Re: [PATCH v4 1/2] audit: add audit_log_packet_ip4 and audit_log_packet_ip6 helper functions

Hi Ricardo,

kernel test robot noticed the following build errors:

[auto build test ERROR on pcmoore-audit/next]
[also build test ERROR on netfilter-nf/main linus/master v6.18-rc3 next-20251031]
[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/Ricardo-Robaina/audit-add-audit_log_packet_ip4-and-audit_log_packet_ip6-helper-functions/20251031-220605
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit.git next
patch link:    https://lore.kernel.org/r/cfafc5247fbfcd2561de16bcff67c1afd5676c9e.1761918165.git.rrobaina%40redhat.com
patch subject: [PATCH v4 1/2] audit: add audit_log_packet_ip4 and audit_log_packet_ip6 helper functions
config: s390-randconfig-002-20251101 (https://download.01.org/0day-ci/archive/20251101/[email protected]/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project be2081d9457ed095c4a6ebe2a920f0f7b76369c6)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251101/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

>> net/netfilter/nft_log.c:48:10: error: call to undeclared function 'audit_log_packet_ip4'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      48 |                         fam = audit_log_packet_ip4(ab, skb) ? NFPROTO_IPV4 : -1;
         |                               ^
>> net/netfilter/nft_log.c:51:10: error: call to undeclared function 'audit_log_packet_ip6'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      51 |                         fam = audit_log_packet_ip6(ab, skb) ? NFPROTO_IPV6 : -1;
         |                               ^
   net/netfilter/nft_log.c:56:9: error: call to undeclared function 'audit_log_packet_ip4'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      56 |                 fam = audit_log_packet_ip4(ab, skb) ? NFPROTO_IPV4 : -1;
         |                       ^
   net/netfilter/nft_log.c:59:9: error: call to undeclared function 'audit_log_packet_ip6'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      59 |                 fam = audit_log_packet_ip6(ab, skb) ? NFPROTO_IPV6 : -1;
         |                       ^
   4 errors generated.


vim +/audit_log_packet_ip4 +48 net/netfilter/nft_log.c

    28	
    29	static void nft_log_eval_audit(const struct nft_pktinfo *pkt)
    30	{
    31		struct sk_buff *skb = pkt->skb;
    32		struct audit_buffer *ab;
    33		int fam = -1;
    34	
    35		if (!audit_enabled)
    36			return;
    37	
    38		ab = audit_log_start(NULL, GFP_ATOMIC, AUDIT_NETFILTER_PKT);
    39		if (!ab)
    40			return;
    41	
    42		audit_log_format(ab, "mark=%#x", skb->mark);
    43	
    44		switch (nft_pf(pkt)) {
    45		case NFPROTO_BRIDGE:
    46			switch (eth_hdr(skb)->h_proto) {
    47			case htons(ETH_P_IP):
  > 48				fam = audit_log_packet_ip4(ab, skb) ? NFPROTO_IPV4 : -1;
    49				break;
    50			case htons(ETH_P_IPV6):
  > 51				fam = audit_log_packet_ip6(ab, skb) ? NFPROTO_IPV6 : -1;
    52				break;
    53			}
    54			break;
    55		case NFPROTO_IPV4:
    56			fam = audit_log_packet_ip4(ab, skb) ? NFPROTO_IPV4 : -1;
    57			break;
    58		case NFPROTO_IPV6:
    59			fam = audit_log_packet_ip6(ab, skb) ? NFPROTO_IPV6 : -1;
    60			break;
    61		}
    62	
    63		if (fam == -1)
    64			audit_log_format(ab, " saddr=? daddr=? proto=-1");
    65	
    66		audit_log_end(ab);
    67	}
    68	

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