[Bug 105012] New: [CI] igt at drv_selftest@live_hangcheck - Incompete

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105012

            Bug ID: 105012
           Summary: [CI] igt at drv_selftest@live_hangcheck - Incompete
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: marta.lofstedt at intel.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4228/shard-kbl4/igt@drv_selftest@live_hangcheck.html

runtime i shorter that owatch timeout.

<7>[  181.243477] [IGT] drv_selftest: starting subtest live_hangcheck
...
<7>[  191.339222] [drm:i915_gem_reset_engine [i915]] resetting vecs0 to restart
from tail of request 0x19c4
then stray.

pstore:
https://intel-gfx-ci.01.org/tree/drm-tip/IGT_4228/shard-kbl4/pstore35-1518035023_Oops_1.log

ftrace from:
<0>[  205.496565] drv_self-5966    3.... 204341950us : reset_common_ring: vcs0
seqno=23d2e
...
<0>[  205.505672] ksoftirq-17      1..s. 204390040us :
execlists_submission_tasklet: rcs0 cs-irq head=0 [0], tail=0 [0]
...
backtrace of soft-irq

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