netdev - [PATCH v2] bridge: netfilter: fix a memory leak

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Message-Id: <1282539806-25496-1-git-send-email-xiaosuo@gmail.com>
Date:	Mon, 23 Aug 2010 13:03:26 +0800
From:	Changli Gao <xiaosuo@...il.com>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Stephen Hemminger <shemminger@...ux-foundation.org>,
	bridge@...ts.linux-foundation.org, netdev@...r.kernel.org,
	Changli Gao <xiaosuo@...il.com>
Subject: [PATCH v2] bridge: netfilter: fix a memory leak

nf_bridge_alloc() always reset the skb->nf_bridge, so we should always
put the old one.

Signed-off-by: Changli Gao <xiaosuo@...il.com>
---
v2: Should init tmp->use again because memcpy() overwrite it.
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index 2c911c0..5ed00bd 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -162,8 +162,8 @@ static inline struct nf_bridge_info *nf_bridge_unshare(struct sk_buff *skb)
 		if (tmp) {
 			memcpy(tmp, nf_bridge, sizeof(struct nf_bridge_info));
 			atomic_set(&tmp->use, 1);
-			nf_bridge_put(nf_bridge);
 		}
+		nf_bridge_put(nf_bridge);
 		nf_bridge = tmp;
 	}
 	return nf_bridge;
--
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