Hi Peter, I love your patch! Yet something to improve: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on next-20220722] [cannot apply to kvmarm/next arm/for-next soc/for-next xilinx-xlnx/master linus/master v5.19-rc7] [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/Peter-Collingbourne/KVM-arm64-permit-MAP_SHARED-mappings-with-MTE-enabled/20220722-095300 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: arm64-buildonly-randconfig-r004-20220722 (https://download.01.org/0day-ci/archive/20220724/202207240907.aR4gvNkj-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 72686d68c137551cce816416190a18d45b4d4e2a) 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/3323e416892d6b5326503b9afc2ee835162b819b git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Peter-Collingbourne/KVM-arm64-permit-MAP_SHARED-mappings-with-MTE-enabled/20220722-095300 git checkout 3323e416892d6b5326503b9afc2ee835162b819b # 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 prepare If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> 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: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:9: In file included from include/linux/sched/task.h:11: In file included from include/linux/uaccess.h:11: In file included from arch/arm64/include/asm/uaccess.h:24: >> arch/arm64/include/asm/mte.h:80:15: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int] static inline set_page_mte_tagged(struct page *page) ~~~~~~~~~~~~~ ^ int In file included from arch/arm64/kernel/asm-offsets.c:12: In file included from include/linux/kexec.h:31: include/linux/compat.h:456:22: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/arm64/kernel/asm-offsets.c:12: In file included from include/linux/kexec.h:31: include/linux/compat.h:456:10: warning: array index 7 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:456:42: warning: array index 6 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:456:53: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds] case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3]; ^ ~ include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/arm64/kernel/asm-offsets.c:12: In file included from include/linux/kexec.h:31: include/linux/compat.h:458:22: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/arm64/kernel/asm-offsets.c:12: In file included from include/linux/kexec.h:31: include/linux/compat.h:458:10: warning: array index 5 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:458:42: warning: array index 4 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:458:53: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds] case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2]; ^ ~ include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/arm64/kernel/asm-offsets.c:12: In file included from include/linux/kexec.h:31: include/linux/compat.h:460:22: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ In file included from arch/arm64/kernel/asm-offsets.c:12: In file included from include/linux/kexec.h:31: include/linux/compat.h:460:10: warning: array index 3 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:460:42: warning: array index 2 is past the end of the array (which contains 2 elements) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ include/linux/compat.h:131:2: note: array 'sig' declared here compat_sigset_word sig[_COMPAT_NSIG_WORDS]; ^ include/linux/compat.h:460:53: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds] case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1]; ^ ~ include/uapi/asm-generic/signal.h:62:2: note: array 'sig' declared here unsigned long sig[_NSIG_WORDS]; ^ 12 warnings and 1 error generated. make[2]: *** [scripts/Makefile.build:117: arch/arm64/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1200: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:219: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/int +80 arch/arm64/include/asm/mte.h 79 > 80 static inline set_page_mte_tagged(struct page *page) 81 { 82 } 83 static inline bool page_mte_tagged(struct page *page) 84 { 85 return false; 86 } 87 static inline void mte_zero_clear_page_tags(void *addr) 88 { 89 } 90 static inline void mte_sync_tags(pte_t old_pte, pte_t pte) 91 { 92 } 93 static inline void mte_copy_page_tags(void *kto, const void *kfrom) 94 { 95 } 96 static inline void mte_thread_init_user(void) 97 { 98 } 99 static inline void mte_thread_switch(struct task_struct *next) 100 { 101 } 102 static inline void mte_suspend_enter(void) 103 { 104 } 105 static inline long set_mte_ctrl(struct task_struct *task, unsigned long arg) 106 { 107 return 0; 108 } 109 static inline long get_mte_ctrl(struct task_struct *task) 110 { 111 return 0; 112 } 113 static inline int mte_ptrace_copy_tags(struct task_struct *child, 114 long request, unsigned long addr, 115 unsigned long data) 116 { 117 return -EIO; 118 } 119 -- 0-DAY CI Kernel Test Service https://01.org/lkp
