tree:   git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git ti-rt-linux-5.10.y
head:   db1fc3876dcb4c685815a7c7ce518724ffd9d8b8
commit: e355bf097bb11257afeadf6665e51f224eeb93a7 [6649/6677] net: packet: Pass on redundant net info in packet_recvmsg
config: sparc64-buildonly-randconfig-r003-20210711 (attached as .config)
compiler: sparc64-linux-gcc (GCC) 9.3.0
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
        git remote add ti git://git.ti.com/ti-linux-kernel/ti-linux-kernel.git
        git fetch --no-tags ti ti-rt-linux-5.10.y
        git checkout e355bf097bb11257afeadf6665e51f224eeb93a7
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=sparc64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   In file included from include/linux/tcp.h:19,
                    from include/linux/ipv6.h:87,
                    from include/net/ipv6.h:12,
                    from include/linux/sunrpc/clnt.h:28,
                    from include/linux/nfs_fs.h:32,
                    from init/do_mounts.c:23:
   include/net/sock.h: In function 'sock_recv_redundant_info':
>> include/net/sock.h:2523:29: error: 'SCM_REDUNDANT' undeclared (first use in this function)
    2523 |   put_cmsg(msg, SOL_SOCKET, SCM_REDUNDANT, sizeof(*sred), sred);
         |                             ^~~~~~~~~~~~~
   include/net/sock.h:2523:29: note: each undeclared identifier is reported only once for each function it appears in
--
   In file included from fs/io_uring.c:64:
   include/net/sock.h: In function 'sock_recv_redundant_info':
>> include/net/sock.h:2523:29: error: 'SCM_REDUNDANT' undeclared (first use in this function)
    2523 |   put_cmsg(msg, SOL_SOCKET, SCM_REDUNDANT, sizeof(*sred), sred);
         |                             ^~~~~~~~~~~~~
   include/net/sock.h:2523:29: note: each undeclared identifier is reported only once for each function it appears in
   fs/io_uring.c: In function 'io_prep_async_work':
   fs/io_uring.c:1431:22: warning: variable 'id' set but not used [-Wunused-but-set-variable]
    1431 |  struct io_identity *id;
         |                      ^~
--
   In file included from include/linux/skmsg.h:12,
                    from kernel/bpf/btf.c:22:
   include/net/sock.h: In function 'sock_recv_redundant_info':
>> include/net/sock.h:2523:29: error: 'SCM_REDUNDANT' undeclared (first use in this function)
    2523 |   put_cmsg(msg, SOL_SOCKET, SCM_REDUNDANT, sizeof(*sred), sred);
         |                             ^~~~~~~~~~~~~
   include/net/sock.h:2523:29: note: each undeclared identifier is reported only once for each function it appears in
   kernel/bpf/btf.c: In function 'btf_seq_show':
   kernel/bpf/btf.c:5328:22: warning: function 'btf_seq_show' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
    5328 |  seq_vprintf((struct seq_file *)show->target, fmt, args);
         |                      ^~~~~~~~
   kernel/bpf/btf.c: In function 'btf_snprintf_show':
   kernel/bpf/btf.c:5365:2: warning: function 'btf_snprintf_show' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
    5365 |  len = vsnprintf(show->target, ssnprintf->len_left, fmt, args);
         |  ^~~
--
   In file included from include/linux/tcp.h:19,
                    from include/linux/ipv6.h:87,
                    from include/net/addrconf.h:50,
                    from lib/vsprintf.c:40:
   include/net/sock.h: In function 'sock_recv_redundant_info':
>> include/net/sock.h:2523:29: error: 'SCM_REDUNDANT' undeclared (first use in this function)
    2523 |   put_cmsg(msg, SOL_SOCKET, SCM_REDUNDANT, sizeof(*sred), sred);
         |                             ^~~~~~~~~~~~~
   include/net/sock.h:2523:29: note: each undeclared identifier is reported only once for each function it appears in
   lib/vsprintf.c: In function 'va_format':
   lib/vsprintf.c:1663:2: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
    1663 |  buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va);
         |  ^~~


vim +/SCM_REDUNDANT +2523 include/net/sock.h

  2514	
  2515	DECLARE_STATIC_KEY_FALSE(tcp_rx_skb_cache_key);
  2516	static inline void sock_recv_redundant_info(struct msghdr *msg, struct sock *sk,
  2517						    struct sk_buff *skb)
  2518	{
  2519		struct skb_redundant_info *sred;
  2520	
  2521		sred = skb_redinfo(skb);
  2522		if (sred->lsdu_size)
> 2523			put_cmsg(msg, SOL_SOCKET, SCM_REDUNDANT, sizeof(*sred), sred);
  2524	}
  2525	

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