[Bug 80376] [BDW Regression]igt/kms_flip/vblank-vs-modeset-suspend causes "WARNING: CPU: 2 PID: 1051 at drivers/gpu/drm/i915/i915_irq.c:267 intel_gen6_powersave_work+0xa49/0xf1e [i915]()"

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Jun 24 00:40:01 PDT 2014 

https://bugs.freedesktop.org/show_bug.cgi?id=80376

--- Comment #2 from Guo Jinxian <jinxianx.guo at intel.com> ---
Created attachment 101644
  --> https://bugs.freedesktop.org/attachment.cgi?id=101644&action=edit
dmesg

The similar failure found on SNB

Dmesg shows:
[   38.969312] WARNING: CPU: 1 PID: 3819 at drivers/gpu/drm/i915/i915_irq.c:154
ironlake_disable_vblank+0x38/0x45 [i915]()
[   38.969320] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support ppdev
dcdbas serio_raw pcspkr snd_hda_intel i2c_i801 snd_hda_controller snd_hda_codec
snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd soundcore tpm_tis parport_pc
parport tpm acpi_cpufreq i915 video button drm_kms_helper drm
[   38.969322] CPU: 1 PID: 3819 Comm: kworker/u16:12 Not tainted
3.16.0-rc2_drm-intel-nightly_794975_20140624+ #3850
[   38.969322] Hardware name: Dell Inc. OptiPlex 990/0DXWW6, BIOS A02
02/26/2011
[   38.969325] Workqueue: events_unbound async_run_entry_fn
[   38.969328]  c1a92d70 c16f4ae7 00000000 c10311b0 f81d4e82 00000080 f4f20000
f4f23ac8
[   38.969329]  00000002 c10311d0 00000009 00000000 f81d4e82 00000000 f4ca9000
00000000
[   38.969331]  00000000 f80928ca 00000286 00000286 00000000 00000000 f4ca9000
f4ca90ec
[   38.969331] Call Trace:
[   38.969335]  [<c16f4ae7>] ? dump_stack+0x3e/0x4e
[   38.969337]  [<c10311b0>] ? warn_slowpath_common+0x65/0x78
[   38.969345]  [<f81d4e82>] ? ironlake_disable_vblank+0x38/0x45 [i915]
[   38.969346]  [<c10311d0>] ? warn_slowpath_null+0xd/0x10
[   38.969353]  [<f81d4e82>] ? ironlake_disable_vblank+0x38/0x45 [i915]
[   38.969358]  [<f80928ca>] ? vblank_disable_and_save+0x2b/0x156 [drm]
[   38.969367]  [<f81ea26b>] ? intel_mark_fb_busy.part.34+0x29/0x52 [i915]
[   38.969371]  [<f8092fac>] ? drm_vblank_off+0x27/0x10d [drm]
[   38.969381]  [<f81f20c8>] ? ironlake_crtc_disable+0x30/0x6ef [i915]
[   38.969384]  [<f80a217c>] ? drm_modeset_lock+0x2a/0x78 [drm]
[   38.969390]  [<f81b320a>] ? i915_drm_freeze+0xae/0x12c [i915]
[   38.969392]  [<c12f0ed3>] ? pci_pm_suspend+0x64/0xd3
[   38.969393]  [<c12f0e6f>] ? pci_pm_freeze+0x88/0x88
[   38.969396]  [<c136e102>] ? dpm_run_callback+0x43/0xa8
[   38.969398]  [<c136ec8f>] ? __device_suspend+0x186/0x1e3
[   38.969399]  [<c136ed00>] ? async_suspend+0x14/0x6b
[   38.969400]  [<c1049da4>] ? async_run_entry_fn+0x56/0xfd
[   38.969402]  [<c1041dc7>] ? process_one_work+0x191/0x2ea
[   38.969404]  [<c104fac6>] ? try_to_wake_up+0x1e7/0x1f1
[   38.969405]  [<c10424a1>] ? worker_thread+0x29d/0x384
[   38.969407]  [<c1042204>] ? pool_mayday_timeout+0xb1/0xb1
[   38.969408]  [<c1045dbe>] ? kthread+0xa1/0xa6
[   38.969410]  [<c16f9921>] ? ret_from_kernel_thread+0x21/0x30
[   38.969411]  [<c1045d1d>] ? kthread_freezable_should_stop+0x3b/0x3b
[   38.969412] ---[ end trace bb5e729c616aa520 ]---
[   38.969416] ------------[ cut here ]------------
[   38.969424] WARNING: CPU: 1 PID: 3819 at drivers/gpu/drm/i915/i915_irq.c:423
intel_set_pch_fifo_underrun_reporting+0xc7/0x124 [i915]()
[   38.969431] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic iTCO_wdt iTCO_vendor_support ppdev
dcdbas serio_raw pcspkr snd_hda_intel i2c_i801 snd_hda_controller snd_hda_codec
snd_hwdep snd_pcm lpc_ich mfd_core snd_timer snd soundcore tpm_tis parport_pc
parport tpm acpi_cpufreq i915 video button drm_kms_helper drm
[   38.969432] CPU: 1 PID: 3819 Comm: kworker/u16:12 Tainted: G        W    
3.16.0-rc2_drm-intel-nightly_794975_20140624+ #3850
[   38.969433] Hardware name: Dell Inc. OptiPlex 990/0DXWW6, BIOS A02
02/26/2011
[   38.969434] Workqueue: events_unbound async_run_entry_fn
[   38.969435]  c1a92d70 c16f4ae7 00000000 c10311b0 f81d6835 f4f20000 00000000
00000001
[   38.969437]  f4ca9000 c10311d0 00000009 00000000 f81d6835 00000200 f4f23ac8
00000282
[   38.969439]  f4f20000 f4ca91e4 f582d000 f4ca91e0 f81f2112 f80a217c f582f000
f4ef4880
[   38.969439] Call Trace:
[   38.969440]  [<c16f4ae7>] ? dump_stack+0x3e/0x4e
[   38.969441]  [<c10311b0>] ? warn_slowpath_common+0x65/0x78
[   38.969448]  [<f81d6835>] ? intel_set_pch_fifo_underrun_reporting+0xc7/0x124
[i915]
[   38.969449]  [<c10311d0>] ? warn_slowpath_null+0xd/0x10
[   38.969456]  [<f81d6835>] ? intel_set_pch_fifo_underrun_reporting+0xc7/0x124
[i915]
[   38.969464]  [<f81f2112>] ? ironlake_crtc_disable+0x7a/0x6ef [i915]
[   38.969467]  [<f80a217c>] ? drm_modeset_lock+0x2a/0x78 [drm]
[   38.969473]  [<f81b320a>] ? i915_drm_freeze+0xae/0x12c [i915]
[   38.969474]  [<c12f0ed3>] ? pci_pm_suspend+0x64/0xd3
[   38.969475]  [<c12f0e6f>] ? pci_pm_freeze+0x88/0x88
[   38.969476]  [<c136e102>] ? dpm_run_callback+0x43/0xa8
[   38.969477]  [<c136ec8f>] ? __device_suspend+0x186/0x1e3
[   38.969479]  [<c136ed00>] ? async_suspend+0x14/0x6b
[   38.969480]  [<c1049da4>] ? async_run_entry_fn+0x56/0xfd
[   38.969481]  [<c1041dc7>] ? process_one_work+0x191/0x2ea
[   38.969482]  [<c104fac6>] ? try_to_wake_up+0x1e7/0x1f1
[   38.969484]  [<c10424a1>] ? worker_thread+0x29d/0x384
[   38.969485]  [<c1042204>] ? pool_mayday_timeout+0xb1/0xb1
[   38.969486]  [<c1045dbe>] ? kthread+0xa1/0xa6
[   38.969487]  [<c16f9921>] ? ret_from_kernel_thread+0x21/0x30
[   38.969488]  [<c1045d1d>] ? kthread_freezable_should_stop+0x3b/0x3b
[   38.969489] ---[ end trace bb5e729c616aa521 ]---

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