Bug#507264: xresprobe: ddcprobe segmentation fault

[Werner Opriel <W.Opr@gmx.de>]

>> # ddcprobe 
>> Speicherzugriffsfehler
>> 
>> and in /var/log/syslog:
>> kernel: [ 3916.694691] ddcprobe[6732]: segfault at c1080 ip 00001080 sp 
00000ffa error 15 in zero (deleted)[1000+80000]

>Can you try to run 'valgrind ddcprobe' to get more information about
>what causes the segfault?

Ok, here it goes ..

~#valgrind ddcprobe
==3832== Memcheck, a memory error detector.
==3832== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==3832== Using LibVEX rev 1854, a library for dynamic binary translation.
==3832== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==3832== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation 
framework.
==3832== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==3832== For more details, rerun with: -v
==3832==
--3832-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) - 
exiting
--3832-- si_code=2;  Faulting address: 0xC1080;  sp: 0x62A91E24

valgrind: the 'impossible' happened:
   Killed by fatal signal
==3832==    at 0x3802B322: (within /usr/lib/valgrind/x86-linux/memcheck)
==3832==    by 0x5: ???
==3832==    by 0x62A918FF: ???
==3832==    by 0x3807A32A: myvprintf_int64 (m_debuglog.c:596)
==3832==    by 0x62A918DA: ???

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable
==3832==    at 0x80498E5: (within /usr/sbin/ddcprobe)
==3832==    by 0x8049FBA: (within /usr/sbin/ddcprobe)
==3832==    by 0x804A8E0: (within /usr/sbin/ddcprobe)
==3832==    by 0x804AB28: (within /usr/sbin/ddcprobe)
==3832==    by 0x4051454: (below main) (in /lib/i686/cmov/libc-2.7.so)


~# valgrind -v ddcprobe
==3875== Memcheck, a memory error detector.
==3875== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==3875== Using LibVEX rev 1854, a library for dynamic binary translation.
==3875== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==3875== Using valgrind-3.3.1-Debian, a dynamic binary instrumentation 
framework.
==3875== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==3875==
--3875-- Command line
--3875--    ddcprobe
--3875-- Startup, with flags:
--3875--    -v
--3875-- Contents of /proc/version:
--3875--   Linux version 2.6.26-2-686-bigmem (Debian 2.6.26-21lenny4) 
(dannf@debian.org) (gcc version 4.1.3 20080704 (prerelease) (Debian 
4.1.2-25)) #1 SMP Tue Mar 9 18:01:52 UTC 2010
--3875-- Arch and hwcaps: X86, x86-sse1-sse2
--3875-- Page sizes: currently 4096, max supported 4096
--3875-- Valgrind library directory: /usr/lib/valgrind
--3875-- Reading syms from /lib/ld-2.7.so (0x4000000)
--3875-- Reading debug info from /lib/ld-2.7.so...
--3875-- ... CRC mismatch (computed 58c6dbf6 wanted 58db3c41)
--3875--    object doesn't have a symbol table
--3875-- Reading syms from /usr/sbin/ddcprobe (0x8048000)
--3875--    object doesn't have a symbol table
--3875-- Reading syms from /usr/lib/valgrind/x86-linux/memcheck (0x38000000)
--3875--    object doesn't have a dynamic symbol table
--3875-- Reading suppressions file: /usr/lib/valgrind/default.supp
--3875-- Reading syms from /usr/lib/valgrind/x86-linux/vgpreload_core.so 
(0x401E000)
--3875-- Reading syms from /usr/lib/valgrind/x86-linux/vgpreload_memcheck.so 
(0x4020000)
--3875-- Reading syms from /lib/i686/cmov/libc-2.7.so (0x403B000)
--3875-- Reading debug info from /lib/i686/cmov/libc-2.7.so...
--3875-- ... CRC mismatch (computed dd505887 wanted 5643e76f)
--3875--    object doesn't have a symbol table
--3875-- REDIR: 0x40b1800 (rindex) redirected to 0x40240c0 (rindex)
--3875-- REDIR: 0x40b2680 (memmove) redirected to 0x40253e0 (memmove)
--3875-- REDIR: 0x40b26f0 (memset) redirected to 0x4025380 (memset)
--3875-- VALGRIND INTERNAL ERROR: Valgrind received a signal 11 (SIGSEGV) - 
exiting
--3875-- si_code=2;  Faulting address: 0xC1080;  sp: 0x62A91E24

valgrind: the 'impossible' happened:
   Killed by fatal signal
==3875==    at 0x3802B322: (within /usr/lib/valgrind/x86-linux/memcheck)
==3875==    by 0x5: ???
==3875==    by 0x62A918FF: ???
==3875==    by 0x3807A32A: myvprintf_int64 (m_debuglog.c:596)
==3875==    by 0x62A918DA: ???

sched status:
  running_tid=1

Thread 1: status = VgTs_Runnable
==3875==    at 0x80498E5: (within /usr/sbin/ddcprobe)
==3875==    by 0x8049FBA: (within /usr/sbin/ddcprobe)
==3875==    by 0x804A8E0: (within /usr/sbin/ddcprobe)
==3875==    by 0x804AB28: (within /usr/sbin/ddcprobe)
==3875==    by 0x4051454: (below main) (in /lib/i686/cmov/libc-2.7.so)