linux-kernel - [PATCH 5.17 21/75] netfilter: nft_limit: Clone packet limits cost value

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Message-Id: <20220603173822.349868192@linuxfoundation.org>
Date:   Fri,  3 Jun 2022 19:43:05 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Phil Sutter <phil@....cc>,
        Pablo Neira Ayuso <pablo@...filter.org>
Subject: [PATCH 5.17 21/75] netfilter: nft_limit: Clone packet limits cost value

From: Phil Sutter <phil@....cc>

commit 558254b0b602b8605d7246a10cfeb584b1fcabfc upstream.

When cloning a packet-based limit expression, copy the cost value as
well. Otherwise the new limit is not functional anymore.

Fixes: 3b9e2ea6c11bf ("netfilter: nft_limit: move stateful fields out of expression data")
Signed-off-by: Phil Sutter <phil@....cc>
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/netfilter/nft_limit.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/netfilter/nft_limit.c
+++ b/net/netfilter/nft_limit.c
@@ -213,6 +213,8 @@ static int nft_limit_pkts_clone(struct n
 	struct nft_limit_priv_pkts *priv_dst = nft_expr_priv(dst);
 	struct nft_limit_priv_pkts *priv_src = nft_expr_priv(src);
 
+	priv_dst->cost = priv_src->cost;
+
 	return nft_limit_clone(&priv_dst->limit, &priv_src->limit);
 }