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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>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SNB]igt/gem_suspend/fence-restore-untiled randomly causes call trace and *ERROR* stuck on bsd ring"
href="https://bugs.freedesktop.org/show_bug.cgi?id=68134">68134</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SNB]igt/gem_suspend/fence-restore-untiled randomly causes call trace and *ERROR* stuck on bsd ring
</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>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>huax.lu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</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=84087" name="attach_84087" title="dmesg">attachment 84087</a> <a href="attachment.cgi?id=84087&action=edit" title="dmesg">[details]</a></span>
dmesg
System Environment:
--------------------------
Platform: Sandybridge
Kernel: (drm-intel-fixes)3d51af04567800a87a04785d375f1258977ef6d7
Bug detailed description:
-----------------------------
It randomly causes call trace and [drm:i915_hangcheck_elapsed] *ERROR* stuck on
bsd ring. It happens 1 in 5 runs on sandybridge with -fixes kernel.
I run it 5 cycles on -nightly branch, It works well.
output:
rtcwake: wakeup from "mem" using /dev/rtc0 at Thu Aug 15 06:31:58 2013
checking the first canary object
checking the second canary object
Subtest fence-restore-untiled: SUCCESS
Call Trace:
[ 29.611097] [<ffffffff816ed7b8>] ? dump_stack+0x41/0x51
[ 29.611102] [<ffffffffa01932a6>] ? read_phy_reg+0x71/0x82 [firewire_ohci]
[ 29.611104] [<ffffffffa01954b9>] ? ohci_enable+0x26f/0x535 [firewire_ohci]
[ 29.611106] [<ffffffff812e26dd>] ? pci_pm_restore+0x7b/0x7b
[ 29.611108] [<ffffffffa019580e>] ? pci_resume+0x8f/0x116 [firewire_ohci]
[ 29.611110] [<ffffffff812e26dd>] ? pci_pm_restore+0x7b/0x7b
[ 29.611113] [<ffffffff81368ba3>] ? dpm_run_callback.isra.11+0x24/0x52
[ 29.611114] [<ffffffff813696f3>] ? device_resume+0x109/0x14a
[ 29.611116] [<ffffffff81369748>] ? async_resume+0x14/0x38
[ 29.611117] [<ffffffff8104d3d7>] ? async_run_entry_fn+0x55/0x10b
[ 29.611119] [<ffffffff8104388c>] ? process_one_work+0x1c5/0x2df
[ 29.611120] [<ffffffff81043de3>] ? worker_thread+0x1c7/0x2bc
[ 29.611122] [<ffffffff81043c1c>] ? rescuer_thread+0x251/0x251
[ 29.611124] [<ffffffff810487a2>] ? kthread+0xad/0xb5
[ 29.611126] [<ffffffff810486f5>] ? kthread_freezable_should_stop+0x40/0x40
[ 29.611128] [<ffffffff816f7f2c>] ? ret_from_fork+0x7c/0xb0
[ 29.611130] [<ffffffff810486f5>] ? kthread_freezable_should_stop+0x40/0x40
[ 29.611133] dpm_run_callback(): pci_pm_resume+0x0/0x7b returns -16
[ 29.611134] PM: Device 0000:04:03.0 failed to resume async: error -16
Reproduce steps:
----------------------------
1. ./gem_suspend --run-subtest fence-restore-untiled</pre>
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