[Bug 77302] New: [ILK SNB IVB HSW BYT BDW]System random hung while run some subcases of gem_reset_stats

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77302

          Priority: medium
            Bug ID: 77302
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [ILK SNB IVB HSW BYT BDW]System random hung while run
                    some subcases of gem_reset_stats
        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 97210
  --> https://bugs.freedesktop.org/attachment.cgi?id=97210&action=edit
System random hung

System Environment:
--------------------------
Platform: ILK SNB IVB HSW BYT BDW
kernel:   (drm-intel-nightly)35dc7c8af75a3e5ae52a5469786602ce083a6368

Bug detailed description:
----------------------------
System random hung while run some subcases of gem_reset_stats, like
close-pending-fork-render, ban-vebox etc.

The hung rate about 1 out of 6.

Reproduce steps:
---------------------------- 
1.  ./kms_flip --run-subtest close-pending-fork-render

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