[Bug 81202] [BSW]CallTrace "WARNING: CPU: 0 PID: 1237 at drivers/gpu/drm/i915/intel_pm.c:5955 check_power_well_state+0x69/0x6f [i915]()" after boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81202

--- Comment #2 from Guo Jinxian <jinxianx.guo at intel.com> ---
The failure still able to reproduce on latest
-next-queued(eff9b57c1a91ccf309d57500ab6a365ba7be5712)

[root at x-bsw01 tests]# ./kms_pipe_crc_basic
IGT-Version: 1.7-ge48c495 (x86_64) (Linux:
3.16.0-rc4_drm-intel-next-queued_eff9b5_20140728+ x86_64)
Subtest bad-pipe: SUCCESS
Subtest bad-source: SUCCESS
Subtest bad-nb-words-1: SUCCESS
Subtest bad-nb-words-3: SUCCESS
read-crc-pipe-A: Testing connector HDMI-A-3 using pipe A
Subtest read-crc-pipe-A: TIMEOUT
Subtest read-crc-pipe-A-frame-sequence: SKIP
Subtest suspend-read-crc-pipe-A: SKIP
Subtest hang-read-crc-pipe-A: SKIP
Subtest read-crc-pipe-B: SKIP
Subtest read-crc-pipe-B-frame-sequence: SKIP
Subtest suspend-read-crc-pipe-B: SKIP
Subtest hang-read-crc-pipe-B: SKIP
Subtest read-crc-pipe-C: SKIP
Subtest read-crc-pipe-C-frame-sequence: SKIP
Subtest suspend-read-crc-pipe-C: SKIP
Subtest hang-read-crc-pipe-C: SKIP
Test assertion failure function kmstest_force_connector, file igt_kms.c:461:
Failed assertion: debugfs_fd != -1
Last errno: 2, No such file or directory
kms_pipe_crc_basic: igt_core.c:714: igt_fail: Assertion `!test_with_subtests ||
in_fixture' failed.
Aborted (core dumped)
[root at x-bsw01 tests]# dmesg -r|egrep "<[1-4]>"|grep drm
<4>[ 1719.146642]  [<ffffffffa0078dde>] ? drm_mode_getconnector+0xe4/0x2ff
[drm]
<4>[ 1719.146659]  [<ffffffffa0075baa>] ? drm_modeset_unlock_all+0x49/0x58
[drm]
<4>[ 1719.146674]  [<ffffffffa006cf8c>] ? drm_ioctl+0x27a/0x3c0 [drm]
<4>[ 1719.146690]  [<ffffffffa0078cfa>] ? drm_mode_getcrtc+0xb3/0xb3 [drm]
<4>[ 1719.146747] WARNING: CPU: 2 PID: 10782 at
drivers/gpu/drm/i915/intel_pm.c:6280 check_power_well_state+0x69/0x6f [i915]()
<4>[ 1719.146755] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
serio_raw snd_hda_controller pcspkr r8169 snd_hda_codec snd_hwdep snd_pcm
snd_timer snd soundcore battery ac i915 video button drm_kms_helper drm option
usb_wwan usbserial
<4>[ 1719.146798] CPU: 2 PID: 10782 Comm: kms_pipe_crc_ba Tainted: G        W  
  3.16.0-rc4_drm-intel-next-queued_eff9b5_20140728+ #872
<4>[ 1719.146978]  [<ffffffffa00b4dd8>] ?
drm_helper_probe_single_connector_modes_merge_bits+0xbc/0x2c9 [drm_kms_helper]
<4>[ 1719.146994]  [<ffffffffa0078dde>] ? drm_mode_getconnector+0xe4/0x2ff
[drm]
<4>[ 1719.147011]  [<ffffffffa0075baa>] ? drm_modeset_unlock_all+0x49/0x58
[drm]
<4>[ 1719.147026]  [<ffffffffa006cf8c>] ? drm_ioctl+0x27a/0x3c0 [drm]
<4>[ 1719.147042]  [<ffffffffa0078cfa>] ? drm_mode_getcrtc+0xb3/0xb3 [drm]
<4>[ 1719.150405] WARNING: CPU: 2 PID: 10782 at
drivers/gpu/drm/i915/intel_pm.c:6171 vlv_power_well_enabled+0x68/0x91 [i915]()
<4>[ 1719.150408] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel
serio_raw snd_hda_controller pcspkr r8169 snd_hda_codec snd_hwdep snd_pcm
snd_timer snd soundcore battery ac i915 video button drm_kms_helper drm option
usb_wwan usbserial
<4>[ 1719.150453] CPU: 2 PID: 10782 Comm: kms_pipe_crc_ba Tainted: G        W  
  3.16.0-rc4_drm-intel-next-queued_eff9b5_20140728+ #872
<4>[ 1719.150626]  [<ffffffffa00b4dd8>] ?
drm_helper_probe_single_connector_modes_merge_bits+0xbc/0x2c9 [drm_kms_helper]
<4>[ 1719.150643]  [<ffffffffa0078dde>] ? drm_mode_getconnector+0xe4/0x2ff
[drm]
<4>[ 1719.150660]  [<ffffffffa0075baa>] ? drm_modeset_unlock_all+0x49/0x58
[drm]
<4>[ 1719.150674]  [<ffffffffa006cf8c>] ? drm_ioctl+0x27a/0x3c0 [drm]
<4>[ 1719.150691]  [<ffffffffa0078cfa>] ? drm_mode_getcrtc+0xb3/0xb3 [drm]

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