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Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth

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Johan Hedberg says:

====================
pull request: bluetooth 2015-11-05

The following set of Bluetooth patches would be good to get into 4.4-rc1
if possible:

 - Fix for missing LE CoC parameter validity checks
 - Fix for potential deadlock in btusb
 - Fix for issuing unsupported commands during HCI init

Please let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2015-11-05 11:38:06 -05:00
commit 096273304c
4 changed files with 34 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/bluetooth/btusb.c
View File

@ -1372,6 +1372,8 @@ static void btusb_work(struct work_struct *work)
}
if (data->isoc_altsetting != new_alts) {
unsigned long flags;
clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
usb_kill_anchored_urbs(&data->isoc_anchor);
@ -1384,10 +1386,10 @@ static void btusb_work(struct work_struct *work)
* Clear outstanding fragment when selecting a new
* alternate setting.
*/
spin_lock(&data->rxlock);
spin_lock_irqsave(&data->rxlock, flags);
kfree_skb(data->sco_skb);
data->sco_skb = NULL;
spin_unlock(&data->rxlock);
spin_unlock_irqrestore(&data->rxlock, flags);
if (__set_isoc_interface(hdev, new_alts) < 0)
return;

2
include/net/bluetooth/l2cap.h
View File

@ -275,6 +275,8 @@ struct l2cap_conn_rsp {
#define L2CAP_CR_AUTHORIZATION 0x0006
#define L2CAP_CR_BAD_KEY_SIZE 0x0007
#define L2CAP_CR_ENCRYPTION 0x0008
#define L2CAP_CR_INVALID_SCID 0x0009
#define L2CAP_CR_SCID_IN_USE 0x0010
/* connect/create channel status */
#define L2CAP_CS_NO_INFO 0x0000

17
net/bluetooth/hci_core.c
View File

@ -508,12 +508,6 @@ static void le_setup(struct hci_request *req)
/* Read LE Supported States */
hci_req_add(req, HCI_OP_LE_READ_SUPPORTED_STATES, 0, NULL);
/* Read LE White List Size */
hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE, 0, NULL);
/* Clear LE White List */
hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL);
/* LE-only controllers have LE implicitly enabled */
if (!lmp_bredr_capable(hdev))
hci_dev_set_flag(hdev, HCI_LE_ENABLED);
@ -832,6 +826,17 @@ static void hci_init3_req(struct hci_request *req, unsigned long opt)
hci_req_add(req, HCI_OP_LE_READ_ADV_TX_POWER, 0, NULL);
}
if (hdev->commands[26] & 0x40) {
/* Read LE White List Size */
hci_req_add(req, HCI_OP_LE_READ_WHITE_LIST_SIZE,
0, NULL);
}
if (hdev->commands[26] & 0x80) {
/* Clear LE White List */
hci_req_add(req, HCI_OP_LE_CLEAR_WHITE_LIST, 0, NULL);
}
if (hdev->le_features[0] & HCI_LE_DATA_LEN_EXT) {
/* Read LE Maximum Data Length */
hci_req_add(req, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL);

20
net/bluetooth/l2cap_core.c
View File

@ -239,7 +239,7 @@ static u16 l2cap_alloc_cid(struct l2cap_conn *conn)
else
dyn_end = L2CAP_CID_DYN_END;
for (cid = L2CAP_CID_DYN_START; cid < dyn_end; cid++) {
for (cid = L2CAP_CID_DYN_START; cid <= dyn_end; cid++) {
if (!__l2cap_get_chan_by_scid(conn, cid))
return cid;
}
@ -5250,7 +5250,9 @@ static int l2cap_le_connect_rsp(struct l2cap_conn *conn,
credits = __le16_to_cpu(rsp->credits);
result = __le16_to_cpu(rsp->result);
if (result == L2CAP_CR_SUCCESS && (mtu < 23 || mps < 23))
if (result == L2CAP_CR_SUCCESS && (mtu < 23 || mps < 23 ||
dcid < L2CAP_CID_DYN_START ||
dcid > L2CAP_CID_LE_DYN_END))
return -EPROTO;
BT_DBG("dcid 0x%4.4x mtu %u mps %u credits %u result 0x%2.2x",
@ -5270,6 +5272,11 @@ static int l2cap_le_connect_rsp(struct l2cap_conn *conn,
switch (result) {
case L2CAP_CR_SUCCESS:
if (__l2cap_get_chan_by_dcid(conn, dcid)) {
err = -EBADSLT;
break;
}
chan->ident = 0;
chan->dcid = dcid;
chan->omtu = mtu;
@ -5437,9 +5444,16 @@ static int l2cap_le_connect_req(struct l2cap_conn *conn,
goto response_unlock;
}
/* Check for valid dynamic CID range */
if (scid < L2CAP_CID_DYN_START || scid > L2CAP_CID_LE_DYN_END) {
result = L2CAP_CR_INVALID_SCID;
chan = NULL;
goto response_unlock;
}
/* Check if we already have channel with that dcid */
if (__l2cap_get_chan_by_dcid(conn, scid)) {
result = L2CAP_CR_NO_MEM;
result = L2CAP_CR_SCID_IN_USE;
chan = NULL;
goto response_unlock;
}