[Bug 82751] [PNV/IVB Regression]igt/kms_flip some subcases cause "WARNING: CPU: 1 PID: 5455 at drivers/gpu/drm/i915/i915_drv.c:1487 intel_suspend_complete+0x54a/0x58d [i915]()"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82751

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[PNV                        |[PNV/IVB
                   |Regression]igt/kms_flip     |Regression]igt/kms_flip
                   |some subcases cause         |some subcases cause
                   |"WARNING: CPU: 1 PID: 5455  |"WARNING: CPU: 1 PID: 5455
                   |at                          |at
                   |drivers/gpu/drm/i915/i915_d |drivers/gpu/drm/i915/i915_d
                   |rv.c:1487                   |rv.c:1487
                   |intel_suspend_complete+0x54 |intel_suspend_complete+0x54
                   |a/0x58d [i915]()"           |a/0x58d [i915]()"

--- Comment #2 from Guo Jinxian <jinxianx.guo at intel.com> ---
Test failed on IVB on latest -nightly(186631131a9289dad22f51315d78b9b6ac5b425f)
too.
Case list:
igt/kms_flip/vblank-vs-dpms-suspend
igt/kms_flip/vblank-vs-dpms-suspend-interruptible
igt/kms_flip/vblank-vs-modeset-suspend
igt/kms_flip/vblank-vs-modeset-suspend-interruptible
igt/kms_flip/vblank-vs-suspend
igt/kms_flip/vblank-vs-suspend-interruptible

Output:
[root at x-ivb9 tests]# ./kms_flip --run-subtest
vblank-vs-dpms-suspend-interruptible
IGT-Version: 1.7-g1bec6cb (x86_64) (Linux:
3.16.0_drm-intel-nightly_186631_20140818_debug+ x86_64)
Using monotonic timestamps
Beginning vblank-vs-dpms-suspend-interruptible on crtc 7, connector 18
  1024x768 60 1024 1048 1184 1344 768 771 777 806 0xa 0x40 65000
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Aug 19 15:41:18 2014
.rtcwake: wakeup from "mem" using /dev/rtc0 at Tue Aug 19 15:41:50 2014
Test assertion failure function check_state, file kms_flip.c:557:
Failed assertion: timercmp(&es->last_received_ts, &es->current_ts, <)
Last errno: 4, Interrupted system call
vblank ts before the vblank was issued!
timerdiff -1s, 993551us
Subtest vblank-vs-dpms-suspend-interruptible: FAIL
[root at x-ivb9 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<4>[ 1944.857785] WARNING: CPU: 1 PID: 3945 at
drivers/gpu/drm/i915/i915_drv.c:1487 intel_suspend_complete+0x64c/0x696
[i915]()
<4>[ 1944.857797] Modules linked in: ipv6 dm_mod iTCO_wdt iTCO_vendor_support
snd_hda_codec_hdmi snd_hda_codec_realtek dcdbas snd_hda_codec_generic serio_raw
pcspkr snd_hda_intel i2c_i801 snd_hda_controller snd_hda_codec snd_hwdep
snd_pcm snd_timer snd lpc_ich soundcore mfd_core battery tpm_tis tpm
acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt
cfbcopyarea
<4>[ 1944.857799] CPU: 1 PID: 3945 Comm: kworker/u8:12 Not tainted
3.16.0_drm-intel-nightly_186631_20140818_debug+ #1546
<3>[ 1944.857864] [drm:i915_pm_suspend_late] *ERROR* Suspend complete failed:
-19
<4>[ 1945.488872] WARNING: CPU: 1 PID: 3949 at
drivers/gpu/drm/i915/i915_drv.c:1487 intel_suspend_complete+0x64c/0x696
[i915]()
<4>[ 1945.488885] Modules linked in: ipv6 dm_mod iTCO_wdt iTCO_vendor_support
snd_hda_codec_hdmi snd_hda_codec_realtek dcdbas snd_hda_codec_generic serio_raw
pcspkr snd_hda_intel i2c_i801 snd_hda_controller snd_hda_codec snd_hwdep
snd_pcm snd_timer snd lpc_ich soundcore mfd_core battery tpm_tis tpm
acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt
cfbcopyarea
<4>[ 1945.488887] CPU: 1 PID: 3949 Comm: kworker/u8:16 Tainted: G        W     
3.16.0_drm-intel-nightly_186631_20140818_debug+ #1546
<3>[ 1945.488952] [drm:i915_pm_suspend_late] *ERROR* Suspend complete failed:
-19

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