Hi Vadim, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Vadim-Fedorenko/bpf-add-bpf_get_cpu_time_counter-kfunc/20241125-122255 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20241123005833.810044-3-vadfed%40meta.com patch subject: [PATCH bpf-next v9 2/4] bpf: add bpf_cpu_time_counter_to_ns helper config: x86_64-randconfig-104-20241127 (https://download.01.org/0day-ci/archive/20241128/202411280258.urOdkuWz-lkp@xxxxxxxxx/config) compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241128/202411280258.urOdkuWz-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/202411280258.urOdkuWz-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: bpf_cpu_time_counter_to_ns >>> referenced by bpf_jit_comp.c:0 (arch/x86/net/bpf_jit_comp.c:0) >>> vmlinux.o:(do_jit) >>> referenced by bpf_jit_comp.c:3855 (arch/x86/net/bpf_jit_comp.c:3855) >>> vmlinux.o:(bpf_jit_inlines_kfunc_call) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki