Hi Ryan, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Ryan-Wilson/bpf-Add-multi-prog-support-for-XDP-BPF-programs/20241115-015104 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20241114170721.3939099-1-ryantimwilson%40gmail.com patch subject: [PATCH bpf-next] bpf: Add multi-prog support for XDP BPF programs config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20241117/202411171200.F60G1P8R-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 592c0fe55f6d9a811028b5f3507be91458ab2713) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241117/202411171200.F60G1P8R-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/202411171200.F60G1P8R-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from arch/s390/boot/startup.c:14: In file included from arch/s390/include/asm/diag.h:12: In file included from include/linux/if_ether.h:19: In file included from include/linux/skbuff.h:24: In file included from include/linux/bpf_mprog.h:6: >> include/linux/bpf.h:2068:24: warning: field 'hdr' with variable sized type 'struct bpf_prog_array' not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end] 2068 | struct bpf_prog_array hdr; | ^ 1 warning generated. vim +2068 include/linux/bpf.h 324bda9e6c5add Alexei Starovoitov 2017-10-02 2066 46531a30364bd4 Pavel Begunkov 2022-01-27 2067 struct bpf_empty_prog_array { 46531a30364bd4 Pavel Begunkov 2022-01-27 @2068 struct bpf_prog_array hdr; 46531a30364bd4 Pavel Begunkov 2022-01-27 2069 struct bpf_prog *null_prog; 46531a30364bd4 Pavel Begunkov 2022-01-27 2070 }; 46531a30364bd4 Pavel Begunkov 2022-01-27 2071 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
