tree: https://github.com/congwang/linux.git sockmap1 head: b2dfda210226f6718a7bab6ba27fca4958cf5fde commit: a2a4da967b9c6fb5571d8cc68866812503806f85 [6/7] fix config: arm-randconfig-r005-20210215 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/congwang/linux/commit/a2a4da967b9c6fb5571d8cc688668125... git remote add congwang https://github.com/congwang/linux.git git fetch --no-tags congwang sockmap1 git checkout a2a4da967b9c6fb5571d8cc68866812503806f85 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/net/espintcp.h:6, from net/ipv4/esp4.c:22: include/linux/skmsg.h: In function 'skb_bpf_set_ingress': 475 | skb->sk_redir |= BPF_F_INGRESS; | ^~ include/linux/skmsg.h: In function 'skb_bpf_set_redir': include/linux/skmsg.h:481:16: error: assignment of member 'sk_redir' in read-only object 481 | skb->sk_redir = (unsigned long)sk_redir; | ^ include/linux/skmsg.h:483:17: error: assignment of member 'sk_redir' in read-only object 483 | skb->sk_redir |= BPF_F_INGRESS; | ^~ -- In file included from net/ipv4/tcp_bpf.c:4: include/linux/skmsg.h: In function 'skb_bpf_set_ingress': 475 | skb->sk_redir |= BPF_F_INGRESS; | ^~ include/linux/skmsg.h: In function 'skb_bpf_set_redir': include/linux/skmsg.h:481:16: error: assignment of member 'sk_redir' in read-only object 481 | skb->sk_redir = (unsigned long)sk_redir; | ^ include/linux/skmsg.h:483:17: error: assignment of member 'sk_redir' in read-only object 483 | skb->sk_redir |= BPF_F_INGRESS; | ^~ net/ipv4/tcp_bpf.c: In function 'tcp_bpf_rebuild_protos': net/ipv4/tcp_bpf.c:563:31: error: 'sock_map_unhash' undeclared (first use in this function) 563 | prot[TCP_BPF_BASE].unhash = sock_map_unhash; | ^~~~~~~~~~~~~~~ net/ipv4/tcp_bpf.c:563:31: note: each undeclared identifier is reported only once for each function it appears in net/ipv4/tcp_bpf.c:564:30: error: 'sock_map_close' undeclared (first use in this function); did you mean 'sk_msg_clone'? 564 | prot[TCP_BPF_BASE].close = sock_map_close; | ^~~~~~~~~~~~~~ | sk_msg_clone -- In file included from net/ipv4/udp_bpf.c:4: include/linux/skmsg.h: In function 'skb_bpf_set_ingress': 475 | skb->sk_redir |= BPF_F_INGRESS; | ^~ include/linux/skmsg.h: In function 'skb_bpf_set_redir': include/linux/skmsg.h:481:16: error: assignment of member 'sk_redir' in read-only object 481 | skb->sk_redir = (unsigned long)sk_redir; | ^ include/linux/skmsg.h:483:17: error: assignment of member 'sk_redir' in read-only object 483 | skb->sk_redir |= BPF_F_INGRESS; | ^~ net/ipv4/udp_bpf.c: In function 'udp_bpf_rebuild_protos': net/ipv4/udp_bpf.c:21:17: error: 'sock_map_unhash' undeclared (first use in this function) 21 | prot->unhash = sock_map_unhash; | ^~~~~~~~~~~~~~~ net/ipv4/udp_bpf.c:21:17: note: each undeclared identifier is reported only once for each function it appears in net/ipv4/udp_bpf.c:22:17: error: 'sock_map_close' undeclared (first use in this function); did you mean 'sk_msg_clone'? 22 | prot->close = sock_map_close; | ^~~~~~~~~~~~~~ | sk_msg_clone vim +/sk_redir +475 include/linux/skmsg.h 471 472 static inline 473 void skb_bpf_set_ingress(const struct sk_buff *skb) 474 { 476 } 477 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org