This is a note to let you know that I've just added the patch titled
Bluetooth: Fix usage of __hci_cmd_sync_status
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-fix-usage-of-__hci_cmd_sync_status.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8764bbc2478475e3c513355f861bf23d866413fa
Author: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Date: Mon Jul 1 12:07:46 2024 -0400
Bluetooth: Fix usage of __hci_cmd_sync_status
[ Upstream commit 87be7b189b2c50d4b51512f59e4e97db4eedee8a ]
__hci_cmd_sync_status shall only be used if hci_req_sync_lock is _not_
required which is not the case of hci_dev_cmd so it needs to use
hci_cmd_sync_status which uses hci_req_sync_lock internally.
Fixes: f1a8f402f13f ("Bluetooth: L2CAP: Fix deadlock")
Reported-by: Pauli Virtanen <pav@xxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index f787b0eb7d669..d4e607bf35baf 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -711,8 +711,8 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
switch (cmd) {
case HCISETAUTH:
- err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
- 1, &dr.dev_opt, HCI_CMD_TIMEOUT);
+ err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_AUTH_ENABLE,
+ 1, &dr.dev_opt, HCI_CMD_TIMEOUT);
break;
case HCISETENCRYPT:
@@ -723,23 +723,21 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
if (!test_bit(HCI_AUTH, &hdev->flags)) {
/* Auth must be enabled first */
- err = __hci_cmd_sync_status(hdev,
- HCI_OP_WRITE_AUTH_ENABLE,
- 1, &dr.dev_opt,
- HCI_CMD_TIMEOUT);
+ err = hci_cmd_sync_status(hdev,
+ HCI_OP_WRITE_AUTH_ENABLE,
+ 1, &dr.dev_opt,
+ HCI_CMD_TIMEOUT);
if (err)
break;
}
- err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_ENCRYPT_MODE,
- 1, &dr.dev_opt,
- HCI_CMD_TIMEOUT);
+ err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_ENCRYPT_MODE,
+ 1, &dr.dev_opt, HCI_CMD_TIMEOUT);
break;
case HCISETSCAN:
- err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
- 1, &dr.dev_opt,
- HCI_CMD_TIMEOUT);
+ err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_SCAN_ENABLE,
+ 1, &dr.dev_opt, HCI_CMD_TIMEOUT);
/* Ensure that the connectable and discoverable states
* get correctly modified as this was a non-mgmt change.
@@ -751,9 +749,8 @@ int hci_dev_cmd(unsigned int cmd, void __user *arg)
case HCISETLINKPOL:
policy = cpu_to_le16(dr.dev_opt);
- err = __hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
- 2, &policy,
- HCI_CMD_TIMEOUT);
+ err = hci_cmd_sync_status(hdev, HCI_OP_WRITE_DEF_LINK_POLICY,
+ 2, &policy, HCI_CMD_TIMEOUT);
break;
case HCISETLINKMODE:
