[rcu:dev.2020.05.26a 56/72] refperf.c:undefined reference to `__umoddi3'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.05.26a
head:   63fdce1252f16032c9e1eb7244bb674ba4f84855
commit: bd5b16d6c88da451a46d068a25fafad8e83d14a6 [56/72] refperf: Allow decimal nanoseconds
config: m68k-allyesconfig (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 bd5b16d6c88da451a46d068a25fafad8e83d14a6
        # 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: kbuild test robot <lkp@xxxxxxxxx>

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

m68k-linux-ld: kernel/rcu/refperf.o: in function `main_func':
>> refperf.c:(.text+0x762): undefined reference to `__umoddi3'
>> m68k-linux-ld: refperf.c:(.text+0x8f2): undefined reference to `__udivdi3'
m68k-linux-ld: refperf.c:(.text+0x97c): undefined reference to `__udivdi3'

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

Attachment: .config.gz
Description: application/gzip