Re: [PATCH v2 7/8] io_uring/cmd: BPF hook for getsockopt cmd

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Hi Breno,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20230808]
[cannot apply to bpf-next/master bpf/master net/main net-next/main linus/master horms-ipvs/master v6.5-rc5 v6.5-rc4 v6.5-rc3 v6.5-rc5]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Breno-Leitao/net-expose-sock_use_custom_sol_socket/20230809-011901
base:   next-20230808
patch link:    https://lore.kernel.org/r/20230808134049.1407498-8-leitao%40debian.org
patch subject: [PATCH v2 7/8] io_uring/cmd: BPF hook for getsockopt cmd
config: x86_64-randconfig-r012-20230808 (https://download.01.org/0day-ci/archive/20230809/202308091149.ltz0y4QZ-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230809/202308091149.ltz0y4QZ-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308091149.ltz0y4QZ-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   In file included from include/linux/export.h:5,
                    from include/linux/linkage.h:7,
                    from include/linux/kernel.h:17,
                    from io_uring/uring_cmd.c:2:
   io_uring/uring_cmd.c: In function 'io_uring_cmd_getsockopt':
>> include/linux/bpf-cgroup.h:393:41: error: 'tcp_bpf_bypass_getsockopt' undeclared (first use in this function)
     393 |                                         tcp_bpf_bypass_getsockopt,             \
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/compiler.h:76:45: note: in definition of macro 'likely'
      76 | # define likely(x)      __builtin_expect(!!(x), 1)
         |                                             ^
   include/linux/indirect_call_wrapper.h:66:42: note: in expansion of macro 'INDIRECT_CALL_1'
      66 | #define INDIRECT_CALL_INET_1(f, f1, ...) INDIRECT_CALL_1(f, f1, __VA_ARGS__)
         |                                          ^~~~~~~~~~~~~~~
   include/linux/bpf-cgroup.h:392:22: note: in expansion of macro 'INDIRECT_CALL_INET_1'
     392 |                     !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
         |                      ^~~~~~~~~~~~~~~~~~~~
   io_uring/uring_cmd.c:191:23: note: in expansion of macro 'BPF_CGROUP_RUN_PROG_GETSOCKOPT'
     191 |                 err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level,
         |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/bpf-cgroup.h:393:41: note: each undeclared identifier is reported only once for each function it appears in
     393 |                                         tcp_bpf_bypass_getsockopt,             \
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/compiler.h:76:45: note: in definition of macro 'likely'
      76 | # define likely(x)      __builtin_expect(!!(x), 1)
         |                                             ^
   include/linux/indirect_call_wrapper.h:66:42: note: in expansion of macro 'INDIRECT_CALL_1'
      66 | #define INDIRECT_CALL_INET_1(f, f1, ...) INDIRECT_CALL_1(f, f1, __VA_ARGS__)
         |                                          ^~~~~~~~~~~~~~~
   include/linux/bpf-cgroup.h:392:22: note: in expansion of macro 'INDIRECT_CALL_INET_1'
     392 |                     !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
         |                      ^~~~~~~~~~~~~~~~~~~~
   io_uring/uring_cmd.c:191:23: note: in expansion of macro 'BPF_CGROUP_RUN_PROG_GETSOCKOPT'
     191 |                 err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level,
         |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from include/net/sock.h:62,
                    from include/linux/bpf-cgroup.h:11,
                    from io_uring/uring_cmd.c:9:
>> include/linux/bpf-cgroup.h:393:41: error: implicit declaration of function 'tcp_bpf_bypass_getsockopt' [-Werror=implicit-function-declaration]
     393 |                                         tcp_bpf_bypass_getsockopt,             \
         |                                         ^~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/indirect_call_wrapper.h:19:35: note: in definition of macro 'INDIRECT_CALL_1'
      19 |                 likely(f == f1) ? f1(__VA_ARGS__) : f(__VA_ARGS__);     \
         |                                   ^~
   include/linux/bpf-cgroup.h:392:22: note: in expansion of macro 'INDIRECT_CALL_INET_1'
     392 |                     !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
         |                      ^~~~~~~~~~~~~~~~~~~~
   io_uring/uring_cmd.c:191:23: note: in expansion of macro 'BPF_CGROUP_RUN_PROG_GETSOCKOPT'
     191 |                 err = BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock->sk, level,
         |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   io_uring/uring_cmd.c: In function 'io_uring_cmd_setsockopt':
   io_uring/uring_cmd.c:223:58: error: 'koptval' undeclared (first use in this function); did you mean 'optval'?
     223 |                                             USER_SOCKPTR(koptval), optlen);
         |                                                          ^~~~~~~
         |                                                          optval
   cc1: some warnings being treated as errors


vim +/tcp_bpf_bypass_getsockopt +393 include/linux/bpf-cgroup.h

0d01da6afc5402 Stanislav Fomichev 2019-06-27  384  
0d01da6afc5402 Stanislav Fomichev 2019-06-27  385  #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen,   \
0d01da6afc5402 Stanislav Fomichev 2019-06-27  386  				       max_optlen, retval)		       \
0d01da6afc5402 Stanislav Fomichev 2019-06-27  387  ({									       \
0d01da6afc5402 Stanislav Fomichev 2019-06-27  388  	int __ret = retval;						       \
46531a30364bd4 Pavel Begunkov     2022-01-27  389  	if (cgroup_bpf_enabled(CGROUP_GETSOCKOPT) &&			       \
46531a30364bd4 Pavel Begunkov     2022-01-27  390  	    cgroup_bpf_sock_enabled(sock, CGROUP_GETSOCKOPT))		       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  391  		if (!(sock)->sk_prot->bpf_bypass_getsockopt ||		       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  392  		    !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
9cacf81f816111 Stanislav Fomichev 2021-01-15 @393  					tcp_bpf_bypass_getsockopt,	       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  394  					level, optname))		       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  395  			__ret = __cgroup_bpf_run_filter_getsockopt(	       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  396  				sock, level, optname, optval, optlen,	       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  397  				max_optlen, retval);			       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  398  	__ret;								       \
9cacf81f816111 Stanislav Fomichev 2021-01-15  399  })
9cacf81f816111 Stanislav Fomichev 2021-01-15  400  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki




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