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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 --- - [BYT Regression]igt/gem_concurrent_blit/gtt-gpu-read-after-write-forked causes *ERROR* timed out waiting for Punit"
href="https://bugs.freedesktop.org/show_bug.cgi?id=75244">75244</a>
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</tr>
<tr>
<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>[BYT Regression]igt/gem_concurrent_blit/gtt-gpu-read-after-write-forked causes *ERROR* timed out waiting for Punit
</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>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=94408" name="attach_94408" title="dmesg">attachment 94408</a> <a href="attachment.cgi?id=94408&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Baytrail
Kernel(drm-intel-nightly)1be8f2b4dd6d3db00af24d4891c82d2650bd282d
Bug detailed description:
-------------------------
run ./gem_concurrent_blit --run-subtest gtt-gpu-read-after-write-forked,
reports
<3>[ 570.041279] [drm:vlv_set_rps_idle] *ERROR* timed out waiting for Punit.
It happens on Baytrail with -nightly and -queued kernel.
igt/gem_concurrent_blit/gtt-overwrite-source-forked also has this issue.
The latest known good commit: 87adfb03493141c7c61df06440d07f6c6c9fd24c
The latest known bad commit: 4c0e552882114d1edb588242d45035246ab078a0
output:
IGT-Version: 1.5-g06189c6 (x86_64) (Linux:
3.13.0_drm-intel-next-queued_4c0e55_2
0140219+ x86_64)
using 2x512 buffers, each 1MiB
Subtest gtt-gpu-read-after-write-forked: SUCCESS
# dmesg -r | egrep "<[1-3]>" |grep drm
<3>[ 570.041279] [drm:vlv_set_rps_idle] *ERROR* timed out waiting for Punit
<3>[ 821.361236] [drm:vlv_set_rps_idle] *ERROR* timed out waiting for Punit
Reproduce steps:
-------------------------
1. ./gem_concurrent_blit --run-subtest gtt-gpu-read-after-write-forked</pre>
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