tree: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git for-next/seccomp head: b29bb87cbb0aa6013ab4d5463c87d8f6d2498b1c commit: 50ca89d3a4fbed2c37b759fa8a18a1b56c530fb4 [20/22] fs: Expand __fd_install_received() to accept fd config: m68k-allnoconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 9.3.0 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 git checkout 50ca89d3a4fbed2c37b759fa8a18a1b56c530fb4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): m68k-linux-ld: fs/file.o: in function `__fd_install_received': file.c:(.text+0x11f0): undefined reference to `sock_from_file' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org