[Bug 74007] New: [BDW]igt/while run twice gem_reset_stats subcase system will hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=74007

          Priority: high
            Bug ID: 74007
                CC: intel-gfx-bugs at lists.freedesktop.org
          Assignee: intel-gfx-bugs at lists.freedesktop.org
           Summary: [BDW]igt/while run twice gem_reset_stats subcase
                    system will hang
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: critical
    Classification: Unclassified
                OS: Linux (All)
          Reporter: huax.lu at intel.com
          Hardware: All
            Status: NEW
           Version: unspecified
         Component: DRM/Intel
           Product: DRI

Created attachment 92707
  --> https://bugs.freedesktop.org/attachment.cgi?id=92707&action=edit
dmesg

System Environment:
--------------------------
Platform: Broadwell
Kernel(drm-intel-nightly)83ac01f486397fd8d319a3e31d1f95beb05037c5

Bug detailed description:
-------------------------
Run one gem_reset_stats subcase then run other gem_reset_stats subcase, or run
one gem_reset_stats subcase twice, system will hang. gem_reset_stats is a new
case.

run ./gem_reset_stats --run-subtest reset-count-vebox twice.
output:
#./gem_reset_stats --run-subtest reset-count-vebox
IGT-Version: 1.5-g1bbb607 (x86_64) (Linux:
3.13.0-rc8_drm-intel-nightly_83ac01_20140123+ x86_64)
Test assertion failure function gem_set_domain, file drmtest.c:535:
Last errno: 5, Input/output error
Failed assertion: drmIoctl((fd), ((((1U) << (((0+8)+8)+14)) | ((('d')) <<
(0+8)) | (((0x40 + 0x1f)) << 0) | ((((sizeof(struct drm_i915_gem_set_domain))))
<< ((0+8)+8)))), (&set_domain)) == 0
Subtest reset-count-vebox: FAIL
# ./gem_reset_stats --run-subtest reset-count-vebox
IGT-Version: 1.5-g1bbb607 (x86_64) (Linux:
3.13.0-rc8_drm-intel-nightly_83ac01_20140123+ x86_64)

Reproduce steps:
-------------------------
1. run ./gem_reset_stats --run-subtest reset-count-vebox twice

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