[PATCH 5.13 22/22] ipv6: ip6_finish_output2: set sk into newly allocated nskb

From: Greg Kroah-Hartman
Date: Thu Jul 29 2021 - 10:09:03 EST


From: Vasily Averin <vvs@xxxxxxxxxxxxx>

[ Upstream commit 2d85a1b31dde84038ea07ad825c3d8d3e71f4344 ]

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@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/70c0744f-89ae-1869-7e3e-4fa292158f4b@xxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 b05f3f0da3a6..6062ad1d5b51 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);
--
2.30.2