Bug 111903

Summary:	[CI][BAT] igt@i915_selftest@live_gtt - dmesg-fail- live_cs_tlb failed! Don't panic!
Product:	DRI	Reporter:	Lakshmi <lakshminarayana.vudum>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	RESOLVED MOVED	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	major
Priority:	medium	CC:	intel-gfx-bugs
Version:	DRI git
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:	GLK, SKL	i915 features:	GEM/Other

Description Lakshmi 2019-10-04 06:59:26 UTC

https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6997/fi-glk-dsi/igt@i915_selftest@live_gtt.html
<3> [367.908132] [drm:wa_verify [i915]] *ERROR* engine workaround lost on load! (20e0=1/0, expected 40004000, mask=4000)
<3> [382.183280] i915/i915_gem_gtt_live_selftests: igt_cs_tlb failed with error -5

Comment 1 CI Bug Log 2019-10-04 07:03:02 UTC

The CI Bug Log issue associated to this bug has been updated.

### New filters associated

* GLK: igt@i915_selftest@live_gtt - dmesg-fail- *ERROR* engine workaround lost on load!
  - https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_6997/fi-glk-dsi/igt@i915_selftest@live_gtt.html

Comment 2 Chris Wilson 2019-10-04 07:09:34 UTC

We suspect the display (dmc?) causes the register fubar, and it seems no coincidence that it causes the TLB bug. This is a grave error.

Comment 3 Chris Wilson 2019-10-04 13:19:28 UTC

Note the engine workload is bug 110788.

Comment 4 Francesco Balestrieri 2019-10-10 06:10:38 UTC

Setting severity to major (grave error!), priority medium for now as it happened once in 6 days (in BAT though)

Comment 5 CI Bug Log 2019-10-28 16:08:24 UTC

A CI Bug Log filter associated to this bug has been updated:

{- GLK: igt@i915_selftest@live_gtt - dmesg-fail- *ERROR* engine workaround lost on load! -}
{+ SKL GLK: igt@i915_selftest@live_gtt - dmesg-fail- *ERROR* engine workaround lost on load! +}

New failures caught by the filter:

  * https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7199/fi-skl-6600u/igt@i915_selftest@live_gtt.html

Comment 6 Chris Wilson 2019-10-28 16:22:14 UTC

Note the engine workaround lost again before the TLB snafu.

Comment 7 Martin Peres 2019-11-29 19:37:46 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/intel/issues/481.

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