From: Julia Lawall <julia@diku.dk>
Date: Sun, 28 Mar 2010 23:39:22 +0000 (+0000)
Subject: powerpc/pmac/windfarm: Correct potential double free
X-Git-Tag: v2.6.35-rc1~450^2~76
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ab30f78c0afbb86584144925e25c7ca68ba9a91f;p=pandora-kernel.git

powerpc/pmac/windfarm: Correct potential double free

The conditionals were testing different values, but then all freeing the
same one, which could result in a double free.

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
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

Reading git-diff-tree failed