Hi Andrii, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Andrii-Nakryiko/bpf-log-PTR_TO_MEM-memory-size-in-verifier-log/20231205-074451 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20231204233931.49758-9-andrii%40kernel.org patch subject: [PATCH bpf-next 08/13] bpf: move subprog call logic back to verifier.c config: x86_64-randconfig-004-20231205 (https://download.01.org/0day-ci/archive/20231205/202312051900.XRWfHJW0-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231205/202312051900.XRWfHJW0-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312051900.XRWfHJW0-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/bpf/verifier.c:5083:5: warning: no previous prototype for function 'check_ptr_off_reg' [-Wmissing-prototypes] int check_ptr_off_reg(struct bpf_verifier_env *env, ^ kernel/bpf/verifier.c:5083:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int check_ptr_off_reg(struct bpf_verifier_env *env, ^ static >> kernel/bpf/verifier.c:7268:5: warning: no previous prototype for function 'check_mem_reg' [-Wmissing-prototypes] int check_mem_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg, ^ kernel/bpf/verifier.c:7268:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int check_mem_reg(struct bpf_verifier_env *env, struct bpf_reg_state *reg, ^ static >> kernel/bpf/verifier.c:8254:5: warning: no previous prototype for function 'check_func_arg_reg_off' [-Wmissing-prototypes] int check_func_arg_reg_off(struct bpf_verifier_env *env, ^ kernel/bpf/verifier.c:8254:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int check_func_arg_reg_off(struct bpf_verifier_env *env, ^ static 3 warnings generated. vim +/check_ptr_off_reg +5083 kernel/bpf/verifier.c e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 5082 e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 @5083 int check_ptr_off_reg(struct bpf_verifier_env *env, e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 5084 const struct bpf_reg_state *reg, int regno) e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 5085 { e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 5086 return __check_ptr_off_reg(env, reg, regno, false); e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 5087 } e9147b4422e1f3 Kumar Kartikeya Dwivedi 2022-04-15 5088 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
