From: Julia Lawall <julia@diku.dk>
Date: Sat, 15 May 2010 09:46:12 +0000 (+0200)
Subject: SCSI: aacraid: Eliminate use after free
X-Git-Tag: v2.6.27.49~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4cccc4c16363508973bf6197cabd66291d2a3423;p=pandora-kernel.git

SCSI: aacraid: Eliminate use after free

commit 8a52da632ceb9d8b776494563df579e87b7b586b upstream.

The debugging code using the freed structure is moved before the kfree.

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

// <smpl>
@free@
expression E;
position p;
@@
kfree@p(E)

@@
expression free.E, subE<=free.E, E1;
position free.p;
@@

  kfree@p(E)
  ...
(
  subE = E1
|
* E
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
---

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