From: Gustavo F. Padovan Date: Wed, 12 May 2010 01:14:00 +0000 (-0300) Subject: Bluetooth: Only check SAR bits if frame is an I-frame X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bc1b1f8bee63966649dd5ac7d10d31a6556bf19b;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git Bluetooth: Only check SAR bits if frame is an I-frame The SAR bits doesn't make sense for an S-frame. It doesn't use SAR. Checking SAR for a S-frames can lead to L2CAP errors, it could close the channel with an invalid packet length, since we was removing the 2 of the of any frame that match SAR start bits, without check if it is an I-frame. Signed-off-by: Gustavo F. Padovan Signed-off-by: Marcel Holtmann --- diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index a9fdfe401f5b..108c2f290ac5 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -4117,7 +4117,7 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk skb_pull(skb, 2); len = skb->len; - if (__is_sar_start(control)) + if (__is_sar_start(control) && __is_iframe(control)) len -= 2; if (pi->fcs == L2CAP_FCS_CRC16)