[PATCH 4.9 028/212] net: lan78xx: fix transfer-buffer memory leak

From: Greg Kroah-Hartman
Date: Thu Aug 20 2020 - 08:16:00 EST


From: Johan Hovold <johan@xxxxxxxxxx>

[ Upstream commit 63634aa679ba8b5e306ad0727120309ae6ba8a8e ]

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@xxxxxxxxxxxxx <Woojung.Huh@xxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 fd144a513e1fe..7e57aabe95545 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -3421,6 +3421,7 @@ 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;
}
}

--
2.25.1