linux-kernel - [PATCH net 2/3] net: lan78xx: fix transfer-buffer memory leak

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Date:   Tue, 28 Jul 2020 14:10:30 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Woojung Huh <woojung.huh@...rochip.com>
Cc:     Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Johan Hovold <johan@...nel.org>,
        "Woojung . Huh @ microchip . com" <Woojung.Huh@...rochip.com>
Subject: [PATCH net 2/3] net: lan78xx: fix transfer-buffer memory leak

The interrupt URB transfer-buffer was never freed on disconnect or after
probe errors.

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Cc: Woojung.Huh@...rochip.com <Woojung.Huh@...rochip.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/net/usb/lan78xx.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index d7162690e3f3..ee062b27cfa7 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -3788,6 +3788,7 @@ static int lan78xx_probe(struct usb_interface *intf,
 			usb_fill_int_urb(dev->urb_intr, dev->udev,
 					 dev->pipe_intr, buf, maxp,
 					 intr_complete, dev, period);
+			dev->urb_intr->transfer_flags |= URB_FREE_BUFFER;
 		}
 	}
 
-- 
2.26.2