Hi Lorenzo, Thank you for the patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Bianconi/net-netfilter-add-kfunc-helper-to-update-ct-timeout/20220527-053913 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220527/202205270749.blol7EcF-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/c346565af9b023d9231ca8fca2e1b8c66a782f84 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Lorenzo-Bianconi/net-netfilter-add-kfunc-helper-to-update-ct-timeout/20220527-053913 git checkout c346565af9b023d9231ca8fca2e1b8c66a782f84 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): net/core/filter.c: In function 'xdp_tc_btf_struct_access': >> net/core/filter.c:10479:16: error: implicit declaration of function 'btf_struct_access'; did you mean 'xdp_tc_btf_struct_access'? [-Werror=implicit-function-declaration] 10479 | return btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag); | ^~~~~~~~~~~~~~~~~ | xdp_tc_btf_struct_access cc1: some warnings being treated as errors vim +10479 net/core/filter.c 10459 10460 static int xdp_tc_btf_struct_access(struct bpf_verifier_log *log, 10461 const struct btf *btf, 10462 const struct btf_type *t, int off, int size, 10463 enum bpf_access_type atype, 10464 u32 *next_btf_id, enum bpf_type_flag *flag) 10465 { 10466 int ret; 10467 10468 if (atype == BPF_READ || !READ_ONCE(nf_conn_btf_struct_access)) 10469 goto end; 10470 mutex_lock(&nf_conn_btf_struct_access_mtx); 10471 if (!nf_conn_btf_struct_access) 10472 goto end_unlock; 10473 ret = nf_conn_btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag); 10474 mutex_unlock(&nf_conn_btf_struct_access_mtx); 10475 return ret; 10476 end_unlock: 10477 mutex_unlock(&nf_conn_btf_struct_access_mtx); 10478 end: 10479 return btf_struct_access(log, btf, t, off, size, atype, next_btf_id, flag); 10480 } 10481 -- 0-DAY CI Kernel Test Service https://01.org/lkp
