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<body><span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] igt@i915_selftest@live_workarounds - dmesg-fail - live_isolated_whitelist failed with error -22, live_dirty_whitelist failed with error -22"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111926">bug 111926</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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</tr>
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<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] igt@i915_selftest@live_workarounds - dmesg-fail - live_isolated_whitelist failed with error -22, live_dirty_whitelist failed with error -22"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111926#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] igt@i915_selftest@live_workarounds - dmesg-fail - live_isolated_whitelist failed with error -22, live_dirty_whitelist failed with error -22"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111926">bug 111926</a>
from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
<pre>Judging by the values, it looks like a use-after-free, so I'm betting on
commit 41f0bc49f7f2014feab8b278fea2adaea6ccaf4e (HEAD -> drm-intel-next-queued,
drm-intel/drm-intel-next-queued)
Author: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Date: Wed Oct 9 07:17:59 2019 +0100
drm/i915/selftests: Hold request reference over waits
Take a reference on the request before submitting it to the HW and then
waiting on it for selftest_workarounds. Once submitted, the request may
be freed by a background worker, unless we take an extra reference for
ourselves.
References: <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - [CI][BAT] igt@i915_selftest@live_workarounds - dmesg-fail - live_isolated_whitelist failed with error -22, live_dirty_whitelist failed with error -22"
href="show_bug.cgi?id=111926">https://bugs.freedesktop.org/show_bug.cgi?id=111926</a>
Signed-off-by: Chris Wilson <<a href="mailto:chris@chris-wilson.co.uk">chris@chris-wilson.co.uk</a>>
Reviewed-by: Mika Kuoppala <<a href="mailto:mika.kuoppala@linux.intel.com">mika.kuoppala@linux.intel.com</a>>
Link:
<a href="https://patchwork.freedesktop.org/patch/msgid/20191009061759.3189-1-chris@chris-wilson.co.uk">https://patchwork.freedesktop.org/patch/msgid/20191009061759.3189-1-chris@chris-wilson.co.uk</a></pre>
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