From: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Date: Thu, 28 Jun 2012 02:57:49 +0000 (+0000)
Subject: netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=4009e18851ea555959c6017d848983b3d60bf667;p=openwrt%2Fstaging%2Fblogic.git

netfilter: nfnetlink: fix missing rcu_read_unlock in nfnetlink_rcv_msg

Bug added in commit 6b75e3e8d664a9a (netfilter: nfnetlink: add RCU in
nfnetlink_rcv_msg())

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c
index 3e797d1fcb94..791d56bbd74a 100644
--- a/net/netfilter/nfnetlink.c
+++ b/net/netfilter/nfnetlink.c
@@ -169,8 +169,10 @@ replay:
 
 		err = nla_parse(cda, ss->cb[cb_id].attr_count,
 				attr, attrlen, ss->cb[cb_id].policy);
-		if (err < 0)
+		if (err < 0) {
+			rcu_read_unlock();
 			return err;
+		}
 
 		if (nc->call_rcu) {
 			err = nc->call_rcu(net->nfnl, skb, nlh,