netdev - [PATCH 3/5] rsi: fix memory leak on failed URB submission

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Message-Id: <20191128172204.26600-4-johan@kernel.org>
Date:   Thu, 28 Nov 2019 18:22:02 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Amitkumar Karwar <amitkarwar@...il.com>,
        Siva Rebbagondla <siva8118@...il.com>,
        Kalle Valo <kvalo@...eaurora.org>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        Johan Hovold <johan@...nel.org>,
        stable <stable@...r.kernel.org>,
        Prameela Rani Garnepudi <prameela.j04cs@...il.com>
Subject: [PATCH 3/5] rsi: fix memory leak on failed URB submission

Make sure to free the skb on failed receive-URB submission (e.g. on
disconnect or currently also due to a missing endpoint).

Fixes: a1854fae1414 ("rsi: improve RX packet handling in USB interface")
Cc: stable <stable@...r.kernel.org>     # 4.17
Cc: Prameela Rani Garnepudi <prameela.j04cs@...il.com>
Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/net/wireless/rsi/rsi_91x_usb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/rsi/rsi_91x_usb.c b/drivers/net/wireless/rsi/rsi_91x_usb.c
index 30bed719486e..2c869df1c62e 100644
--- a/drivers/net/wireless/rsi/rsi_91x_usb.c
+++ b/drivers/net/wireless/rsi/rsi_91x_usb.c
@@ -338,8 +338,10 @@ static int rsi_rx_urb_submit(struct rsi_hw *adapter, u8 ep_num)
 			  rx_cb);
 
 	status = usb_submit_urb(urb, GFP_KERNEL);
-	if (status)
+	if (status) {
 		rsi_dbg(ERR_ZONE, "%s: Failed in urb submission\n", __func__);
+		dev_kfree_skb(skb);
+	}
 
 	return status;
 }
-- 
2.24.0