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authorDavid S. Miller <davem@davemloft.net>2015-11-05 11:38:06 -0500
committerDavid S. Miller <davem@davemloft.net>2015-11-05 11:38:06 -0500
commit096273304cb13b1b6a611026759df7c738a0e4e2 (patch)
treed7a17fa41eaa5de192e09ba7350fb02b33a03cab
parentd4e4bc16102cb1338be9c75f797156718f8a806d (diff)
parent40624183c202278e7e0edd01d1273efc87ddd1f2 (diff)
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
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>
-rw-r--r--drivers/bluetooth/btusb.c6
-rw-r--r--include/net/bluetooth/l2cap.h2
-rw-r--r--net/bluetooth/hci_core.c17
-rw-r--r--net/bluetooth/l2cap_core.c20
4 files changed, 34 insertions, 11 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index e33dacf5bd98..92f0ee388f9e 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -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;
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index c98afc08cc26..52899291f401 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -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
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 83a6aacfab31..62edbf1b114e 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -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);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 7c65ee200c29..66e8b6ee19a5 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -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;
}