[Bug 83047] New: [BDW Regression]igt/gem_reset_stats unable to exit

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83047

          Priority: medium
            Bug ID: 83047
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW Regression]igt/gem_reset_stats unable to exit
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: jinxianx.guo at intel.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 105224
  --> https://bugs.freedesktop.org/attachment.cgi?id=105224&action=edit
dmesg

==System Environment==
--------------------------
Regression: Yes. 
Results of nightly test(14/8) were passed.
But I cannot find good commit on both kernel and IGT

Non-working platforms: BDW

==kernel==
--------------------------
origin/drm-intel-nightly: 257d90d13794c2eb545ab0d6c708f21e2a0378b6(fails)
    drm-intel-nightly: 2014y-08m-21d-10h-03m-09s integration manifest
origin/drm-intel-next-queued: 3a5f87c286515c54ff5c52c3e64d0c522b7570c0(fails)
    drm: fix plane rotation when restoring fbdev configuration
origin/drm-intel-fixes: 1a125d8a2c22b11741fc47d4ffcf7a5ffa044dd3(fails)
    drm/i915: don't try to retrain a DP link on an inactive CRTC

==Bug detailed description==
igt/gem_reset_stats unable to exit


Case list:
igt/gem_reset_stats/close-pending-blt
igt/gem_reset_stats/close-pending-ctx-render
igt/gem_reset_stats/close-pending-fork-reverse-vebox
igt/gem_reset_stats/close-pending-render
igt/gem_reset_stats/close-pending-vebox
igt/gem_reset_stats/reset-count-ctx-render


Output:
root at x-bdw05:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# time
./gem_reset_stats --run-subtest close-pending-ctx-render
IGT-Version: 1.7-g50166d2 (x86_64) (Linux:
3.17.0-rc1_drm-intel-nightly_257d90_20140825+ x86_64)

^C
^Z
[1]+  Stopped                 ./gem_reset_stats --run-subtest
close-pending-ctx-render

real    23m20.149s
user    0m0.000s
sys     0m0.000s


==Reproduce steps==
---------------------------- 
1. ./gem_reset_stats --run-subtest close-pending-ctx-render

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