From: Ben Greear <greearb@candelatech.com>
Date: Tue, 27 Sep 2011 19:16:08 +0000 (-0400)
Subject: ipv6-multicast: Fix memory leak in input path.
X-Git-Tag: firefly_0821_release~7541^2~1718
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=23b139ecf944b097a0493262cbc04886363bd8e6;p=firefly-linux-kernel-4.4.55.git

ipv6-multicast: Fix memory leak in input path.

[ Upstream commit 2015de5fe2a47086a3260802275932bfd810884e ]

Have to free the skb before returning if we fail
the fib lookup.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 82a809901f8e..450a1ffdfe0b 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -2051,8 +2051,10 @@ int ip6_mr_input(struct sk_buff *skb)
 	int err;
 
 	err = ip6mr_fib_lookup(net, &fl6, &mrt);
-	if (err < 0)
+	if (err < 0) {
+		kfree_skb(skb);
 		return err;
+	}
 
 	read_lock(&mrt_lock);
 	cache = ip6mr_cache_find(mrt,