tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 
master
head:   e6934f3ec00b04234acb24a1a2c28af59763d3b5
commit: a00e74442bac5ad19a929d097370da7e07540ea6 [414/428] tcp/dccp: constify 
send_synack and send_reset socket argument
config: avr32-atngw100_defconfig (attached as .config)
reproduce:
  wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout a00e74442bac5ad19a929d097370da7e07540ea6
  # save the attached .config to linux build tree
  make.cross ARCH=avr32 

All warnings (new ones prefixed by >>):

   net/ipv6/tcp_ipv6.c: In function 'tcp_v6_reqsk_send_ack':
>> net/ipv6/tcp_ipv6.c:930: warning: passing argument 1 of 
>> 'tcp_v6_md5_do_lookup' discards qualifiers from pointer target type
   net/ipv6/tcp_ipv6.c:926: warning: passing argument 1 of 
'tcp_v6_md5_do_lookup' discards qualifiers from pointer target type

vim +/tcp_v6_md5_do_lookup +930 net/ipv6/tcp_ipv6.c

9c76a114b Wang Yufen               2014-03-29  914                      
tcptw->tw_ts_recent, tw->tw_bound_dev_if, tcp_twsk_md5_key(tcptw),
21858cd02 Florent Fourcot          2015-05-16  915                      
tw->tw_tclass, cpu_to_be32(tw->tw_flowlabel));
^1da177e4 Linus Torvalds           2005-04-16  916  
8feaf0c0a Arnaldo Carvalho de Melo 2005-08-09  917      inet_twsk_put(tw);
^1da177e4 Linus Torvalds           2005-04-16  918  }
^1da177e4 Linus Torvalds           2005-04-16  919  
a00e74442 Eric Dumazet             2015-09-29  920  static void 
tcp_v6_reqsk_send_ack(const struct sock *sk, struct sk_buff *skb,
6edafaaf6 Gui Jianfeng             2008-08-06  921                              
  struct request_sock *req)
^1da177e4 Linus Torvalds           2005-04-16  922  {
3a19ce0ee Daniel Lee               2014-05-11  923      /* sk->sk_state == 
TCP_LISTEN -> for regular TCP_SYN_RECV
3a19ce0ee Daniel Lee               2014-05-11  924       * sk->sk_state == 
TCP_SYN_RECV -> for Fast Open.
3a19ce0ee Daniel Lee               2014-05-11  925       */
0f85feae6 Eric Dumazet             2014-12-09  926      tcp_v6_send_ack(sk, 
skb, (sk->sk_state == TCP_LISTEN) ?
3a19ce0ee Daniel Lee               2014-05-11  927                      
tcp_rsk(req)->snt_isn + 1 : tcp_sk(sk)->snd_nxt,
0f85feae6 Eric Dumazet             2014-12-09  928                      
tcp_rsk(req)->rcv_nxt, req->rcv_wnd,
0f85feae6 Eric Dumazet             2014-12-09  929                      
tcp_time_stamp, req->ts_recent, sk->sk_bound_dev_if,
1d13a96c7 Florent Fourcot          2014-01-16 @930                      
tcp_v6_md5_do_lookup(sk, &ipv6_hdr(skb)->daddr),
1d13a96c7 Florent Fourcot          2014-01-16  931                      0, 0);
^1da177e4 Linus Torvalds           2005-04-16  932  }
^1da177e4 Linus Torvalds           2005-04-16  933  
^1da177e4 Linus Torvalds           2005-04-16  934  
^1da177e4 Linus Torvalds           2005-04-16  935  static struct sock 
*tcp_v6_hnd_req(struct sock *sk, struct sk_buff *skb)
^1da177e4 Linus Torvalds           2005-04-16  936  {
aa8223c7b Arnaldo Carvalho de Melo 2007-04-10  937      const struct tcphdr *th 
= tcp_hdr(skb);
52452c542 Eric Dumazet             2015-03-19  938      struct request_sock 
*req;

:::::: The code at line 930 was first introduced by commit
:::::: 1d13a96c74fc4802a775189ddb58bc6469ffdaa3 ipv6: tcp: fix flowlabel value 
in ACK messages send from TIME_WAIT

:::::: TO: Florent Fourcot <florent.four...@enst-bretagne.fr>
:::::: CC: David S. Miller <da...@davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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