Hi Elena, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on arm64/for-next/core] [also build test WARNING on v5.11-rc3 next-20210115] [cannot apply to kvmarm/next soc/for-next arm/for-next xlnx/master] [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/Elena-Petrova/UBSan-Enablement-for-hyp-nVHE-code/20210115-112509 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/9eaabf22215aee1257362a608a15658c558d7fe5 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Elena-Petrova/UBSan-Enablement-for-hyp-nVHE-code/20210115-112509 git checkout 9eaabf22215aee1257362a608a15658c558d7fe5 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): arch/arm64/kvm/hyp/nvhe/ubsan.c:10:6: warning: no previous prototype for '__ubsan_handle_add_overflow' [-Wmissing-prototypes] 10 | void __ubsan_handle_add_overflow(void *_data, void *lhs, void *rhs) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:12:6: warning: no previous prototype for '__ubsan_handle_sub_overflow' [-Wmissing-prototypes] 12 | void __ubsan_handle_sub_overflow(void *_data, void *lhs, void *rhs) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:14:6: warning: no previous prototype for '__ubsan_handle_mul_overflow' [-Wmissing-prototypes] 14 | void __ubsan_handle_mul_overflow(void *_data, void *lhs, void *rhs) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:16:6: warning: no previous prototype for '__ubsan_handle_negate_overflow' [-Wmissing-prototypes] 16 | void __ubsan_handle_negate_overflow(void *_data, void *old_val) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:18:6: warning: no previous prototype for '__ubsan_handle_divrem_overflow' [-Wmissing-prototypes] 18 | void __ubsan_handle_divrem_overflow(void *_data, void *lhs, void *rhs) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:20:6: warning: no previous prototype for '__ubsan_handle_type_mismatch' [-Wmissing-prototypes] 20 | void __ubsan_handle_type_mismatch(struct type_mismatch_data *data, void *ptr) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> arch/arm64/kvm/hyp/nvhe/ubsan.c:22:6: warning: no previous prototype for '__ubsan_handle_type_mismatch_v1' [-Wmissing-prototypes] 22 | void __ubsan_handle_type_mismatch_v1(void *_data, void *ptr) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:24:6: warning: no previous prototype for '__ubsan_handle_out_of_bounds' [-Wmissing-prototypes] 24 | void __ubsan_handle_out_of_bounds(void *_data, void *index) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:26:6: warning: no previous prototype for '__ubsan_handle_shift_out_of_bounds' [-Wmissing-prototypes] 26 | void __ubsan_handle_shift_out_of_bounds(void *_data, void *lhs, void *rhs) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:28:6: warning: no previous prototype for '__ubsan_handle_builtin_unreachable' [-Wmissing-prototypes] 28 | void __ubsan_handle_builtin_unreachable(void *_data) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kvm/hyp/nvhe/ubsan.c:30:6: warning: no previous prototype for '__ubsan_handle_load_invalid_value' [-Wmissing-prototypes] 30 | void __ubsan_handle_load_invalid_value(void *_data, void *val) {} | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/__ubsan_handle_type_mismatch_v1 +22 arch/arm64/kvm/hyp/nvhe/ubsan.c 21 > 22 void __ubsan_handle_type_mismatch_v1(void *_data, void *ptr) {} 23 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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