* [PATCH AUTOSEL 5.4 01/73] Bluetooth: Fix debugfs entry leak in hci_register_dev()
@ 2022-01-18 2:43 Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2022-01-18 2:43 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Wei Yongjun, Marcel Holtmann, Sasha Levin, johan.hedberg,
luiz.dentz, davem, kuba, linux-bluetooth, netdev
From: Wei Yongjun <weiyongjun1@huawei.com>
[ Upstream commit 5a4bb6a8e981d3d0d492aa38412ee80b21033177 ]
Fault injection test report debugfs entry leak as follows:
debugfs: Directory 'hci0' with parent 'bluetooth' already present!
When register_pm_notifier() failed in hci_register_dev(), the debugfs
create by debugfs_create_dir() do not removed in the error handing path.
Add the remove debugfs code to fix it.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index c50e3e8afbd34..2edaa601df13a 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3387,6 +3387,7 @@ int hci_register_dev(struct hci_dev *hdev)
return id;
err_wqueue:
+ debugfs_remove_recursive(hdev->debugfs);
destroy_workqueue(hdev->workqueue);
destroy_workqueue(hdev->req_workqueue);
err:
--
2.34.1
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