Bug 20961 - libdrm_intel segfault on Firefox load
Summary: libdrm_intel segfault on Firefox load
Status: RESOLVED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: libdrm (show other bugs)
Version: DRI git
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
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Reported: 2009-03-30 19:46 UTC by Reilly Grant
Modified: 2010-05-08 06:27 UTC (History)
0 users

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Description Reilly Grant 2009-03-30 19:46:05 UTC
On vanilla linux-2.6.29 with xorg-server 1.5.3 and latest git libdrm and xf86-video-intel I get the following SIGSEGV when loading firefox:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffe1917a6f0 (LWP 8017)]
drm_intel_gem_bo_unreference_locked (bo=0x3db4490) at intel_bufmgr_gem.c:585
585                 DRMLISTADDTAIL(&bo_gem->head, &bucket->head);
(gdb) bt
#0  drm_intel_gem_bo_unreference_locked (bo=0x3db4490)
    at intel_bufmgr_gem.c:585
#1  0x00007ffe15c3439c in drm_intel_gem_bo_unreference (bo=0x3db4490)
    at intel_bufmgr_gem.c:599
#2  0x00007ffe15e87952 in i830_uxa_destroy_pixmap (pixmap=0x3c7a350)
    at i830_exa.c:1011
#3  0x000000000050e0ac in ?? ()
#4  0x00007ffe16b9190f in ?? ()
   from /usr/lib/xorg/modules/extensions//libextmod.so
#5  0x0000000000430ae3 in FreeResource ()
#6  0x0000000000441e03 in ProcFreePixmap ()
#7  0x0000000000445ee9 in Dispatch ()
#8  0x000000000042f095 in main ()

This only happens when KMS is enabled this might be related to bug 20633.

Running a Dell Latitude D630N with lspci reporting:
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
Comment 1 Kristian Høgsberg 2010-05-07 13:12:08 UTC
Did this get fixed?  Can you try a recent version of the stack?  Thanks.
Comment 2 Reilly Grant 2010-05-07 22:12:12 UTC
(In reply to comment #1)
> Did this get fixed?  Can you try a recent version of the stack?  Thanks.

Haha, I forgot about this problem.  I'm currently running xf86-video-intel-2.9.1 on Linux 2.6.32 with KMS and everything seems to be working.
Comment 3 Kristian Høgsberg 2010-05-08 06:27:10 UTC
Thanks for checking back, I'll close the bug.


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