linux-kernel - Re: [PATCH] fbcon: fix race condition between console lock and cursor timer

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Message-ID: <20120821101505.61c0221a@pyramind.ukuu.org.uk>
Date:	Tue, 21 Aug 2012 10:15:05 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Dave Airlie <airlied@...hat.com>
Cc:	linux-fbdev@...r.kernel.org, dri-devel@...ts.sf.net,
	linux-kernel@...r.kernel.org,
	Linus <torvalds@...ux-foundation.org>,
	Randy Dunlap <rdunlap@...otime.net>,
	Josh Boyer <jwboyer@...il.com>
Subject: Re: [PATCH] fbcon: fix race condition between console lock and
 cursor timer

> So after much tracing with direct netconsole writes (printks
> under console_lock not so useful), I think I found the race.

Direct netconsole write would be a useful patch to have mainline I think
8)

> Hopefully this fixes the problem for anyone seeing vesafb->kms
> driver handoff.

Not really the proper fix but its clear and is probably the best thing to
go in initially with a cc: stable. Can you at least stick a large 

+ /* FIXME: we should sort out the unbind locking instead */

on the patch however.
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