linux-kernel - [PATCH 5.18 530/879] Bluetooth: hci_conn: Fix hci_connect_le

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Date:   Tue,  7 Jun 2022 19:00:48 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 530/879] Bluetooth: hci_conn: Fix hci_connect_le_sync

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

[ Upstream commit c9f73a2178c12fb24d2807634209559d6a836e08 ]

The handling of connection failures shall be handled by the request
completion callback as already done by hci_cs_le_create_conn, also make
sure to use hci_conn_failed instead of hci_le_conn_failed as the later
don't actually call hci_conn_del to cleanup.

Link: https://github.com/bluez/bluez/issues/340
Fixes: 8e8b92ee60de5 ("Bluetooth: hci_sync: Add hci_le_create_conn_sync")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
Signed-off-by: Marcel Holtmann <marcel@...tmann.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/bluetooth/hci_conn.c  | 5 +++--
 net/bluetooth/hci_event.c | 8 +++++---
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 882a7df13005..ac06c9724c7f 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -943,10 +943,11 @@ static void create_le_conn_complete(struct hci_dev *hdev, void *data, int err)
 
 	bt_dev_err(hdev, "request failed to create LE connection: err %d", err);
 
-	if (!conn)
+	/* Check if connection is still pending */
+	if (conn != hci_lookup_le_connect(hdev))
 		goto done;
 
-	hci_le_conn_failed(conn, err);
+	hci_conn_failed(conn, err);
 
 done:
 	hci_dev_unlock(hdev);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 0270e597c285..af17dfb20e01 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -5632,10 +5632,12 @@ static void le_conn_complete_evt(struct hci_dev *hdev, u8 status,
 		status = HCI_ERROR_INVALID_PARAMETERS;
 	}
 
-	if (status) {
-		hci_conn_failed(conn, status);
+	/* All connection failure handling is taken care of by the
+	 * hci_conn_failed function which is triggered by the HCI
+	 * request completion callbacks used for connecting.
+	 */
+	if (status)
 		goto unlock;
-	}
 
 	if (conn->dst_type == ADDR_LE_DEV_PUBLIC)
 		addr_type = BDADDR_LE_PUBLIC;
-- 
2.35.1