Bug 79104 - [BDW GT3]Call trace appears while boot system
Summary: [BDW GT3]Call trace appears while boot system
Status: CLOSED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: unspecified
Hardware: All Linux (All)
: medium normal
Assignee: Ben Widawsky
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2014-05-23 06:17 UTC by lu hua
Modified: 2017-10-06 14:38 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
dmesg (85.80 KB, text/plain)
2014-05-23 06:17 UTC, lu hua 		no flags Details
Don't double unref on eDP failure. (1.56 KB, patch)
2014-05-29 02:37 UTC, Ben Widawsky 		no flags Details | Splinter Review
dmesg (88.23 KB, text/plain)
2014-05-30 05:30 UTC, lu hua 		no flags Details
View All

Description lu hua 2014-05-23 06:17:35 UTC 
Created attachment 99614 [details]
dmesg

System Environment:
--------------------------
Platform: Broadwell GT3
Kernel:	(drm-intel-nightly) 8490f3fc02d24548830dc2d4272f683781c7c8bd

Bug detailed description:
-------------------------
Clean boot system, call trace appears in dmesg.
It happens on Broadwell GT3, It doesn't happen on GT1,GT2.
Call trace:
[ 3.481340] -----------[ cut here ]-----------
[ 3.481379] WARNING: CPU: 1 PID: 1411 at drivers/gpu/drm/i915/intel_pm.c:5686 intel_display_power_put+0x39/0xf8 [i915]()
[ 3.481384] Modules linked in: i915 video button drm_kms_helper drm
[ 3.481397] CPU: 1 PID: 1411 Comm: udevd Not tainted 3.14.0_drm-intel-nightly_8490f3_20140409+ #1486
[ 3.481403] 0000000000000000 0000000000000009 ffffffff81717233 0000000000000000
[ 3.481410] ffffffff81035052 0000000000000000 ffffffffa006b638 0000000000000002
[ 3.481417] ffff880002c74000 000000000000000b ffff880145409a08 ffff880145b4d000
[ 3.481424] Call Trace:
[ 3.481433] [<ffffffff81717233>] ? dump_stack+0x41/0x51
[ 3.481439] [<ffffffff81035052>] ? warn_slowpath_common+0x73/0x8b
[ 3.481470] [<ffffffffa006b638>] ? intel_display_power_put+0x39/0xf8 [i915]
[ 3.481498] [<ffffffffa006b638>] ? intel_display_power_put+0x39/0xf8 [i915]
[ 3.481543] [<ffffffffa00b6483>] ? intel_dp_init_connector+0x55c/0x63a [i915]
[ 3.481585] [<ffffffffa00b1789>] ? intel_ddi_init+0x18d/0x218 [i915]
[ 3.481626] [<ffffffffa00a404a>] ? intel_modeset_init+0x7ce/0xfa3 [i915]
[ 3.481664] [<ffffffffa0085cec>] ? gen8_irq_postinstall+0x2ff/0x310 [i915]
[ 3.481677] [<ffffffffa0005b92>] ? drm_irq_install+0x170/0x1d6 [drm]
[ 3.481720] [<ffffffffa00c60ca>] ? i915_driver_load+0xb13/0xe12 [i915]
[ 3.481729] [<ffffffff8170f535>] ? klist_add_tail+0x1d/0x40
[ 3.481742] [<ffffffffa00074be>] ? drm_dev_register+0x74/0xe7 [drm]
[ 3.481750] [<ffffffff81325a42>] ? acpi_pci_irq_enable+0x179/0x18c
[ 3.481762] [<ffffffffa00096b9>] ? drm_get_pci_dev+0xfc/0x1b9 [drm]
[ 3.481769] [<ffffffff81385095>] ? __pm_runtime_resume+0x5b/0x6a
[ 3.481776] [<ffffffff812f8e09>] ? local_pci_probe+0x35/0x7a
[ 3.481783] [<ffffffff8137cb44>] ? driver_probe_device+0x1b3/0x1b3
[ 3.481789] [<ffffffff812f90ac>] ? pci_device_probe+0xcc/0xf0
[ 3.481796] [<ffffffff8137ca23>] ? driver_probe_device+0x92/0x1b3
[ 3.481803] [<ffffffff8137cb97>] ? __driver_attach+0x53/0x73
[ 3.481809] [<ffffffff8137b2fe>] ? bus_for_each_dev+0x4e/0x7f
[ 3.481816] [<ffffffff8137c2a5>] ? bus_add_driver+0xe2/0x1c7
[ 3.481822] [<ffffffff8137d0da>] ? driver_register+0x82/0xb5
[ 3.481827] [<ffffffffa00fe000>] ? 0xffffffffa00fdfff
[ 3.481833] [<ffffffff81000296>] ? do_one_initcall+0x78/0xfa
[ 3.481840] [<ffffffff8104e4af>] ? __blocking_notifier_call_chain+0x4f/0x5d
[ 3.481848] [<ffffffff8107fee2>] ? load_module+0x1745/0x1a13
[ 3.481855] [<ffffffff8107db08>] ? mod_kobject_put+0x42/0x42
[ 3.481861] [<ffffffff81080240>] ? SyS_init_module+0x90/0x9b
[ 3.481868] [<ffffffff817218a2>] ? system_call_fastpath+0x16/0x1b
[ 3.481873] --[ end trace bd5e975654bbda1e ]--

Reproduce steps:
---------------------------- 
1. clean boot system
Comment 1 Ben Widawsky 2014-05-29 02:37:14 UTC 
Created attachment 100068 [details] [review]
Don't double unref on eDP failure.

Please test this patch.
Comment 2 lu hua 2014-05-30 05:30:56 UTC 
Created attachment 100140 [details]
dmesg

It doesn't happen on latest -nightly kernel.
Comment 3 Elizabeth 2017-10-06 14:38:04 UTC 
Closing old verified.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.