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and subject line Bug#334112: fixed in glibc 2.3.5-8
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From: John David Anglin <[EMAIL PROTECTED]>
To: Debian Bug Tracking System <[EMAIL PROTECTED]>
Subject: libc6: SIGSEGV in linear_search_fdes
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Date: Sat, 15 Oct 2005 09:13:00 -0700
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autolearn=no version=2.60-bugs.debian.org_2005_01_02
Package: libc6
Version: 2.3.5-6.0.1
Severity: important
DWARF2 exception support is broken due to bad EH data in the .eh_frame
section of /lib/libc-2.3.5.so.
After installation of libc6 version 2.3.5-6.0.1, a number of regressions
were observed in the GCC 4.0 and 4.1 testsuites. The following failure
occurs in g++.dg/eh/forced1.C:
(gdb) r
Starting program: /home/dave/gcc-4.1/objdir/gcc/testsuite/forced1.xg
Program received signal SIGSEGV, Segmentation fault.
linear_search_fdes (ob=0xc004a1d4, this_fde=0x40acba54, pc=0x4099d663)
at unwind-dw2-fde.c:776
776 in unwind-dw2-fde.c
(gdb) bt
#0 linear_search_fdes (ob=0xc004a1d4, this_fde=0x40acba54, pc=0x4099d663)
at unwind-dw2-fde.c:776
#1 0x401ba798 in _Unwind_IteratePhdrCallback (info=Variable "info" is not
available.
)
at ../../gcc/gcc/unwind-dw2-fde-glibc.c:386
#2 0x40a90ccc in *__GI___dl_iterate_phdr (
[EMAIL PROTECTED]: 0x401ba47c <_Unwind_IteratePhdrCallback>,
data=0xc004a08c) at dl-iteratephdr.c:71
#3 0x401ba358 in _Unwind_Find_FDE (pc=0x4099d663, bases=0xc0049b80)
at ../../gcc/gcc/unwind-dw2-fde-glibc.c:417
#4 0x401b6968 in uw_frame_state_for (context=0xc0049a0c, fs=0xc0049c88)
at ../../gcc/gcc/unwind-dw2.c:975
#5 0x401b80e4 in _Unwind_ForcedUnwind_Phase2 (exc=0x22050, context=0xc0049a0c)
at unwind.inc:159
#6 0x401b84dc in _Unwind_Resume (exc=0x22050)
at unwind.inc:235
#7 0x000109d8 in doit ()
at /home/dave/gcc-4.1/gcc/gcc/testsuite/g++.dg/eh/forced1.C:71
#8 0x00010a04 in main ()
at /home/dave/gcc-4.1/gcc/gcc/testsuite/g++.dg/eh/forced1.C:79
linear_search_fdes is looking for the fde for __libc_start_main in
the .eh_frame data for libc:
(gdb) disass 0x4099d660
Dump of assembler code for function __libc_start_main:
0x4099d56c <__libc_start_main+0>: addil 1000,r19,%r1
0x4099d570 <__libc_start_main+4>: stw rp,-14(,sp)
...
Here is the fde data:
(gdb) x/20x 0x40acba40
0x40acba40 <__invoke_dynamic_linker__+126408>: 0x40a8e5fc 0x00000040
0x4c0ec0ff 0xffff0f84
0x40acba50 <__invoke_dynamic_linker__+126424>: 0x0011027b 0x40ad0116
0xffffffff 0x40acfd16
Here is the end of the .eh_frame dump:
[EMAIL PROTECTED]:/usr/lib/debug$ objdump -s -j .eh_frame libc-2.3.5.so|less
libc-2.3.5.so: file format elf32-hppa-linux
Contents of section .eh_frame:
149d00 0000000c 00000000 01000104 020c1e00 ................
...
14ea30 830b840a 85098806 00000018 00000060 ...............`
14ea40 001115fc 00000040 4c0ec0ff ffff0f84 [EMAIL PROTECTED]
14ea50 0011027b ...{
(gdb) list unwind-dw2-fde.c:776
771 {
772 const struct dwarf_cie *last_cie = 0;
773 int encoding = ob->s.b.encoding;
774 _Unwind_Ptr base = base_from_object (ob->s.b.encoding, ob);
775
776 for (; ! last_fde (ob, this_fde); this_fde = next_fde (this_fde))
static inline int
last_fde (struct object *obj __attribute__ ((__unused__)), const fde *f)
{
#ifdef DWARF2_OBJECT_END_PTR_EXTENSION
return (char *)f == obj->fde_end || f->length == 0;
#else
return f->length == 0;
#endif
}
I believe that the fde data should terminate with an fde of zero length.
This isn't the case for the libc fde data. This and the lack of fde
data for __libc_start_main causes the SEGV.
This is a regression from 2.3.2.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (650, 'testing'), (90, 'unstable')
Architecture: hppa (parisc64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-rc2-pa2
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
-- no debconf information
---------------------------------------
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>From [EMAIL PROTECTED] Sat Nov 12 20:55:01 2005
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From: Daniel Jacobowitz <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
X-Katie: $Revision: 1.56 $
Subject: Bug#334112: fixed in glibc 2.3.5-8
Message-Id: <[EMAIL PROTECTED]>
Sender: Archive Administrator <[EMAIL PROTECTED]>
Date: Sat, 12 Nov 2005 20:47:10 -0800
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Source: glibc
Source-Version: 2.3.5-8
We believe that the bug you reported is fixed in the latest version of
glibc, which is due to be installed in the Debian FTP archive:
glibc-doc_2.3.5-8_all.deb
to pool/main/g/glibc/glibc-doc_2.3.5-8_all.deb
glibc_2.3.5-8.diff.gz
to pool/main/g/glibc/glibc_2.3.5-8.diff.gz
glibc_2.3.5-8.dsc
to pool/main/g/glibc/glibc_2.3.5-8.dsc
libc6-amd64_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-amd64_2.3.5-8_i386.deb
libc6-dbg_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-dbg_2.3.5-8_i386.deb
libc6-dev-amd64_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-dev-amd64_2.3.5-8_i386.deb
libc6-dev_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-dev_2.3.5-8_i386.deb
libc6-i686_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-i686_2.3.5-8_i386.deb
libc6-pic_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-pic_2.3.5-8_i386.deb
libc6-prof_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6-prof_2.3.5-8_i386.deb
libc6-udeb_2.3.5-8_i386.udeb
to pool/main/g/glibc/libc6-udeb_2.3.5-8_i386.udeb
libc6_2.3.5-8_i386.deb
to pool/main/g/glibc/libc6_2.3.5-8_i386.deb
libnss-dns-udeb_2.3.5-8_i386.udeb
to pool/main/g/glibc/libnss-dns-udeb_2.3.5-8_i386.udeb
libnss-files-udeb_2.3.5-8_i386.udeb
to pool/main/g/glibc/libnss-files-udeb_2.3.5-8_i386.udeb
locales_2.3.5-8_all.deb
to pool/main/g/glibc/locales_2.3.5-8_all.deb
nscd_2.3.5-8_i386.deb
to pool/main/g/glibc/nscd_2.3.5-8_i386.deb
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [EMAIL PROTECTED],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Daniel Jacobowitz <[EMAIL PROTECTED]> (supplier of updated glibc package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [EMAIL PROTECTED])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.7
Date: Sat, 12 Nov 2005 19:15:29 -0500
Source: glibc
Binary: libc6-dev-amd64 libc6-i686 libc6-dev-ppc64 libc0.3-pic glibc-doc
libc1-udeb libc0.3 libc6.1-dev libc1-pic libc6-s390x libnss-files-udeb
libc1-dbg libc6-dev-sparc64 libc0.3-dev libc6-udeb libc6-dbg libc6.1-pic
libc6-dev libc0.3-prof libc6-sparcv9 libc6.1-prof libc1 locales libc6-pic
libc0.3-udeb libc1-prof libc6-ppc64 libc0.3-dbg libc6-amd64 libc6-prof libc6
libc6-sparcv9b libc6.1-udeb libc6.1-dbg nscd libc6-sparc64 libnss-dns-udeb
libc6.1 libc1-dev libc6-dev-s390x
Architecture: source i386 all
Version: 2.3.5-8
Distribution: unstable
Urgency: low
Maintainer: GNU Libc Maintainers <debian-glibc@lists.debian.org>
Changed-By: Daniel Jacobowitz <[EMAIL PROTECTED]>
Description:
glibc-doc - GNU C Library: Documentation
libc6 - GNU C Library: Shared libraries and Timezone data
libc6-amd64 - GNU C Library: 64bit Shared libraries for AMD64
libc6-dbg - GNU C Library: Libraries with debugging symbols
libc6-dev - GNU C Library: Development Libraries and Header Files
libc6-dev-amd64 - GNU C Library: 64bit Development Libraries for AMD64
libc6-i686 - GNU C Library: Shared libraries [i686 optimized]
libc6-pic - GNU C Library: PIC archive library
libc6-prof - GNU C Library: Profiling Libraries
libc6-udeb - GNU C Library: Shared libraries - udeb (udeb)
libnss-dns-udeb - GNU C Library: NSS helper for DNS - udeb (udeb)
libnss-files-udeb - GNU C Library: NSS helper for files - udeb (udeb)
locales - GNU C Library: National Language (locale) data [support]
nscd - GNU C Library: Name Service Cache Daemon
Closes: 181025 326581 334101 334112 335116 335308 335343 335821
Changes:
glibc (2.3.5-8) unstable; urgency=low
.
* Add missing build dependency on libc6-dev-ppc64 on powerpc.
* Add patch to fix sparc64 TLS build failure, from Aurelien Jarno
(Closes: #335821).
* Also restart saslauthd at upgrades, from Philipp Hug (Closes: #334101).
* Merge .eh_frame terminator fix, by Richard Sandiford (Closes: #334112).
* Merge armeb support, from Lennert Buytenhek (Closes: #335116).
* Add LSB headers to glibc.sh and nscd init scripts, from Petter
Reinholdtsen (Closes: #335308, #335343).
* Remove obsolete mountkernfs, tmpfs, and devpts.sh files from debian/.
* Temporarily set hppa back to gcc 3.4, from Steve Langasek
(Closes: #326581).
* Re-enable libidn (Closes: #181025).
Files:
66889d15c6cc139c0762a41b4c6f1cb2 1836 libs required glibc_2.3.5-8.dsc
9d66d76bb1072b8878f73b82efd585cf 313072 libs required glibc_2.3.5-8.diff.gz
05287d427d7c957389906dd66f523a04 3331900 doc optional glibc-doc_2.3.5-8_all.deb
ac99ae0656d65940dc148aff7ec6bec6 4061078 base standard locales_2.3.5-8_all.deb
2954239c202f4ca0861cbc4142f145f5 5056026 base required libc6_2.3.5-8_i386.deb
8e72076334bcaf4183c2ed144a4ea249 2684252 libdevel standard
libc6-dev_2.3.5-8_i386.deb
f036e7cd9cd8c2b2cb9efd83a45b814e 1268450 libdevel extra
libc6-prof_2.3.5-8_i386.deb
97f8284415bed6c62df5d8711d1fdcd2 1012728 libdevel optional
libc6-pic_2.3.5-8_i386.deb
7726600616c41cadd8c52317477b8f13 1063874 libs extra libc6-i686_2.3.5-8_i386.deb
3c4c8d72046d57e2e7092d22c2851b13 3253306 base required
libc6-amd64_2.3.5-8_i386.deb
7bd5dbca9f0c6d26ff4a61596ad147eb 2000316 libdevel standard
libc6-dev-amd64_2.3.5-8_i386.deb
e5519d06a864f99736a7344d8cc657f9 124878 admin optional nscd_2.3.5-8_i386.deb
984b87f3d98fba6a882ed9208cd02696 6440128 libdevel extra
libc6-dbg_2.3.5-8_i386.deb
52fcc1e0b6bc47eeff784d9ccd753baf 703942 debian-installer extra
libc6-udeb_2.3.5-8_i386.udeb
64f8fd3fd792a24026886bbecf5564c1 8274 debian-installer extra
libnss-dns-udeb_2.3.5-8_i386.udeb
a4da115b442779223041424374a3fe8b 14778 debian-installer extra
libnss-files-udeb_2.3.5-8_i386.udeb
Package-Type: udeb
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