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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW]igt/gem_seqno_wrap randomly fails and causes *ERROR* no progress on bsd ring"
href="https://bugs.freedesktop.org/show_bug.cgi?id=68635">68635</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW]igt/gem_seqno_wrap randomly fails and causes *ERROR* no progress on bsd ring
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>
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<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>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=84767" name="attach_84767" title="dmesg">attachment 84767</a> <a href="attachment.cgi?id=84767&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Haswell
Kernel: (drm-intel-fixes)2e6efddd203c15ca5c4700511f717c0e9a3ea31a
Bug detailed description:
-----------------------------
It randomly fail and causes [drm:i915_hangcheck_elapsed] *ERROR* no progress on
bsd ring. It happens 3 in 5 runs with -fixes kernel. It doesn't happen on
-nightly and -queued kernel.
output:
Test assertion failure function random_run_once, file gem_seqno_wrap.c:518:
Failed assertion: write_seqno(val) == 0
Reproduce steps:
----------------------------
1. ./gem_seqno_wrap</pre>
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