Re: [PATCH bpf-next v3 2/7] bpf: per-cgroup lsm flavor

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

Hi Stanislav,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Stanislav-Fomichev/bpf-cgroup_sock-lsm-flavor/20220408-063705
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: x86_64-randconfig-a005 (https://download.01.org/0day-ci/archive/20220408/202204082305.Qs2g5Dzf-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c29a51b3a257908aebc01cd7c4655665db317d66)
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/3c3f15b5422ca616e2585d699c47aa4e7b7dcf1d
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Stanislav-Fomichev/bpf-cgroup_sock-lsm-flavor/20220408-063705
        git checkout 3c3f15b5422ca616e2585d699c47aa4e7b7dcf1d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: btf_obj_id
   >>> referenced by trampoline.c
   >>>               bpf/trampoline.o:(bpf_trampoline_link_cgroup_shim) in archive kernel/built-in.a
   >>> referenced by trampoline.c
   >>>               bpf/trampoline.o:(bpf_trampoline_unlink_cgroup_shim) in archive kernel/built-in.a

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