Hi Matteo, 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/Matteo-Croce/bpf-enable-generic-kfuncs-for-BPF_CGROUP_-programs/20240815-000517 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20240813132831.184362-3-technoboy85%40gmail.com patch subject: [PATCH bpf-next v5 2/2] bpf: allow bpf_current_task_under_cgroup() with BPF_CGROUP_* config: i386-buildonly-randconfig-002-20240816 (https://download.01.org/0day-ci/archive/20240816/202408161356.OvFB1jZi-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240816/202408161356.OvFB1jZi-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/202408161356.OvFB1jZi-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: bpf_current_task_under_cgroup_proto >>> referenced by bpf_trace.c >>> kernel/trace/bpf_trace.o:(bpf_tracing_func_proto) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
