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Message-Id: <20220822214430.kernel.v2.1.I1d10fc551cadae988dcf2fc66ad8c9eec2d7026b@changeid>
Date: Mon, 22 Aug 2022 21:44:34 -0700
From: Zhengping Jiang <jiangzp@...gle.com>
To: linux-bluetooth@...r.kernel.org, marcel@...tmann.org
Cc: chromeos-bluetooth-upstreaming@...omium.org,
Zhengping Jiang <jiangzp@...gle.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Johan Hedberg <johan.hedberg@...il.com>,
Luiz Augusto von Dentz <luiz.dentz@...il.com>,
Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Subject: [kernel PATCH v2 1/1] Bluetooth: hci_sync: hold hdev->lock when
cleanup hci_conn
When disconnecting all devices, hci_conn_failed is used to cleanup
hci_conn object when the hci_conn object cannot be aborted.
The function hci_conn_failed requires the caller holds hdev->lock.
Fixes: 9b3628d79b46f ("Bluetooth: hci_sync: Cleanup hci_conn if it cannot be aborted")
Signed-off-by: Zhengping Jiang <jiangzp@...gle.com>
---
Changes in v2:
- Update commit message
Changes in v1:
- Hold hdev->lock for hci_conn_failed
net/bluetooth/hci_sync.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 74a0cd5d0b37f..e08c0503027d8 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -5034,9 +5034,11 @@ int hci_abort_conn_sync(struct hci_dev *hdev, struct hci_conn *conn, u8 reason)
/* Cleanup hci_conn object if it cannot be cancelled as it
* likelly means the controller and host stack are out of sync.
*/
- if (err)
+ if (err) {
+ hci_dev_lock(hdev);
hci_conn_failed(conn, err);
-
+ hci_dev_unlock(hdev);
+ }
return err;
case BT_CONNECT2:
return hci_reject_conn_sync(hdev, conn, reason);
--
2.37.1.595.g718a3a8f04-goog
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