[kbuild-all] [zen:5.16/bbr2 12/26] ERROR: modpost: "__divdi3" [net/ipv4/tcp_bbr.ko] undefined!

tree: https://github.com/zen-kernel/zen-kernel 5.16/bbr2 head: c1f95253acc824f05259fbc1a9209991d5719c23 commit: 40c274ef9144f3ad032e482a002461a02829ce1b [12/26] net-tcp: re-generalize TSO sizing in TCP CC module API config: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20220111/202201110840.20xEu1lp-lk...) compiler: m68k-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/zen-kernel/zen-kernel/commit/40c274ef9144f3ad032e482a0... git remote add zen https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen 5.16/bbr2 git checkout 40c274ef9144f3ad032e482a002461a02829ce1b # 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=m68k SHELL=/bin/bash 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 >>, old ones prefixed by <<): --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org