[Bug 87730] New: [BSW]igt/gem_dummy_reloc_loop sporadically causes *ERROR* Hangcheck timer elapsed... blitter ring idle

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Dec 25 19:39:50 PST 2014


https://bugs.freedesktop.org/show_bug.cgi?id=87730

            Bug ID: 87730
           Summary: [BSW]igt/gem_dummy_reloc_loop sporadically causes
                    *ERROR* Hangcheck timer elapsed... blitter ring idle
           Product: DRI
           Version: unspecified
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: huax.lu at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 111350
  --> https://bugs.freedesktop.org/attachment.cgi?id=111350&action=edit
dmesg

==System Environment==
--------------------------
Regression: not sure

on-working platforms: BSW

==kernel==
--------------------------
drm-intel-next-queued/140fd38dc4962ae3694f81900b51c567df1b6d33

==Bug detailed description==
-----------------------------
It sporadically causes <3>[  119.754886] [drm:i915_hangcheck_elapsed [i915]]
*ERROR* Hangcheck timer elapsed... blitter ring idle. Fail rate: 3/5.

output:
IGT-Version: 1.9-geb799b2 (x86_64) (Linux:
3.18.0-rc7_drm-intel-next-queued_140fd3_20141226+ x86_64)
running dummy loop on blt
dummy loop run on blt completed
Subtest blt: SUCCESS (50.930s)

==Reproduce steps==
---------------------------- 
1. ./gem_dummy_reloc_loop --run-subtest blt

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