linux-kernel - [PATCH 5.9 023/255] netfilter: nftables: fix netlink report logic in flowtable and genid

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Message-Id: <20201117122140.072117870@linuxfoundation.org>
Date:   Tue, 17 Nov 2020 14:02:43 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Pablo Neira Ayuso <pablo@...filter.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.9 023/255] netfilter: nftables: fix netlink report logic in flowtable and genid

From: Pablo Neira Ayuso <pablo@...filter.org>

[ Upstream commit dceababac29d1c53cbc1f7ddf6f688d2df01da87 ]

The netlink report should be sent regardless the available listeners.

Fixes: 84d7fce69388 ("netfilter: nf_tables: export rule-set generation ID")
Fixes: 3b49e2e94e6e ("netfilter: nf_tables: add flow table netlink frontend")
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 net/netfilter/nf_tables_api.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index 72f3ee47e478f..1c90bd1fce60c 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -7076,7 +7076,7 @@ static void nf_tables_flowtable_notify(struct nft_ctx *ctx,
 			GFP_KERNEL);
 	kfree(buf);
 
-	if (ctx->report &&
+	if (!ctx->report &&
 	    !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES))
 		return;
 
@@ -7198,7 +7198,7 @@ static void nf_tables_gen_notify(struct net *net, struct sk_buff *skb,
 	audit_log_nfcfg("?:0;?:0", 0, net->nft.base_seq,
 			AUDIT_NFT_OP_GEN_REGISTER, GFP_KERNEL);
 
-	if (nlmsg_report(nlh) &&
+	if (!nlmsg_report(nlh) &&
 	    !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES))
 		return;
 
-- 
2.27.0