[Bug 86269] New: [SNB]igt/pm_rpm/universal-planes causes system hang and kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4116!

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86269

            Bug ID: 86269
           Summary: [SNB]igt/pm_rpm/universal-planes causes system hang
                    and  kernel BUG at
                    drivers/gpu/drm/i915/i915_gem.c:4116!
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: major
          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

Created attachment 109445
  --> https://bugs.freedesktop.org/attachment.cgi?id=109445&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure, this case has Bug 85634

Non-working platforms:  SNB-HuronRiver

==kernel==
--------------------------
drm-intel-nightly/22ba72f728eaf30e63ded0c0bb0484b4bc6f92d4

==Bug detailed description==
igt/pm_rpm/universal-planes
igt/pm_rpm/universal-planes-dpms
igt/pm_rpm/legacy-planes
igt/pm_rpm/legacy-planes-dpms
Above 4 cases doesn't exit testing and report kernel BUG at
drivers/gpu/drm/i915/i915_gem.c:4116!. 

run ./pm_rpm --run-subtest universal-planes
output:
IGT-Version: 1.8-g6ee3337 (x86_64) (Linux:
3.18.0-rc2_drm-intel-nightly_203b34_20141103+ x86_64)
Runtime PM support: 1
PC8 residency support: 0

dmesg:
[  561.140966] WARNING: CPU: 2 PID: 4343 at
drivers/gpu/drm/i915/i915_gem.c:4144 i915_gem_object_unpin_fence+0x44/0x60
[i915]()
[  561.140970] Modules linked in: netconsole configfs dm_mod snd_hda_codec_hdmi
iTCO_wdt iTCO_vendor_support ppdev snd_hda_codec_idt snd_hda_codec_generic
pcspkr uvcvideo videobuf2_vmalloc videobuf2_memops snd_hda_intel videobuf2_core
v4l2_common snd_hda_controller videodev lpc_ich mfd_core snd_hda_codec
firewire_ohci snd_hwdep firewire_core snd_pcm crc_itu_t snd_timer snd soundcore
wmi battery parport_pc parport tpm_infineon tpm_tis tpm ac acpi_cpufreq i915
button video drm_kms_helper drm cfbfillrect cfbimgblt cfbcopyarea [last
unloaded: netconsole]
[  561.141069] CPU: 2 PID: 4343 Comm: pm_rpm Not tainted
3.18.0-rc2_drm-intel-nightly_203b34_20141103+ #1126
[  561.141072] Hardware name: Hewlett-Packard HP EliteBook 8460p/161C, BIOS
68SCF Ver. F.22 12/22/2011
[  561.141076]  0000000000000000 0000000000000009 ffffffff8178ef42
0000000000000000
[  561.141085]  ffffffff8103a8cc ffff8800b8042a80 ffffffffa009cc1a
ffff0000ffff0000
[  561.141095]  ffff8801334e0000 ffff880002c216c0 ffff8800b81d6060
0000000000000000
[  561.141105] Call Trace:
[  561.141112]  [<ffffffff8178ef42>] ? dump_stack+0x41/0x51
[  561.141117]  [<ffffffff8103a8cc>] ? warn_slowpath_common+0x78/0x90
[  561.141144]  [<ffffffffa009cc1a>] ? i915_gem_object_unpin_fence+0x44/0x60
[i915]
[  561.141154]  [<ffffffffa009cc1a>] ? i915_gem_object_unpin_fence+0x44/0x60
[i915]
[  561.141167]  [<ffffffffa00c8237>] ? intel_unpin_fb_obj+0x28/0x31 [i915]
[  561.141179]  [<ffffffffa00d82e9>] ? intel_disable_plane+0xad/0xff [i915]
[  561.141188]  [<ffffffffa0018c75>] ? __setplane_internal+0x41/0x26f [drm]
[  561.141196]  [<ffffffffa002347b>] ? drm_modeset_lock_all_crtcs+0x27/0x43
[drm]
[  561.141202]  [<ffffffffa002391b>] ? __drm_modeset_lock_all+0xc8/0xf2 [drm]
[  561.141211]  [<ffffffffa001b52a>] ? drm_mode_setplane+0x1aa/0x1ce [drm]
[  561.141219]  [<ffffffffa0010738>] ? drm_ioctl+0x279/0x3bc [drm]
[  561.141224]  [<ffffffff8133eb32>] ? sprintf+0x46/0x4b
[  561.141231]  [<ffffffffa001b380>] ? drm_mode_getplane+0xd0/0xd0 [drm]
[  561.141236]  [<ffffffff813e8ace>] ? rtpm_status_show+0x6a/0x78
[  561.141240]  [<ffffffff813e8a64>] ? control_show+0x37/0x37
[  561.141243]  [<ffffffff813e194b>] ? dev_attr_show+0x17/0x48
[  561.141248]  [<ffffffff8116b156>] ? kernfs_seq_start+0x24/0x7a
[  561.141252]  [<ffffffff8116c355>] ? sysfs_kf_seq_show+0x79/0xc3
[  561.141256]  [<ffffffff8116b128>] ? kernfs_seq_stop+0x10/0x1a
[  561.141261]  [<ffffffff81120cdb>] ? do_vfs_ioctl+0x3ec/0x435
[  561.141265]  [<ffffffff810a14e2>] ? __audit_syscall_entry+0xb2/0xd2
[  561.141269]  [<ffffffff8100d284>] ? syscall_trace_enter_phase1+0x11e/0x127
[  561.141273]  [<ffffffff81120d6d>] ? SyS_ioctl+0x49/0x78
[  561.141277]  [<ffffffff810a170b>] ? __audit_syscall_exit+0x209/0x225
[  561.141281]  [<ffffffff817945d2>] ? system_call_fastpath+0x12/0x17
[  561.141285] ---[ end trace 7b11f843da104d61 ]---
[  561.141300] ------------[ cut here ]------------
[  561.143657] kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4116!

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

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