netdev - [PATCH] can: usb_8dev: fix urb leak on failure path in usb_8dev

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Message-Id: <1374096033-28981-1-git-send-email-khoroshilov@ispras.ru>
Date:	Thu, 18 Jul 2013 01:20:33 +0400
From:	Alexey Khoroshilov <khoroshilov@...ras.ru>
To:	Wolfgang Grandegger <wg@...ndegger.com>,
	Marc Kleine-Budde <mkl@...gutronix.de>
Cc:	Alexey Khoroshilov <khoroshilov@...ras.ru>,
	Bernd Krumboeck <krumboeck@...versalnet.at>,
	linux-can@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, ldv-project@...uxtesting.org
Subject: [PATCH] can: usb_8dev: fix urb leak on failure path in usb_8dev_start()

If usb_8dev_start() fails to submit urb,
it unanchors the urb but forgets to free it.

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

Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
---
 drivers/net/can/usb/usb_8dev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index cbd388e..8becd3d 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -779,6 +779,7 @@ static int usb_8dev_start(struct usb_8dev_priv *priv)
 			usb_unanchor_urb(urb);
 			usb_free_coherent(priv->udev, RX_BUFFER_SIZE, buf,
 					  urb->transfer_dma);
+			usb_free_urb(urb);
 			break;
 		}
 
-- 
1.8.1.2

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