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| author | Dave Jones <davej@redhat.com> | 2011-04-19 20:36:59 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-04-19 20:36:59 -0700 |
| commit | c6914a6f261aca0c9f715f883a353ae7ff51fe83 (patch) | |
| tree | 05138f623ae01c13dbfeb5e9b38ae1b5e1bdde73 /net/can/bcm.c | |
| parent | 0b0dc0f17f98b59772ca6380c7d5ce4cc593a974 (diff) | |
| download | linux-stable-c6914a6f261aca0c9f715f883a353ae7ff51fe83.tar.gz linux-stable-c6914a6f261aca0c9f715f883a353ae7ff51fe83.tar.bz2 linux-stable-c6914a6f261aca0c9f715f883a353ae7ff51fe83.zip | |
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: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/can/bcm.c')
| -rw-r--r-- | net/can/bcm.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c index 57b1aed79014..8a6a05e7c3c8 100644 --- a/net/can/bcm.c +++ b/net/can/bcm.c @@ -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); |