[Bug 96975] New: [BAT BDW] basic-store-each fails, intel_detect_and_clear_missed_interrupts(fd) == 0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96975

            Bug ID: 96975
           Summary: [BAT BDW] basic-store-each fails,
                    intel_detect_and_clear_missed_interrupts(fd) == 0
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: david.s.gordon at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Many examples in CI system, starting from RO_CI_DRM_649 on 2015-07-08, on one
specific machine (ro-bdw-i7-5600u). Failure looks like this:

Stdout  

IGT-Version: 1.15-ge28120d (x86_64) (Linux: 4.7.0-rc6-gfxbench-RO_CI_DRM_649+
x86_64)
vebox completed 28672 cycles: 350.539 us
render completed 23552 cycles: 428.201 us
bsd completed 29696 cycles: 366.052 us
blt completed 24576 cycles: 443.494 us
Stack trace:
  #0 [__igt_fail_assert+0x101]
  #1 [store_ring+0x57b]
  #2 [__real_main692+0x46c]
  #3 [main+0x23]
  #4 [__libc_start_main+0xf0]
  #5 [_start+0x29]
  #6 [<unknown>+0x29]
Subtest basic-store-each: FAIL (10.907s)

Stderr  

(gem_sync:5914) CRITICAL: Test assertion failure function store_ring, file
gem_sync.c:281:
(gem_sync:5914) CRITICAL: Failed assertion:
intel_detect_and_clear_missed_interrupts(fd) == 0
(gem_sync:5914) CRITICAL: error: 6 != 0
Subtest basic-store-each failed.
**** DEBUG ****
(gem_sync:5914) CRITICAL: Test assertion failure function store_ring, file
gem_sync.c:281:
(gem_sync:5914) CRITICAL: Failed assertion:
intel_detect_and_clear_missed_interrupts(fd) == 0
(gem_sync:5914) CRITICAL: error: 6 != 0
****  END  ****

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