From 5a4bb6a8e981d3d0d492aa38412ee80b21033177 Mon Sep 17 00:00:00 2001
From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Wed, 13 Oct 2021 16:55:46 +0800
Subject: [PATCH] Bluetooth: Fix debugfs entry leak in hci_register_dev()
Git-commit: 5a4bb6a8e981d3d0d492aa38412ee80b21033177
Patch-mainline: v5.17-rc1
References: git-fixes
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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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 8d33aa64846b..98533def61a3 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -3882,6 +3882,7 @@ 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:
--
2.31.1