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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 --- - [SNB Regression]igt/kms_cursor_crc/cursor-256-sliding causes "[drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt""
href="https://bugs.freedesktop.org/show_bug.cgi?id=82602">82602</a>
</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>[SNB Regression]igt/kms_cursor_crc/cursor-256-sliding causes "[drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt"
</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>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=104607" name="attach_104607" title="dmesg">attachment 104607</a> <a href="attachment.cgi?id=104607&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: Yes.
Only failed on -nihgtly branch. good commit on
-nihgtly(79e44bfa10063ee529140e88fdc401c4ce07d644)
Non-working platforms: SNB
==kernel==
--------------------------
origin/drm-intel-nightly: da31e7c60be217316278a055dd3f91c33913270f(fails)
drm-intel-nightly: 2014y-08m-13d-17h-12m-37s integration manifest
origin/drm-intel-next-queued: 82e3b8c130f046b7dd1e7898c10e40edb52fee6d(works)
drm/i915: Localise the fbdev console lock frobbing
origin/drm-intel-fixes: 7613ec9e6b40b1651d0b8d4af85517ae81110900(works)
drm/i915: Skip load detect when intel_crtc->new_enable==true
origin/drm-fixes: 1b2c4869d8247f9e202fa8a73777c34adc62d409(works)
drm/radeon: fix cut and paste issue for hawaii.
origin/drm-intel-fixes: 7963e9db1b1f842fdc53309baa8714d38e9f5681(works)
Revert "drm: drop redundant drm_file->is_master"
==Bug detailed description==
-----------------------------
igt/kms_cursor_crc/cursor-256-sliding causes
"[drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt"
Output:
[root@x-sgb4 tests]# ./kms_cursor_crc --run-subtest cursor-256-sliding
IGT-Version: 1.7-g5c7bcb1 (i686) (Linux:
3.16.0_drm-intel-nightly_da31e7_20140814+ i686)
Beginning cursor-256-sliding on pipe A, connector VGA-1
................................................
cursor-256-sliding on pipe A, connector VGA-1: PASSED
Beginning cursor-256-sliding on pipe B, connector VGA-1
................................................
cursor-256-sliding on pipe B, connector VGA-1: PASSED
Beginning cursor-256-sliding on pipe A, connector DP-1
................................................
cursor-256-sliding on pipe A, connector DP-1: PASSED
Beginning cursor-256-sliding on pipe B, connector DP-1
..........Test assertion failure function do_single_test, file
kms_cursor_crc.c:123:
Failed assertion: igt_crc_equal(&crc, &ref_crc)
Subtest cursor-256-sliding: FAIL
[root@x-sgb4 tests]# dmesg -r|egrep ""<[1-4]>""|grep drm
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
<3>[ 0.000000] [drm:display_pipe_crc_irq_handler] *ERROR* spurious interrupt
Reproduce steps:
-------------------------
1. ./kms_cursor_crc --run-subtest cursor-256-sliding</pre>
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