[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230224195313.1877313-1-jiangzp@google.com>
Date: Fri, 24 Feb 2023 11:53:12 -0800
From: Zhengping Jiang <jiangzp@...gle.com>
To: linux-bluetooth@...r.kernel.org, marcel@...tmann.org,
luiz.dentz@...il.com
Cc: mmandlik@...gle.com, 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>,
Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org
Subject: [kernel PATCH v2 0/1] Clear workqueue to avoid use-after-free
After the hci_sync rework, cmd_sync_work was cleared when calling
hci_unregister_dev, but not when powering off the adapter.
Use-after-free errors happen when a work is still scheduled
when cmd is freed by __mgmt_power_off.
Changes in v2:
- Add function to clear the queue without stop the timer
Changes in v1:
- Clear cmd_sync_work queue before clearing the mgmt cmd list
Zhengping Jiang (1):
Bluetooth: hci_sync: clear workqueue before clear mgmt cmd
net/bluetooth/hci_sync.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
--
2.39.2.722.g9855ee24e9-goog
Powered by blists - more mailing lists