diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index 83488f2bf7a0e9..f45a806b6c06d2 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -293,12 +293,14 @@ static void gtp_encap_destroy(struct sock *sk) { struct gtp_dev *gtp; - gtp = rcu_dereference_sk_user_data(sk); + lock_sock(sk); + gtp = sk->sk_user_data; if (gtp) { udp_sk(sk)->encap_type = 0; rcu_assign_sk_user_data(sk, NULL); sock_put(sk); } + release_sock(sk); } static void gtp_encap_disable_sock(struct sock *sk) @@ -800,7 +802,8 @@ static struct sock *gtp_encap_enable_socket(int fd, int type, goto out_sock; } - if (rcu_dereference_sk_user_data(sock->sk)) { + lock_sock(sock->sk); + if (sock->sk->sk_user_data) { sk = ERR_PTR(-EBUSY); goto out_sock; } @@ -816,6 +819,7 @@ static struct sock *gtp_encap_enable_socket(int fd, int type, setup_udp_tunnel_sock(sock_net(sock->sk), sock, &tuncfg); out_sock: + release_sock(sock->sk); sockfd_put(sock); return sk; }