Bug 97826

Summary:	WARNING: CPU: 0 PID: 39 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_pm.c:7866 sandybridge_pcode_write+0x109/0x1f0 [i915]
Product:	DRI	Reporter:	Cristian Aravena <caravena>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	CLOSED DUPLICATE	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	normal
Priority:	medium	CC:	intel-gfx-bugs
Version:	XOrg git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:	SNB	i915 features:	power/Other

Description Cristian Aravena 2016-09-15 20:08:24 UTC

Open bug: https://bugzilla.kernel.org/show_bug.cgi?id=156621



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 ]---

Comment 1 Jani Nikula 2016-09-16 07:49:58 UTC


*** This bug has been marked as a duplicate of bug 97491 ***

Comment 2 Jani Nikula 2016-09-16 07:50:46 UTC

(In reply to Cristian Aravena from comment #0)
> Open bug: https://bugzilla.kernel.org/show_bug.cgi?id=156621

Quoting myself on that bug, "Anyway, this is fixed upstream, so never mind."

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