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Message-Id: <20191227174055.4923-37-sashal@kernel.org>
Date: Fri, 27 Dec 2019 12:38:25 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc: Pablo Neira Ayuso <pablo@...filter.org>,
Sasha Levin <sashal@...nel.org>,
netfilter-devel@...r.kernel.org, coreteam@...filter.org,
netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 5.4 037/187] netfilter: nf_tables_offload: return EOPNOTSUPP if rule specifies no actions
From: Pablo Neira Ayuso <pablo@...filter.org>
[ Upstream commit 81ec61074bcf68acfcb2820cda3ff9d9984419c7 ]
If the rule only specifies the matching side, return EOPNOTSUPP.
Otherwise, the front-end relies on the drivers to reject this rule.
Fixes: c9626a2cbdb2 ("netfilter: nf_tables: add hardware offload support")
Signed-off-by: Pablo Neira Ayuso <pablo@...filter.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
net/netfilter/nf_tables_offload.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/net/netfilter/nf_tables_offload.c b/net/netfilter/nf_tables_offload.c
index 6f7eab502e65..e743f811245f 100644
--- a/net/netfilter/nf_tables_offload.c
+++ b/net/netfilter/nf_tables_offload.c
@@ -44,6 +44,9 @@ struct nft_flow_rule *nft_flow_rule_create(struct net *net,
expr = nft_expr_next(expr);
}
+ if (num_actions == 0)
+ return ERR_PTR(-EOPNOTSUPP);
+
flow = nft_flow_rule_alloc(num_actions);
if (!flow)
return ERR_PTR(-ENOMEM);
--
2.20.1
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