[PATCH 4.4 072/149] usb: gadget: net2280: fix memory leak on probe error handling paths

From: Greg Kroah-Hartman
Date: Thu Aug 20 2020 - 06:29:02 EST


From: Evgeny Novikov <novikov@xxxxxxxxx>

[ Upstream commit 2468c877da428ebfd701142c4cdfefcfb7d4c00e ]

Driver does not release memory for device on error handling paths in
net2280_probe() when gadget_release() is not registered yet.

The patch fixes the bug like in other similar drivers.

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

Signed-off-by: Evgeny Novikov <novikov@xxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/usb/gadget/udc/net2280.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
index 3a8d056a5d16b..48dd0da21e2b4 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -3712,8 +3712,10 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;

done:
- if (dev)
+ if (dev) {
net2280_remove(pdev);
+ kfree(dev);
+ }
return retval;
}

--
2.25.1