Bug 100192

Summary:	[ALL][BAT] igt@gem_exec_gttfill@basic causes dmesg warnings
Product:	DRI	Reporter:	Jani Saarinen <jani.saarinen>
Component:	DRM/Intel	Assignee:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Status:	CLOSED FIXED	QA Contact:	Intel GFX Bugs mailing list <intel-gfx-bugs>
Severity:	major
Priority:	medium	CC:	intel-gfx-bugs
Version:	DRI git
Hardware:	All
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Jani Saarinen 2017-03-14 10:39:54 UTC

on CI igt@gem_exec_gttfill@basic test causes dmesg warnings on all systems:
https://intel-gfx-ci.01.org/CI/igt@gem_exec_gttfill@basic.html

Eg SKL:
https://intel-gfx-ci.01.org/CI/CI_DRM_2332/fi-skl-6260u/igt@gem_exec_gttfill@basic.html


on CI_DRM_2332

Suspects: https://intel-gfx-ci.01.org/CI/CI_DRM_2332/commits_short.log

Comment 1 Chris Wilson 2017-03-14 10:41:01 UTC

The commit that introduced it

commit 05df49e73bd7480de8c68ac814e463eb19dc51ed
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Sun Mar 12 21:53:40 2017 +0100

    drm/i915: annote drop_caches debugfs interface with lockdep

is doing its job correctly -- alerting us to the deadlock.

Comment 2 Chris Wilson 2017-03-14 21:09:03 UTC

commit bd784b7cc41af7a19cfb705fa6d800e511c4ab02
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Mar 14 11:50:19 2017 +0000

    drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker)

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