tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/fprobe_link_5 head: 9149abfa25286fdf715525babec5150939c9ac96 commit: 6944d13cf0af8628c0b80eb90359d90cbba0d69c [4/10] bpf: Add bpf_get_func_ip kprobe helper for fprobe link config: riscv-randconfig-m031-20220213 (https://download.01.org/0day-ci/archive/20220214/202202140631.G10tOwU5-lk...) compiler: riscv32-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id... git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git git fetch --no-tags jolsa-perf bpf/fprobe_link_5 git checkout 6944d13cf0af8628c0b80eb90359d90cbba0d69c # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash kernel/bpf/ kernel/trace/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): kernel/trace/bpf_trace.c: In function '____bpf_get_func_ip_fprobe': 1043 | return regs->ip; | ^~ | sp kernel/trace/bpf_trace.c:1044:1: error: control reaches end of non-void function [-Werror=return-type] 1044 | } | ^ cc1: some warnings being treated as errors vim +1043 kernel/trace/bpf_trace.c 1039 1040 BPF_CALL_1(bpf_get_func_ip_fprobe, struct pt_regs *, regs) 1041 { 1042 /* This helper call is inlined by verifier. */ 1044 } 1045 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org