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authorOliver Hartkopp <socketcan@hartkopp.net>2011-04-19 21:57:15 -0400
committerDavid S. Miller <davem@davemloft.net>2011-04-20 15:37:59 -0400
commit10022a6c66e199d8f61d9044543f38785713cbbd (patch)
tree8b934ebc8a5a5277a486413c343afc35a55076bd
parent2430af8b7fa37ac0be102c77f9dc6ee669d24ba9 (diff)
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>
-rw-r--r--net/can/raw.c7
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)
305static int raw_release(struct socket *sock) 305static int raw_release(struct socket *sock)
306{ 306{
307 struct sock *sk = sock->sk; 307 struct sock *sk = sock->sk;
308 struct raw_sock *ro = raw_sk(sk); 308 struct raw_sock *ro;
309
310 if (!sk)
311 return 0;
312
313 ro = raw_sk(sk);
309 314
310 unregister_netdevice_notifier(&ro->notifier); 315 unregister_netdevice_notifier(&ro->notifier);
311 316