linux-kernel - 2.6.23-rc4-mm1: deadlock while mmaping video device

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Message-ID: <46E9226F.9010700@gmail.com>
Date:	Thu, 13 Sep 2007 13:43:43 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-mm@...ck.org,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>
Subject: 2.6.23-rc4-mm1: deadlock while mmaping video device

Hi,

I have this circular lock dependency on 2.6.23-rc4-mm1 when opening
/dev/video0 and mmaping it. the v4l driver is stk11xx:
http://www.fi.muni.cz/~xslaby/sklad/panics/mm-deadlock.png

Using slub on x86_64 if that matters.

For now, I'm unable to set up a netconsole, so only the picture linked above
is the best I have.

regards,
-- 
http://www.fi.muni.cz/~xslaby/            Jiri Slaby
faculty of informatics, masaryk university, brno, cz
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