[Bug 85361] New: [BSW]igt many cases have WARNING: CPU: 2 PID: 1005 at drivers/gpu/drm/i915/intel_dp.c:1456 intel_dp_probe_oui.part.16+0x12/0xb9 [i915]()

Thu Oct 23 01:40:21 PDT 2014

https://bugs.freedesktop.org/show_bug.cgi?id=85361

            Bug ID: 85361
           Summary: [BSW]igt many cases have WARNING: CPU: 2 PID: 1005 at
                    drivers/gpu/drm/i915/intel_dp.c:1456
                    intel_dp_probe_oui.part.16+0x12/0xb9 [i915]()
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

==System Environment==
--------------------------
Regression: not sure

Non-working platforms: BSW

==kernel==
--------------------------
drm-intel-nightly/77683b77aa4da6e1788838dad2d2a15b0dfc290

==Bug detailed description==
-----------------------------
Run automation testing, many cases have WARNING: CPU: 2 PID: 1005 at
drivers/gpu/drm/i915/intel_dp.c:1456 intel_dp_probe_oui.part.16+0x12/0xb9
[i915]().
I can't reproduce it manually.
It impacts include kms_flip/kms_pipe_crc_basic/kms_plane/kms_render/kms_setmode

test log:
@test: Intel_gpu_tools/igt_kms_flip_wf_vblank
info: @@@Returncode: 0

test case start at: Thu Dec 12 00:04:58 2013
test case end at:   Thu Dec 12 00:05:41 2013

Errors:

Dmesg:
<4>[  335.105960] WARNING: CPU: 2 PID: 1005 at
drivers/gpu/drm/i915/intel_dp.c:1456 intel_dp_probe_oui.part.16+0x12/0xb9
[i915]()
<4>[  335.105968] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek
snd_hda_codec_generic pcspkr serio_raw snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm lpc_ich i2c_i801 mfd_core snd_timer snd
soundcore battery ac acpi_cpufreq option usb_wwan usbserial i915 button video
drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  335.106024] CPU: 2 PID: 1005 Comm: kworker/u8:2 Not tainted
3.18.0-rc1_drm-intel-nightly_1e61c9_20141022+ #742
<4>[  335.278900] WARNING: CPU: 1 PID: 6345 at
drivers/gpu/drm/i915/intel_dp.c:1538 edp_panel_vdd_off.part.9+0x2c/0x4b
[i915]()
<4>[  335.278911]  ip6table_filter ip6_tables ipv6 iptable_filter ip_tables
ebtable_nat ebtables x_tables dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic pcspkr
serio_raw snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm
lpc_ich i2c_i801 mfd_core snd_timer snd soundcore battery ac acpi_cpufreq
option usb_wwan usbserial i915 button video drm_kms_helper drm cfbfillrect
cfbimgblt cfbcopyarea
<4>[  335.278965] CPU: 1 PID: 6345 Comm: kms_flip Tainted: G        W     
3.18.0-rc1_drm-intel-nightly_1e61c9_20141022+ #742
<4>[  335.279232]  [<ffffffffa0057dc4>] ?
drm_helper_probe_single_connector_modes_merge_bits+0xbc/0x31b [drm_kms_helper]
<4>[  335.279251]  [<ffffffffa001af58>] ? drm_mode_getconnector+0xe4/0x2ff
[drm]
<4>[  335.279267]  [<ffffffffa0023894>] ? drm_modeset_unlock_all+0x41/0x50
[drm]
<4>[  335.279283]  [<ffffffffa0010738>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  335.279300]  [<ffffffffa001ae74>] ? drm_mode_getcrtc+0xb3/0xb3 [drm]
<4>[  352.863705] WARNING: CPU: 1 PID: 1005 at
drivers/gpu/drm/i915/intel_dp.c:1456 intel_dp_probe_oui.part.16+0x12/0xb9
[i915]()
<4>[  352.863713] Modules linked in: ip6table_filter ip6_tables ipv6
iptable_filter ip_tables ebtable_nat ebtables x_tables dm_mod
snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek
snd_hda_codec_generic pcspkr serio_raw snd_hda_intel snd_hda_controller
snd_hda_codec snd_hwdep snd_pcm lpc_ich i2c_i801 mfd_core snd_timer snd
soundcore battery ac acpi_cpufreq option usb_wwan usbserial i915 button video
drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
<4>[  352.863770] CPU: 1 PID: 1005 Comm: kworker/u8:2 Tainted: G        W     
3.18.0-rc1_drm-intel-nightly_1e61c9_20141022+ #742
<4>[  353.039760] WARNING: CPU: 2 PID: 6345 at
drivers/gpu/drm/i915/intel_dp.c:1538 edp_panel_vdd_off.part.9+0x2c/0x4b
[i915]()
<4>[  353.039771]  ip6table_filter ip6_tables ipv6 iptable_filter ip_tables
ebtable_nat ebtables x_tables dm_mod snd_hda_codec_hdmi iTCO_wdt
iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic pcspkr
serio_raw snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm
lpc_ich i2c_i801 mfd_core snd_timer snd soundcore battery ac acpi_cpufreq
option usb_wwan usbserial i915 button video drm_kms_helper drm cfbfillrect
cfbimgblt cfbcopyarea
<4>[  353.039825] CPU: 2 PID: 6345 Comm: kms_flip Tainted: G        W     
3.18.0-rc1_drm-intel-nightly_1e61c9_20141022+ #742
<4>[  353.040093]  [<ffffffffa0057dc4>] ?
drm_helper_probe_single_connector_modes_merge_bits+0xbc/0x31b [drm_kms_helper]
<4>[  353.040112]  [<ffffffffa001af58>] ? drm_mode_getconnector+0xe4/0x2ff
[drm]
<4>[  353.040127]  [<ffffffffa0023894>] ? drm_modeset_unlock_all+0x41/0x50
[drm]
<4>[  353.040143]  [<ffffffffa0010738>] ? drm_ioctl+0x279/0x3bc [drm]
<4>[  353.040160]  [<ffffffffa001ae74>] ? drm_mode_getcrtc+0xb3/0xb3 [drm]

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