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<base href="https://bugs.freedesktop.org/">
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - WARNING: CPU: 0 PID: 39 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:7866 sandybridge_pcode_write+0x109/0x1f0 [i915]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97826">97826</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>WARNING: CPU: 0 PID: 39 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:7866 sandybridge_pcode_write+0x109/0x1f0 [i915]
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>XOrg 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>caravena@gmail.com
</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>Open bug: <a href="https://bugzilla.kernel.org/show_bug.cgi?id=156621">https://bugzilla.kernel.org/show_bug.cgi?id=156621</a>
dmesg:
[ 3.763041] ------------[ cut here ]------------
[ 3.763113] WARNING: CPU: 0 PID: 39 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:7866
sandybridge_pcode_write+0x109/0x1f0 [i915]
[ 3.763131] Missing switch case (16) in gen6_check_mailbox_status
[ 3.763133] Modules linked in: sd_mod hid_generic usbhid hid i915 ahci
i2c_algo_bit libahci drm_kms_helper libata crc32c_intel syscopyarea sysfillrect
sysimgblt psmouse fb_sys_fops ehci_pci ehci_hcd xhci_pci drm xhci_hcd scsi_mod
r8169 usbcore mii usb_common fan thermal wmi video fjes button
[ 3.763180] CPU: 0 PID: 39 Comm: kworker/0:1 Not tainted
4.8.0-040800rc6-lowlatency #201609121119
[ 3.763183] Hardware name: SAMSUNG ELECTRONICS CO., LTD.
530U3C/530U4C/SAMSUNG_NP1234567890, BIOS P14AAJ 04/15/2013
[ 3.763233] Workqueue: events intel_gen6_powersave_work [i915]
[ 3.763237] 0000000000000286 00000000e6dc840a ffffffffa39472e2
ffff8a0cd0a1fd58
[ 3.763245] 0000000000000000 ffffffffa36802ce ffff8a0cc8800000
ffff8a0cd0a1fdb0
[ 3.763250] 0000000000000000 ffff8a0cc880a438 ffff8a0cc8808830
ffff8a0cc880a378
[ 3.763257] Call Trace:
[ 3.763267] [<ffffffffa39472e2>] ? dump_stack+0x5c/0x7a
[ 3.763274] [<ffffffffa36802ce>] ? __warn+0xbe/0xe0
[ 3.763280] [<ffffffffa368034f>] ? warn_slowpath_fmt+0x5f/0x80
[ 3.763327] [<ffffffffc067f0d9>] ? sandybridge_pcode_write+0x109/0x1f0
[i915]
[ 3.763372] [<ffffffffc0680ac8>] ? intel_gen6_powersave_work+0x2b8/0x1430
[i915]
[ 3.763378] [<ffffffffa36a6651>] ? finish_task_switch+0x71/0x1e0
[ 3.763382] [<ffffffffa369a30b>] ? process_one_work+0x17b/0x4e0
[ 3.763386] [<ffffffffa369a6ba>] ? worker_thread+0x4a/0x460
[ 3.763391] [<ffffffffa3c23c64>] ? __schedule+0x264/0x740
[ 3.763395] [<ffffffffa369a670>] ? process_one_work+0x4e0/0x4e0
[ 3.763400] [<ffffffffa36a03ad>] ? kthread+0xcd/0xf0
[ 3.763405] [<ffffffffa362d751>] ? __switch_to+0x2c1/0x810
[ 3.763412] [<ffffffffa3c28a1f>] ? ret_from_fork+0x1f/0x40
[ 3.763417] [<ffffffffa36a02e0>] ? kthread_worker_fn+0x160/0x160
[ 3.763421] ---[ end trace 1474e6eee4d0ebf1 ]---</pre>
</div>
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