tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 449dc8c97089a6e09fb2dac4d92b1b7ac0eb7c1e commit: 742a265accd3e3afcc8e7b17f409c93c1de8be85 powerpc/fadump: register kernel metadata address with opal date: 11 months ago config: powerpc64-randconfig-s032-20200808 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-118-ge1578773-dirty git checkout 742a265accd3e3afcc8e7b17f409c93c1de8be85 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) arch/powerpc/platforms/powernv/opal-fadump.c:43:33: sparse: sparse: incorrect type in assignment (different base types) @@ expected restricted __be64 [usertype] size @@ got unsigned long boot_memory_size @@ arch/powerpc/platforms/powernv/opal-fadump.c:43:33: sparse: got unsigned long boot_memory_size vim +42 arch/powerpc/platforms/powernv/opal-fadump.c 32 33 static u64 opal_fadump_init_mem_struct(struct fw_dump *fadump_conf) 34 { 35 u64 addr = fadump_conf->reserve_dump_area_start; 36 37 opal_fdm = __va(fadump_conf->kernel_metadata); 38 opal_fadump_init_metadata(opal_fdm); 39 40 opal_fdm->region_cnt = 1; 41 opal_fdm->rgn[0].src = 0; 44 addr += fadump_conf->boot_memory_size; 45 46 /* 47 * Kernel metadata is passed to f/w and retrieved in capture kerenl. 48 * So, use it to save fadump header address instead of calculating it. 49 */ 51 fadump_conf->boot_memory_size); 52 53 return addr; 54 } 55 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org