ipv6-multicast: Fix memory leak in IPv6 multicast.

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>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 825d02fa658..def0538e241 100644
--- 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;