tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y head: 610bdbf6a174c9a91e34e276a9594114b44bef74 commit: b6f69f72c15d7f973f5709c5351f378f235b3654 [1441/2773] mm: don't rely on system state to detect hot-plug operations config: x86_64-randconfig-a001-20210110 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project bc556e5685c0f97e79fb7b3c6f15cc5062db8e36) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=b6f69f72c15d7f973f5709c5351f378f235b3654 git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git git fetch --no-tags linux-stable-rc linux-4.19.y git checkout b6f69f72c15d7f973f5709c5351f378f235b3654 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/base/node.c:429:5: warning: no previous prototype for function 'register_mem_block_under_node_early' [-Wmissing-prototypes] int register_mem_block_under_node_early(struct memory_block *mem_blk, void *arg) ^ drivers/base/node.c:429:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int register_mem_block_under_node_early(struct memory_block *mem_blk, void *arg) ^ static 1 warning generated. vim +/register_mem_block_under_node_early +429 drivers/base/node.c 427 428 /* register memory section under specified node if it spans that node */ > 429 int register_mem_block_under_node_early(struct memory_block *mem_blk, void *arg) 430 { 431 int nid = *(int *)arg; 432 unsigned long pfn, sect_start_pfn, sect_end_pfn; 433 434 sect_start_pfn = section_nr_to_pfn(mem_blk->start_section_nr); 435 sect_end_pfn = section_nr_to_pfn(mem_blk->end_section_nr); 436 sect_end_pfn += PAGES_PER_SECTION - 1; 437 for (pfn = sect_start_pfn; pfn <= sect_end_pfn; pfn++) { 438 int page_nid; 439 440 /* 441 * memory block could have several absent sections from start. 442 * skip pfn range from absent section 443 */ 444 if (!pfn_present(pfn)) { 445 pfn = round_down(pfn + PAGES_PER_SECTION, 446 PAGES_PER_SECTION) - 1; 447 continue; 448 } 449 450 /* 451 * We need to check if page belongs to nid only at the boot 452 * case because node's ranges can be interleaved. 453 */ 454 page_nid = get_nid_for_pfn(pfn); 455 if (page_nid < 0) 456 continue; 457 if (page_nid != nid) 458 continue; 459 460 return do_register_memory_block_under_node(nid, mem_blk); 461 } 462 /* mem section does not span the specified node */ 463 return 0; 464 } 465 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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