Hi Christophe, I love your patch! Yet something to improve: [auto build test ERROR on tip/sched/core] [also build test ERROR on linus/master v5.17-rc2] [cannot apply to hnaz-mm/master next-20220202] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Christophe-Leroy/mm-kasan-Add-CONFIG_KASAN_SOFTWARE/20220202-164612 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git ec2444530612a886b406e2830d7f314d1a07d4bb config: x86_64-randconfig-a013-20220131 (https://download.01.org/0day-ci/archive/20220202/202202022149.BRH60mXN-lkp@xxxxxxxxx/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6b1e844b69f15bb7dffaf9365cd2b355d2eb7579) 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 # https://github.com/0day-ci/linux/commit/29c1001f88c380ea391fa5520f2ddcce35e35681 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Christophe-Leroy/mm-kasan-Add-CONFIG_KASAN_SOFTWARE/20220202-164612 git checkout 29c1001f88c380ea391fa5520f2ddcce35e35681 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from arch/x86/boot/compressed/cmdline.c:2: In file included from arch/x86/boot/compressed/misc.h:32: In file included from include/linux/acpi.h:14: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:136: >> include/linux/kasan.h:56:41: error: use of undeclared identifier 'KASAN_SHADOW_SCALE_SHIFT' return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT) ^ >> include/linux/kasan.h:57:5: error: use of undeclared identifier 'KASAN_SHADOW_OFFSET' + KASAN_SHADOW_OFFSET; ^ 2 errors generated. -- In file included from arch/x86/boot/compressed/pgtable_64.c:2: In file included from arch/x86/boot/compressed/misc.h:32: In file included from include/linux/acpi.h:14: In file included from include/linux/resource_ext.h:11: In file included from include/linux/slab.h:136: >> include/linux/kasan.h:56:41: error: use of undeclared identifier 'KASAN_SHADOW_SCALE_SHIFT' return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT) ^ >> include/linux/kasan.h:57:5: error: use of undeclared identifier 'KASAN_SHADOW_OFFSET' + KASAN_SHADOW_OFFSET; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:97:11: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set->sig[3] | set->sig[2] | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:97:25: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set->sig[3] | set->sig[2] | ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:98:4: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] set->sig[1] | set->sig[0]) == 0; ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:100:11: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set->sig[1] | set->sig[0]) == 0; ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:113:11: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set1->sig[3] == set2->sig[3]) && ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:113:27: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] return (set1->sig[3] == set2->sig[3]) && ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:114:5: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] (set1->sig[2] == set2->sig[2]) && ^ ~ arch/x86/include/asm/signal.h:24:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/x86/boot/compressed/pgtable_64.c:3: In file included from include/linux/efi.h:19: In file included from include/linux/proc_fs.h:10: In file included from include/linux/fs.h:33: In file included from include/linux/percpu-rwsem.h:7: In file included from include/linux/rcuwait.h:6: In file included from include/linux/sched/signal.h:6: vim +/KASAN_SHADOW_SCALE_SHIFT +56 include/linux/kasan.h 69786cdb379bbc Andrey Ryabinin 2015-08-13 50 9577dd74864877 Andrey Konovalov 2018-12-28 51 int kasan_populate_early_shadow(const void *shadow_start, 69786cdb379bbc Andrey Ryabinin 2015-08-13 52 const void *shadow_end); 69786cdb379bbc Andrey Ryabinin 2015-08-13 53 0b24becc810dc3 Andrey Ryabinin 2015-02-13 54 static inline void *kasan_mem_to_shadow(const void *addr) 0b24becc810dc3 Andrey Ryabinin 2015-02-13 55 { 0b24becc810dc3 Andrey Ryabinin 2015-02-13 @56 return (void *)((unsigned long)addr >> KASAN_SHADOW_SCALE_SHIFT) 0b24becc810dc3 Andrey Ryabinin 2015-02-13 @57 + KASAN_SHADOW_OFFSET; 0b24becc810dc3 Andrey Ryabinin 2015-02-13 58 } 0b24becc810dc3 Andrey Ryabinin 2015-02-13 59 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx