diff mbox series

[v1,1/2] Bluetooth: hci_serdev: clear HCI_UART_PROTO_READY to avoid closing proto races

Message ID 20180822120412.20285-2-bgodavar@codeaurora.org (mailing list archive)
State Not Applicable, archived
Delegated to: Andy Gross
Headers show
Series Fix for proto races in hci_serdev. | expand

Commit Message

Balakrishna Godavarthi Aug. 22, 2018, 12:04 p.m. UTC 
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 <bgodavar@codeaurora.org>
---
 drivers/bluetooth/hci_serdev.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

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);