linux-kernel - [PATCH NET] ipv6: ip6_finish_output2: set sk into newly allocated nskb

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Date:   Mon, 19 Jul 2021 10:55:14 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        David Ahern <dsahern@...nel.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>
Subject: [PATCH NET] ipv6: ip6_finish_output2: set sk into newly allocated
 nskb

skb_set_owner_w() should set sk not to old skb but to new nskb.

Fixes: 5796015fa968("ipv6: allocate enough headroom in ip6_finish_output2()")
Signed-off-by: Vasily Averin <vvs@...tuozzo.com>
---
 net/ipv6/ip6_output.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 01bea76..e1b9f7a 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -74,7 +74,7 @@ static int ip6_finish_output2(struct net *net, struct sock *sk, struct sk_buff *
 
 			if (likely(nskb)) {
 				if (skb->sk)
-					skb_set_owner_w(skb, skb->sk);
+					skb_set_owner_w(nskb, skb->sk);
 				consume_skb(skb);
 			} else {
 				kfree_skb(skb);
-- 
1.8.3.1