tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git memblock/iterators-cleanup/v3 head: 79aa683bcd0cf3e183949d9bcf5ec4052e65f74d commit: 1c93b140be9943b8bf966dfb1dc20446003db166 [12/17] arch, drivers: replace for_each_membock() with for_each_mem_range() config: arm-randconfig-r016-20200810 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 3a34228bff6fdf45b50cb57cf5fb85d659eeb672) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git checkout 1c93b140be9943b8bf966dfb1dc20446003db166 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang 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 errors (new ones prefixed by >>): for_each_mem_range(i, &reg_start, &reg_end) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:212:2: note: expanded from macro 'for_each_mem_range' __for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:178:31: note: expanded from macro '__for_each_mem_range' for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \ ^~ include/linux/memblock.h:125:28: note: passing argument to parameter 'idx' here void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, ^ for_each_mem_range(i, &reg_start, &reg_end) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:212:2: note: expanded from macro 'for_each_mem_range' __for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:181:24: note: expanded from macro '__for_each_mem_range' __next_mem_range(&i, nid, flags, type_a, type_b, \ ^~ include/linux/memblock.h:125:28: note: passing argument to parameter 'idx' here void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, ^ mem_end = reg_end ^ ; 3 errors generated. -- for_each_mem_range(i, &reg_start, &reg_end) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:212:2: note: expanded from macro 'for_each_mem_range' __for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:178:31: note: expanded from macro '__for_each_mem_range' for (i = 0, __next_mem_range(&i, nid, flags, type_a, type_b, \ ^~ include/linux/memblock.h:125:28: note: passing argument to parameter 'idx' here void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, ^ for_each_mem_range(i, &reg_start, &reg_end) { ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:212:2: note: expanded from macro 'for_each_mem_range' __for_each_mem_range(i, &memblock.memory, NULL, NUMA_NO_NODE, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/memblock.h:181:24: note: expanded from macro '__for_each_mem_range' __next_mem_range(&i, nid, flags, type_a, type_b, \ ^~ include/linux/memblock.h:125:28: note: passing argument to parameter 'idx' here void __next_mem_range(u64 *idx, int nid, enum memblock_flags flags, ^ 2 errors generated. vim +264 arch/arm/mm/pmsa-v7.c 263 265 if (i == 0) { 266 phys_addr_t phys_offset = PHYS_OFFSET; 267 268 /* 269 * Initially only use memory continuous from 270 * PHYS_OFFSET */ 271 if (reg_start != phys_offset) 272 panic("First memory bank must be contiguous from PHYS_OFFSET"); 273 274 mem_start = reg_start; 276 specified_mem_size = mem_end - mem_start; 277 } else { 278 /* 279 * memblock auto merges contiguous blocks, remove 280 * all blocks afterwards in one go (we can't remove 281 * blocks separately while iterating) 282 */ 283 pr_notice("Ignoring RAM after %pa, memory at %pa ignored\n", 284 &mem_end, &reg_start); 285 memblock_remove(reg_start, 0 - reg_start); 286 break; 287 } 288 } 289 290 memset(mem, 0, sizeof(mem)); 291 num = allocate_region(mem_start, specified_mem_size, mem_max_regions, mem); 292 293 for (i = 0; i < num; i++) { 294 unsigned long subreg = mem[i].size / PMSAv7_NR_SUBREGS; 295 296 total_mem_size += mem[i].size - subreg * hweight_long(mem[i].subreg); 297 298 pr_debug("MPU: base %pa size %pa disable subregions: %*pbl\n", 299 &mem[i].base, &mem[i].size, PMSAv7_NR_SUBREGS, &mem[i].subreg); 300 } 301 302 if (total_mem_size != specified_mem_size) { 303 pr_warn("Truncating memory from %pa to %pa (MPU region constraints)", 304 &specified_mem_size, &total_mem_size); 305 memblock_remove(mem_start + total_mem_size, 306 specified_mem_size - total_mem_size); 307 } 308 } 309 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org