<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - [HSW Regression]igt/kms_flip causes "WARNING: CPU: 5 PID: 4368 at drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]()" sporadically" href="https://bugs.freedesktop.org/show_bug.cgi?id=80122#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - [HSW Regression]igt/kms_flip causes "WARNING: CPU: 5 PID: 4368 at drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]()" sporadically" href="https://bugs.freedesktop.org/show_bug.cgi?id=80122">bug 80122</a> from <a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> Guo Jinxian</a> <pre>DMESG shows: [ 100.529130] WARNING: CPU: 5 PID: 4368 at drivers/gpu/drm/i915/intel_pm.c:6174 check_power_well_state+0x69/0x6f [i915]() [ 100.529131] state mismatch for 'display' (always_on 0 hw state 0 use-count 3 disable_power_well 1 [ 100.529138] Modules linked in: dm_mod snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support pcspkr serio_raw i2c_i801 firewire_ohci lpc_ich mfd_core snd_hda_intel snd_hda_controller firewire_core crc_itu_t snd_hda_codec snd_hwdep snd_pcm snd_timer snd soundcore battery wmi acpi_cpufreq i915 video button drm_kms_helper drm [ 100.529140] CPU: 5 PID: 4368 Comm: kworker/u16:148 Tainted: G W 3.15.0-rc8_drm-intel-nightly_e9ce9f_20140617+ #3634 [ 100.529140] Hardware name: /DZ87KLT75K, BIOS KLZ8711D.86A.0336.2013.0516.1957 05/16/2013 [ 100.529143] Workqueue: events_unbound async_run_entry_fn [ 100.529144] 0000000000000000 0000000000000009 ffffffff81772bca ffff880255dafc68 [ 100.529145] ffffffff81036e54 0000000000000286 ffffffffa0069e8b ffff88025661c000 [ 100.529146] ffffffffa00fe338 ffffffffa00fe338 0000000000000001 0000000000800000 [ 100.529147] Call Trace: [ 100.529150] [<ffffffff81772bca>] ? dump_stack+0x41/0x51 [ 100.529153] [<ffffffff81036e54>] ? warn_slowpath_common+0x78/0x90 [ 100.529156] [<ffffffffa0069e8b>] ? check_power_well_state+0x69/0x6f [i915] [ 100.529158] [<ffffffff81036f04>] ? warn_slowpath_fmt+0x45/0x4a [ 100.529162] [<ffffffffa0069e8b>] ? check_power_well_state+0x69/0x6f [i915] [ 100.529166] [<ffffffffa006df31>] ? intel_display_power_get+0x82/0xb9 [i915] [ 100.529173] [<ffffffffa00aad1c>] ? intel_display_set_init_power+0x22/0x34 [i915] [ 100.529177] [<ffffffffa006ddff>] ? intel_power_domains_init_hw+0x21/0x6b [i915] [ 100.529180] [<ffffffffa0064607>] ? i915_resume_early+0x3d/0x3d [i915] [ 100.529183] [<ffffffffa0064135>] ? i915_drm_thaw_early+0x40/0x46 [i915] [ 100.529186] [<ffffffff813d129b>] ? dpm_run_callback+0x30/0x6b [ 100.529187] [<ffffffff813d1950>] ? device_resume_early+0x130/0x172 [ 100.529189] [<ffffffff813d1b78>] ? async_resume_early+0x14/0x38 [ 100.529189] [<ffffffff81053d9f>] ? async_run_entry_fn+0x55/0x10b [ 100.529192] [<ffffffff8104aade>] ? process_one_work+0x1e2/0x363 [ 100.529193] [<ffffffff8104b385>] ? worker_thread+0x1c7/0x2bc [ 100.529194] [<ffffffff8104b1be>] ? manage_workers.isra.23+0x1b5/0x1b5 [ 100.529196] [<ffffffff8104fb32>] ? kthread+0xc5/0xcd [ 100.529197] [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40 [ 100.529199] [<ffffffff8177e9bc>] ? ret_from_fork+0x7c/0xb0 [ 100.529200] [<ffffffff8104fa6d>] ? kthread_freezable_should_stop+0x40/0x40</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>