linux-kernel - Re: [PATCH 2/2] drm/i915: Skip object locking around a no-op set-domain ioctl

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Message-ID: <878sv31mqk.fsf@depni.sinp.msu.ru>
Date:   Sun, 19 May 2019 00:22:43 +0300
From:   Serge Belyshev <belyshev@...ni.sinp.msu.ru>
To:     Chris Wilson <chris@...is-wilson.co.uk>
Cc:     intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] drm/i915: Skip object locking around a no-op set-domain ioctl

Hi!

This patch causes lockups in firefox. They appear like non-fatal hangs
of the webpage contents, "fixable" with alt-tab or a background system
load.  I have verified that reverting the commit 754a254427 on top of
current Linus tree fixes the problem.