi?id=1077902
There is also a C++ API being designed for this.
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p0355r7.html#time.timezone
https://howardhinnant.github.io/date/tz.html
https://github.com/HowardHinnant/date
It would be good to have such an API for glibc, but perhaps if the scope is
limited to what is currently implemented in NetBSD it might be tractable.
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| |/show_bug.cgi?id=1077902
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>From glibc-bugs-return-47428-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 27 18:14:37 2020
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Subject: [Bug time/25606] Add a new API to query time-zone data from the tzdata files.
Date: Thu, 27 Feb 2020 18:14:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
See bug 17651 requesting the functions from tzcode.
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>From glibc-bugs-return-47429-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 27 19:24:27 2020
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Subject: [Bug time/17651] Expose thread-safe timezone API
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| |illa/show_bug.cgi?id=25606
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>From glibc-bugs-return-47431-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Feb 27 20:20:57 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/14666] intermittent tst-waitid failures
Date: Thu, 27 Feb 2020 20:20:00 -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 Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b3b6a40ab9ad374a85f347adf1725760f1238eb5
commit b3b6a40ab9ad374a85f347adf1725760f1238eb5
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Tue Nov 19 17:21:26 2019 -0300
posix: Refactor tst-waitid (BZ #14666)
The main changes are:
- Adapt to libsupport.
- Synchronize the signal handler using atomics.
- Replace waitpid by waitid calls.
- Use support_process_state_wait to wait for child state.
- Add tests for P_PGID and P_ALL.
- Use sigwaitinfo instead of global state set by the signal handler.
Checked on x86_64-linux-gnu and i686-linux-gnu.
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--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
I think the C++ API is severely broken, at least in the version that will be in
the ISO C++20 standard.
There is a Python API proposal as well:
https://discuss.python.org/t/pep-615-support-for-the-iana-time-zone-database-in-the-standard-library/3468
It also does not favor transparent reloading of time zone data. I'm fairly sure
that this is exactly what our users want, though.
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Subject: [Bug libc/25608] New: statfs64 fields has wrong signedness for arm32
Date: Fri, 28 Feb 2020 13:04:00 -0000
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Bug ID: 25608
Summary: statfs64 fields has wrong signedness for arm32
Product: glibc
Version: unspecified
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: odin at ugedal dot com
CC: drepper.fsp at gmail dot com
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The signedness for the fields in statfs64, and applies to the fields with the
type "__statfs_word" in the kernel. See:
https://github.com/torvalds/linux/blob/v5.5/include/uapi/asm-generic/statfs.h#L47-L58
There is a comment on the top of the file stating:
/*
* Most 64-bit platforms use 'long', while most 32-bit platforms use '__u32'.
* Yes, they differ in signedness as well as size.
* Special cases can override it for themselves -- except for S390x, which
* is just a little too special for us. And MIPS, which I'm not touching
* with a 10' pole.
*/
https://github.com/torvalds/linux/blob/v5.5/include/uapi/asm-generic/statfs.h#L8-L21
The field "Type" can have the value 0xcafe4a11 for BPF_FS_MAGIC
(https://github.com/torvalds/linux/blob/v5.5/include/uapi/linux/magic.h#L88),
and when the field is signed, the value overflows and ends up as -0x3501b5ef.
A lot of languages generate their types from libc, and this results in the type
being seen as signed. Here is an example for rust:
http://rust-lang.github.io/libc/armv7-unknown-linux-gnueabihf/libc/struct.statfs.html.
I am not that familiar with the internals in libc, or if this even can be
changed, but it looks like the type comes from here:
https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/bits/statfs.h;h=ccdc6222f605ed286fd7e93a1e74fb59b300840a;hb=HEAD#l26
The type __fsword_t is now defined from __FSWORD_T_TYPE, and that type is
defined as int (then signed) for 32 bit systems. If this is the error, and can
be fixed without breaking compatibility, i'll be happy to create a patch. :)
Devies tested:
Linux ASUS-tinkerboard-s 5.4.10-rockchip #19.11.8 SMP PREEMPT Sat Jan 11
22:00:07 CET 2020 armv7l GNU/Linux
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Subject: [Bug libc/20543] Please move from .gnu.linkonce to comdat
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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 Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=b5b7fb76e15c0db545aa11a3ce88f836e5d01a19
commit b5b7fb76e15c0db545aa11a3ce88f836e5d01a19
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Fri Feb 28 10:46:14 2020 -0300
i386: Use comdat instead of .gnu.linkonce for i386 setup pic register (BZ
#20543)
GCC has moved from using .gnu.linkonce for i386 setup pic register with
minimum current version (as for binutils minimum binutils that support
comdat).
Trying to pinpoint when binutils has added comdat support for i686, it
seems it was around 2004 [1]. I also checking with some ancient
binutils older than 2.16 I see:
test.o: In function `__x86.get_pc_thunk.bx':
test.o(.text.__x86.get_pc_thunk.bx+0x0): multiple definition of
`__x86.get_pc_thunk.bx'
/usr/lib/gcc/x86_64-linux-gnu/5/../../../i386-linux-gnu/crti.o(.gnu.linkonce.t.__x86.get_pc_thunk.bx+0x0):
first defined here
Which seems that such version can not handle either comdat at all or
a mix of linkonce and comdat. For binutils 2.16.1 I am getting a
different issue trying to link a binary with and more recent
ctri.o (unrecognized relocation (0x2b) in section `.init', which is
R_386_GOT32X and old binutils won't generate it anyway).
So I think that either unlikely someone will use an older binutils than
the one used to glibc and even this scenario may fail with some issue
as the R_386_GOT32X. Also, 2.16.1 is quite old and not really supported
(glibc itself required 2.25).
Checked on i686-linux-gnu.
[1] https://gcc.gnu.org/ml/gcc/2004-05/msg00030.html
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Subject: [Bug libc/20543] Please move from .gnu.linkonce to comdat
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--- Comment #7 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.32.
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To: glibc-bugs@sourceware.org
Subject: [Bug nptl/22853] Heap address of pthread_create thread is aligned.
Date: Fri, 28 Feb 2020 20:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22853
Salvatore Bonaccorso <carnil at debian dot org> changed:
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>From glibc-bugs-return-47441-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 28 23:40:07 2020
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From: "conanhc at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25615] New: dlopen RTLD_NOLOAD optimization
Date: Fri, 28 Feb 2020 23:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25615
Bug ID: 25615
Summary: dlopen RTLD_NOLOAD optimization
Product: glibc
Version: 2.31
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: conanhc at gmail dot com
Target Milestone: ---
When dlopen with RTLD_NOLOAD flag without RTLD_GLOBAL promotion, loader should
simply return the link_map or NULL and promote other flags like RTLD_NODELETE.
Loader shouldn't need to process any dependencies. In dl_open_worker, loader
should avoid calling _dl_map_object_deps. _dl_map_object_deps is very time
consuming on low-end platforms with lots of library dependencies.
dl_open_worker already have a similar check for libraries that are directly
dlopened
/* It was already open. */
if (__glibc_unlikely (new->l_searchlist.r_list != NULL))
{
/* Let the user know about the opencount. */
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_FILES))
_dl_debug_printf ("opening file=%s [%lu]; direct_opencount=%u\n\n",
new->l_name, new->l_ns, new->l_direct_opencount);
/* If the user requested the object to be in the global
namespace but it is not so far, prepare to add it now. This
can raise an exception to do a malloc failure. */
if ((mode & RTLD_GLOBAL) && new->l_global == 0)
add_to_global_resize (new);
/* Mark the object as not deletable if the RTLD_NODELETE flags
was passed. */
if (__glibc_unlikely (mode & RTLD_NODELETE))
{
if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_FILES)
&& !new->l_nodelete_active)
_dl_debug_printf ("marking %s [%lu] as NODELETE\n",
new->l_name, new->l_ns);
new->l_nodelete_active = true;
}
/* Finalize the addition to the global scope. */
if ((mode & RTLD_GLOBAL) && new->l_global == 0)
add_to_global_update (new);
assert (_dl_debug_initialize (0, args->nsid)->r_state == RT_CONSISTENT);
return;
}
However, this does not cover the case when we dlopen(RTLD_NOLOAD) a library
thats a dependency of program or dependency of a dlopened library. Loader sill
calls _dl_map_object_deps; load the dependencies, and then generates
l_searchlist; so subsequence calls can skip it.
An optimization can be made, such as if ((mode & RTLD_NOLOAD) && !((mode &
RTLD_GLOBAL) && new->l_global == 0)), loader simply promotes any other flag,
and returns.
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>From glibc-bugs-return-47442-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Feb 28 23:50:45 2020
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From: "conanhc at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25615] dlopen RTLD_NOLOAD optimization
Date: Fri, 28 Feb 2020 23:50:00 -0000
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Conan Huang <conanhc at gmail dot com> changed:
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----------------------------------------------------------------------------
Severity|minor |normal
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>From glibc-bugs-return-47443-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Mar 02 15:21:50 2020
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Subject: [Bug dynamic-link/15971] No interface for debugger access to libraries loaded with dlmopen
Date: Mon, 02 Mar 2020 15:21:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
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>From glibc-bugs-return-47444-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Mar 02 15:26:51 2020
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug nptl/25619] New: pthread_rwlock_rdlock && POSIX 2008 compliance
Date: Mon, 02 Mar 2020 15:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25619
Bug ID: 25619
Summary: pthread_rwlock_rdlock && POSIX 2008 compliance
Product: glibc
Version: 2.32
Status: NEW
Severity: normal
Priority: P2
Component: nptl
Assignee: unassigned at sourceware dot org
Reporter: carlos at redhat dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
There is a rather long discussion bout pthread rwlock conformance to POSIX
2008, and you can see the details here:
https://bugzilla.redhat.com/show_bug.cgi?id=1410052
The summary is that glibc does not comply with POSIX 2008 in that we implement
the interfaces but not all the semantics.
We need to review the conformance and decide if we will ever implement the
requested changes, or at the very least document in the manual that the
interfaces are not conforming even though we define _POSIX_PRIORITY_SCHEDULING
to a non-zero value.
The worry is that defining _POSIX_PRIORITY_SCHEDULING to a zero value, but
still defining the functions (as Eric Blake suggests and Florian comments on)
will cause no end of trouble with code breaking because the functions are not
defined.
In summary:
- Fix the documentation.
- Potentially fix hte interfaces.
- Potentially define a new value in POSIX for the glibc/linux case.
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>From glibc-bugs-return-47445-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Mar 02 19:55:59 2020
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From: "regiwils at cisco dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25620] New: ### Summary An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a
Date: Mon, 02 Mar 2020 19:55:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25620
Bug ID: 25620
Summary: ### Summary An exploitable signed comparison
vulnerability exists in the ARMv7 memcpy()
implementation of GNU glibc. Calling memcpy() (on
ARMv7 targets that utilize the GNU glibc
implementation) with a negative value for the 'num'
parameter results in a
Product: glibc
Version: 2.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: regiwils at cisco dot com
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 12334
--> https://sourceware.org/bugzilla/attachment.cgi?id=12334&action=edit
TALOS-2020-1019 security advisory
### Summary
An exploitable signed comparison vulnerability exists in the ARMv7 memcpy()
implementation of GNU glibc. Calling memcpy() (on ARMv7 targets that utilize
the GNU glibc implementation) with a negative value for the 'num' parameter
results in a signed comparison vulnerability.
If an attacker underflows the 'num' parameter to memcpy(), this vulnerability
could lead to undefined behavior such as writing to out-of-bounds memory and
potentially remote code execution. Furthermore, this memcpy() implementation
allows for program execution to continue in scenarios where a segmentation
fault or crash should have occurred. The dangers occur in that subsequent
execution and iterations of this code will be executed with this corrupted
data.
### Tested Versions
GNU glibc 2.30.9000
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>From glibc-bugs-return-47446-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Mar 02 21:57:35 2020
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From: "joseph at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25620] ### Summary An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a
Date: Mon, 02 Mar 2020 21:57:00 -0000
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--- Comment #1 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Note that the glibc 2.30 NEWS file contains the entry:
* Memory allocation functions malloc, calloc, realloc, reallocarray, valloc,
pvalloc, memalign, and posix_memalign fail now with total object size
larger than PTRDIFF_MAX. This is to avoid potential undefined behavior with
pointer subtraction within the allocated object, where results might
overflow the ptrdiff_t type.
Thus any size specified with the high bit set exceeds the size of the
object being copied, so resulting in undefined behavior, so I don't see a
security vulnerability here in 2.30 and later, unless you're claiming it's
still valid to allocate over half the address space in a single allocation
with mmap. (Of course memcpy is also invalid with overlapping copies, but
there's a de facto GNU extension to allow the source and destination
pointers to be equal.)
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>From glibc-bugs-return-47447-listarch-glibc-bugs=sources.redhat.com@sourceware.org Mon Mar 02 22:33:15 2020
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From: "dj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug build/23991] shell-container typo in run_command_array
Date: Mon, 02 Mar 2020 22:33:00 -0000
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Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from dj at redhat dot com <dj at redhat dot com> ---
Fixed in 542160f0b6a7c26758c9575a8876f6624a5dd65f
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Salvatore Bonaccorso <carnil at debian dot org> changed:
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Subject: [Bug libc/25623] New: test-sysvmsg, test-sysvsem, test-sysvshm
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Bug ID: 25623
Summary: test-sysvmsg, test-sysvsem, test-sysvshm
Product: glibc
Version: 2.31
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on old kernel
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Michael Hudson-Doyle <michael.hudson at canonical dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|test-sysvmsg, test-sysvsem, |test-sysvmsg, test-sysvsem,
|test-sysvshm |test-sysvshm fail with 2.31
| |on old kernel
--- Comment #1 from Michael Hudson-Doyle <michael.hudson at canonical dot com> ---
Building glibc 2.31 on an Ubuntu builder, which runs this kernel:
Kernel version: Linux lgw01-amd64-037 4.4.0-174-generic #204-Ubuntu SMP Wed Jan
29 06:41:01 UTC 2020 x86_64
Yields these failures (when testing ia32):
----------
FAIL: sysvipc/test-sysvmsg
original exit status 1
error: test-sysvmsg.c:98: msgid_ds::msg_perm::mode (37074000644) != 644
error: 1 test failures
----------
----------
FAIL: sysvipc/test-sysvsem
original exit status 1
error: test-sysvsem.c:91: semid_ds::sem_perm::mode (36733400644) != 644
error: 1 test failures
----------
----------
FAIL: sysvipc/test-sysvshm
original exit status 1
error: test-sysvshm.c:93: shmid_ds::shm_perm::mode (36734200666) != 666
error: 1 test failures
----------
The tests do not fail with 4.15 or 5.4. I sort of assume that
https://sourceware.org/bugzilla/show_bug.cgi?id=18231 but haven't checked. I'm
not sure what has changed in the kernel but the whole area is extremely
confusing with the disagreements about the size of mode_t and so on.
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on old kernel
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Michael Hudson-Doyle <michael.hudson at canonical dot com> changed:
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CC| |adhemerval.zanella at linaro dot o
| |rg,
| |michael.hudson at canonical dot co
| |m
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on old kernel
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--- Comment #2 from Michael Hudson-Doyle <michael.hudson at canonical dot com> ---
To be clear, this is a fairly low priority thing.
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on 32 bit and old kernel
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Michael Hudson-Doyle <michael.hudson at canonical dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|test-sysvmsg, test-sysvsem, |test-sysvmsg, test-sysvsem,
|test-sysvshm fail with 2.31 |test-sysvshm fail with 2.31
|on old kernel |on 32 bit and old kernel
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>From glibc-bugs-return-47455-listarch-glibc-bugs=sources.redhat.com@sourceware.org Tue Mar 03 13:52:09 2020
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on 32 bit and old kernel
Date: Tue, 03 Mar 2020 13:52:00 -0000
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--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
I think this could be considered a kernel bug that it doesn't clear the
padding.
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--- Comment #4 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
I could reproduce it on a 3.10 kernel (centos7), but it does look like a kernel
bug imho. The issue seems that newer kernel zero the ipc64_perm padding
related to mode size, while on older releases it just updates the specific
field.
On Linux 3.10 for i686 __NR_ipc syscall on a x86_64 kernel the compat code will
be used:
ipc/compat.c:331 #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
ipc/compat.c:332 COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int,
second,
ipc/compat.c:333 u32, third, compat_uptr_t, ptr, u32, fifth)
ipc/compat.c:334 {
[...]
ipc/compat.c:389 case MSGCTL:
ipc/compat.c:390 return compat_sys_msgctl(first, second,
compat_ptr(ptr));
ipc/compat.c:501 long compat_sys_msgctl(int first, int second, void __user
*uptr)
ipc/compat.c:502 {
ipc/compat.c:503 int err, err2;
ipc/compat.c:504 struct msqid64_ds m64;
ipc/compat.c:505 int version = compat_ipc_parse_version(&second);
ipc/compat.c:119 static inline int compat_ipc_parse_version(int *cmd)
ipc/compat.c:120 {
[...]
ipc/compat.c:134 /* With the asm-generic APIs, we always use the 64-bit
versions. */
ipc/compat.c:135 return IPC_64;
[...]
ipc/compat.c:137 }
The x86 does not set CONFIG_ARCH_WANT_COMPAT_IPC_PARSE_VERSION (only arm64),
so 'version' will be set to IPC_64 and 'second' will be 'IPC_64|IPC_STAT'.
ipc/compat.c:506 void __user *p;
ipc/compat.c:507
ipc/compat.c:508 memset(&m64, 0, sizeof(m64));
[...]
ipc/compat.c:532 case IPC_STAT:
ipc/compat.c:533 case MSG_STAT:
ipc/compat.c:534 p = compat_alloc_user_space(sizeof(m64));
ipc/compat.c:535 err = sys_msgctl(first, second, p);
ipc/compat.c:536 if (err < 0)
ipc/compat.c:537 break;
ipc/compat.c:538 if (copy_from_user(&m64, p, sizeof(m64)))
ipc/compat.c:539 err2 = -EFAULT;
ipc/compat.c:540 else if (version == IPC_64)
ipc/compat.c:541 err2 = put_compat_msqid64_ds(&m64,
uptr);
Finally 'put_compat_msqid64_ds' is implemented as:
ipc/compat.c:463 static inline int put_compat_msqid64_ds(struct msqid64_ds
*m64,
ipc/compat.c:464 struct compat_msqid64_ds
__user *up64)
ipc/compat.c:465 {
ipc/compat.c:466 int err;
ipc/compat.c:467
ipc/compat.c:468 if (!access_ok(VERIFY_WRITE, up64, sizeof(*up64)))
ipc/compat.c:469 return -EFAULT;
ipc/compat.c:470 err = __put_compat_ipc64_perm(&m64->msg_perm,
&up64->msg_perm);
ipc/compat.c:471 err |= __put_user(m64->msg_stime, &up64->msg_stime);
ipc/compat.c:472 err |= __put_user(m64->msg_rtime, &up64->msg_rtime);
ipc/compat.c:473 err |= __put_user(m64->msg_ctime, &up64->msg_ctime);
ipc/compat.c:474 err |= __put_user(m64->msg_cbytes, &up64->msg_cbytes);
ipc/compat.c:475 err |= __put_user(m64->msg_qnum, &up64->msg_qnum);
ipc/compat.c:476 err |= __put_user(m64->msg_qbytes, &up64->msg_qbytes);
ipc/compat.c:477 err |= __put_user(m64->msg_lspid, &up64->msg_lspid);
ipc/compat.c:478 err |= __put_user(m64->msg_lrpid, &up64->msg_lrpid);
ipc/compat.c:479 return err;
ipc/compat.c:480 }
And
ipc/compat.c:161 static inline int __put_compat_ipc64_perm(struct ipc64_perm
*p64,
ipc/compat.c:162 struct
compat_ipc64_perm __user *up64)
ipc/compat.c:163 {
ipc/compat.c:164 int err;
ipc/compat.c:165
ipc/compat.c:166 err = __put_user(p64->key, &up64->key);
ipc/compat.c:167 err |= __put_user(p64->uid, &up64->uid);
ipc/compat.c:168 err |= __put_user(p64->gid, &up64->gid);
ipc/compat.c:169 err |= __put_user(p64->cuid, &up64->cuid);
ipc/compat.c:170 err |= __put_user(p64->cgid, &up64->cgid);
ipc/compat.c:171 err |= __put_user(p64->mode, &up64->mode);
ipc/compat.c:172 err |= __put_user(p64->seq, &up64->seq);
ipc/compat.c:173 return err;
ipc/compat.c:174 }
So since '__kernel_mode_t' on i686 is still 16-bits, line 171 will not update
the padding value kernel defines, leaving the user passed value unchanged.
This changed on Linux master, where the 'msgctl' syscall issues:
ipc/syscall.c:129 #ifdef CONFIG_ARCH_WANT_OLD_COMPAT_IPC
ipc/syscall.c:130 int compat_ksys_ipc(u32 call, int first, int second,
ipc/syscall.c:131 u32 third, compat_uptr_t ptr, u32 fifth)
ipc/syscall.c:132 {
[...]
ipc/syscall.c:179 case MSGCTL:
ipc/syscall.c:180 return compat_ksys_old_msgctl(first, second,
compat_ptr(ptr));
ipc/msg.c:770 long compat_ksys_old_msgctl(int msqid, int cmd, void __user
*uptr)
ipc/msg.c:771 {
ipc/msg.c:772 int version = compat_ipc_parse_version(&cmd);
ipc/util.h:273 static inline int compat_ipc_parse_version(int *cmd)
ipc/util.h:274 {
ipc/util.h:275 int version = *cmd & IPC_64;
ipc/util.h:276 *cmd &= ~IPC_64;
ipc/util.h:277 return version;
ipc/util.h:278 }
So 'version' will be set to IPC_64 and 'cmd' to IPC_STAT.
ipc/msg.c:773
ipc/msg.c:774 return compat_ksys_msgctl(msqid, cmd, uptr, version);
ipc/msg.c:775 }
ipc/msg.c:722 static long compat_ksys_msgctl(int msqid, int cmd, void __user
*uptr, int version)
ipc/msg.c:723 {
ipc/msg.c:724 struct ipc_namespace *ns;
ipc/msg.c:725 int err;
ipc/msg.c:726 struct msqid64_ds msqid64;
[...]
ipc/msg.c:744 case IPC_STAT:
ipc/msg.c:745 case MSG_STAT:
ipc/msg.c:746 case MSG_STAT_ANY:
ipc/msg.c:747 err = msgctl_stat(ns, msqid, cmd, &msqid64);
ipc/msg.c:748 if (err < 0)
ipc/msg.c:749 return err;
ipc/msg.c:750 if (copy_compat_msqid_to_user(uptr, &msqid64,
version))
ipc/msg.c:751 err = -EFAULT;
ipc/msg.c:752 return err;
[...]
ipc/msg.c:687 static int copy_compat_msqid_to_user(void __user *buf, struct
msqid64_ds *in,
ipc/msg.c:688 int version)
ipc/msg.c:689 {
ipc/msg.c:690 if (version == IPC_64) {
ipc/msg.c:691 struct compat_msqid64_ds v;
ipc/msg.c:692 memset(&v, 0, sizeof(v));
ipc/msg.c:693 to_compat_ipc64_perm(&v.msg_perm, &in->msg_perm);
ipc/msg.c:694 v.msg_stime = lower_32_bits(in->msg_stime);
ipc/msg.c:695 v.msg_stime_high = upper_32_bits(in->msg_stime);
ipc/msg.c:696 v.msg_rtime = lower_32_bits(in->msg_rtime);
ipc/msg.c:697 v.msg_rtime_high = upper_32_bits(in->msg_rtime);
ipc/msg.c:698 v.msg_ctime = lower_32_bits(in->msg_ctime);
ipc/msg.c:699 v.msg_ctime_high = upper_32_bits(in->msg_ctime);
ipc/msg.c:700 v.msg_cbytes = in->msg_cbytes;
ipc/msg.c:701 v.msg_qnum = in->msg_qnum;
ipc/msg.c:702 v.msg_qbytes = in->msg_qbytes;
ipc/msg.c:703 v.msg_lspid = in->msg_lspid;
ipc/msg.c:704 v.msg_lrpid = in->msg_lrpid;
ipc/msg.c:705 return copy_to_user(buf, &v, sizeof(v));
So different from older versions, newer versions will first zero the buffer,
fill it, and then copy to userland with padding cleared.
It is unfortunate kernel shows this behavior, so I think the best option is
clear the high 'ipc_perm.mode' bits if '__old_ipc_perm.mode' size differs
(indicating that kernel might not clear the padding).
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To: glibc-bugs@sourceware.org
Subject: [Bug manual/25626] New: typo in libc.info
Date: Tue, 03 Mar 2020 15:01:00 -0000
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Bug ID: 25626
Summary: typo in libc.info
Product: glibc
Version: 2.31
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The section "6.1. Introduction to the Extended Characters" mentions a
non-existent function named "wgetc". It should probably read "getwc".
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Toomas Rosin <toomas at rosin dot ee> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |toomas at rosin dot ee
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on 32 bit and old kernel
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--- Comment #5 from Michael Hudson-Doyle <michael.hudson at canonical dot com> ---
Oh yes, you're right, I must have diffed the wrong kernel commits somehow
earlier when I was looking for the cause of the change. The suggested glibc
change makes sense to the extent I understand it.
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Subject: [Bug dynamic-link/25397] Legacy bitmap doesn't cover jitted code
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Legacy bitmap isn't freed |Legacy bitmap doesn't cover
|when shadow stack is |jitted code
|enabled |
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #0)
> When CET is enabled, during dlopen, dl_cet_check does:
>
> 1. Allocate legacy bitmap for each legacy DSO.
Since legacy bitmap doesn't cover jitted code generated by JIT engine
within the legacy DSO, this brings out a question of how useful legacy
bitmap is.
> 2. If SHSTK is enabled, call _dl_signal_error if there is a legacy DSO.
>
> But legacy bitmap for legacy DSOs is never cleared. We need to clear
> legacy bitmap for legacy DSOs before calling _dl_signal_error.
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Subject: [Bug manual/24638] Error in example of parsing a template string
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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=72bcc9ade00732b5b0ea0e855cc017364aea20df
commit 72bcc9ade00732b5b0ea0e855cc017364aea20df
Author: Girish Joshi <girish946@gmail.com>
Date: Wed Mar 4 13:20:07 2020 +0100
manual: Fix typo in parse_printf_format example [BZ #24638]
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Subject: [Bug manual/24638] Error in example of parsing a template string
Date: Wed, 04 Mar 2020 12:34:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |fweimer at redhat dot com
Resolution|--- |FIXED
Target Milestone|--- |2.32
--- Comment #2 from Florian Weimer <fweimer at redhat dot com> ---
Fixed for glibc 2.32.
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>From glibc-bugs-return-47463-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 14:29:59 2020
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From: "fweimer at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug math/25487] sinl() stack corruption from crafted input (CVE-2020-10029)
Date: Wed, 04 Mar 2020 14:29:00 -0000
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Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|sinl() stack corruption |sinl() stack corruption
|from crafted input |from crafted input
| |(CVE-2020-10029)
Alias| |CVE-2020-10029
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>From glibc-bugs-return-47464-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 16:38:10 2020
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Subject: [Bug math/25487] sinl() stack corruption from crafted input (CVE-2020-10029)
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Salvatore Bonaccorso <carnil at debian dot org> changed:
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>From glibc-bugs-return-47465-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 18:10:37 2020
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Subject: [Bug libc/25423] Array overflow in backtrace on powerpc
Date: Wed, 04 Mar 2020 18:10:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
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>From glibc-bugs-return-47466-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 18:22:26 2020
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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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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>From glibc-bugs-return-47467-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 20:04:03 2020
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Subject: [Bug libc/11394] locale-archive differs between x86_64-linux and i686-linux due to unintentional hash difference
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stevo <weezykush254 at gmail dot com> changed:
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>From glibc-bugs-return-47468-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 20:10:43 2020
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Subject: [Bug libc/25423] Array overflow in backtrace on powerpc
Date: Wed, 04 Mar 2020 20:10:00 -0000
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--- Comment #4 from Carlos O'Donell <carlos at redhat dot com> ---
It is a security issue that the function call would write beyond the bounds of
the input array given the size. Marked security+
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>From glibc-bugs-return-47469-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 20:14:47 2020
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug glob/25414] 'glob' use-after-free bug
Date: Wed, 04 Mar 2020 20:14:00 -0000
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--- Comment #6 from Carlos O'Donell <carlos at redhat dot com> ---
It is a security issue that the glob function has a use-after-free. Marking
security+.
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>From glibc-bugs-return-47470-listarch-glibc-bugs=sources.redhat.com@sourceware.org Wed Mar 04 21:36:56 2020
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Subject: [Bug libc/9813] pselect implementation (when not implemneted by the kernel) agriviates the race
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
--- Comment #8 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Currently only microblaze-linux-gnu is affected by this issue and the faulty
fallback code is not used when --enable-kernel=3.15 or newer is used.
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>From glibc-bugs-return-47471-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 02:27:14 2020
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To: glibc-bugs@sourceware.org
Subject: [Bug manual/25626] typo in libc.info
Date: Thu, 05 Mar 2020 02:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=25626
Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2020-03-05
CC| |carlos at redhat dot com
Assignee|unassigned at sourceware dot org |carlos at redhat dot com
Ever confirmed|0 |1
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
(In reply to Toomas Rosin from comment #0)
> The section "6.1. Introduction to the Extended Characters" mentions a
> non-existent function named "wgetc". It should probably read "getwc".
Agreed. Thank you!
Posted patch here:
https://www.sourceware.org/ml/libc-alpha/2020-03/msg00091.html
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>From glibc-bugs-return-47472-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 04:40:00 2020
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug crypt/25441] DOS attack risk caused by incomplete system password check function
Date: Thu, 05 Mar 2020 04:40:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |carlos at redhat dot com
Resolution|--- |WONTFIX
Flags| |security-
--- Comment #1 from Carlos O'Donell <carlos at redhat dot com> ---
Yes, it can take a long time to cryptographically hash long password. I don't
see this issue as a security issue unless we have concrete examples of specific
DoS issues impacting real applications. The API imposes no limits, and so we
should not either. Instead the limits need to be imposed by remote login
interfaces like ssh (disable passwords) or pam (limit maximum password size).
Limiting this at the lowest level API will not work well because we have no way
to propagate a complex failure up the software stack e.g. failed because of
policy reasons for too long password.
I'm marking this as RESOLVED/WONTFIX.
Please review:
https://sourceware.org/glibc/wiki/Security%20Process
Note: In Fedora we have moved from libcrypt.so (provided by glibc) to libxcrypt
(provided by the libxcrypt project: https://github.com/besser82/libxcrypt). We
accomplish this by building glibc with --disable-crypt, and then building
libxcrypt in the compatibility mode to provide all the backwards compatibility
required for older applications. We should continue to move forward with
libxcrypt and newer one-way hashing algorithms. Fedora 30 fully removes the
deprecated interfaces
(https://fedoraproject.org/wiki/Changes/FullyRemoveDeprecatedAndUnsafeFunctionsFromLibcrypt).
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>From glibc-bugs-return-47473-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 08:35:37 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug manual/24654] Wrong declaration of wcschr in libc manual
Date: Thu, 05 Mar 2020 08:35:00 -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=f801cf7bb146f9dd7b5e124e752c54194698e132
commit f801cf7bb146f9dd7b5e124e752c54194698e132
Author: Girish Joshi <girish946@gmail.com>
Date: Thu Mar 5 09:31:43 2020 +0100
manual: Fix wrong declaration of wcschr [BZ #24654]
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Subject: [Bug manual/24654] Wrong declaration of wcschr in libc manual
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----------------------------------------------------------------------------
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CC| |fw at deneb dot enyo.de
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--- Comment #2 from Florian Weimer <fw at deneb dot enyo.de> ---
Fixed for glibc 2.32.
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>From glibc-bugs-return-47475-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 11:48:54 2020
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Subject: [Bug math/25487] sinl() stack corruption from crafted input (CVE-2020-10029)
Date: Thu, 05 Mar 2020 11:48:00 -0000
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--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
__ieee754_rem_pio2l is used by cosl, sinl, sincosl, and tanl.
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>From glibc-bugs-return-47476-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 13:56:43 2020
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25635] New: arm: Wrong sysdep order selection for soft-fp
Date: Thu, 05 Mar 2020 13:56:00 -0000
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Bug ID: 25635
Summary: arm: Wrong sysdep order selection for soft-fp
Product: glibc
Version: 2.31
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: adhemerval.zanella at linaro dot org
CC: drepper.fsp at gmail dot com
Target Milestone: ---
The commit "arm: Split BE/LE abilist"
(1673ba87fefe019c834c09d33673d1d453ea698d) changed the soft-fp order for ARM
selection when __SOFTFP__ is defined by the compiler.
On 2.31 the sysdeps order is:
2.31
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptl
sysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/ieee754
sysdeps/generic
While on master is:
sysdeps/unix/sysv/linux/arm/le
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptl
sysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/le
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/ieee754
sysdeps/generic
It make the build select some routines (fadd, fdiv, fmul, fsub, and fma) on
ieee754/flt-32 and ieee754/dbl-64 that requires fenv support to be correctly
rounded which in turns lead to math failures since the __SOFTFP__ does not have
fenv support.
As a side note, the SH similar change ('sh: Split BE/LE abilist' -
605f38177dba31fe0d0183abb67e25a28fd37d15) does not change the soft-fp order in
relation with sysdeps/ieee754 ones.
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>From glibc-bugs-return-47477-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 13:57:04 2020
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Subject: [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
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>From glibc-bugs-return-47479-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 18:18:50 2020
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Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on 32 bit and old kernel
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #7 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
As per previous comment.
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>From glibc-bugs-return-47478-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 18:18:34 2020
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From: "adhemerval.zanella at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25623] test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31 on 32 bit and old kernel
Date: Thu, 05 Mar 2020 18:18:00 -0000
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |adhemerval.zanella at linaro dot o
| |rg
Target Milestone|--- |2.32
--- Comment #6 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.32.
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>From glibc-bugs-return-47480-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 20:06:42 2020
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/25506] configure: broken detection of STT_GNU_IFUNC when GCC defaults to PIE
Date: Thu, 05 Mar 2020 20:06:00 -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 Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=87a698a21646b7ee620923ef5ffa9735471a8ddd
commit 87a698a21646b7ee620923ef5ffa9735471a8ddd
Author: Fangrui Song <maskray@google.com>
Date: Tue Feb 4 21:55:44 2020 -0800
Improve IFUNC check [BZ #25506]
GNU ld's RISCV port does not support IFUNC. ld -no-pie produces no
relocation and the test passed incorrectly. Be more rigid by testing
IRELATIVE explicitly.
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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>From glibc-bugs-return-47481-listarch-glibc-bugs=sources.redhat.com@sourceware.org Thu Mar 05 20:07:12 2020
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Subject: [Bug build/25506] configure: broken detection of STT_GNU_IFUNC when GCC defaults to PIE
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
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| |rg
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--- Comment #3 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.32.
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>From glibc-bugs-return-47482-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 10:54:36 2020
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Subject: [Bug libc/25523] MIPS/Linux inline syscall template is miscompiled
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Aladjev Andrew <aladjev.andrew at gmail dot com> changed:
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>From glibc-bugs-return-47483-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 11:50:18 2020
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From: "quentinantonin at free dot fr" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug localedata/25639] New: Name of day wrongly spelt in Occitan
Date: Fri, 06 Mar 2020 11:50:00 -0000
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Bug ID: 25639
Summary: Name of day wrongly spelt in Occitan
Product: glibc
Version: 2.33
Status: UNCONFIRMED
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Component: localedata
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Reporter: quentinantonin at free dot fr
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Hello,
in Occitan the name of «Thursday» is not written correctly.
Indeed, it should be «dijòus» and not «dijóus».
It means replacing "dij<U00F3>us" by "dij<U00F2>us".
I hope it can be change easily and to backport to glibc 2.31.
Sources: https://st.unicode.org/cldr-apps/v#/oc/Gregorian/
https://en.wikipedia.org/wiki/Names_of_the_days_of_the_week#Romance_languages
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Subject: [Bug localedata/25639] Name of day wrongly spelt in Occitan
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25635] arm: Wrong sysdep order selection for soft-fp
Date: Fri, 06 Mar 2020 12:59:00 -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 Adhemerval Zanella
<azanella@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=af09e5e5d9ec3ca20891e61a6922eac984fcbdc4
commit af09e5e5d9ec3ca20891e61a6922eac984fcbdc4
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date: Thu Mar 5 13:14:41 2020 +0000
arm: Fix softp-fp Implies (BZ #25635)
The commit "arm: Split BE/LE abilist"
(1673ba87fefe019c834c09d33673d1d453ea698d) changed the soft-fp order for
ARM selection when __SOFTFP__ is defined by the compiler.
On 2.30 the sysdeps order is:
2.30
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptl
sysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/ieee754
sysdeps/generic
While on master is:
sysdeps/unix/sysv/linux/arm/le
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptl
sysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/le
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/ieee754
sysdeps/generic
It make the build select some routines (fadd, fdiv, fmul, fsub, and fma)
on ieee754/flt-32 and ieee754/dbl-64 that requires fenv support to be
correctly rounded which in turns lead to math failures since the
__SOFTFP__ does not have fenv support.
With this patch the order is now:
sysdeps/unix/sysv/linux/arm/le
sysdeps/unix/sysv/linux/arm
sysdeps/arm/nptl
sysdeps/unix/sysv/linux
sysdeps/nptlsysdeps/pthread
sysdeps/gnu
sysdeps/unix/inet
sysdeps/unix/sysv
sysdeps/unix/arm
sysdeps/unix
sysdeps/posix
sysdeps/arm/le/nofpu
sysdeps/arm/nofpu
sysdeps/ieee754/soft-fp
sysdeps/arm/le
sysdeps/arm
sysdeps/wordsize-32
sysdeps/ieee754/flt-32
sysdeps/ieee754/dbl-64
sysdeps/ieee754
sysdeps/generic
Checked on arm-linux-gnuaebi.
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>From glibc-bugs-return-47486-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 13:01:28 2020
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Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Version|2.31 |2.30
Resolution|--- |FIXED
Target Milestone|--- |2.32
--- Comment #2 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.32.
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Subject: [Bug libc/25423] Array overflow in backtrace on powerpc
Date: Fri, 06 Mar 2020 18:35:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Alias| |CVE-2020-1751
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Subject: [Bug glob/25414] 'glob' use-after-free bug
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Carlos O'Donell <carlos at redhat dot com> changed:
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----------------------------------------------------------------------------
Alias| |CVE-2020-1752
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>From glibc-bugs-return-47490-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 18:46:56 2020
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Subject: [Bug glob/25414] 'glob' use-after-free bug (CVE-2020-1752)
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|'glob' use-after-free bug |'glob' use-after-free bug
| |(CVE-2020-1752)
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>From glibc-bugs-return-47489-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 18:46:47 2020
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From: "carlos at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/25423] Array overflow in backtrace on powerpc (CVE-2020-1751)
Date: Fri, 06 Mar 2020 18:46:00 -0000
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Carlos O'Donell <carlos at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Array overflow in backtrace |Array overflow in backtrace
|on powerpc |on powerpc (CVE-2020-1751)
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>From glibc-bugs-return-47491-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 19:27:23 2020
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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug dynamic-link/25397] Legacy bitmap doesn't cover jitted code
Date: Fri, 06 Mar 2020 19:27:00 -0000
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--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
A testcase:
---
#include <stdio.h>
#include <sys/mman.h>
#define PAGE_SIZE 0x1000
int
main(int argc, char *argv[])
{
void (*funcp) (void);
funcp = mmap(NULL, PAGE_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
if (funcp == MAP_FAILED)
{
printf("mmap failed!\n");
return -1;
}
printf("mmap = %p\n", funcp);
/* Write RET instruction. */
*(char *) funcp = 0xc3;
funcp ();
return 0;
}
---
Compiling this with -fcf-protection=none, it fails with legacy bitmap
on CET processors since legacy bitmap doesn't cover mmap region.
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>From glibc-bugs-return-47492-listarch-glibc-bugs=sources.redhat.com@sourceware.org Fri Mar 06 19:31:34 2020
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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: glibc-bugs@sourceware.org
Subject: [Bug libc/25262] getcontext/setcontext/swapcontext unnecessarily save and restore EAX, ECX and EDX
Date: Fri, 06 Mar 2020 19:31:00 -0000
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H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |2.32
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed for 2.32 by
commit 15eab1e3e89129ab3ed03f5bdc3415b26e9caeb9
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Sat Feb 1 05:44:55 2020 -0800
i386: Don't unnecessarily save and restore EAX, ECX and EDX [BZ# 25262]
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