can: ems_usb: Fix memory leak on ems_usb_disconnect()

commit 72c05f32f4a5055c9c8fe889bb6903ec959c0aad upstream.

ems_usb_probe() allocates memory for dev->tx_msg_buffer, but there
is no its deallocation in ems_usb_disconnect().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru>
Cc: <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index b1ca40552a84245f8000ce727c686657a60befb6..2af6e3c8b718653671df478efcd3ea3720a66909 100644 (file)
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -1083,6 +1083,7 @@ static void ems_usb_disconnect(struct usb_interface *intf)
                usb_free_urb(dev->intr_urb);
 
                kfree(dev->intr_in_buffer);
+               kfree(dev->tx_msg_buffer);
        }
 }