Hi Leonard, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on 2a2b6e3640c43a808dcb5226963e2cc0669294b1] url: https://github.com/0day-ci/linux/commits/Leonard-Crestez/tcp-Initial-supp... base: 2a2b6e3640c43a808dcb5226963e2cc0669294b1 config: riscv-allyesconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 10.3.0 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/0day-ci/linux/commit/262249e896df425f9daf2437bdd09b46a... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Leonard-Crestez/tcp-Initial-support-for-RFC5925-auth-option/20210810-053824 git checkout 262249e896df425f9daf2437bdd09b46a30516b2 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): net/ipv4/tcp_authopt.c:160:30: warning: no previous prototype for '__tcp_authopt_key_info_lookup' [-Wmissing-prototypes] 160 | struct tcp_authopt_key_info *__tcp_authopt_key_info_lookup(const struct sock *sk, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 173 | struct tcp_authopt_key_info *tcp_authopt_lookup_send(struct tcp_authopt_info *info, | ^~~~~~~~~~~~~~~~~~~~~~~ net/ipv4/tcp_authopt.c: In function 'tcp_set_authopt': net/ipv4/tcp_authopt.c:267:62: error: expected ';' before ')' token 267 | info->flags = opt.flags & TCP_AUTHOPT_FLAG_REJECT_UNEXPECTED); | ^ | ; net/ipv4/tcp_authopt.c:267:62: error: expected statement before ')' token net/ipv4/tcp_authopt.c: At top level: net/ipv4/tcp_authopt.c:305:6: warning: no previous prototype for '__tcp_authopt_info_free' [-Wmissing-prototypes] 305 | void __tcp_authopt_info_free(struct sock *sk, struct tcp_authopt_info *info) | ^~~~~~~~~~~~~~~~~~~~~~~ In file included from include/linux/rbtree.h:22, from include/linux/mm_types.h:10, from include/linux/mmzone.h:21, from include/linux/gfp.h:6, from include/linux/mm.h:10, from include/linux/bvec.h:14, from include/linux/skbuff.h:17, from include/linux/tcp.h:17, from include/net/tcp.h:20, from net/ipv4/tcp_authopt.c:4: net/ipv4/tcp_authopt.c: In function 'tcp_authopt_clone_keys': net/ipv4/tcp_authopt.c:412:80: error: 'sk' undeclared (first use in this function); did you mean 's8'? 412 | hlist_for_each_entry_rcu(old_key, &old_info->head, node, lockdep_sock_is_held(sk)) { | ^~ include/linux/rcupdate.h:318:8: note: in definition of macro 'RCU_LOCKDEP_WARN' 318 | if ((c) && debug_lockdep_rcu_enabled() && !__warned) { \ | ^ include/linux/rculist.h:706:7: note: in expansion of macro '__list_check_rcu' 706 | for (__list_check_rcu(dummy, ## cond, 0), \ | ^~~~~~~~~~~~~~~~ net/ipv4/tcp_authopt.c:412:2: note: in expansion of macro 'hlist_for_each_entry_rcu' 412 | hlist_for_each_entry_rcu(old_key, &old_info->head, node, lockdep_sock_is_held(sk)) { | ^~~~~~~~~~~~~~~~~~~~~~~~ net/ipv4/tcp_authopt.c:412:80: note: each undeclared identifier is reported only once for each function it appears in 412 | hlist_for_each_entry_rcu(old_key, &old_info->head, node, lockdep_sock_is_held(sk)) { | ^~ include/linux/rcupdate.h:318:8: note: in definition of macro 'RCU_LOCKDEP_WARN' 318 | if ((c) && debug_lockdep_rcu_enabled() && !__warned) { \ | ^ include/linux/rculist.h:706:7: note: in expansion of macro '__list_check_rcu' 706 | for (__list_check_rcu(dummy, ## cond, 0), \ | ^~~~~~~~~~~~~~~~ net/ipv4/tcp_authopt.c:412:2: note: in expansion of macro 'hlist_for_each_entry_rcu' 412 | hlist_for_each_entry_rcu(old_key, &old_info->head, node, lockdep_sock_is_held(sk)) { | ^~~~~~~~~~~~~~~~~~~~~~~~ net/ipv4/tcp_authopt.c: In function 'tcp_authopt_shash_traffic_key': net/ipv4/tcp_authopt.c:486:21: warning: variable 'daddr' set but not used [-Wunused-but-set-variable] 486 | struct in6_addr *daddr; | ^~~~~ net/ipv4/tcp_authopt.c:485:21: warning: variable 'saddr' set but not used [-Wunused-but-set-variable] 485 | struct in6_addr *saddr; | ^~~~~ net/ipv4/tcp_authopt.c: At top level: net/ipv4/tcp_authopt.c:878:5: warning: no previous prototype for '__tcp_authopt_calc_mac' [-Wmissing-prototypes] 878 | int __tcp_authopt_calc_mac(struct sock *sk, | ^~~~~~~~~~~~~~~~~~~~~~ vim +/tcp_authopt_lookup_send +173 net/ipv4/tcp_authopt.c 172 174 const struct sock *addr_sk, 175 int send_id) 176 { 177 struct tcp_authopt_key_info *result = NULL; 178 struct tcp_authopt_key_info *key; 179 180 hlist_for_each_entry_rcu(key, &info->head, node, 0) { 181 if (send_id >= 0 && key->send_id != send_id) 182 continue; 183 if (key->flags & TCP_AUTHOPT_KEY_ADDR_BIND) { 184 if (addr_sk->sk_family == AF_INET) { 185 struct sockaddr_in *key_addr = (struct sockaddr_in *)&key->addr; 186 const struct in_addr *daddr = 187 (const struct in_addr *)&addr_sk->sk_daddr; 188 189 if (WARN_ON(key_addr->sin_family != AF_INET)) 190 continue; 191 if (memcmp(daddr, &key_addr->sin_addr, sizeof(*daddr))) 192 continue; 193 } 194 if (addr_sk->sk_family == AF_INET6) { 195 struct sockaddr_in6 *key_addr = (struct sockaddr_in6 *)&key->addr; 196 const struct in6_addr *daddr = &addr_sk->sk_v6_daddr; 197 198 if (WARN_ON(key_addr->sin6_family != AF_INET6)) 199 continue; 200 if (memcmp(daddr, &key_addr->sin6_addr, sizeof(*daddr))) 201 continue; 202 } 203 } 204 if (result && net_ratelimit()) 205 pr_warn("ambiguous tcp authentication keys configured for send\n"); 206 result = key; 207 } 208 209 return result; 210 } 211 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org