[Bug 85634] New: [BYT/BDW/BSW regression]igt/pm_rpm universal-planes doesn't exit testing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=85634

            Bug ID: 85634
           Summary: [BYT/BDW/BSW regression]igt/pm_rpm universal-planes
                    doesn't exit testing
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         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

Created attachment 108672
  --> https://bugs.freedesktop.org/attachment.cgi?id=108672&action=edit
dmesg

==System Environment==
--------------------------
Regression: yes
good commit: 3a9effecae83dcdac4b48972ec24539c6e9e4e7c
bad commit: 421d82916774361a4840018fc3ab3a15751c3ea6

Non-working platforms: BYT/BDW/BSW

==kernel==
--------------------------
drm-intel-nightly/bd21cf795cf5dc278f1451d0f7a597cb1d13c2ba

==Bug detailed description==
Run it more than 30 minutes, it doesn't exit testing.

Following cases also have this issue.
igt/pm_rpm/legacy-planes
igt/pm_rpm/legacy-planes-dpms
igt/pm_rpm/universal-planes
igt/pm_rpm/universal-planes-dpms

output:
IGT-Version: 1.8-g15972aa (x86_64) (Linux:
3.18.0-rc2_drm-intel-nightly_bd21cf_20141030+ x86_64)
Runtime PM support: 1
PC8 residency support: 1

[   82.894312] ------------[ cut here ]------------
[   82.894330] WARNING: CPU: 0 PID: 4689 at
drivers/gpu/drm/i915/i915_gem.c:4144 i915_gem_object_unpin_fence+0x44/0x60
[i915]()
[   82.894331] Modules linked in: dm_mod iTCO_wdt iTCO_vendor_support ppdev
snd_hda_codec_hdmi pcspkr i2c_i801 lpc_ich mfd_core snd_hda_intel
snd_hda_controller snd_hda_codec sn
d_hwdep snd_pcm snd_timer snd soundcore battery parport_pc parport ac
acpi_cpufreq i915 button video drm_kms_helper drm cfbfillrect cfbimgblt
cfbcopyarea
[   82.894348] CPU: 0 PID: 4689 Comm: pm_rpm Not tainted
3.18.0-rc2_drm-intel-nightly_bd21cf_20141030+ #998
[   82.894349]  0000000000000000 0000000000000009 ffffffff8178ef42
0000000000000000
[   82.894352]  ffffffff8103a8cc ffff8801444df240 ffffffffa0095c1a
ffff0000ffff0000
[   82.894355]  ffff880000040000 ffff880002e4dc00 ffff880144bfd860
0000000000000000
[   82.894357] Call Trace:
[   82.894363]  [<ffffffff8178ef42>] ? dump_stack+0x41/0x51
[   82.894367]  [<ffffffff8103a8cc>] ? warn_slowpath_common+0x78/0x90
[   82.894377]  [<ffffffffa0095c1a>] ? i915_gem_object_unpin_fence+0x44/0x60
[i915]
[   82.894386]  [<ffffffffa0095c1a>] ? i915_gem_object_unpin_fence+0x44/0x60
[i915]
[   82.894398]  [<ffffffffa00c1237>] ? intel_unpin_fb_obj+0x28/0x31 [i915]
[   82.894409]  [<ffffffffa00d12e9>] ? intel_disable_plane+0xad/0xff [i915]
[   82.894417]  [<ffffffffa0018c75>] ? __setplane_internal+0x41/0x26f [drm]
[   82.894423]  [<ffffffffa002347b>] ? drm_modeset_lock_all_crtcs+0x27/0x43
[drm]
[   82.894428]  [<ffffffffa002391b>] ? __drm_modeset_lock_all+0xc8/0xf2 [drm]
[   82.894435]  [<ffffffffa001b52a>] ? drm_mode_setplane+0x1aa/0x1ce [drm]
[   82.894442]  [<ffffffffa0010738>] ? drm_ioctl+0x279/0x3bc [drm]
[   82.894445]  [<ffffffff8133eb32>] ? sprintf+0x46/0x4b
[   82.894451]  [<ffffffffa001b380>] ? drm_mode_getplane+0xd0/0xd0 [drm]
[   82.894455]  [<ffffffff813e8ace>] ? rtpm_status_show+0x6a/0x78
[   82.894458]  [<ffffffff813e8a64>] ? control_show+0x37/0x37
[   82.894460]  [<ffffffff813e194b>] ? dev_attr_show+0x17/0x48
[   82.894464]  [<ffffffff8116b156>] ? kernfs_seq_start+0x24/0x7a
[   82.894467]  [<ffffffff8116c355>] ? sysfs_kf_seq_show+0x79/0xc3
[   82.894470]  [<ffffffff8116b128>] ? kernfs_seq_stop+0x10/0x1a
[   82.894474]  [<ffffffff81120cdb>] ? do_vfs_ioctl+0x3ec/0x435
[   82.894477]  [<ffffffff81112f97>] ? vfs_read+0x101/0x13f
[   82.894479]  [<ffffffff81120d6d>] ? SyS_ioctl+0x49/0x78
[   82.894483]  [<ffffffff817945d2>] ? system_call_fastpath+0x12/0x17
[   82.894484] ---[ end trace fffcab6ee7a3fbd7 ]---
[   82.894494] ------------[ cut here ]------------
[   82.894527] kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4116!


==Reproduce steps==
---------------------------- 
1. ./pm_rpm --run-subtest universal-planes

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