linux-kernel - [congwang:bpf2 1/4] include/linux/skmsg.h:463:29: error: use of undeclared identifier 'sock_map_close'; did you mean 'sk_msg

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Date:   Tue, 28 Sep 2021 16:36:34 +0800
From:   kernel test robot <lkp@...el.com>
To:     Cong Wang <cong.wang@...edance.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [congwang:bpf2 1/4] include/linux/skmsg.h:463:29: error: use of
 undeclared identifier 'sock_map_close'; did you mean 'sk_msg_clone'?

tree:   https://github.com/congwang/linux.git bpf2
head:   9467b830d29e6f28b0700ef9801ba7debe6e8356
commit: a84e6076e2ba4269d7bb0d953cee9a155c241265 [1/4] skmsg: introduce sk_psock_get_checked()
config: hexagon-randconfig-r045-20210928 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498)
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/a84e6076e2ba4269d7bb0d953cee9a155c241265
        git remote add congwang https://github.com/congwang/linux.git
        git fetch --no-tags congwang bpf2
        git checkout a84e6076e2ba4269d7bb0d953cee9a155c241265
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash kernel/bpf/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   In file included from kernel/bpf/btf.c:22:
>> include/linux/skmsg.h:463:29: error: use of undeclared identifier 'sock_map_close'; did you mean 'sk_msg_clone'?
                   if (sk->sk_prot->close != sock_map_close) {
                                             ^~~~~~~~~~~~~~
                                             sk_msg_clone
   include/linux/compiler.h:56:47: note: expanded from macro 'if'
   #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
                                                 ^
   include/linux/compiler.h:58:52: note: expanded from macro '__trace_if_var'
   #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
                                                      ^
   include/linux/skmsg.h:113:5: note: 'sk_msg_clone' declared here
   int sk_msg_clone(struct sock *sk, struct sk_msg *dst, struct sk_msg *src,
       ^
>> include/linux/skmsg.h:463:29: error: use of undeclared identifier 'sock_map_close'; did you mean 'sk_msg_clone'?
                   if (sk->sk_prot->close != sock_map_close) {
                                             ^~~~~~~~~~~~~~
                                             sk_msg_clone
   include/linux/compiler.h:56:47: note: expanded from macro 'if'
   #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
                                                 ^
   include/linux/compiler.h:58:61: note: expanded from macro '__trace_if_var'
   #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
                                                               ^
   include/linux/skmsg.h:113:5: note: 'sk_msg_clone' declared here
   int sk_msg_clone(struct sock *sk, struct sk_msg *dst, struct sk_msg *src,
       ^
>> include/linux/skmsg.h:463:29: error: use of undeclared identifier 'sock_map_close'; did you mean 'sk_msg_clone'?
                   if (sk->sk_prot->close != sock_map_close) {
                                             ^~~~~~~~~~~~~~
                                             sk_msg_clone
   include/linux/compiler.h:56:47: note: expanded from macro 'if'
   #define if(cond, ...) if ( __trace_if_var( !!(cond , ## __VA_ARGS__) ) )
                                                 ^
   include/linux/compiler.h:58:86: note: expanded from macro '__trace_if_var'
   #define __trace_if_var(cond) (__builtin_constant_p(cond) ? (cond) : __trace_if_value(cond))
                                                                                        ^
   include/linux/compiler.h:69:3: note: expanded from macro '__trace_if_value'
           (cond) ?                                        \
            ^
   include/linux/skmsg.h:113:5: note: 'sk_msg_clone' declared here
   int sk_msg_clone(struct sock *sk, struct sk_msg *dst, struct sk_msg *src,
       ^
   3 errors generated.


vim +463 include/linux/skmsg.h

   454	
   455	static inline struct sk_psock *sk_psock_get_checked(struct sock *sk)
   456	{
   457		struct sk_psock *psock;
   458	
   459		rcu_read_lock();
   460		psock = sk_psock(sk);
   461		if (psock) {
   462	#if defined(CONFIG_BPF_SYSCALL)
 > 463			if (sk->sk_prot->close != sock_map_close) {
   464				rcu_read_unlock();
   465				return ERR_PTR(-EBUSY);
   466			}
   467	#endif
   468			if (!refcount_inc_not_zero(&psock->refcnt))
   469				psock = ERR_PTR(-EBUSY);
   470		}
   471		rcu_read_unlock();
   472		return psock;
   473	}
   474	

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

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