On Thu, Mar 13, 2025 at 04:31:35PM +0800, Ma Ke wrote:
Once device_add() failed, we should call put_device() to decrement reference count for cleanup. Or it could cause memory leak.
As comment of device_add() says, 'if device_add() succeeds, you should call device_del() when you want to get rid of it. If device_add() has not succeeded, use only put_device() to drop the reference count'.
Found by code review.
Cc: stable@vger.kernel.org Fixes: 54506918059a ("Bluetooth: Move SMP initialization after HCI init") Signed-off-by: Ma Ke make24@iscas.ac.cn
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 e7ec12437c8b..c03fd16d3c46 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -2641,6 +2641,7 @@ int hci_register_dev(struct hci_dev *hdev) return id; err_wqueue:
- put_device(&hdev->dev);
How was this tested?