Hi Kuniyuki, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/net] url: https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/tcp-Save-lock_sock-for-memcg-in-inet_csk_accept/20250823-062322 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git net patch link: https://lore.kernel.org/r/20250822221846.744252-3-kuniyu%40google.com patch subject: [PATCH v1 bpf-next/net 2/8] bpf: Add a bpf hook in __inet_accept(). config: x86_64-buildonly-randconfig-001-20250823 (https://download.01.org/0day-ci/archive/20250823/202508231842.8DrS8EwE-lkp@xxxxxxxxx/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250823/202508231842.8DrS8EwE-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/202508231842.8DrS8EwE-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): net/ipv4/af_inet.c: In function '__inet_accept': >> net/ipv4/af_inet.c:766:9: error: implicit declaration of function 'BPF_CGROUP_RUN_PROG_INET_SOCK_ACCEPT'; did you mean 'BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE'? [-Werror=implicit-function-declaration] 766 | BPF_CGROUP_RUN_PROG_INET_SOCK_ACCEPT(newsk); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE cc1: some warnings being treated as errors vim +766 net/ipv4/af_inet.c 753 754 void __inet_accept(struct socket *sock, struct socket *newsock, struct sock *newsk) 755 { 756 gfp_t gfp = GFP_KERNEL | __GFP_NOFAIL; 757 758 /* TODO: use sk_clone_lock() in SCTP and remove protocol checks */ 759 if (mem_cgroup_sockets_enabled && 760 (!IS_ENABLED(CONFIG_IP_SCTP) || 761 sk_is_tcp(newsk) || sk_is_mptcp(newsk))) { 762 mem_cgroup_sk_alloc(newsk); 763 kmem_cache_charge(newsk, gfp); 764 } 765 > 766 BPF_CGROUP_RUN_PROG_INET_SOCK_ACCEPT(newsk); 767 768 if (mem_cgroup_sk_enabled(newsk)) { 769 int amt; 770 771 /* The socket has not been accepted yet, no need 772 * to look at newsk->sk_wmem_queued. 773 */ 774 amt = sk_mem_pages(newsk->sk_forward_alloc + 775 atomic_read(&newsk->sk_rmem_alloc)); 776 if (amt) 777 mem_cgroup_sk_charge(newsk, amt, gfp); 778 } 779 780 sock_rps_record_flow(newsk); 781 WARN_ON(!((1 << newsk->sk_state) & 782 (TCPF_ESTABLISHED | TCPF_SYN_RECV | 783 TCPF_FIN_WAIT1 | TCPF_FIN_WAIT2 | 784 TCPF_CLOSING | TCPF_CLOSE_WAIT | 785 TCPF_CLOSE))); 786 787 if (test_bit(SOCK_SUPPORT_ZC, &sock->flags)) 788 set_bit(SOCK_SUPPORT_ZC, &newsock->flags); 789 sock_graft(newsk, newsock); 790 791 newsock->state = SS_CONNECTED; 792 } 793 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
