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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 --- - [IVB Regression]igt/gem_storedw_batches_loop/normal causes [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... blitter ring idle"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71564">71564</a>
</td>
</tr>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[IVB Regression]igt/gem_storedw_batches_loop/normal causes [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... blitter ring idle
</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>
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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>
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<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=89125" name="attach_89125" title="dmesg">attachment 89125</a> <a href="attachment.cgi?id=89125&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Ivybridge
Kernel: (drm-intel-nightly)8e88bd3a304ff70d23c0586be7531e24a56f3931
Bug detailed description:
-------------------------
Run ./gem_storedw_batches_loop --run-subtest normal, It causes <3>[
28.713648] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed...
blitter ring idle.
It happens on ivybridge with -nightly kernel and -queued kernel.
It works well on -fixes kernel and debug kernel.
The latest known good commit:da66146425c3136943452988afd3d64cd551da58
The latest known bad commit: a94b013b91de055572183c6772865123fa955027
output:
running storedw loop with stall every 1 batch
completed 524288 writes successfully
running storedw loop with stall every 2 batch
completed 524288 writes successfully
running storedw loop with stall every 3 batch
completed 524288 writes successfully
running storedw loop with stall every 5 batch
completed 524288 writes successfully
Subtest normal: SUCCESS
Reproduce steps:
-------------------------
1. ./gem_storedw_batches_loop --run-subtest normal</pre>
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