netdev - [PATCH 3/9] sgiseeq: use free_netdev(netdev) instead of kfree()

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Date:	Sun, 26 Sep 2010 13:58:06 +0400
From:	Vasiliy Kulikov <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>, Julia Lawall <julia@...u.dk>,
	Tejun Heo <tj@...nel.org>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/9] sgiseeq: use free_netdev(netdev) instead of kfree()

Freeing netdev without free_netdev() leads to net, tx leaks.
I might lead to dereferencing freed pointer.

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

@@
struct net_device* dev;
@@

-kfree(dev)
+free_netdev(dev)
---
 drivers/net/sgiseeq.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/net/sgiseeq.c b/drivers/net/sgiseeq.c
index cc4bd8c..9265315 100644
--- a/drivers/net/sgiseeq.c
+++ b/drivers/net/sgiseeq.c
@@ -804,7 +804,7 @@ static int __devinit sgiseeq_probe(struct platform_device *pdev)
 err_out_free_page:
 	free_page((unsigned long) sp->srings);
 err_out_free_dev:
-	kfree(dev);
+	free_netdev(dev);
 
 err_out:
 	return err;
-- 
1.7.0.4

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