tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2021.08.03a
head:   b7fafd4e7d0eb2a91d3b682d2618f7fad7e34b14
commit: ee466fedb5a3507f3b2a9ecd64dae0d004097220 [42/61] EXP cpu: Add yet more CPU-hotplug progress debugging code
config: mips-maltasmvp_eva_defconfig (attached as .config)
compiler: mips-linux-gcc (GCC) 10.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=ee466fedb5a3507f3b2a9ecd64dae0d004097220
        git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
        git fetch --no-tags rcu dev.2021.08.03a
        git checkout ee466fedb5a3507f3b2a9ecd64dae0d004097220
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=mips 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 >>):

   mips-linux-ld: kernel/cpu.o: in function `cpu_hp_check_delay.part.0':
   cpu.c:(.text+0x9b0): undefined reference to `__udivdi3'
   mips-linux-ld: kernel/cpu.o: in function `cpu_hp_start_now':
>> (.text+0x22b4): undefined reference to `__udivdi3'
   mips-linux-ld: kernel/cpu.o: in function `cpu_hp_stop_now':
   (.text+0x2368): undefined reference to `__udivdi3'
>> mips-linux-ld: (.text+0x2394): undefined reference to `__udivdi3'
   mips-linux-ld: (.text+0x23b4): undefined reference to `__udivdi3'

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