From: Jesper Juhl <jj@chaosbits.net>
To: linux-kernel@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org,
Octavian Purdila <octavian.purdila@intel.com>,
Dave Airlie <airlied@redhat.com>,
Greg Kroah-Hartman <gregkh@suse.de>,
Alan Cox <alan@linux.intel.com>, David Airlie <airlied@linux.ie>,
Eric Anholt <eric@anholt.net>,
Jesse Barnes <jesse.barnes@intel.com>
Subject: Re: [PATCH] intel, gma500, lvds: Fix use after free on psb_intel_lvds_init()
Date: Sat, 14 Jan 2012 21:58:49 +0100 (CET) [thread overview]
Message-ID: <alpine.LNX.2.00.1201142156220.11547@swampdragon.chaosbits.net> (raw)
In-Reply-To: <alpine.LNX.2.00.1201142056190.11547@swampdragon.chaosbits.net>
On Sat, 14 Jan 2012, Jesper Juhl wrote:
> In psb_intel_lvds_init(), if we fail to allocate memory for
> 'psb_intel_connector' we free the memory we previously allocated for
> 'psb_intel_encoder', but we then proceed to use that free'd pointer
> when we do 'psb_intel_encoder->dev_priv = lvds_priv;'.
>
> I believe the proper way to handle this is to simply return after the
> allocation for 'psb_intel_connector' has failed. That is what this
> patch does.
>
Ok, so I just noticed that we may also leak 'psb_intel_encoder' if we
'goto failed_connector;'. Might as well fix that as well in the same
patch.
So please just ignore this one. I'll submit a new one in a little
while that handles both leaks.
--
Jesper Juhl <jj@chaosbits.net> http://www.chaosbits.net/
Don't top-post http://www.catb.org/jargon/html/T/top-post.html
Plain text mails only, please.
next prev parent reply other threads:[~2012-01-14 20:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-14 19:59 [PATCH] intel, gma500, lvds: Fix use after free on psb_intel_lvds_init() Jesper Juhl
2012-01-14 20:58 ` Jesper Juhl [this message]
2012-01-14 21:15 ` [PATCH] intel, gma500, lvds: Fix use after free and mem leak in psb_intel_lvds_init() Jesper Juhl
2012-01-17 10:15 ` Patrik Jakobsson
2012-01-17 23:20 ` Jesper Juhl
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