Re: [PATCH v9 bpf-next 11/17] bpf,lsm: add BPF token LSM hooks

Hi Andrii,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Andrii-Nakryiko/bpf-align-CAP_NET_ADMIN-checks-with-bpf_capable-approach/20231104-031714
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20231103190523.6353-12-andrii%40kernel.org
patch subject: [PATCH v9 bpf-next 11/17] bpf,lsm: add BPF token LSM hooks
config: m68k-defconfig (https://download.01.org/0day-ci/archive/20231104/202311040829.XrnpSV8z-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231104/202311040829.XrnpSV8z-lkp@intel.com/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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202311040829.XrnpSV8z-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

   In file included from include/net/scm.h:8,
                    from include/linux/netlink.h:9,
                    from include/uapi/linux/neighbour.h:6,
                    from include/linux/netdevice.h:45,
                    from include/net/sock.h:46,
                    from include/linux/tcp.h:19,
                    from include/linux/ipv6.h:95,
                    from include/net/ipv6.h:12,
                    from include/linux/sunrpc/addr.h:14,
                    from fs/nfsd/nfsd.h:22,
                    from fs/nfsd/state.h:42,
                    from fs/nfsd/xdr4.h:40,
                    from fs/nfsd/trace.h:17,
                    from fs/nfsd/trace.c:4:

quoted

include/linux/security.h:2084:92: error: parameter 2 ('cmd') has incomplete type

    2084 | static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
         |                                                                               ~~~~~~~~~~~~~^~~

quoted

include/linux/security.h:2084:19: error: function declaration isn't a prototype [-Werror=strict-prototypes]

    2084 | static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
--
   In file included from include/net/scm.h:8,
                    from include/linux/netlink.h:9,
                    from include/uapi/linux/neighbour.h:6,
                    from include/linux/netdevice.h:45,
                    from include/net/sock.h:46,
                    from include/linux/tcp.h:19,
                    from include/linux/ipv6.h:95,
                    from include/net/ipv6.h:12,
                    from include/linux/sunrpc/addr.h:14,
                    from fs/nfsd/nfsd.h:22,
                    from fs/nfsd/export.c:21:

quoted

include/linux/security.h:2084:92: error: parameter 2 ('cmd') has incomplete type

    2084 | static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
         |                                                                               ~~~~~~~~~~~~~^~~

quoted

include/linux/security.h:2084:19: error: function declaration isn't a prototype [-Werror=strict-prototypes]

    2084 | static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   fs/nfsd/export.c: In function 'exp_rootfh':
   fs/nfsd/export.c:1017:34: warning: variable 'inode' set but not used [-Wunused-but-set-variable]
    1017 |         struct inode            *inode;
         |                                  ^~~~~
   cc1: some warnings being treated as errors
--
   In file included from include/net/scm.h:8,
                    from include/linux/netlink.h:9,
                    from include/uapi/linux/neighbour.h:6,
                    from include/linux/netdevice.h:45,
                    from include/net/sock.h:46,
                    from include/linux/tcp.h:19,
                    from include/linux/ipv6.h:95,
                    from include/net/ipv6.h:12,
                    from include/linux/sunrpc/addr.h:14,
                    from fs/nfsd/nfsd.h:22,
                    from fs/nfsd/state.h:42,
                    from fs/nfsd/xdr4.h:40,
                    from fs/nfsd/trace.h:17,
                    from fs/nfsd/trace.c:4:

quoted

include/linux/security.h:2084:92: error: parameter 2 ('cmd') has incomplete type

    2084 | static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
         |                                                                               ~~~~~~~~~~~~~^~~

quoted

include/linux/security.h:2084:19: error: function declaration isn't a prototype [-Werror=strict-prototypes]

    2084 | static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)
         |                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from fs/nfsd/trace.h:1958:
   include/trace/define_trace.h:95:42: fatal error: ./trace.h: No such file or directory
      95 | #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
         |                                          ^
   cc1: some warnings being treated as errors
   compilation terminated.


vim +2084 include/linux/security.h

  2083	

2084	static inline int security_bpf_token_allow_cmd(const struct bpf_token *token, enum bpf_cmd cmd)

  2085	{
  2086		return 0;
  2087	}
  2088	

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