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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Segfault in brw_misc_state"
href="https://bugs.freedesktop.org/show_bug.cgi?id=85077">85077</a>
</td>
</tr>
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<th>Summary</th>
<td>Segfault in brw_misc_state
</td>
</tr>
<tr>
<th>Product</th>
<td>Mesa
</td>
</tr>
<tr>
<th>Version</th>
<td>10.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>Drivers/DRI/i965
</td>
</tr>
<tr>
<th>Assignee</th>
<td>idr@freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>kenny@kennypearce.net
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-3d-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=107907" name="attach_107907" title="Xorg.0.log">attachment 107907</a> <a href="attachment.cgi?id=107907&action=edit" title="Xorg.0.log">[details]</a></span>
Xorg.0.log
On Debian unstable, I get a segfault in the i965 mesa driver. This causes a
large number of applications to fail, including anything that uses the webcam.
The glxgears test program segfaults on startup. The stack trace from the core
file is as follows:
#0 get_stencil_miptree (irb=<optimized out>)
at ../../../../../../../src/mesa/drivers/dri/i965/brw_misc_state.c:225
225 ../../../../../../../src/mesa/drivers/dri/i965/brw_misc_state.c: No such
file or directory.
(gdb) where
#0 get_stencil_miptree (irb=<optimized out>)
at ../../../../../../../src/mesa/drivers/dri/i965/brw_misc_state.c:225
#1 brw_workaround_depthstencil_alignment (brw=0x7fafe0819038,
clear_mask=clear_mask@entry=18)
at ../../../../../../../src/mesa/drivers/dri/i965/brw_misc_state.c:241
#2 0x00007fafdb37e152 in brw_clear (ctx=0x7fafe0819038, mask=18)
at ../../../../../../../src/mesa/drivers/dri/i965/brw_clear.c:235
#3 0x000000000040255e in ?? ()
#4 0x0000000000401d54 in ?? ()
#5 0x00007fafdf2b0b45 in __libc_start_main (main=0x4018d0, argc=1,
argv=0x7fff7a5b2628, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7fff7a5b2618) at libc-start.c:287
#6 0x0000000000402332 in ?? ()
Before crashing, glxgears prints the following:
"Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate." The glxgears window never
appears.
I am on a Dell Inspiron laptop. The crash occurs regardless of whether my VGA
external monitor is attached.
I am on kernel 3.16-2-amd64. I have observed the problem with mesa versions
10.2.8-1, 10.3.0-2, and 10.3.1-1.</pre>
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