tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 303392fd5c160822bf778270b28ec5ea50cab2b4 commit: b659baea75469f0c5bd26f18461dfcdc1bbbac82 mm: selftests for exclusive device memory date: 2 days ago config: x86_64-randconfig-a006-20210704 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project cb5de7c813f976dd458bd2a7f40702ba648bf650) 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/torvalds/linux.git/commit/?id=b659baea75469f0c5bd26f18461dfcdc1bbbac82 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b659baea75469f0c5bd26f18461dfcdc1bbbac82 # 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 >>): >> lib/test_hmm.c:631:16: warning: variable 'page' set but not used [-Wunused-but-set-variable] struct page *page; ^ 1 warning generated. vim +/page +631 lib/test_hmm.c 623 624 static int dmirror_check_atomic(struct dmirror *dmirror, unsigned long start, 625 unsigned long end) 626 { 627 unsigned long pfn; 628 629 for (pfn = start >> PAGE_SHIFT; pfn < (end >> PAGE_SHIFT); pfn++) { 630 void *entry; > 631 struct page *page; 632 633 entry = xa_load(&dmirror->pt, pfn); 634 page = xa_untag_pointer(entry); 635 if (xa_pointer_tag(entry) == DPT_XA_TAG_ATOMIC) 636 return -EPERM; 637 } 638 639 return 0; 640 } 641 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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