Re: [PATCH RFC v2 bpf-next 1/3] bpf: add bpf_link support for BPF_NETFILTER programs

[kernel test robot <lkp@intel.com>]

Hi Florian,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Florian-Westphal/bpf-add-bpf_link-support-for-BPF_NETFILTER-programs/20230303-013022
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20230302172757.9548-2-fw%40strlen.de
patch subject: [PATCH RFC v2 bpf-next 1/3] bpf: add bpf_link support for BPF_NETFILTER programs
config: i386-randconfig-a002 (https://download.01.org/0day-ci/archive/20230303/202303030501.plArM8Yu-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/intel-lab-lkp/linux/commit/dafd9c7dce974be4bf60f89c8427a765acfcba77
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Florian-Westphal/bpf-add-bpf_link-support-for-BPF_NETFILTER-programs/20230303-013022
        git checkout dafd9c7dce974be4bf60f89c8427a765acfcba77
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303030501.plArM8Yu-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: bpf_nf_link_attach
   >>> referenced by syscall.c:4641 (kernel/bpf/syscall.c:4641)
   >>>               kernel/bpf/syscall.o:(link_create) in archive vmlinux.a

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests