Hi Björn, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: f8e6dfc64f6135d1b6c5215c14cd30b9b60a0008 commit: 75ccbef6369e94ecac696a152a998a978d41376b bpf: Introduce BPF dispatcher date: 1 year, 8 months ago config: x86_64-buildonly-randconfig-r001-20210814 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 75ccbef6369e94ecac696a152a998a978d41376b # save the attached .config to linux build tree make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 1647 | int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/arch_prepare_bpf_dispatcher +1647 arch/x86/net/bpf_jit_comp.c 1646 1648 { 1649 u8 *prog = image; 1650 1651 sort(funcs, num_funcs, sizeof(funcs[0]), cmp_ips, NULL); 1652 return emit_bpf_dispatcher(&prog, 0, num_funcs - 1, funcs); 1653 } 1654 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org