Bug 33203 - firefox4 segfault in swrastPutImage() (pdraw->psc==NULL) [Gallium 0.4 on llvmpipe]
Summary: firefox4 segfault in swrastPutImage() (pdraw->psc==NULL) [Gallium 0.4 on llvm...
Status: RESOLVED FIXED
Alias: None
Product: Mesa
Classification: Unclassified
Component: Mesa core (show other bugs)
Version: 7.10
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: mesa-dev
QA Contact:
URL:
Whiteboard:
Keywords:
: 33204 (view as bug list)
Depends on:
Blocks: 37253
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Reported: 2011-01-17 06:01 UTC by Thierry Vignaud
Modified: 2013-11-15 17:53 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
GDB trace (6.61 KB, text/plain)
2011-01-17 06:01 UTC, Thierry Vignaud 		Details
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Description Thierry Vignaud 2011-01-17 06:01:34 UTC 
Created attachment 42119 [details]
GDB trace

Description of problem:
firefox4 crashes in mesa-7.10 with kernel-2.6.37 with nouveau driver (but in soft rastering code)
Soft rendering was forced by running firefox with another user that has no access to /dev/dri/card0.

Version-Release number of selected component (if applicable):
Tested on Fedora with:
mesa-dri-drivers-7.10-0.18.fc15.x86_64
firefox-4.0-0.17.beta9.fc14.remi.x86_64
kernel-2.6.37-2.fc15.x86_64
This is mesa snapshot from 2011-01-07.

How reproducible:
Always

Steps to Reproduce:
1. Set 'layers.acceleration.force-enabled' to true and 'layers.acceleration.disabled' to false in firefox4 (using about:config)
2. restart firefox
3. firefox prints "failed to create drawable" thenl segfaults in mesa 
  
Actual results:
Segfault

Expected results:
soft rasterizer should not make firefox segfault

Additional info:
See attached GDB trace

# /usr/lib64/mesa/glinfo |egrep 'RENDERER|VENDOR|VERSION'
[a@pt-tvignaud ~]$ /usr/lib64/mesa/glinfo |egrep 'RENDERER|VENDOR|VERSION'
GL_VERSION: 2.1 Mesa 7.10-devel
GL_RENDERER: Gallium 0.4 on llvmpipe
GL_VENDOR: VMware, Inc.
GLU_VERSION: 1.3
GLUT_API_VERSION: 4
Comment 1 Jakob Bornecrantz 2011-01-17 06:18:18 UTC 
Can you try Attacment #40689 [1] in bug 31940 [2].

Cheers Jakob.

[1] https://bugs.freedesktop.org/attachment.cgi?id=40689
[2] https://bugs.freedesktop.org/show_bug.cgi?id=31940
Comment 2 Thierry Vignaud 2011-01-17 09:29:52 UTC 
It didn't helped at all
Comment 3 Karl Tomlinson 2011-06-21 17:50:51 UTC 
It seems this was related to Gecko destroying the GLXContext, GLXPixmap, and underlying Pixmap while the GLXContext was still current.

Gecko now does glXMakeCurrent with drawable set to None and ctx set to NULL to avoid this.

I'm not clear whether or not destroying the underlying drawable while its related context is still current is reasonable, but it seems the appropriate error would be GLXBadCurrentDrawable.  Discussion starts about here:
https://bugzilla.mozilla.org/show_bug.cgi?id=659842#c47
Comment 4 Sven Arvidsson 2011-06-24 10:04:41 UTC 
*** Bug 33204 has been marked as a duplicate of this bug. ***
Comment 5 Thierry Vignaud 2013-11-15 17:53:28 UTC 
I'm closing that one as fixed as I don't have the hardware anymore and there's maybe a fix...

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