From: Julia Lawall <Julia.Lawall@lip6.fr>
Date: Sun, 30 Nov 2014 17:03:44 +0000 (+0100)
Subject: crypto: sha - replace memset by memzero_explicit
X-Git-Tag: omap-for-v3.19/fixes-rc1~99^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a6326ba025a4bc025c8c9a15ea2f307936a93843;p=pandora-kernel.git

crypto: sha - replace memset by memzero_explicit

Memset on a local variable may be removed when it is called just before the
variable goes out of scope.  Using memzero_explicit defeats this
optimization.  A simplified version of the semantic patch that makes this
change is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
type T;
@@

{
... when any
T x[...];
... when any
    when exists
- memset
+ memzero_explicit
  (x,
-0,
  ...)
... when != x
    when strict
}
// </smpl>

This change was suggested by Daniel Borkmann <dborkman@redhat.com>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

Reading git-diff-tree failed