From: Julia Lawall <julia@diku.dk>
Date: Tue, 22 Dec 2009 20:30:59 +0000 (+0100)
Subject: drivers/dma: Correct use after free
X-Git-Tag: v2.6.33-rc3~33^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0794ec8ce327ec74416b569b8fb1951274693700;p=pandora-kernel.git

drivers/dma: Correct use after free

Move the kfree after the iounmap that refers to the same structure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression x,e;
identifier f;
iterator I;
statement S;
@@

*kfree(x);
... when != &x
    when != x = e
    when != I(x,...) S
*x->f
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---

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