FYI, we noticed the below changes on
https://github.com/0day-ci/linux Chris-Wilson/drm-i915-Break-busywaiting-for-requests-on-pending-signals/20151115-213544
commit 8f8c5663fcfcf635678a194d9d19dba496ce87a8 ("drm/i915: Limit the busy wait on requests to 2us not 10ms!")
<6>[ 614.082484] [drm] GPU HANG: ecode 7:1:0x277fffff, in gem_reset_stats [6671], reason: Ring hung, action: reset
<6>[ 614.087816] [drm] Simulated gpu hang, resetting stop_rings
<5>[ 614.090737] drm/i915: Resetting chip after gpu hang
<3>[ 687.113593] [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer elapsed... render ring idle
<6>[ 763.152171] [drm] stuck on render ring
<6>[ 763.155314] [drm] GPU HANG: ecode 7:0:0xe77fffff, in gem_reset_stats [9393], reason: Ring hung, action: reset
<6>[ 763.160212] [drm] Simulated gpu hang, resetting stop_rings
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Ying Huang