diff options
| -rw-r--r-- | net/ipv4/udp.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 549114472db3..cf5ab0581eba 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -970,16 +970,18 @@ int udp_disconnect(struct sock *sk, int flags) void udp_lib_unhash(struct sock *sk) { - struct udp_table *udptable = sk->sk_prot->h.udp_table; - unsigned int hash = udp_hashfn(sock_net(sk), sk->sk_hash); - struct udp_hslot *hslot = &udptable->hash[hash]; + if (sk_hashed(sk)) { + struct udp_table *udptable = sk->sk_prot->h.udp_table; + unsigned int hash = udp_hashfn(sock_net(sk), sk->sk_hash); + struct udp_hslot *hslot = &udptable->hash[hash]; - spin_lock_bh(&hslot->lock); - if (sk_nulls_del_node_init_rcu(sk)) { - inet_sk(sk)->num = 0; - sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); + spin_lock_bh(&hslot->lock); + if (sk_nulls_del_node_init_rcu(sk)) { + inet_sk(sk)->num = 0; + sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); + } + spin_unlock_bh(&hslot->lock); } - spin_unlock_bh(&hslot->lock); } EXPORT_SYMBOL(udp_lib_unhash); |