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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SNB Bisected]igt/gem_reset_stats/close-pending-fork-render causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=74100">74100</a>
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>mika.kuoppala@intel.com
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SNB Bisected]igt/gem_reset_stats/close-pending-fork-render causes system hang
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<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>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=92828" name="attach_92828" title="dmesg">attachment 92828</a> <a href="attachment.cgi?id=92828&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Sandybridge
Kernel(drm-intel-nightly)f27f16540be56813df2ebb8e1106dd5c258f07c3
Bug detailed description:
-------------------------
It causes system hang on sandybridge with -nightly, -queued and -fixes kernel.
Bsiect shows: igt commit c05c88c2b641aaab83608fb2c8e816893690c1fe is the first
bad commit.
commit c05c88c2b641aaab83608fb2c8e816893690c1fe
Author: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
AuthorDate: Tue Jan 21 17:40:08 2014 +0200
Commit: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
CommitDate: Wed Jan 22 09:45:27 2014 +0100
tests/gem_reset_stats: stop only one ring when submitting hang
If we stop all the rings, we can end up blaming the innocent
rings on hangcheck.
Reference: <a class="bz_bug_link
bz_status_ASSIGNED "
title="ASSIGNED --- - [SNB/IVB/HSW/BYT/BDW]igt/gem_reset_stats causes *ERROR* context hanging too fast, declaring banned!"
href="show_bug.cgi?id=73652">https://bugs.freedesktop.org/show_bug.cgi?id=73652</a>
Signed-off-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@intel.com">mika.kuoppala@intel.com</a>>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
output:
IGT-Version: 1.5-gb5109e6 (x86_64) (Linux:
3.13.0-rc8_drm-intel-nightly_f27f16_20140126+ x86_64)
Subtest close-pending-fork-render: SUCCESS
Test requirement not met in function gem_require_ring, file
./../lib/drmtest.h:311:
Last errno: 11, Resource temporarily unavailable
Test requirement: (!(gem_has_vebox(fd)))
Subtest reset-stats-vebox: SKIP
Subtest reset-stats-ctx-vebox: SKIP
Subtest ban-vebox: SKIP
Subtest ban-ctx-vebox: SKIP
Subtest reset-count-vebox: SKIP
Subtest reset-count-ctx-vebox: SKIP
Subtest unrelated-ctx-vebox: SKIP
Subtest close-pending-vebox: SKIP
Subtest close-pending-ctx-vebox: SKIP
Subtest close-pending-fork-vebox: SKIP
Reproduce steps:
-------------------------
1. ./gem_reset_stats --run-subtest close-pending-fork-render</pre>
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