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 82a809901f8e9d3522f562562edf1e0f5e05e74d..450a1ffdfe0b59f7cb01b061bf701d2c4f588b69 100644 (file)
--- 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,