[apport] python2.5 crashed with SIGSEGV in XQueryExtension()

[Daniel Hahler]

Binary package hint: python2.5

While trying to reproduce Bug #97507 I have discovered this segfault.

Reproduce:
$ python
Python 2.5 (release25-maint, Mar 29 2007, 11:14:31)
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import ixf86misc
>>> ixf86misc.GetGamma(0,0)
Segmentation fault (core dumped)

ProblemType: Crash
Architecture: i386
Date: Thu Apr 5 23:07:12 2007
Dependencies:
 tzdata 2007b-0ubuntu1
 zlib1g 1:1.2.3-13ubuntu4
 belocs-locales-bin 2.4-2ubuntu2
 locales 2.3.23
 libc6 2.5-0ubuntu14
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/python2.5
Package: python2.5-minimal 2.5-5ubuntu11
PackageArchitecture: i386
ProcCmdline: python bugs/ubuntu/lp-55361
ProcCwd: /home/daniel
ProcEnviron:
 SHELL=/bin/bash
 PATH=/home/daniel/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=de_DE.UTF-8
Signal: 11
SourcePackage: python2.5
StacktraceTop:
 XQueryExtension () from /usr/lib/libX11.so.6
 XInitExtension () from /usr/lib/libX11.so.6
 XextAddDisplay () from /usr/lib/libXext.so.6
 ?? () from /usr/lib/libXxf86vm.so.1
 ?? () from /usr/lib/libXxf86vm.so.1
Uname: Linux base 2.6.20-14-generic #2 SMP Mon Apr 2 20:37:49 UTC 2007 i686 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy fuse lpadmin plugdev scanner src video

[Simon Edwards (simon-simonzone)]

Passing null pointers into C functions does cause segfaults. This is not unusual.