From c8159f9a1ae9c9ea76b389666a37bd9263a761cd Mon Sep 17 00:00:00 2001
From: Anton Vasilyev <vasilyev@ispras.ru>
Date: Fri, 27 Jul 2018 18:50:42 +0300
Subject: [PATCH] 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>
---
 drivers/net/can/usb/ems_usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index b00358297424..d0846ae9e0e4 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -1071,6 +1071,7 @@ 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);
 	}
 }