X server sig11 crash in _swrast_Triangle (libGLcore.so)

[Chris Radek]

Binary package hint: xserver-xorg-core

A user I support, running a fully updated 6.06LTS, reports this crash on three machines with various video cards using software rendering, running glxgears with the system loaded. It appears to be a fixed bug in Mesa: see http://bugs.freedesktop.org/show_bug.cgi?id=7205

This is the backtrace he gets, which matches the first one in the above URL. We rely on LTS and cannot update. It would be great if you could put this mesa fix into 6.06LTS for us. I can try to get any more details you need, but it looks pretty well covered in the freedesktop report. Thank you.

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x86) [0x80b4ab6]
1: [0xffffe420]
2: /usr/lib/xorg/modules/extensions/libGLcore.so(_swrast_Triangle+0x2d) [0xb7a9877d]
3: /usr/lib/xorg/modules/extensions/libGLcore.so [0xb7ad8ae5]
4: /usr/lib/xorg/modules/extensions/libGLcore.so [0xb7af0689]
5: /usr/lib/xorg/modules/extensions/libGLcore.so [0xb7af15ab]
6: /usr/lib/xorg/modules/extensions/libGLcore.so(_tnl_run_pipeline+0x16e) [0xb7adf4b7]
7: /usr/lib/xorg/modules/extensions/libGLcore.so(_tnl_playback_vertex_list+0x4cc) [0xb7ae5c3c]
8: /usr/lib/xorg/modules/extensions/libGLcore.so [0xb7a02872]
9: /usr/lib/xorg/modules/extensions/libGLcore.so(_mesa_CallList+0x47) [0xb7a02d07]
10: /usr/lib/xorg/modules/extensions/libGLcore.so(glCallList+0x23) [0xb79e6eed]
11: /usr/lib/xorg/modules/extensions/libglx.so(__glXDisp_CallList+0x1f) [0xb7bea3f3]
12: /usr/lib/xorg/modules/extensions/libglx.so(__glXRender+0xd0) [0xb7c0273f]
13: /usr/lib/xorg/modules/extensions/libglx.so [0xb7c0548d]
14: /usr/bin/X(Dispatch+0x19e) [0x8085d56]
15: /usr/bin/X(main+0x47c) [0x806e0d8]
16: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xd2) [0xb7d24ea2]
17: /usr/bin/X(FontFileCompleteXLFD+0x85) [0x806d641]

Fatal server error:
Caught signal 11. Server aborting

[Jymmm (jymmmm)]

I have the same problem as described here.

It appears to ocure after letting glxgears run for 40 minutes, then X crashes.

[skunkworks (samco)]

I have also run across exact problem on 6.06LTS.

[jbj (jbj-ubu)]

I have seen this as well on Dapper.

[jbj (jbj-ubu)]

Nevermind, mine was different.

[Timo Aaltonen (tjaalton)]

Closing the bug since it's fixed upstream and the fix is in ubuntu since 7.04. I'm not sure about putting the fix in dapper, though.