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Commit c6914a6f authored by Dave Jones's avatar Dave Jones Committed by David S. Miller
Browse files

can: Add missing socket check in can/bcm release. 



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

Signed-off-by: default avatarDave Jones <davej@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0b0dc0f1

net/can/bcm.c

+6 −1
Original line number Diff line number Diff line
@@ -1427,9 +1427,14 @@ static int bcm_init(struct sock *sk) 
static int bcm_release(struct socket *sock)

{

	struct sock *sk = sock->sk;

	struct bcm_sock *bo = bcm_sk(sk);

	struct bcm_sock *bo;

	struct bcm_op *op, *next;



	if (sk == NULL)

		return 0;



	bo = bcm_sk(sk);



	/* remove bcm_ops, timer, rx_unregister(), etc. */



	unregister_netdevice_notifier(&bo->notifier);