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Date: Tue, 8 Mar 2022 20:23:47 +0800 From: kernel test robot <lkp@...el.com> To: Cong Wang <cong.wang@...edance.com> Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org Subject: [congwang:net-next 3/6] net/core/skmsg.c:1159:17: error: 'desc' undeclared tree: https://github.com/congwang/linux.git net-next head: 22f7ed3aeaffba31c10ca78b26baf372f54e347b commit: 2781a9702395d5b43d15c9becfd2901eaa501dd4 [3/6] tcp: introduce ->read_sock() config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220308/202203082002.YjBSPpOd-lkp@intel.com/config) compiler: powerpc-linux-gcc (GCC) 11.2.0 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/2781a9702395d5b43d15c9becfd2901eaa501dd4 git remote add congwang https://github.com/congwang/linux.git git fetch --no-tags congwang net-next git checkout 2781a9702395d5b43d15c9becfd2901eaa501dd4 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash net/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@...el.com> Note: the congwang/net-next HEAD 22f7ed3aeaffba31c10ca78b26baf372f54e347b builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): net/core/skmsg.c: In function 'sk_psock_verdict_recv': >> net/core/skmsg.c:1159:17: error: 'desc' undeclared (first use in this function) 1159 | desc->error = -ENOMEM; | ^~~~ net/core/skmsg.c:1159:17: note: each undeclared identifier is reported only once for each function it appears in vim +/desc +1159 net/core/skmsg.c 887596095ec2a9e Cong Wang 2021-02-23 1148 2781a9702395d5b Cong Wang 2022-03-07 1149 static int sk_psock_verdict_recv(struct sock *sk, struct sk_buff *skb) ef5659280eb13e8 John Fastabend 2020-10-10 1150 { ef5659280eb13e8 John Fastabend 2020-10-10 1151 struct sk_psock *psock; ef5659280eb13e8 John Fastabend 2020-10-10 1152 struct bpf_prog *prog; ef5659280eb13e8 John Fastabend 2020-10-10 1153 int ret = __SK_DROP; 2781a9702395d5b Cong Wang 2022-03-07 1154 int len = skb->len; ef5659280eb13e8 John Fastabend 2020-10-10 1155 ef5659280eb13e8 John Fastabend 2020-10-10 1156 /* clone here so sk_eat_skb() in tcp_read_sock does not drop our data */ ef5659280eb13e8 John Fastabend 2020-10-10 1157 skb = skb_clone(skb, GFP_ATOMIC); ef5659280eb13e8 John Fastabend 2020-10-10 1158 if (!skb) { ef5659280eb13e8 John Fastabend 2020-10-10 @1159 desc->error = -ENOMEM; ef5659280eb13e8 John Fastabend 2020-10-10 1160 return 0; ef5659280eb13e8 John Fastabend 2020-10-10 1161 } ef5659280eb13e8 John Fastabend 2020-10-10 1162 ef5659280eb13e8 John Fastabend 2020-10-10 1163 rcu_read_lock(); ef5659280eb13e8 John Fastabend 2020-10-10 1164 psock = sk_psock(sk); ef5659280eb13e8 John Fastabend 2020-10-10 1165 if (unlikely(!psock)) { ef5659280eb13e8 John Fastabend 2020-10-10 1166 len = 0; 781dd0431eb549f Cong Wang 2021-06-14 1167 sock_drop(sk, skb); ef5659280eb13e8 John Fastabend 2020-10-10 1168 goto out; ef5659280eb13e8 John Fastabend 2020-10-10 1169 } ae8b8332fbb512f Cong Wang 2021-02-23 1170 prog = READ_ONCE(psock->progs.stream_verdict); a7ba4558e69a3c2 Cong Wang 2021-03-30 1171 if (!prog) a7ba4558e69a3c2 Cong Wang 2021-03-30 1172 prog = READ_ONCE(psock->progs.skb_verdict); ef5659280eb13e8 John Fastabend 2020-10-10 1173 if (likely(prog)) { 144748eb0c44509 John Fastabend 2021-04-01 1174 skb->sk = sk; e3526bb92a2084c Cong Wang 2021-02-23 1175 skb_dst_drop(skb); e3526bb92a2084c Cong Wang 2021-02-23 1176 skb_bpf_redirect_clear(skb); 533342322276b06 Cong Wang 2021-02-23 1177 ret = bpf_prog_run_pin_on_cpu(prog, skb); e3526bb92a2084c Cong Wang 2021-02-23 1178 ret = sk_psock_map_verd(ret, skb_bpf_redirect_fetch(skb)); 144748eb0c44509 John Fastabend 2021-04-01 1179 skb->sk = NULL; ef5659280eb13e8 John Fastabend 2020-10-10 1180 } 1581a6c1c3291a8 Cong Wang 2021-06-14 1181 if (sk_psock_verdict_apply(psock, skb, ret) < 0) 1581a6c1c3291a8 Cong Wang 2021-06-14 1182 len = 0; ef5659280eb13e8 John Fastabend 2020-10-10 1183 out: ef5659280eb13e8 John Fastabend 2020-10-10 1184 rcu_read_unlock(); ef5659280eb13e8 John Fastabend 2020-10-10 1185 return len; ef5659280eb13e8 John Fastabend 2020-10-10 1186 } ef5659280eb13e8 John Fastabend 2020-10-10 1187 :::::: The code at line 1159 was first introduced by commit :::::: ef5659280eb13e8ac31c296f58cfdfa1684ac06b bpf, sockmap: Allow skipping sk_skb parser program :::::: TO: John Fastabend <john.fastabend@...il.com> :::::: CC: Alexei Starovoitov <ast@...nel.org> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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