netdev - [PATCH net 3/3] amt: fix possible memory leak in amt

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Date:   Mon, 23 May 2022 16:17:08 +0000
From:   Taehee Yoo <ap420073@...il.com>
To:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        edumazet@...gle.com, netdev@...r.kernel.org
Cc:     ap420073@...il.com
Subject: [PATCH net 3/3] amt: fix possible memory leak in amt_rcv()

If an amt receives packets and it finds socket.
If it can't find a socket, it should free a received skb.
But it doesn't.
So, a memory leak would possibly occur.

Fixes: cbc21dc1cfe9 ("amt: add data plane of amt interface")
Signed-off-by: Taehee Yoo <ap420073@...il.com>
---
 drivers/net/amt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/amt.c b/drivers/net/amt.c
index 635de07b2e40..ebee5f07a208 100644
--- a/drivers/net/amt.c
+++ b/drivers/net/amt.c
@@ -2679,7 +2679,7 @@ static int amt_rcv(struct sock *sk, struct sk_buff *skb)
 	amt = rcu_dereference_sk_user_data(sk);
 	if (!amt) {
 		err = true;
-		goto out;
+		goto drop;
 	}
 
 	skb->dev = amt->dev;
-- 
2.17.1