[Bug 90237] New: [SKL desktop] "testdisplay -a" causes Call Trace

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90237

            Bug ID: 90237
           Summary: [SKL desktop] "testdisplay -a" causes Call Trace
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: lei.a.liu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115446
  --> https://bugs.freedesktop.org/attachment.cgi?id=115446&action=edit
dmesg

==System Environment==
--------------------------
Regression: No. This is first time test on this machine.
Non-working platforms: SKL

==kernel==
--------------------------
-nightly: 9a4da5ec419897b78c1d4a3949c0c049db5402c5 (fails)
    drm-intel-nightly: 2015y-04m-28d-14h-41m-15s UTC integration manifest
-queued: de4de566f84b87f4d5f8265b11932088adb19896 (fails)
    drm/i915: Update DRIVER_DATE to 20150423
-fixes: a04f90a33fab74789b91fc9739999012f11022d1 (fails)
    drm/i915/chv: Implement WaDisableShadowRegForCpd
==Bug detailed description==
-----------------------------
Dmesg shows:
[  656.766628] ------------[ cut here ]------------
[  656.766644] WARNING: CPU: 4 PID: 5339 at
drivers/gpu/drm/i915/intel_display.c:12008 check_crtc_state+0xb38/0xbc2
[i915]()
[  656.766645] pipe state doesn't match!
[  656.766646] Modules linked in: dm_mod snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_controller
snd_hda_codec snd_hda_core snd_hwdep serio_raw snd_pcm pcspkr snd_timer snd
soundcore i2c_i801 ppdev wmi battery parport_pc parport ac acpi_cpufreq i915
button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea
[  656.766667] CPU: 4 PID: 5339 Comm: testdisplay Tainted: G     U  W      
4.0.0_drm-intel-testing_43d9c2_20150424_+ #183
[  656.766669] Hardware name: Intel Corporation Skylake Client platform/Skylake
Halo DDR4 RVP11, BIOS SKLSE2R1.86C.X075.R04.1503240732 03/24/2015
[  656.766670]  0000000000000009 ffff8804567ab738 ffffffff81859db8
0000000000000000
[  656.766674]  ffff8804567ab788 ffff8804567ab778 ffffffff8104227c
ffff8804567ab780
[  656.766676]  ffffffffa00f06bf ffff88045a8f1000 ffff88045aa2d000
ffff88045aa2d728
[  656.766679] Call Trace:
[  656.766685]  [<ffffffff81859db8>] dump_stack+0x45/0x57
[  656.766688]  [<ffffffff8104227c>] warn_slowpath_common+0xa1/0xbb
[  656.766703]  [<ffffffffa00f06bf>] ? check_crtc_state+0xb38/0xbc2 [i915]
[  656.766706]  [<ffffffff81042339>] warn_slowpath_fmt+0x46/0x48
[  656.766720]  [<ffffffffa00f06bf>] check_crtc_state+0xb38/0xbc2 [i915]
[  656.766737]  [<ffffffffa010030b>] intel_modeset_check_state+0x65c/0xa57
[i915]
[  656.766752]  [<ffffffffa0101188>] intel_crtc_set_config+0x99f/0xc6e [i915]
[  656.766755]  [<ffffffff8108ba1f>] ? vprintk_default+0x1d/0x1f
[  656.766764]  [<ffffffffa00139c4>] ? drm_ut_debug_printk+0x55/0x57 [drm]
[  656.766774]  [<ffffffffa001924c>] drm_mode_set_config_internal+0x5c/0xf7
[drm]
[  656.766784]  [<ffffffffa001d5ec>] drm_mode_setcrtc+0x465/0x50f [drm]
[  656.766791]  [<ffffffffa0010c73>] drm_ioctl+0x285/0x3f1 [drm]
[  656.766800]  [<ffffffffa001d187>] ? drm_mode_setplane+0x19d/0x19d [drm]
[  656.766803]  [<ffffffff8107e361>] ? trace_hardirqs_on+0xd/0xf
[  656.766806]  [<ffffffff81154208>] do_vfs_ioctl+0x47b/0x4c3
[  656.766809]  [<ffffffff81862311>] ? retint_swapgs+0xe/0x44
[  656.766811]  [<ffffffff811542a3>] SyS_ioctl+0x53/0x84
[  656.766814]  [<ffffffff81861732>] system_call_fastpath+0x12/0x17
[  656.766816] ---[ end trace d51b27aa9c815feb ]---
==Reproduce steps==
---------------------------- 
./testdisplay -a

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