diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c index b770335c03c185..5615cdb7202caf 100644 --- a/drivers/net/gtp.c +++ b/drivers/net/gtp.c @@ -285,13 +285,17 @@ static int gtp1u_udp_encap_recv(struct gtp_dev *gtp, struct sk_buff *skb) return gtp_rx(pctx, skb, hdrlen, gtp->role); } -static void gtp_encap_destroy(struct sock *sk) +static void __gtp_encap_destroy(struct sock *sk) { struct gtp_dev *gtp; lock_sock(sk); gtp = sk->sk_user_data; if (gtp) { + if (gtp->sk0 == sk) + gtp->sk0 = NULL; + else + gtp->sk1u = NULL; udp_sk(sk)->encap_type = 0; rcu_assign_sk_user_data(sk, NULL); sock_put(sk); @@ -299,12 +303,19 @@ static void gtp_encap_destroy(struct sock *sk) release_sock(sk); } +static void gtp_encap_destroy(struct sock *sk) +{ + rtnl_lock(); + __gtp_encap_destroy(sk); + rtnl_unlock(); +} + static void gtp_encap_disable_sock(struct sock *sk) { if (!sk) return; - gtp_encap_destroy(sk); + __gtp_encap_destroy(sk); } static void gtp_encap_disable(struct gtp_dev *gtp) @@ -1043,6 +1054,7 @@ static int gtp_genl_new_pdp(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } + rtnl_lock(); rcu_read_lock(); gtp = gtp_find_dev(sock_net(skb->sk), info->attrs); @@ -1067,6 +1079,7 @@ static int gtp_genl_new_pdp(struct sk_buff *skb, struct genl_info *info) out_unlock: rcu_read_unlock(); + rtnl_unlock(); return err; }