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<base href="https://bugs.freedesktop.org/" />
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<tr>
<th>Priority</th>
<td>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ILK/SNB/IVB Bisected]igt/gem_concurrent_blit/cpu-gpu-read-after-write segfault"
href="https://bugs.freedesktop.org/show_bug.cgi?id=68299">68299</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>daniel@ffwll.ch
</td>
</tr>
<tr>
<th>Summary</th>
<td>[ILK/SNB/IVB Bisected]igt/gem_concurrent_blit/cpu-gpu-read-after-write segfault
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huax.lu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=84299" name="attach_84299" title="dmesg">attachment 84299</a> <a href="attachment.cgi?id=84299&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Ironlake/Sandybridge/Ivybridge
Kernel: (drm-intel-fixes)2156b612b7589caf39eded17545fa6b77e072f10
Bug detailed description:
-----------------------------
It segfault on Ironlake/Sandybridge/Ivybridge with -nightly,-queued and -fixes
kernel.
Following cases also segfault:
igt/gem_concurrent_blit/cpu-gpu-read-after-write-interruptible
igt/gem_concurrent_blit/gtt-gpu-read-after-write
igt/gem_concurrent_blit/gtt-gpu-read-after-write-interruptible
igt/gem_concurrent_blit/prw-gpu-read-after-write
igt/gem_concurrent_blit/prw-gpu-read-after-write-interruptible
bisect shows:78865847f9fae7e590960f9836f2ec8b611a190e is the first bad commit
commit 78865847f9fae7e590960f9836f2ec8b611a190e
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
AuthorDate: Mon Aug 19 07:23:49 2013 +0200
Commit: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
CommitDate: Mon Aug 19 08:09:25 2013 +0200
lib/drmtest: skip fixtures after an igt_skip
This way we can just enclose all igt_skip/igt_require calls into
fixtures even when we have subtests, and still output correct SKIP
message for all of them. Wohoo, magic!
The only thing which doesn't work yet is enumerating failed subtests,
but I think that should work out on top of this.
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
output:
Segmentation fault (core dumped)
Reproduce steps:
----------------------------
1. ./gem_concurrent_blit --run-subtest cpu-gpu-read-after-write</pre>
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