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-allyesconfig (https://download.01.org/0day-ci/archive/20220111/202201110739.GCZXHkGM-lkp(a)intel.com/config)
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/40c274ef9144f3ad032e482a002461a02829ce1b
        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@intel.com>

All errors (new ones prefixed by >>):

   m68k-linux-ld: net/ipv4/tcp_bbr.o: in function `bbr_tso_segs':
>> tcp_bbr.c:(.text+0xf6): undefined reference to `__udivdi3'
   m68k-linux-ld: net/ipv4/tcp_bbr.o: in function `bbr_quantization_budget':
   tcp_bbr.c:(.text+0x178): undefined reference to `__udivdi3'
   m68k-linux-ld: net/ipv4/tcp_bbr.o: in function `bbr_packets_in_net_at_edt':
   tcp_bbr.c:(.text+0x2aa): undefined reference to `__udivdi3'
   m68k-linux-ld: net/ipv4/tcp_bbr.o: in function `bbr_inflight':
   tcp_bbr.c:(.text+0x58c): undefined reference to `__udivdi3'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org