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Bluetooth: Fix invalid length check in l2cap_information_rsp()

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The length check is invalid since the length varies with type of
info response.

This was introduced by the commit cb3b3152b2

Because of this, l2cap info rsp is not handled and command reject is sent.

> ACL data: handle 11 flags 0x02 dlen 16
        L2CAP(s): Info rsp: type 2 result 0
          Extended feature mask 0x00b8
            Enhanced Retransmission mode
            Streaming mode
            FCS Option
            Fixed Channels
< ACL data: handle 11 flags 0x00 dlen 10
        L2CAP(s): Command rej: reason 0
          Command not understood

Cc: stable@vger.kernel.org
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Chan-Yeol Park <chanyeol.park@samsung.com>
Acked-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Jaganath Kanakkassery 2013-06-21 19:55:11 +05:30 committed by Gustavo Padovan
parent fcb3701849
commit 3f6fa3d489
1 changed files with 1 additions and 1 deletions
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2
net/bluetooth/l2cap_core.c
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@ -4333,7 +4333,7 @@ static inline int l2cap_information_rsp(struct l2cap_conn *conn,
struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data; struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) data;
u16 type, result; u16 type, result;
if (cmd_len != sizeof(*rsp)) if (cmd_len < sizeof(*rsp))
return -EPROTO; return -EPROTO;
type = __le16_to_cpu(rsp->type); type = __le16_to_cpu(rsp->type);