tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git memblock/iterators-cleanup/v3 head: 79aa683bcd0cf3e183949d9bcf5ec4052e65f74d commit: 7789989658c56ecad52d9978c39c1a57c36af603 [16/17] memblock: implement for_each_reserved_mem_region() using __next_mem_region() config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-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 7789989658c56ecad52d9978c39c1a57c36af603 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>, old ones prefixed by <<): The function memblock_find_in_range_node() references the function __meminit __next_mem_range(). This is often because memblock_find_in_range_node lacks a __meminit annotation or the annotation of __next_mem_range is wrong. -- The function gic_check_reserved_range() references the function __meminit __next_mem_range(). This is often because gic_check_reserved_range lacks a __meminit annotation or the annotation of __next_mem_range is wrong. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org