--- net/can/raw.c

+++ net/can/raw.c

@@ -280,7 +280,12 @@ static int raw_init(struct sock *sk)

static int raw_release(struct socket *sock)

{

struct sock *sk = sock->sk;

- struct raw_sock *ro = raw_sk(sk);

+ struct raw_sock *ro;

+

+ if (!sk)

+ return 0;

+

+ ro = raw_sk(sk);

unregister_netdevice_notifier(&ro->notifier);