ERROR: modpost: "nf_conntrack_net_id" [net/netfilter/nft_ct.ko] undefined!

[kernel test robot]

tree:   https://github.com/0day-ci/linux/commits/UPDATE-20220320-063014/Phil-Sutter/netfilter-conntrack-Add-and-use-nf_ct_set_auto_assign_helper_warned/20220303-050505
head:   6da9aa33806ac1acc20a7e05e3197618b75e3049
commit: 6da9aa33806ac1acc20a7e05e3197618b75e3049 netfilter: conntrack: Add and use nf_ct_set_auto_assign_helper_warned()
date:   16 hours ago
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20220320/202203202244.ksI5JHVO-lkp@xxxxxxxxx/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/6da9aa33806ac1acc20a7e05e3197618b75e3049
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review UPDATE-20220320-063014/Phil-Sutter/netfilter-conntrack-Add-and-use-nf_ct_set_auto_assign_helper_warned/20220303-050505
        git checkout 6da9aa33806ac1acc20a7e05e3197618b75e3049
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "nf_conntrack_net_id" [net/netfilter/nft_ct.ko] undefined!

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp