netdev - [PATCH] net/core/skmsg: Delete an unnecessary check before the function call “consume

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Date:   Thu, 22 Aug 2019 18:08:48 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     netdev@...r.kernel.org, bpf@...r.kernel.org,
        Daniel Borkmann <daniel@...earbox.net>,
        "David S. Miller" <davem@...emloft.net>,
        John Fastabend <john.fastabend@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] net/core/skmsg: Delete an unnecessary check before the function call “consume_skb”

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 22 Aug 2019 18:00:40 +0200

The consume_skb() function performs also input parameter validation.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 net/core/skmsg.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index 6832eeb4b785..cf390e0aa73d 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -190,8 +190,7 @@ static int __sk_msg_free(struct sock *sk, struct sk_msg *msg, u32 i,
 		sk_msg_check_to_free(msg, i, msg->sg.size);
 		sge = sk_msg_elem(msg, i);
 	}
-	if (msg->skb)
-		consume_skb(msg->skb);
+	consume_skb(msg->skb);
 	sk_msg_init(msg);
 	return freed;
 }
--
2.23.0