From: Julia Lawall <julia@diku.dk>
Date: Sat, 4 Sep 2010 00:12:43 +0000 (+0000)
Subject: drivers/net/fs_enet/fs_enet-main.c: Add of_node_put to avoid memory leak
X-Git-Tag: v2.6.37-rc1~147^2~543
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8f7f43a4ad451ecfb2689985f99a9e276a08bba;p=pandora-kernel.git

drivers/net/fs_enet/fs_enet-main.c: Add of_node_put to avoid memory leak

In this case, a device_node structure is stored in another structure that
is then freed without first decrementing the reference count of the
device_node structure.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression x;
identifier f;
position p1,p2;
@@

x@p1->f = \(of_find_node_by_path\|of_find_node_by_name\|of_find_node_by_phandle\|of_get_parent\|of_get_next_parent\|of_get_next_child\|of_find_compatible_node\|of_match_node\|of_find_node_by_type\|of_find_node_with_property\|of_find_matching_node\|of_parse_phandle\|of_node_get\)(...);
... when != of_node_put(x)
kfree@p2(x)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@
cocci.print_main("call",p1)
cocci.print_secs("free",p2)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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