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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/pm_rpm/debugfs-forcewake-user causes system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81200">81200</a>
</td>
</tr>
<tr>
<th>Keywords</th>
<td>bisect_pending
</td>
</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/pm_rpm/debugfs-forcewake-user causes system hang
</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>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jinxianx.guo@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
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<div>
<pre>==System Environment==
--------------------------
Regression: Yes.
Good commit on -next-queued: 57127efaf1adc5e0bb2d3fa5a01bd97f71af7836
Non-working platforms: BYT
==kernel==
--------------------------
origin/drm-intel-nightly: 16025dad8e9964a5810385f755d43f1c48d6fdcc(fails)
drm-intel-nightly: 2014y-07m-09d-14h-17m-14s integration manifest
origin/drm-intel-next-queued: d101c8fe9bda6578ae72d6021415cfaad2b422f0(fails)
drm/i915: remove i915_rstdby_delays debugfs entry
origin/drm-intel-fixes: 01527b3127997ef6370d5ad4fa25d96847fbf12a(works)
drm/i915/vlv: T12 eDP panel timing enforcement during reboot
==Bug detailed description==
igt/pm_rpm/debugfs-forcewake-user causes system hang.
We can not get dmesg because system hang.
Output:
root@x-byt06:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./pm_rpm
--run-subtest debugfs-forcewake-user
IGT-Version: 1.7-g6b986a2 (x86_64) (Linux:
3.16.0-rc4_drm-intel-nightly_140ef1_20140711+ x86_64)
Runtime PM support: 1
PC8 residency support: 0
==Reproduce steps==
----------------------------
1. ./pm_rpm --run-subtest debugfs-forcewake-user</pre>
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