net: ipv6: fix missing dst ref drop in ila lwtunnel

[ Upstream commit 5da15a9c11c1c47ef573e6805b60a7d8a1687a2a ]

Add missing skb_dst_drop() to drop reference to the old dst before
adding the new dst to the skb.

Fixes: 79ff2fc31e0f ("ila: Cache a route to translated address")
Cc: Tom Herbert <tom@herbertland.com>
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Link: https://patch.msgid.link/20250305081655.19032-1-justin.iurman@uliege.be
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 6d37dda3d26fc678640bb087762fe9d0c893b6f7..7397f764c66cca3634047f3dd438ac0839f7edcf 100644 (file)
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -96,6 +96,7 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
                }
        }
 
+       skb_dst_drop(skb);
        skb_dst_set(skb, dst);
        return dst_output(net, sk, skb);