Hi Jason, kernel test robot noticed the following build warnings: [auto build test WARNING on net-next/main] url: https://github.com/intel-lab-lkp/linux/commits/Jason-Xing/net-timestamp-add-support-for-bpf_setsockopt/20250112-194115 base: net-next/main patch link: https://lore.kernel.org/r/20250112113748.73504-2-kerneljasonxing%40gmail.com patch subject: [PATCH net-next v5 01/15] net-timestamp: add support for bpf_setsockopt() config: i386-buildonly-randconfig-005-20250112 (https://download.01.org/0day-ci/archive/20250112/202501122252.dqEPb1Wd-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250112/202501122252.dqEPb1Wd-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/202501122252.dqEPb1Wd-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): net/core/filter.c: In function 'sk_bpf_set_cb_flags': net/core/filter.c:5237:11: error: 'struct sock' has no member named 'sk_bpf_cb_flags' 5237 | sk->sk_bpf_cb_flags = sk_bpf_cb_flags; | ^~ net/core/filter.c: At top level: >> net/core/filter.c:5225:12: warning: 'sk_bpf_set_cb_flags' defined but not used [-Wunused-function] 5225 | static int sk_bpf_set_cb_flags(struct sock *sk, char *optval, bool getopt) | ^~~~~~~~~~~~~~~~~~~ vim +/sk_bpf_set_cb_flags +5225 net/core/filter.c 5224 > 5225 static int sk_bpf_set_cb_flags(struct sock *sk, char *optval, bool getopt) 5226 { 5227 u32 sk_bpf_cb_flags; 5228 5229 if (getopt) 5230 return -EINVAL; 5231 5232 sk_bpf_cb_flags = *(u32 *)optval; 5233 5234 if (sk_bpf_cb_flags & ~SK_BPF_CB_MASK) 5235 return -EINVAL; 5236 > 5237 sk->sk_bpf_cb_flags = sk_bpf_cb_flags; 5238 5239 return 0; 5240 } 5241 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki