diff --git a/include/net/sock.h b/include/net/sock.h index 38cae35f6e16..751549ac0a84 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1492,6 +1492,7 @@ static inline void lock_sock(struct sock *sk) lock_sock_nested(sk, 0); } +void __release_sock(struct sock *sk); void release_sock(struct sock *sk); /* BH context may only use the following locking interface. */ diff --git a/net/core/sock.c b/net/core/sock.c index 8537b6ca72c5..7e8796a6a089 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -2317,7 +2317,7 @@ static void __lock_sock(struct sock *sk) finish_wait(&sk->sk_lock.wq, &wait); } -static void __release_sock(struct sock *sk) +void __release_sock(struct sock *sk) __releases(&sk->sk_lock.slock) __acquires(&sk->sk_lock.slock) { diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 2827fa5643bd..43ef83b2330e 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2416,16 +2416,10 @@ void tcp_close(struct sock *sk, long timeout) sock_hold(sk); sock_orphan(sk); - /* It is the last release_sock in its life. It will remove backlog. */ - release_sock(sk); - - - /* Now socket is owned by kernel and we acquire BH lock - * to finish close. No need to check for user refs. - */ local_bh_disable(); bh_lock_sock(sk); - WARN_ON(sock_owned_by_user(sk)); + /* remove backlog if any, without releasing ownership. */ + __release_sock(sk); percpu_counter_inc(sk->sk_prot->orphan_count); @@ -2494,6 +2488,7 @@ void tcp_close(struct sock *sk, long timeout) out: bh_unlock_sock(sk); local_bh_enable(); + release_sock(sk); sock_put(sk); } EXPORT_SYMBOL(tcp_close);