netdev - [PATCH 35/64] Bluetooth: Fix crash when monitor timeout expires

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Message-Id: <0ee0d20855ae9271de3f6695f4cafc08ab2533bb.1273484097.git.marcel@holtmann.org>
Date:	Mon, 10 May 2010 11:37:25 +0200
From:	Marcel Holtmann <marcel@...tmann.org>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: [PATCH 35/64] Bluetooth: Fix crash when monitor timeout expires

From: Gustavo F. Padovan <padovan@...fusion.mobi>

The code was crashing due to a invalid access to hci_conn after the
channel disconnect.

Signed-off-by: Gustavo F. Padovan <padovan@...fusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@...fusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
---
 net/bluetooth/l2cap.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 4c7b2d2..2f9bbad 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;
 
-- 
1.6.6.1

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