[PATCH v4 bpf-next 07/12] bpf: consistenly use BPF token throughout BPF verifier logic

[kernel test robot]

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-add-BPF-token-delegation-mount-options-to-BPF-FS/20230913-053240
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20230912212906.3975866-8-andrii%40kernel.org
patch subject: [PATCH v4 bpf-next 07/12] bpf: consistenly use BPF token throughout BPF verifier logic
config: x86_64-randconfig-074-20230914 (https://download.01.org/0day-ci/archive/20230914/202309140537.jHmBqMd6-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230914/202309140537.jHmBqMd6-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 <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309140537.jHmBqMd6-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/net/sock_reuseport.h:5,
                    from include/net/tcp.h:35,
                    from include/linux/netfilter_ipv6.h:11,
                    from include/uapi/linux/netfilter_ipv6/ip6_tables.h:22,
                    from include/linux/netfilter_ipv6/ip6_tables.h:23,
                    from net/ipv6/netfilter/ip6table_filter.c:11:
   include/linux/filter.h: In function 'bpf_jit_blinding_enabled':
>> include/linux/filter.h:1104:36: error: implicit declaration of function 'bpf_token_capable'; did you mean 'bpf_token_put'? [-Werror=implicit-function-declaration]
    1104 |         if (bpf_jit_harden == 1 && bpf_token_capable(prog->aux->token, CAP_BPF))
         |                                    ^~~~~~~~~~~~~~~~~
         |                                    bpf_token_put
   cc1: some warnings being treated as errors
--
   In file included from include/net/sock_reuseport.h:5,
                    from include/net/tcp.h:35,
                    from include/linux/netfilter_ipv6.h:11,
                    from net/ipv6/netfilter/nf_reject_ipv6.c:12:
   include/linux/filter.h: In function 'bpf_jit_blinding_enabled':
>> include/linux/filter.h:1104:36: error: implicit declaration of function 'bpf_token_capable'; did you mean 'bpf_token_put'? [-Werror=implicit-function-declaration]
    1104 |         if (bpf_jit_harden == 1 && bpf_token_capable(prog->aux->token, CAP_BPF))
         |                                    ^~~~~~~~~~~~~~~~~
         |                                    bpf_token_put
   net/ipv6/netfilter/nf_reject_ipv6.c: In function 'nf_send_reset6':
   net/ipv6/netfilter/nf_reject_ipv6.c:287:25: warning: variable 'ip6h' set but not used [-Wunused-but-set-variable]
     287 |         struct ipv6hdr *ip6h;
         |                         ^~~~
   cc1: some warnings being treated as errors


vim +1104 include/linux/filter.h

  1091	
  1092	static inline bool bpf_jit_blinding_enabled(struct bpf_prog *prog)
  1093	{
  1094		/* These are the prerequisites, should someone ever have the
  1095		 * idea to call blinding outside of them, we make sure to
  1096		 * bail out.
  1097		 */
  1098		if (!bpf_jit_is_ebpf())
  1099			return false;
  1100		if (!prog->jit_requested)
  1101			return false;
  1102		if (!bpf_jit_harden)
  1103			return false;
> 1104		if (bpf_jit_harden == 1 && bpf_token_capable(prog->aux->token, CAP_BPF))
  1105			return false;
  1106	
  1107		return true;
  1108	}
  1109	

-- 
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https://github.com/intel/lkp-tests/wiki