[PATCH 1/2] Bluetooth: hci_conn: Fix not cleaning up on LE Connection failure

From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: [PATCH 1/2] Bluetooth: hci_conn: Fix not cleaning up on LE Connection failure
Date: Fri, 24 Mar 2023 13:45:24 -0700	[thread overview]
Message-ID: <20230324204525.3630188-1-luiz.dentz@gmail.com> (raw)

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

hci_connect_le_scan_cleanup shall always be invoked to cleanup the
states and re-enable passive scanning if necessary, otherwise it may
cause the pending action to stay active causing multiple attempts to
connect.

Fixes: 9b3628d79b46 ("Bluetooth: hci_sync: Cleanup hci_conn if it cannot be aborted")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
---
 net/bluetooth/hci_conn.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 17b946f9ba31..0cd339ba7858 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -88,7 +88,16 @@ static void hci_connect_le_scan_cleanup(struct hci_conn *conn)
 
 	params = hci_pend_le_action_lookup(&hdev->pend_le_conns, bdaddr,
 					   bdaddr_type);
-	if (!params || !params->explicit_connect)
+	if (!params)
+		return;
+
+	if (params->conn) {
+		hci_conn_drop(params->conn);
+		hci_conn_put(params->conn);
+		params->conn = NULL;
+	}
+
+	if (!params->explicit_connect)
 		return;
 
 	/* The connection attempt was doing scan for new RPA, and is
@@ -1181,13 +1190,7 @@ static void hci_le_conn_failed(struct hci_conn *conn, u8 status)
 	struct hci_dev *hdev = conn->hdev;
 	struct hci_conn_params *params;
 
-	params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst,
-					   conn->dst_type);
-	if (params && params->conn) {
-		hci_conn_drop(params->conn);
-		hci_conn_put(params->conn);
-		params->conn = NULL;
-	}
+	hci_connect_le_scan_cleanup(conn);
 
 	/* If the status indicates successful cancellation of
 	 * the attempt (i.e. Unknown Connection Id) there's no point of
@@ -1200,11 +1203,6 @@ static void hci_le_conn_failed(struct hci_conn *conn, u8 status)
 		mgmt_connect_failed(hdev, &conn->dst, conn->type,
 				    conn->dst_type, status);
 
-	/* Since we may have temporarily stopped the background scanning in
-	 * favor of connection establishment, we should restart it.
-	 */
-	hci_update_passive_scan(hdev);
-
 	/* Enable advertising in case this was a failed connection
 	 * attempt as a peripheral.
 	 */
-- 
2.39.2

