linux-kernel - [PATCH AUTOSEL 6.12 096/107] Bluetooth: hci_conn: Use disable_delayed_work

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Message-ID: <20241124133301.3341829-96-sashal@kernel.org>
Date: Sun, 24 Nov 2024 08:29:56 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>,
	syzbot+2446dd3cb07277388db6@...kaller.appspotmail.com,
	Sasha Levin <sashal@...nel.org>,
	marcel@...tmann.org,
	johan.hedberg@...il.com,
	luiz.dentz@...il.com,
	linux-bluetooth@...r.kernel.org
Subject: [PATCH AUTOSEL 6.12 096/107] Bluetooth: hci_conn: Use disable_delayed_work_sync

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

[ Upstream commit 2b0f2fc9ed62e73c95df1fa8ed2ba3dac54699df ]

This makes use of disable_delayed_work_sync instead
cancel_delayed_work_sync as it not only cancel the ongoing work but also
disables new submit which is disarable since the object holding the work
is about to be freed.

Reported-by: syzbot+2446dd3cb07277388db6@...kaller.appspotmail.com
Tested-by: syzbot+2446dd3cb07277388db6@...kaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=2446dd3cb07277388db6
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/bluetooth/hci_conn.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 50e65b2f54ee6..40c4a36d2be3f 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1127,9 +1127,9 @@ void hci_conn_del(struct hci_conn *conn)
 
 	hci_conn_unlink(conn);
 
-	cancel_delayed_work_sync(&conn->disc_work);
-	cancel_delayed_work_sync(&conn->auto_accept_work);
-	cancel_delayed_work_sync(&conn->idle_work);
+	disable_delayed_work_sync(&conn->disc_work);
+	disable_delayed_work_sync(&conn->auto_accept_work);
+	disable_delayed_work_sync(&conn->idle_work);
 
 	if (conn->type == ACL_LINK) {
 		/* Unacked frames */
-- 
2.43.0