From 7cf7846d27bfc9731e449857db3eec5e0e9701ba Mon Sep 17 00:00:00 2001 From: Balakrishna Godavarthi Date: Wed, 22 Aug 2018 17:34:11 +0530 Subject: [PATCH] Bluetooth: hci_serdev: clear HCI_UART_PROTO_READY to avoid closing proto races Clearing HCI_UART_PROTO_READY will avoid usage of proto function pointers before running the proto close function pointer. There is chance of kernel crash, due to usage of non proto close function pointers after proto close. Signed-off-by: Balakrishna Godavarthi Signed-off-by: Marcel Holtmann --- drivers/bluetooth/hci_serdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bluetooth/hci_serdev.c b/drivers/bluetooth/hci_serdev.c index aa2543b3c286..46e20444ba19 100644 --- a/drivers/bluetooth/hci_serdev.c +++ b/drivers/bluetooth/hci_serdev.c @@ -368,6 +368,7 @@ void hci_uart_unregister_device(struct hci_uart *hu) { struct hci_dev *hdev = hu->hdev; + clear_bit(HCI_UART_PROTO_READY, &hu->flags); hci_unregister_dev(hdev); hci_free_dev(hdev);