linux-kernel - net/netfilter/xt_TEE.c:48: undefined reference to `nf_dup

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Date:   Thu, 18 Oct 2018 21:13:18 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Máté Eckl <ecklm94@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Pablo Neira Ayuso <pablo@...filter.org>
Subject: net/netfilter/xt_TEE.c:48: undefined reference to `nf_dup_ipv6'

Hi Máté,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   fa520c47eaa15b9baa8ad66ac18da4a31679693b
commit: 5d400a4933e867dbc3706023c8ed55d364c233ed netfilter: Kconfig: Change select IPv6 dependencies
date:   3 months ago
config: x86_64-randconfig-h0-10181100 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout 5d400a4933e867dbc3706023c8ed55d364c233ed
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/netfilter/xt_TEE.o: In function `tee_tg6':
>> net/netfilter/xt_TEE.c:48: undefined reference to `nf_dup_ipv6'

vim +48 net/netfilter/xt_TEE.c

e281b1989 Jan Engelhardt    2010-04-19  40  
5d400a493 Máté Eckl         2018-07-10  41  #if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
e281b1989 Jan Engelhardt    2010-04-19  42  static unsigned int
4b560b447 Jan Engelhardt    2009-07-05  43  tee_tg6(struct sk_buff *skb, const struct xt_action_param *par)
e281b1989 Jan Engelhardt    2010-04-19  44  {
e281b1989 Jan Engelhardt    2010-04-19  45  	const struct xt_tee_tginfo *info = par->targinfo;
45efccdbe Eric Dumazet      2015-10-19  46  	int oif = info->priv ? info->priv->oif : 0;
e281b1989 Jan Engelhardt    2010-04-19  47  
613dbd957 Pablo Neira Ayuso 2016-11-03 @48  	nf_dup_ipv6(xt_net(par), skb, xt_hooknum(par), &info->gw.in6, oif);
e281b1989 Jan Engelhardt    2010-04-19  49  
e281b1989 Jan Engelhardt    2010-04-19  50  	return XT_CONTINUE;
e281b1989 Jan Engelhardt    2010-04-19  51  }
dfd56b8b3 Eric Dumazet      2011-12-10  52  #endif
e281b1989 Jan Engelhardt    2010-04-19  53  

:::::: The code at line 48 was first introduced by commit
:::::: 613dbd95723aee7abd16860745691b6c7bda20dc netfilter: x_tables: move hook state into xt_action_param structure

:::::: TO: Pablo Neira Ayuso <pablo@...filter.org>
:::::: CC: Pablo Neira Ayuso <pablo@...filter.org>

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