Hi Daniel, Thank you for the patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Xu/Add-PROG_TEST_RUN-support-to-BPF_PROG_TYPE_KPROBE/20220530-060742 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: s390-randconfig-r002-20220531 (https://download.01.org/0day-ci/archive/20220601/202206011814.9lsKlbB0-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c825abd6b0198fb088d9752f556a70705bc99dfd) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/a547a4c795103fd002d3bbb5ee4d7141113716c0 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Daniel-Xu/Add-PROG_TEST_RUN-support-to-BPF_PROG_TYPE_KPROBE/20220530-060742 git checkout a547a4c795103fd002d3bbb5ee4d7141113716c0 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> /opt/cross/gcc-11.3.0-nolibc/s390x-linux/bin/s390x-linux-ld: kernel/trace/bpf_trace.o:kernel/trace/bpf_trace.c:1365: undefined reference to `bpf_prog_test_run_kprobe' -- 0-DAY CI Kernel Test Service https://01.org/lkp
