Hi Andrey, FYI, the error/warning still remains. tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.10-m2107 head: 6b5101a5720784d91a53168bfbc90c940ee6817f commit: f4fb11566b5eb19aa91f674123a365854ab1470f [1559/8698] UPSTREAM: kasan: shadow declarations only for software modes config: s390-allyesconfig (https://download.01.org/0day-ci/archive/20220108/202201080319.dgPwSoQr-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 11.2.0 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/ammarfaizi2/linux-block/commit/f4fb11566b5eb19aa91f674123a365854ab1470f git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-5.10-m2107 git checkout f4fb11566b5eb19aa91f674123a365854ab1470f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 SHELL=/bin/bash arch/s390/mm/ lib/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from include/linux/kasan.h:15, from arch/s390/mm/kasan_init.c:2: arch/s390/include/asm/kasan.h:20:31: error: unknown type name 'pgd_t'; did you mean 'pid_t'? 20 | extern void kasan_copy_shadow(pgd_t *dst); | ^~~~~ | pid_t >> arch/s390/mm/kasan_init.c:419:13: warning: no previous prototype for 'kasan_copy_shadow' [-Wmissing-prototypes] 419 | void __init kasan_copy_shadow(pgd_t *pg_dir) | ^~~~~~~~~~~~~~~~~ Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for WIRELESS_EXT Depends on NET && WIRELESS Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for WEXT_CORE Depends on NET && WIRELESS && (CFG80211_WEXT || WIRELESS_EXT Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for WEXT_PROC Depends on NET && WIRELESS && PROC_FS && WEXT_CORE Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for WEXT_PRIV Depends on NET && WIRELESS Selected by - GKI_LEGACY_WEXT_ALLCONFIG WARNING: unmet direct dependencies detected for WEXT_SPY Depends on NET && WIRELESS Selected by - GKI_LEGACY_WEXT_ALLCONFIG vim +/kasan_copy_shadow +419 arch/s390/mm/kasan_init.c 42db5ed86090d8 Vasily Gorbik 2017-11-17 418 42db5ed86090d8 Vasily Gorbik 2017-11-17 @419 void __init kasan_copy_shadow(pgd_t *pg_dir) 42db5ed86090d8 Vasily Gorbik 2017-11-17 420 { 42db5ed86090d8 Vasily Gorbik 2017-11-17 421 /* 42db5ed86090d8 Vasily Gorbik 2017-11-17 422 * At this point we are still running on early pages setup early_pg_dir, 42db5ed86090d8 Vasily Gorbik 2017-11-17 423 * while swapper_pg_dir has just been initialized with identity mapping. 42db5ed86090d8 Vasily Gorbik 2017-11-17 424 * Carry over shadow memory region from early_pg_dir to swapper_pg_dir. 42db5ed86090d8 Vasily Gorbik 2017-11-17 425 */ 42db5ed86090d8 Vasily Gorbik 2017-11-17 426 42db5ed86090d8 Vasily Gorbik 2017-11-17 427 pgd_t *pg_dir_src; 42db5ed86090d8 Vasily Gorbik 2017-11-17 428 pgd_t *pg_dir_dst; 42db5ed86090d8 Vasily Gorbik 2017-11-17 429 p4d_t *p4_dir_src; 42db5ed86090d8 Vasily Gorbik 2017-11-17 430 p4d_t *p4_dir_dst; 42db5ed86090d8 Vasily Gorbik 2017-11-17 431 pud_t *pu_dir_src; 42db5ed86090d8 Vasily Gorbik 2017-11-17 432 pud_t *pu_dir_dst; 42db5ed86090d8 Vasily Gorbik 2017-11-17 433 42db5ed86090d8 Vasily Gorbik 2017-11-17 434 pg_dir_src = pgd_offset_raw(early_pg_dir, KASAN_SHADOW_START); 42db5ed86090d8 Vasily Gorbik 2017-11-17 435 pg_dir_dst = pgd_offset_raw(pg_dir, KASAN_SHADOW_START); 42db5ed86090d8 Vasily Gorbik 2017-11-17 436 p4_dir_src = p4d_offset(pg_dir_src, KASAN_SHADOW_START); 42db5ed86090d8 Vasily Gorbik 2017-11-17 437 p4_dir_dst = p4d_offset(pg_dir_dst, KASAN_SHADOW_START); 42db5ed86090d8 Vasily Gorbik 2017-11-17 438 if (!p4d_folded(*p4_dir_src)) { 42db5ed86090d8 Vasily Gorbik 2017-11-17 439 /* 4 level paging */ 42db5ed86090d8 Vasily Gorbik 2017-11-17 440 memcpy(p4_dir_dst, p4_dir_src, 42db5ed86090d8 Vasily Gorbik 2017-11-17 441 (KASAN_SHADOW_SIZE >> P4D_SHIFT) * sizeof(p4d_t)); 42db5ed86090d8 Vasily Gorbik 2017-11-17 442 return; 42db5ed86090d8 Vasily Gorbik 2017-11-17 443 } 42db5ed86090d8 Vasily Gorbik 2017-11-17 444 /* 3 level paging */ 42db5ed86090d8 Vasily Gorbik 2017-11-17 445 pu_dir_src = pud_offset(p4_dir_src, KASAN_SHADOW_START); 42db5ed86090d8 Vasily Gorbik 2017-11-17 446 pu_dir_dst = pud_offset(p4_dir_dst, KASAN_SHADOW_START); 42db5ed86090d8 Vasily Gorbik 2017-11-17 447 memcpy(pu_dir_dst, pu_dir_src, 42db5ed86090d8 Vasily Gorbik 2017-11-17 448 (KASAN_SHADOW_SIZE >> PUD_SHIFT) * sizeof(pud_t)); 42db5ed86090d8 Vasily Gorbik 2017-11-17 449 } 135ff163939294 Vasily Gorbik 2017-11-20 450 :::::: The code at line 419 was first introduced by commit :::::: 42db5ed86090d8e57ca08bfd162a10be6320cc49 s390/kasan: add initialization code and enable it :::::: TO: Vasily Gorbik <gor@xxxxxxxxxxxxx> :::::: CC: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
