From 0ee0d20855ae9271de3f6695f4cafc08ab2533bb Mon Sep 17 00:00:00 2001
From: "Gustavo F. Padovan" <padovan@profusion.mobi>
Date: Sat, 1 May 2010 16:15:41 -0300
Subject: [PATCH] Bluetooth: Fix crash when monitor timeout expires
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The code was crashing due to a invalid access to hci_conn after the
channel disconnect.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
---
 net/bluetooth/l2cap.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 4c7b2d22faa5..2f9bbad42887 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1568,6 +1568,9 @@ static struct sk_buff *l2cap_create_iframe_pdu(struct sock *sk, struct msghdr *m
 
 	BT_DBG("sk %p len %d", sk, (int)len);
 
+	if (!conn)
+		return ERR_PTR(-ENOTCONN);
+
 	if (sdulen)
 		hlen += 2;