From: Arnd Bergmann <arnd@arndb.de>
To: Pablo Neira Ayuso <pablo@netfilter.org>,
Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>,
Florian Westphal <fw@strlen.de>,
"David S. Miller" <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>,
netfilter-devel@vger.kernel.org, coreteam@netfilter.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] netfilter: fix CONFIG_NF_REJECT_IPV6=m link error
Date: Mon, 9 Apr 2018 12:53:12 +0200 [thread overview]
Message-ID: <20180409105322.2247296-1-arnd@arndb.de> (raw)
We get a new link error with CONFIG_NFT_REJECT_INET=y and CONFIG_NF_REJECT_IPV6=m
after larger parts of the nftables modules are linked together:
net/netfilter/nft_reject_inet.o: In function `nft_reject_inet_eval':
nft_reject_inet.c:(.text+0x17c): undefined reference to `nf_send_unreach6'
nft_reject_inet.c:(.text+0x190): undefined reference to `nf_send_reset6'
The problem is that with NF_TABLES_INET set, we implicitly try to use
the ipv6 version as well for NFT_REJECT, but when CONFIG_IPV6 is set to
a loadable module, it's impossible to reach that.
The best workaround I found is to express the above as a Kconfig
dependency, forcing NFT_REJECT itself to be 'm' in that particular
configuration.
Fixes: 02c7b25e5f54 ("netfilter: nf_tables: build-in filter chain type")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
net/netfilter/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index 704b3832dbad..44d8a55e9721 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -594,6 +594,7 @@ config NFT_QUOTA
config NFT_REJECT
default m if NETFILTER_ADVANCED=n
tristate "Netfilter nf_tables reject support"
+ depends on !NF_TABLES_INET || (IPV6!=m || m)
help
This option adds the "reject" expression that you can use to
explicitly deny and notify via TCP reset/ICMP informational errors
--
2.9.0
next reply other threads:[~2018-04-09 10:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-09 10:53 Arnd Bergmann [this message]
2018-04-09 14:37 ` [PATCH] netfilter: fix CONFIG_NF_REJECT_IPV6=m link error Pablo Neira Ayuso
2018-04-09 14:43 ` Arnd Bergmann
2018-04-13 13:15 ` Pablo Neira Ayuso
2018-04-13 14:52 ` Arnd Bergmann
2018-04-14 6:54 ` [PATCH] netfilter: CONFIG_NF_REJECT_IPV{4,6} becomes bool toggle kbuild test robot
2018-04-14 9:45 ` kbuild test robot
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