[congwang:net-next 3/6] net/core/skmsg.c:1159:17: error: 'desc' undeclared

[kernel test robot <lkp@intel.com>]

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@intel.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@gmail.com>
:::::: CC: Alexei Starovoitov <ast@kernel.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org