<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - [HSW Bisected]igt/drv_suspend and kms_flip causes " WARNING: CPU: 5 PID: 4253 at drivers/gpu/drm/i915/intel_display.c:7305 hsw_enable_pc8+0xeb/0x54d [i915]()" sporadically" href="https://bugs.freedesktop.org/show_bug.cgi?id=80123#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_RESOLVED bz_closed" title="RESOLVED FIXED - [HSW Bisected]igt/drv_suspend and kms_flip causes " WARNING: CPU: 5 PID: 4253 at drivers/gpu/drm/i915/intel_display.c:7305 hsw_enable_pc8+0xeb/0x54d [i915]()" sporadically" href="https://bugs.freedesktop.org/show_bug.cgi?id=80123">bug 80123</a> from <a class="email" href="mailto:jinxianx.guo@intel.com" title="Guo Jinxian <jinxianx.guo@intel.com>"> Guo Jinxian</a> <pre>Created <a href="attachment.cgi?id=101389" name="attach_101389" title="dmesg">attachment 101389</a> <a href="attachment.cgi?id=101389&action=edit" title="dmesg">[details]</a> dmesg This bug still able to reproduce on latest -nightly(00aac34ebc9326666425537316f030cd200365f4) on BDW while running case igt/pm_rpm/system-suspend Dmesg: [ 126.575977] WARNING: CPU: 3 PID: 4435 at drivers/gpu/drm/i915/intel_display.c:7326 hsw_enable_pc8+0x29d/0x54d [i915]() [ 126.575978] IRQs enabled [ 126.575990] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev snd_hda_codec_hdmi pcspkr i2c_i801 snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep lpc_ich mfd_core snd_pcm snd_timer snd soundcore battery parport_pc parport ac acpi_cpufreq i915 video button drm_kms_helper drm [ 126.575993] CPU: 3 PID: 4435 Comm: kworker/u16:6 Tainted: G W 3.16.0-rc1_drm-intel-nightly_00aac3_20140619+ #3698 [ 126.575998] Workqueue: events_unbound async_run_entry_fn [ 126.576000] 0000000000000000 0000000000000009 ffffffff8177f44d ffff880002cafcc8 [ 126.576002] ffffffff8103983c 0000000000000246 ffffffffa00acec3 000000000000020c [ 126.576004] ffff880002f30000 ffff880002c9bb60 ffff880002c9bb68 ffffffffa0064144 [ 126.576004] Call Trace: [ 126.576009] [<ffffffff8177f44d>] ? dump_stack+0x41/0x51 [ 126.576012] [<ffffffff8103983c>] ? warn_slowpath_common+0x78/0x90 [ 126.576023] [<ffffffffa00acec3>] ? hsw_enable_pc8+0x29d/0x54d [i915] [ 126.576031] [<ffffffffa0064144>] ? i915_pm_thaw_early+0x9/0x9 [i915] [ 126.576033] [<ffffffff810398ec>] ? warn_slowpath_fmt+0x45/0x4a [ 126.576043] [<ffffffffa00acec3>] ? hsw_enable_pc8+0x29d/0x54d [i915] [ 126.576050] [<ffffffffa0064178>] ? i915_pm_suspend_late+0x34/0x4d [i915] [ 126.576054] [<ffffffff813df34c>] ? dpm_run_callback+0x57/0xcf [ 126.576057] [<ffffffff813df4f1>] ? __device_suspend_late+0x12d/0x15d [ 126.576060] [<ffffffff8105a7c7>] ? ttwu_do_wakeup+0xf/0xb9 [ 126.576063] [<ffffffff813df537>] ? async_suspend_late+0x16/0x7d [ 126.576065] [<ffffffff8105686b>] ? async_run_entry_fn+0x55/0x10b [ 126.576067] [<ffffffff8104d5f6>] ? process_one_work+0x1e2/0x363 [ 126.576069] [<ffffffff8104ddd6>] ? worker_thread+0x2f2/0x3f1 [ 126.576070] [<ffffffff8104dae4>] ? pool_mayday_timeout+0xf2/0xf2 [ 126.576073] [<ffffffff8105254a>] ? kthread+0xc5/0xcd [ 126.576076] [<ffffffff81052485>] ? kthread_freezable_should_stop+0x40/0x40 [ 126.576078] [<ffffffff81784eec>] ? ret_from_fork+0x7c/0xb0 [ 126.576080] [<ffffffff81052485>] ? 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> </ul> </body> </html>