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<head>
<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [pnv atomic] GPU hang deadlock"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94211">94211</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[pnv atomic] GPU hang deadlock
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>DRI git
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>chris@chris-wilson.co.uk
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>[ 1200.320145] INFO: task kworker/1:1:25 blocked for more than 120 seconds.
[ 1200.320161] Tainted: G OE 4.5.0-rc4+ #340
[ 1200.320167] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this
message.
[ 1200.320173] kworker/1:1 D f6e4dd10 0 25 2 0x00000000
[ 1200.320195] Workqueue: events i915_hangcheck_elapsed
[ 1200.320201] f6e4dd30 00000046 f6d8e944 f6e4dd10 c1528c6d f624b000 00000001
f5c86380
[ 1200.320213] f6207800 f60fb340 f6dead00 f6e4e000 f6dead00 f6e4ddb8 f6e4dd3c
c1528c6d
[ 1200.320224] f6d8e944 f6e4dd44 c1528ead f6e4dd6c c1529e13 f6d8e94c f6d8e948
f6d8e94c
[ 1200.320235] Call Trace:
[ 1200.320247] [<c1528c6d>] ? schedule+0x2d/0x80
[ 1200.320253] [<c1528c6d>] schedule+0x2d/0x80
[ 1200.320260] [<c1528ead>] schedule_preempt_disabled+0xd/0x10
[ 1200.320266] [<c1529e13>] __ww_mutex_lock_slowpath+0x78/0x125
[ 1200.320273] [<c1529f04>] __ww_mutex_lock+0x44/0x6c
[ 1200.320279] [<c1312a91>] drm_modeset_lock+0x31/0xf0
[ 1200.320284] [<c1312b70>] drm_modeset_lock_all_ctx+0x20/0xc0
[ 1200.320293] [<c12f374f>] drm_atomic_helper_suspend+0x2f/0x90
[ 1200.320301] [<c138df95>] intel_display_suspend+0x15/0x50
[ 1200.320307] [<c1312e52>] ? drm_modeset_lock_all+0x72/0xb0
[ 1200.320313] [<c138e005>] intel_prepare_reset+0x35/0x40
[ 1200.320320] [<c132028d>] i915_handle_error+0x24d/0x710
[ 1200.320328] [<c106bae2>] ? dequeue_entity+0x3a2/0xc90
[ 1200.320356] [<c1062e58>] ? ttwu_do_wakeup+0x18/0x100
[ 1200.320369] [<c1320a44>] i915_hangcheck_elapsed+0x2f4/0x450
[ 1200.320381] [<c10551b4>] process_one_work+0x114/0x370
[ 1200.320390] [<c1055524>] worker_thread+0x114/0x450
[ 1200.320399] [<c1055410>] ? process_one_work+0x370/0x370
[ 1200.320407] [<c1059a3c>] kthread+0x9c/0xb0
[ 1200.320420] [<c152ba09>] ret_from_kernel_thread+0x21/0x38
[ 1200.320428] [<c10599a0>] ? kthread_park+0x50/0x50</pre>
</div>
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