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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [BDW Regression]igt/gem_reset_stats some subcases cause "[drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem.""
href="https://bugs.freedesktop.org/show_bug.cgi?id=81701">81701</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>[BDW Regression]igt/gem_reset_stats some subcases cause "[drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem."
</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>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=103380" name="attach_103380" title="dmesg">attachment 103380</a> <a href="attachment.cgi?id=103380&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes
Good commit on -next-queued: 91565c85b66db820f01894a971d39aaef60c4325
Non-working platforms: BDW
==kernel==
--------------------------
origin/drm-intel-nightly: af1aaba219fdd90ca1b30f9b8d8d19352224f170(fails)
drm-intel-nightly: 2014y-07m-23d-20h-15m-10s integration manifest
origin/drm-intel-next-queued: 2b8ee5710915a244b807fbe3427299d007d19e89(fails)
drm/i915: Allow overlapping userptr objects
origin/drm-intel-fixes: eedd10f45bdcb2a5b2afa35f845e080c3bc984f2(works)
drm/i915: Simplify i915_gem_release_all_mmaps()
==Bug detailed description==
-----------------------------
igt/gem_reset_stats some subcases cause "[drm:hsw_unclaimed_reg_detect] *ERROR*
Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this
problem."
Output:
root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# ./gem_reset_stats
--run-subtest reset-stats-ctx-render
IGT-Version: 1.7-g70e6ed9 (x86_64) (Linux:
3.16.0-rc4_drm-intel-next-queued_2b8ee5_20140724_debug+ x86_64)
Subtest reset-stats-ctx-render: SUCCESS
root@x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r|egrep
"<[1-4]>"|grep drm
<3>[ 169.278194] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
<3>[ 175.277357] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
<3>[ 175.278108] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast,
banning!
<3>[ 181.280352] [drm:hsw_unclaimed_reg_detect] *ERROR* Unclaimed register
detected. Please use the i915.mmio_debug=1 to debug this problem.
<3>[ 181.280605] [drm:i915_context_is_banned] *ERROR* gpu hanging too fast,
banning!
Reproduce steps:
-------------------------
1. ./gem_reset_stats --run-subtest reset-stats-ctx-render</pre>
</div>
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