sock: struct proto hash function may error

[cascardo/linux.git] / net / ipv4 / inet_connection_sock.c

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 9b17c17..12c8d38 100644 (file)
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -734,6 +734,7 @@ int inet_csk_listen_start(struct sock *sk, int backlog)
 {
        struct inet_connection_sock *icsk = inet_csk(sk);
        struct inet_sock *inet = inet_sk(sk);
+       int err = -EADDRINUSE;
 
        reqsk_queue_alloc(&icsk->icsk_accept_queue);
 
@@ -751,13 +752,14 @@ int inet_csk_listen_start(struct sock *sk, int backlog)
                inet->inet_sport = htons(inet->inet_num);
 
                sk_dst_reset(sk);
-               sk->sk_prot->hash(sk);
+               err = sk->sk_prot->hash(sk);
 
-               return 0;
+               if (likely(!err))
+                       return 0;
        }
 
        sk->sk_state = TCP_CLOSE;
-       return -EADDRINUSE;
+       return err;
 }
 EXPORT_SYMBOL_GPL(inet_csk_listen_start);