Re: [PATCH net-next v2 1/3] scm: add SO_PASSPIDFD and SCM_PIDFD

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

Hi Alexander,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Alexander-Mikhalitsyn/scm-add-SO_PASSPIDFD-and-SCM_PIDFD/20230322-024808
patch link:    https://lore.kernel.org/r/20230321183342.617114-2-aleksandr.mikhalitsyn%40canonical.com
patch subject: [PATCH net-next v2 1/3] scm: add SO_PASSPIDFD and SCM_PIDFD
config: arm-allmodconfig (https://download.01.org/0day-ci/archive/20230322/202303222101.avwNiFWQ-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/491b69039f4479e1e0fb3af635c96989cdd23734
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Alexander-Mikhalitsyn/scm-add-SO_PASSPIDFD-and-SCM_PIDFD/20230322-024808
        git checkout 491b69039f4479e1e0fb3af635c96989cdd23734
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm 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/202303222101.avwNiFWQ-lkp@intel.com/

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

>> ERROR: modpost: "pidfd_create" [net/unix/unix.ko] undefined!

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