udp: udp_get_next() should use spin_unlock_bh()

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/udp.c

@@ -1579,7 +1579,7 @@ static struct sock *udp_get_next(struct seq_file *seq, struct sock *sk)
 	} while (sk && (!net_eq(sock_net(sk), net) || sk->sk_family != state->family));
 
 	if (!sk) {
-		spin_unlock(&state->udp_table->hash[state->bucket].lock);
+		spin_unlock_bh(&state->udp_table->hash[state->bucket].lock);
 		return udp_get_first(seq, state->bucket + 1);
 	}
 	return sk;