Hi Nhat, Thank you for the patch! Yet something to improve: [auto build test ERROR on shuah-kselftest/next] [also build test ERROR on shuah-kselftest/fixes tip/x86/asm 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: arm64-randconfig-r035-20221216 compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 98b13979fb05f3ed288a900deb843e7b27589e58) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # 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=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 prepare If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): In file included from arch/arm64/kernel/asm-offsets.c:10: In file included from include/linux/arm_sdei.h:8: In file included from include/acpi/ghes.h:5: In file included from include/acpi/apei.h:9: In file included from include/linux/acpi.h:15: In file included from include/linux/device.h:32: In file included from include/linux/device/driver.h:21: In file included from include/linux/module.h:19: In file included from include/linux/elf.h:6: In file included from arch/arm64/include/asm/elf.h:141: In file included from include/linux/fs.h:49: In file included from include/uapi/linux/mman.h:5: >> arch/arm64/include/asm/mman.h:15:10: error: use of undeclared identifier 'VM_ARM64_BTI' ret |= VM_ARM64_BTI; ^ >> arch/arm64/include/asm/mman.h:18:10: error: use of undeclared identifier 'VM_MTE' ret |= VM_MTE; ^ >> arch/arm64/include/asm/mman.h:32:10: error: use of undeclared identifier 'VM_MTE_ALLOWED' return VM_MTE_ALLOWED; ^ arch/arm64/include/asm/mman.h:59:22: error: use of undeclared identifier 'VM_MTE' return !(vm_flags & VM_MTE) || (vm_flags & VM_MTE_ALLOWED); ^ arch/arm64/include/asm/mman.h:59:45: error: use of undeclared identifier 'VM_MTE_ALLOWED' return !(vm_flags & VM_MTE) || (vm_flags & VM_MTE_ALLOWED); ^ 5 errors generated. make[2]: *** [scripts/Makefile.build:118: arch/arm64/kernel/asm-offsets.s] Error 1 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:1270: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:231: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/VM_ARM64_BTI +15 arch/arm64/include/asm/mman.h 8ef8f360cf30be Dave Martin 2020-03-16 8 8ef8f360cf30be Dave Martin 2020-03-16 9 static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot, 8ef8f360cf30be Dave Martin 2020-03-16 10 unsigned long pkey __always_unused) 8ef8f360cf30be Dave Martin 2020-03-16 11 { 9f3419315f3cdc Catalin Marinas 2019-11-27 12 unsigned long ret = 0; 9f3419315f3cdc Catalin Marinas 2019-11-27 13 8ef8f360cf30be Dave Martin 2020-03-16 14 if (system_supports_bti() && (prot & PROT_BTI)) 9f3419315f3cdc Catalin Marinas 2019-11-27 @15 ret |= VM_ARM64_BTI; 8ef8f360cf30be Dave Martin 2020-03-16 16 9f3419315f3cdc Catalin Marinas 2019-11-27 17 if (system_supports_mte() && (prot & PROT_MTE)) 9f3419315f3cdc Catalin Marinas 2019-11-27 @18 ret |= VM_MTE; 9f3419315f3cdc Catalin Marinas 2019-11-27 19 9f3419315f3cdc Catalin Marinas 2019-11-27 20 return ret; 8ef8f360cf30be Dave Martin 2020-03-16 21 } 8ef8f360cf30be Dave Martin 2020-03-16 22 #define arch_calc_vm_prot_bits(prot, pkey) arch_calc_vm_prot_bits(prot, pkey) 8ef8f360cf30be Dave Martin 2020-03-16 23 9f3419315f3cdc Catalin Marinas 2019-11-27 24 static inline unsigned long arch_calc_vm_flag_bits(unsigned long flags) 9f3419315f3cdc Catalin Marinas 2019-11-27 25 { 9f3419315f3cdc Catalin Marinas 2019-11-27 26 /* 9f3419315f3cdc Catalin Marinas 2019-11-27 27 * Only allow MTE on anonymous mappings as these are guaranteed to be 9f3419315f3cdc Catalin Marinas 2019-11-27 28 * backed by tags-capable memory. The vm_flags may be overridden by a 9f3419315f3cdc Catalin Marinas 2019-11-27 29 * filesystem supporting MTE (RAM-based). 9f3419315f3cdc Catalin Marinas 2019-11-27 30 */ 9f3419315f3cdc Catalin Marinas 2019-11-27 31 if (system_supports_mte() && (flags & MAP_ANONYMOUS)) 9f3419315f3cdc Catalin Marinas 2019-11-27 @32 return VM_MTE_ALLOWED; 9f3419315f3cdc Catalin Marinas 2019-11-27 33 9f3419315f3cdc Catalin Marinas 2019-11-27 34 return 0; 9f3419315f3cdc Catalin Marinas 2019-11-27 35 } 9f3419315f3cdc Catalin Marinas 2019-11-27 36 #define arch_calc_vm_flag_bits(flags) arch_calc_vm_flag_bits(flags) 9f3419315f3cdc Catalin Marinas 2019-11-27 37 -- 0-DAY CI Kernel Test Service https://01.org/lkp