Hi Florian, I love your patch! Yet something to improve: [auto build test ERROR on nf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Florian-Westphal/netfilter-remove-NFPROTO_DECNET/20220822-224303 base: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next.git master config: hexagon-randconfig-r041-20220821 (https://download.01.org/0day-ci/archive/20220823/202208230953.khEWYODC-lkp@xxxxxxxxx/config) compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project abce7acebd4c06c977bc4bd79170697f1122bc5e) 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/intel-lab-lkp/linux/commit/0776a7974c60171c4c1322add934ecc73273f538 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Florian-Westphal/netfilter-remove-NFPROTO_DECNET/20220822-224303 git checkout 0776a7974c60171c4c1322add934ecc73273f538 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash net/decnet/ net/netfilter/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from net/decnet/af_decnet.c:109: >> include/linux/netfilter.h:247:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ 1 error generated. -- In file included from net/decnet/dn_nsp_in.c:64: In file included from include/uapi/linux/netfilter_decnet.h:11: >> include/linux/netfilter.h:247:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ >> net/decnet/dn_nsp_in.c:808:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_LOCAL_IN, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ 2 errors generated. -- In file included from net/decnet/dn_route.c:69: In file included from include/uapi/linux/netfilter_decnet.h:11: >> include/linux/netfilter.h:247:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ >> net/decnet/dn_route.c:567:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_PRE_ROUTING, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:595:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_PRE_ROUTING, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:700:19: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_HELLO, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:706:19: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_ROUTE, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:710:19: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_HELLO, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:715:19: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_HELLO, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:765:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_LOCAL_OUT, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_route.c:812:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_FORWARD, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ 9 errors generated. -- In file included from net/decnet/dn_neigh.c:37: In file included from include/uapi/linux/netfilter_decnet.h:11: >> include/linux/netfilter.h:247:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ >> net/decnet/dn_neigh.c:250:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_POST_ROUTING, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_neigh.c:291:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_POST_ROUTING, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ net/decnet/dn_neigh.c:333:17: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? return NF_HOOK(NFPROTO_DECNET, NF_DN_POST_ROUTING, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ 4 errors generated. -- In file included from net/netfilter/core.c:10: >> include/linux/netfilter.h:247:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ >> net/netfilter/core.c:304:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ 2 errors generated. -- In file included from net/decnet/netfilter/dn_rtmsg.c:18: >> include/linux/netfilter.h:247:7: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? case NFPROTO_DECNET: ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ >> net/decnet/netfilter/dn_rtmsg.c:118:9: error: use of undeclared identifier 'NFPROTO_DECNET'; did you mean 'NFPROTO_INET'? .pf = NFPROTO_DECNET, ^~~~~~~~~~~~~~ NFPROTO_INET include/uapi/linux/netfilter.h:60:2: note: 'NFPROTO_INET' declared here NFPROTO_INET = 1, ^ 2 errors generated. vim +247 include/linux/netfilter.h af4610c39589d8 Florian Westphal 2016-02-25 225 e3b37f11e6e4e6 Aaron Conole 2016-09-21 226 rcu_read_lock(); b0f38338aef2da Florian Westphal 2017-12-03 227 switch (pf) { b0f38338aef2da Florian Westphal 2017-12-03 228 case NFPROTO_IPV4: b0f38338aef2da Florian Westphal 2017-12-03 229 hook_head = rcu_dereference(net->nf.hooks_ipv4[hook]); b0f38338aef2da Florian Westphal 2017-12-03 230 break; b0f38338aef2da Florian Westphal 2017-12-03 231 case NFPROTO_IPV6: b0f38338aef2da Florian Westphal 2017-12-03 232 hook_head = rcu_dereference(net->nf.hooks_ipv6[hook]); b0f38338aef2da Florian Westphal 2017-12-03 233 break; b0f38338aef2da Florian Westphal 2017-12-03 234 case NFPROTO_ARP: 2a95183a5e0375 Florian Westphal 2017-12-07 235 #ifdef CONFIG_NETFILTER_FAMILY_ARP 421c119f558761 Florian Westphal 2018-09-24 236 if (WARN_ON_ONCE(hook >= ARRAY_SIZE(net->nf.hooks_arp))) 421c119f558761 Florian Westphal 2018-09-24 237 break; b0f38338aef2da Florian Westphal 2017-12-03 238 hook_head = rcu_dereference(net->nf.hooks_arp[hook]); 2a95183a5e0375 Florian Westphal 2017-12-07 239 #endif b0f38338aef2da Florian Westphal 2017-12-03 240 break; b0f38338aef2da Florian Westphal 2017-12-03 241 case NFPROTO_BRIDGE: 2a95183a5e0375 Florian Westphal 2017-12-07 242 #ifdef CONFIG_NETFILTER_FAMILY_BRIDGE b0f38338aef2da Florian Westphal 2017-12-03 243 hook_head = rcu_dereference(net->nf.hooks_bridge[hook]); 2a95183a5e0375 Florian Westphal 2017-12-07 244 #endif b0f38338aef2da Florian Westphal 2017-12-03 245 break; bb4badf3a3dc81 Florian Westphal 2017-12-07 246 #if IS_ENABLED(CONFIG_DECNET) b0f38338aef2da Florian Westphal 2017-12-03 @247 case NFPROTO_DECNET: b0f38338aef2da Florian Westphal 2017-12-03 248 hook_head = rcu_dereference(net->nf.hooks_decnet[hook]); b0f38338aef2da Florian Westphal 2017-12-03 249 break; bb4badf3a3dc81 Florian Westphal 2017-12-07 250 #endif b0f38338aef2da Florian Westphal 2017-12-03 251 default: b0f38338aef2da Florian Westphal 2017-12-03 252 WARN_ON_ONCE(1); b0f38338aef2da Florian Westphal 2017-12-03 253 break; b0f38338aef2da Florian Westphal 2017-12-03 254 } b0f38338aef2da Florian Westphal 2017-12-03 255 e3b37f11e6e4e6 Aaron Conole 2016-09-21 256 if (hook_head) { 107a9f4dc9211c David Miller 2015-04-05 257 struct nf_hook_state state; cfdfab314647b1 David S. Miller 2015-04-03 258 01886bd91f1ba4 Pablo Neira Ayuso 2016-11-03 259 nf_hook_state_init(&state, hook, pf, indev, outdev, 1610a73c4175e7 Pablo Neira Ayuso 2016-11-03 260 sk, net, okfn); fe72926b792e52 Florian Westphal 2016-09-21 261 960632ece6949b Aaron Conole 2017-08-24 262 ret = nf_hook_slow(skb, &state, hook_head, 0); e3b37f11e6e4e6 Aaron Conole 2016-09-21 263 } fe72926b792e52 Florian Westphal 2016-09-21 264 rcu_read_unlock(); e3b37f11e6e4e6 Aaron Conole 2016-09-21 265 fe72926b792e52 Florian Westphal 2016-09-21 266 return ret; cfdfab314647b1 David S. Miller 2015-04-03 267 } 16a6677fdf1d11 Patrick McHardy 2006-01-06 268 -- 0-DAY CI Kernel Test Service https://01.org/lkp