Bug 111899

Summary: [CI][SHARDS] igt@perf_pmu@enable-race-vcs0 - incomplete - system hang
Product: DRI Reporter: Lakshmi <lakshminarayana.vudum>
Component: DRM/IntelAssignee: Don Hiatt <don.hiatt>
Status: RESOLVED MOVED QA Contact: Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity: critical    
Priority: highest CC: intel-gfx-bugs, jon.ewins
Version: DRI git   
Hardware: Other   
OS: All   
i915 platform: TGL i915 features: Perf/PMU
Bug Depends on: 111880    
Bug Blocks:    

Description Lakshmi 2019-10-03 14:04:42 UTC
<6> [155.847951] Console: switching to colour dummy device 80x25
<6> [155.847995] [IGT] perf_pmu: executing
<6> [155.852148] [IGT] perf_pmu: starting subtest enable-race-vcs0
Comment 1 CI Bug Log 2019-10-03 14:06:08 UTC
The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* TGL: igt@perf_pmu@enable-race-vcs0 - incomplete - system hang
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6989/shard-tglb1/igt@perf_pmu@enable-race-vcs0.html
Comment 2 Don Hiatt 2019-10-17 17:36:28 UTC
test_enable_race() is a perf_pmu subtest ('tests/perf_pmu.c') that is trying to enable the PMU while under heavy (irq) engine load.

Unfortunately the logs only show that the test started and then hangs so it is not obvious where the hang occurs. I might be useful to instrument the test to see if the hang occurs when loading the engine with gem_execbuf() or if it's a result of enabling the PMU under that load.

Setting to CRITICAL as worst case would be that heavy load brings causes a hang.
Comment 3 Martin Peres 2019-11-29 19:37:41 UTC
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