Hi Kui-Feng, 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/Kui-Feng-Lee/bpf-enable-the-open-operator-on-a-pinned-path-of-a-struct_osp-link/20240417-082736 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20240417002513.1534535-2-thinker.li%40gmail.com patch subject: [PATCH bpf-next 1/2] bpf: enable the "open" operator on a pinned path of a struct_osp link. config: riscv-defconfig (https://download.01.org/0day-ci/archive/20240418/202404180747.NXWUtZTG-lkp@xxxxxxxxx/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 7089c359a3845323f6f30c44a47dd901f2edfe63) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240418/202404180747.NXWUtZTG-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/202404180747.NXWUtZTG-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: bpffs_struct_ops_link_open >>> referenced by syscall.c >>> kernel/bpf/syscall.o:(bpf_link_open) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
