Hi Nhat, Thank you for the patch! Yet something to improve: [auto build test ERROR on shuah-kselftest/next] [also build test ERROR on akpm-mm/mm-everything linus/master v6.1 next-20221216] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Nhat-Pham/cachestat-a-new-syscall-for-page-cache-state-of-files/20221217-032254 base: https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next patch link: https://lore.kernel.org/r/20221216192149.3902877-4-nphamcs%40gmail.com patch subject: [PATCH v4 3/4] cachestat: implement cachestat syscall config: s390-allmodconfig compiler: s390-linux-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/85fdb04584b3d9a3b90d2c63794ec65e8d996b18 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Nhat-Pham/cachestat-a-new-syscall-for-page-cache-state-of-files/20221217-032254 git checkout 85fdb04584b3d9a3b90d2c63794ec65e8d996b18 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash arch/s390/kvm/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All error/warnings (new ones prefixed by >>): In file included from include/uapi/asm-generic/mman.h:5, from ./arch/s390/include/generated/uapi/asm/mman.h:1, from include/uapi/linux/mman.h:5, from include/linux/fs.h:49, from include/linux/huge_mm.h:8, from include/linux/mm.h:737, from include/linux/kvm_host.h:16, from arch/s390/kvm/kvm-s390.h:17, from arch/s390/kvm/gaccess.c:16: >> include/uapi/asm-generic/mman-common.h:16:25: error: expected identifier before numeric constant 16 | #define PROT_NONE 0x0 /* page can not be accessed */ | ^~~ arch/s390/kvm/gaccess.c:493:9: note: in expansion of macro 'PROT_NONE' 493 | PROT_NONE, | ^~~~~~~~~ arch/s390/kvm/gaccess.c: In function 'trans_exc_ending': >> arch/s390/kvm/gaccess.c:516:17: error: duplicate case value 516 | case PROT_TYPE_LA: | ^~~~ arch/s390/kvm/gaccess.c:509:17: note: previously used here 509 | case PROT_NONE: | ^~~~ In file included from include/linux/compiler_types.h:79, from : >> include/linux/compiler_attributes.h:223:41: warning: attribute 'fallthrough' not preceding a case label or default label 223 | # define fallthrough __attribute__((__fallthrough__)) | ^~~~~~~~~~~~~ arch/s390/kvm/gaccess.c:515:25: note: in expansion of macro 'fallthrough' 515 | fallthrough; | ^~~~~~~~~~~ vim +16 include/uapi/asm-generic/mman-common.h 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 9 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 10 #define PROT_READ 0x1 /* page can be read */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 11 #define PROT_WRITE 0x2 /* page can be written */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 12 #define PROT_EXEC 0x4 /* page can be executed */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 13 #define PROT_SEM 0x8 /* page may be used for atomic ops */ d41938d2cbee92 include/uapi/asm-generic/mman-common.h Dave Martin 2019-12-11 14 /* 0x10 reserved for arch-specific use */ d41938d2cbee92 include/uapi/asm-generic/mman-common.h Dave Martin 2019-12-11 15 /* 0x20 reserved for arch-specific use */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 @16 #define PROT_NONE 0x0 /* page can not be accessed */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 17 #define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 18 #define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ 5f6164f3092832 include/asm-generic/mman.h Michael S. Tsirkin 2006-02-15 19 -- 0-DAY CI Kernel Test Service https://01.org/lkp