Bug#385911: xorg: Changing from heavy opengl apps running in fullscreen to console results in Xorg segfault

[Mihaly Bak <mihaly.bak@teknikochbygg.se>]

Package: xorg
Version: 1:7.0.23
Severity: normal

I was playing warzone2100 (http://wz.rootzilla.de/site/) which is a heavy opengl application if I switch to 
console mode( CTRL + ALT + F*)  while the game is in fullscreen and the graphics is under heavy load Xorg will segfault 

I have tryed this bug several times and Xorg segfaults everytime, I get messages like this: 
Xorg[27542]: segfault at 00007fff72a7cff8 rip 0000000000838f8d rsp 00007fff72a7d000 error 6
Xorg[22959]: segfault at 00007fffbc2aafc8 rip 00000000008ec756 rsp 00007fffbc2aafd0 error 6
in my dmesg, one for every crash.

I am running the game from my chroot which I created with this howto: 
https://alioth.debian.org/docman/view.php/30192/21/debian-amd64-howto.html

I couldnot try the bug for other games/apps since I dont know of any other opengl app the makes heavy use of graphics 
and runs in fullscreen. I was kind of unsure of the serverity on this one because this could cause data lose being that 
the entire xorg session is lost but at the same time this is a very special case bug.

Also I am running the nvidia proprietary graphics driver.

-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.17-2-amd64
Locale: LANG=sv_SE.ISO-8859-1, LC_CTYPE=sv_SE.ISO-8859-1 (charmap=ISO-8859-1) (ignored: LC_ALL set to sv_SE.ISO-8859-1)

Versions of packages xorg depends on:
ii  eterm [x-terminal-emulator]   0.9.3-1    Enlightened Terminal Emulator
ii  konsole [x-terminal-emulator] 4:3.5.4-2  X terminal emulator for KDE
ii  libgl1-mesa-dri               6.4.2-1.1  A free implementation of the OpenG
ii  libgl1-mesa-glx [libgl1-mesa- 6.4.2-1.1  A free implementation of the OpenG
ii  libglu1-mesa                  6.4.2-1.1  The OpenGL utility library (GLU)
ii  xbase-clients                 1:7.1.ds-3 miscellaneous X clients
ii  xfonts-100dpi                 1:1.0.0-2  100 dpi fonts for X
ii  xfonts-75dpi                  1:1.0.0-2  100 dpi fonts for X
ii  xfonts-base                   1:1.0.0-3  standard fonts for X
ii  xfonts-scalable               1:1.0.0-4  scalable fonts for X
ii  xkb-data                      0.8-8      X Keyboard Extension (XKB) configu
ii  xserver-xorg                  1:7.0.23   the X.Org X server
ii  xterm [x-terminal-emulator]   210-3      X terminal emulator
ii  xutils                        1:7.1.ds-1 X Window System utility programs

xorg recommends no packages.

-- no debconf information