tree: https://github.com/rgushchin/linux.git memcg_from_obj head: 95947362cc70e25deb2b5833a1bfb61b75018bcc commit: c233c4abd11817ceb7998d4e6d7440bea52d4c69 [160/221] a config: m68k-multi_defconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 7.5.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout c233c4abd11817ceb7998d4e6d7440bea52d4c69 # save the attached .config to linux build tree GCC_VERSION=7.5.0 make.cross ARCH=m68k If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): arch/m68k/mac/config.o: In function `config_mac': config.c:(.init.text+0x49a): undefined reference to `find_via_pmu' arch/m68k/mac/misc.o: In function `mac_reset': misc.c:(.text+0x1d4): undefined reference to `pmu_restart' arch/m68k/mac/misc.o: In function `mac_pram_read_byte': misc.c:(.text+0x33a): undefined reference to `pmu_request' misc.c:(.text+0x34a): undefined reference to `pmu_wait_complete' arch/m68k/mac/misc.o: In function `mac_pram_write_byte': misc.c:(.text+0x458): undefined reference to `pmu_request' misc.c:(.text+0x468): undefined reference to `pmu_wait_complete' arch/m68k/mac/misc.o: In function `mac_poweroff': misc.c:(.text+0x588): undefined reference to `pmu_shutdown' arch/m68k/mac/misc.o: In function `mac_hwclk': misc.c:(.text+0x7fe): undefined reference to `pmu_get_time' misc.c:(.text+0xa58): undefined reference to `pmu_set_rtc_time' drivers/macintosh/via-pmu-event.o: In function `via_pmu_event_init': >> via-pmu-event.c:(.init.text+0x4): undefined reference to `pmu_get_model' drivers/macintosh/adb.o:(.rodata+0x8c): undefined reference to `via_pmu_driver' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org Intel Corporation