diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2011-04-20 05:57:15 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-04-20 23:37:59 +0400 |
| commit | 10022a6c66e199d8f61d9044543f38785713cbbd (patch) | |
| tree | 8b934ebc8a5a5277a486413c343afc35a55076bd /net/can | |
| parent | 2430af8b7fa37ac0be102c77f9dc6ee669d24ba9 (diff) | |
| download | linux-10022a6c66e199d8f61d9044543f38785713cbbd.tar.xz | |
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>
Diffstat (limited to 'net/can')
| -rw-r--r-- | net/can/raw.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/net/can/raw.c b/net/can/raw.c index 649acfa7c70a..0eb39a7fdf64 100644 --- a/net/can/raw.c +++ b/net/can/raw.c @@ -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); |