tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/ftrace head: 5906e0659463d7c0fbe13a7e097e26f448f54527 commit: d9e5279c64019b04e05525faa74f5407b9f0b943 [3/7] bpf: Add support to attach program to ftrace probe config: nds32-randconfig-r005-20210414 (attached as .config) compiler: nds32le-linux-gcc (GCC) 9.3.0 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/ftrace git checkout d9e5279c64019b04e05525faa74f5407b9f0b943 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=nds32 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/bpf/syscall.c: In function 'bpf_ftrace_function_call': 2937 | bpf_trace_run2(tr_link->link.prog, ip, parent_ip); | ^~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/bpf_trace_run2 +2937 kernel/bpf/syscall.c 2919 2920 static void 2921 bpf_ftrace_function_call(unsigned long ip, unsigned long parent_ip, 2922 struct ftrace_ops *ops, struct ftrace_regs *fregs) 2923 { 2924 struct bpf_tracing_ftrace_link *tr_link; 2925 struct bpf_prog *prog; 2926 u64 start; 2927 2928 tr_link = container_of(ops, struct bpf_tracing_ftrace_link, ops); 2929 prog = tr_link->link.prog; 2930 2931 if (prog->aux->sleepable) 2932 start = __bpf_prog_enter_sleepable(prog); 2933 else 2934 start = __bpf_prog_enter(prog); 2935 2936 if (start) 2938 2939 if (prog->aux->sleepable) 2940 __bpf_prog_exit_sleepable(prog, start); 2941 else 2942 __bpf_prog_exit(prog, start); 2943 } 2944 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org