diff --git a/net/core/sock.c b/net/core/sock.c
index e8551df8330f..1302c1e848b2 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -769,6 +769,7 @@ bool sk_mc_loop(const struct sock *sk)
 {
 	if (dev_recursion_level())
 		return false;
+	sk = sk_const_to_full_sk(sk);
 	if (!sk)
 		return true;
 	/* IPV6_ADDRFORM can change sk->sk_family under us. */