Commit 10022a6c authored Apr 20, 2011 by Oliver Hartkopp Committed by David S. Miller Apr 20, 2011

can: add missing socket check in can/raw release



v2: added space after 'if' according code style.

We can get here with a NULL socket argument passed from userspace,
so we need to handle it accordingly.

Thanks to Dave Jones pointing at this issue in net/can/bcm.c

Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 2430af8b

net/can/raw.c

+6 −1

Original line number	Diff line number	Diff line
		@@ -305,7 +305,12 @@ 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);