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Bluetooth: Do not dereference zero sk 

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Andrei Emeltchenko 2012-02-14 15:12:57 +02:00 committed by Johan Hedberg
parent 46479e6985
commit 7ddb6e0f3f
1 changed files with 3 additions and 1 deletions
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4
net/bluetooth/l2cap_sock.c
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@ -795,7 +795,7 @@ static void l2cap_sock_kill(struct sock *sk)
static int l2cap_sock_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
struct l2cap_chan *chan = l2cap_pi(sk)->chan;
struct l2cap_chan *chan;
int err = 0;
BT_DBG("sock %p, sk %p", sock, sk);
@ -803,6 +803,8 @@ static int l2cap_sock_shutdown(struct socket *sock, int how)
if (!sk)
return 0;
chan = l2cap_pi(sk)->chan;
lock_sock(sk);
if (!sk->sk_shutdown) {
if (chan->mode == L2CAP_MODE_ERTM)