linux-kernel - [radeon] radeon_kick_out_firmware

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Message-ID: <20110114174940.GA9168@begonia>
Date:	Fri, 14 Jan 2011 18:49:40 +0100
From:	Sylvain 'ythier' Hitier <sylvain.hitier@...il.com>
To:	dri-devel@...ts.freedesktop.org
Cc:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Dave Airlie <airlied@...hat.com>, linux-kernel@...r.kernel.org
Subject: [radeon] radeon_kick_out_firmware_fb() can deref NULL

Hello,

In commit a56f7428d7534f162fbb089c5c79012bf38a7c29 [1], the result of
alloc_apertures() function call is used without checking for a possible NULL
result, which may happen, as seen in [2].

The latest commit [3] in the drm-fixes branch of the
linux/kernel/git/airlied/drm-2.6.git repo still has the issue.

[1] http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=a56f7428d7534f162fbb089c5c79012bf38a7c29
[2] http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;hb=refs/heads/drm-fixes;a=blob;f=include/linux/fb.h#l890
[3] http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commit;h=d15eda5c6edff4987af6f4423af0bab0c3251e74

Regards,
Sylvain "ythier" Hitier

-- 
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