netdev - [PATCH 01/19] usbnet: smsc95xx: Fix memory leak in smsc95xx

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Date:   Thu,  3 Jan 2019 02:10:22 +0100
From:   Marek Vasut <marex@...x.de>
To:     netdev@...r.kernel.org
Cc:     Marek Vasut <marex@...x.de>,
        "David S . Miller" <davem@...emloft.net>,
        Nisar Sayed <Nisar.Sayed@...rochip.com>,
        Woojung Huh <Woojung.Huh@...rochip.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        linux-usb@...r.kernel.org
Subject: [PATCH 01/19] usbnet: smsc95xx: Fix memory leak in smsc95xx_bind

In case reading of PHY register fails in smsc95xx_bind(), the private
data allocated earlier are not free()d. Free them before bailing out.

Signed-off-by: Marek Vasut <marex@...x.de>
Cc: David S. Miller <davem@...emloft.net>
Cc: Nisar Sayed <Nisar.Sayed@...rochip.com>
Cc: Woojung Huh <Woojung.Huh@...rochip.com>
Cc: Andrew Lunn <andrew@...n.ch>
Cc: Florian Fainelli <f.fainelli@...il.com>
Cc: linux-usb@...r.kernel.org
To: netdev@...r.kernel.org
---
 drivers/net/usb/smsc95xx.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index e3d08626828e..772429c17ae1 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -1303,7 +1303,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
 	/* detect device revision as different features may be available */
 	ret = smsc95xx_read_reg(dev, ID_REV, &val);
 	if (ret < 0)
-		return ret;
+		goto err_read_reg;
 	val >>= 16;
 	pdata->chip_id = val;
 	pdata->mdix_ctrl = get_mdix_status(dev->net);
@@ -1329,6 +1329,9 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
 	schedule_delayed_work(&pdata->carrier_check, CARRIER_CHECK_DELAY);
 
 	return 0;
+err_read_reg:
+	kfree(pdata);
+	return ret;
 }
 
 static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
-- 
2.19.2