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Bluetooth: fix oops in l2cap_connect_req

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In error cases when the ACL is insecure or we fail to allocate a new
struct sock, we jump to the "response" label.  If so, "sk" will be
null and the kernel crashes.

Signed-off-by: Nathan Holstein <nathan.holstein@gmail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Nathan Holstein 2010-10-15 11:54:02 -04:00 committed by Gustavo F. Padovan
parent cd07202cc8
commit d793fe8caa
1 changed files with 2 additions and 2 deletions
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4
net/bluetooth/l2cap.c
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@ -2891,7 +2891,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
struct l2cap_chan_list *list = &conn->chan_list;
struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
struct l2cap_conn_rsp rsp;
struct sock *parent, *uninitialized_var(sk);
struct sock *parent, *sk = NULL;
int result, status = L2CAP_CS_NO_INFO;
u16 dcid = 0, scid = __le16_to_cpu(req->scid);
@ -3000,7 +3000,7 @@ sendresp:
L2CAP_INFO_REQ, sizeof(info), &info);
}
if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) &&
if (sk && !(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) &&
result == L2CAP_CR_SUCCESS) {
u8 buf[128];
l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;