ipv6-multicast: Fix memory leak in IPv6 multicast.

[ Upstream commit 67928c4041606f02725f3c95c4c0404e4532df1b ]

If reg_vif_xmit cannot find a routing entry, be sure to
free the skb before returning the error.

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 450a1ff..86e3cc1 100644 (file)
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -696,8 +696,10 @@ static netdev_tx_t reg_vif_xmit(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);
        dev->stats.tx_bytes += skb->len;