From e8f7f43a4ad451ecfb2689985f99a9e276a08bba Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 4 Sep 2010 00:12:43 +0000 Subject: [PATCH] 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/) // @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) // Signed-off-by: Julia Lawall Acked-by: Wolfram Sang Signed-off-by: David S. Miller --- drivers/net/fs_enet/fs_enet-main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/fs_enet/fs_enet-main.c b/drivers/net/fs_enet/fs_enet-main.c index d6e3111959ab..d684f187de57 100644 --- a/drivers/net/fs_enet/fs_enet-main.c +++ b/drivers/net/fs_enet/fs_enet-main.c @@ -1036,7 +1036,7 @@ static int __devinit fs_enet_probe(struct platform_device *ofdev, ndev = alloc_etherdev(privsize); if (!ndev) { ret = -ENOMEM; - goto out_free_fpi; + goto out_put; } SET_NETDEV_DEV(ndev, &ofdev->dev); @@ -1099,6 +1099,7 @@ out_cleanup_data: out_free_dev: free_netdev(ndev); dev_set_drvdata(&ofdev->dev, NULL); +out_put: of_node_put(fpi->phy_node); out_free_fpi: kfree(fpi); -- 2.20.1