Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

[firefly-linux-kernel-4.4.55.git] / net / ipv6 / mcast.c

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 6d0f5dc8e3a608747bb4347546368fc1342c0f69..92f8e48e4ba4e63606412e317c28d2153eddccb0 100644 (file)
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -211,6 +211,9 @@ int ipv6_sock_mc_drop(struct sock *sk, int ifindex, const struct in6_addr *addr)
        struct ipv6_mc_socklist __rcu **lnk;
        struct net *net = sock_net(sk);
 
+       if (!ipv6_addr_is_multicast(addr))
+               return -EINVAL;
+
        spin_lock(&ipv6_sk_mc_lock);
        for (lnk = &np->ipv6_mc_list;
             (mc_lst = rcu_dereference_protected(*lnk,