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

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
...@@ -1427,9 +1427,14 @@ static int bcm_init(struct sock *sk) ...@@ -1427,9 +1427,14 @@ static int bcm_init(struct sock *sk)
static int bcm_release(struct socket *sock) static int bcm_release(struct socket *sock)
{ {
struct sock *sk = sock->sk; struct sock *sk = sock->sk;
struct bcm_sock *bo = bcm_sk(sk); struct bcm_sock *bo;
struct bcm_op *op, *next; struct bcm_op *op, *next;
if (sk == NULL)
return 0;
bo = bcm_sk(sk);
/* remove bcm_ops, timer, rx_unregister(), etc. */ /* remove bcm_ops, timer, rx_unregister(), etc. */
unregister_netdevice_notifier(&bo->notifier); unregister_netdevice_notifier(&bo->notifier);
......
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