[Nouveau] [Bug 33999] 2.6.37 - NV11 crashes X if glxgears started

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=33999

--- Comment #6 from Alex Buell <alex.buell at munted.org.uk> 2011-02-07 18:12:08 PST ---
I managed to get a backtrace:

Program received signal SIGSEGV, Segmentation fault.
0xb72d7821 in nouveau_dri2_create_buffer (pDraw=0x845e918, attachment=1,
format=0) at nouveau_dri2.c:72
72    nouveau_dri2.c: No such file or directory.
    in nouveau_dri2.c
(gdb) bt
#0  0xb72d7821 in nouveau_dri2_create_buffer (pDraw=0x845e918, attachment=1,
format=0) at nouveau_dri2.c:72
#1  0xb7327935 in ?? () from /usr/lib/xorg/modules/extensions/libdri2.so
#2  0xb7329ca0 in ?? () from /usr/lib/xorg/modules/extensions/libdri2.so
#3  0x08071e7f in Dispatch () at dispatch.c:432
#4  0x0806577a in main (argc=6, argv=0xbfbd3824, envp=0xbfbd3840) at main.c:291

The offending line of code that caused the crash is:

    nouveau_bo_handle_get(nouveau_pixmap(ppix)->bo, &nvbuf->base.name);

I'm not sure why it's crashing at this point but my guess is that it's probably
the ->bo that might be the cause. I'd be glad to help track the cause down. I
just need some input on how to proceed.

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