linux-kernel - Re: Dereferencing freed memory bugs

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Date:	Sat, 28 Mar 2009 18:53:02 +0100
From:	Marcin Slusarz <marcin.slusarz@...il.com>
To:	Dan Carpenter <error27@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>, eteo@...hat.com,
	Tobias Lorenz <tobias.lorenz@....net>,
	Mauro Carvalho Chehab <mchehab@...radead.org>
Subject: Re: Dereferencing freed memory bugs

Dan Carpenter pisze:
> I added a check to smatch (http://repo.or.cz/w/smatch.git/) to check
> for when we dereference
> freed memory.
> 
> (...)
> drivers/media/radio/radio-si470x.c +1144 si470x_fops_release(32) 'radio'
> drivers/media/radio/radio-si470x.c +1722 si470x_usb_driver_disconnect(13) 'radio'
> (...)


Broken by commit ce5829e5fc8204af09db5b226a3dce9824e7d596:
V4L/DVB (7993): si470x: move global lock to device structure
Adding CCs.
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