[Bug 86680] New: [HSW]igt/gem_reset_stats subcases defer-hangcheck-blt and defer-hangcheck-bsd fail

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86680

            Bug ID: 86680
           Summary: [HSW]igt/gem_reset_stats subcases defer-hangcheck-blt
                    and defer-hangcheck-bsd fail
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: jinxianx.guo at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 109975
  --> https://bugs.freedesktop.org/attachment.cgi?id=109975&action=edit
dmesg

==System Environment==
--------------------------
Regression: No
The tests always fail, only occurs on -fixes branch.

Non-working platforms: HSW

==kernel==
--------------------------
origin/drm-intel-nightly: 18748be7c96accc27327423c384f86a8fae99c35(works)
    drm-intel-nightly: 2014y-11m-20d-21h-58m-44s UTC integration manifest
origin/drm-intel-next-queued: 89a35ecdc6aa5a88165313ca5cfd52b8e8e7fbbd(works)
    drm/i915/g4x: fix g4x infoframe readout
origin/drm-intel-fixes: 0485c9dc24ec0939b42ca5104c0373297506b555(fails)
    drm/i915: Kick fbdev before vgacon

==Bug detailed description==
igt/gem_reset_stats subcases defer-hangcheck-blt and defer-hangcheck-bsd fail

Output:
[root at x-hsw27 tests]# ./gem_reset_stats --run-subtest defer-hangcheck-blt
IGT-Version: 1.8-gd807891 (x86_64) (Linux:
3.18.0-rc5_drm-intel-fixes_cb4975_20141124+ x86_64)
Test assertion failure function defer_hangcheck, file gem_reset_stats.c:1056:
Failed assertion: count_end > count_start
Subtest defer-hangcheck-blt: FAIL (29.004s)
Warning on condition flags != 0 in fucntion check_stop_rings, file
drmtest.c:112
i915_ring_stop flags on exit 0x80000004, can't quiescent gpu cleanly
[root at x-hsw27 tests]# ./gem_reset_stats --run-subtest defer-hangcheck-bsd
IGT-Version: 1.8-gd807891 (x86_64) (Linux:
3.18.0-rc5_drm-intel-fixes_cb4975_20141124+ x86_64)
Test assertion failure function defer_hangcheck, file gem_reset_stats.c:1056:
Failed assertion: count_end > count_start
Subtest defer-hangcheck-bsd: FAIL (29.004s)
Warning on condition flags != 0 in fucntion check_stop_rings, file
drmtest.c:112
i915_ring_stop flags on exit 0x80000002, can't quiescent gpu cleanly


==Reproduce steps==
---------------------------- 
1../gem_reset_stats --run-subtest defer-hangcheck-blt

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