tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   9c87c9f41245baa3fc4716cf39141439cf405b01
commit: b142083b585c2c03af24cca4d274f797796a4064 mptcp: MPTCP_KUNIT_TESTS 
should depend on MPTCP instead of selecting it
date:   4 weeks ago
config: arc-randconfig-r005-20201117 (attached as .config)
compiler: arceb-elf-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
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b142083b585c2c03af24cca4d274f797796a4064
        git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout b142083b585c2c03af24cca4d274f797796a4064
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/netronome/nfp/crypto/tls.c: In function 
'nfp_net_tls_rx_resync_req':
>> drivers/net/ethernet/netronome/nfp/crypto/tls.c:477:18: warning: variable 
>> 'ipv6h' set but not used [-Wunused-but-set-variable]
     477 |  struct ipv6hdr *ipv6h;
         |                  ^~~~~
   In file included from include/linux/compiler_types.h:65,
                    from <command-line>:
   drivers/net/ethernet/netronome/nfp/crypto/tls.c: In function 
'nfp_net_tls_add':
   include/linux/compiler_attributes.h:208:41: warning: statement will never be 
executed [-Wswitch-unreachable]
     208 | # define fallthrough                    
__attribute__((__fallthrough__))
         |                                         ^~~~~~~~~~~~~
   drivers/net/ethernet/netronome/nfp/crypto/tls.c:299:3: note: in expansion of 
macro 'fallthrough'
     299 |   fallthrough;
         |   ^~~~~~~~~~~

vim +/ipv6h +477 drivers/net/ethernet/netronome/nfp/crypto/tls.c

232eeb1f84eb2d4 Jakub Kicinski 2019-06-05  470  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  471  int 
nfp_net_tls_rx_resync_req(struct net_device *netdev,
6a35ddc5445a829 Jakub Kicinski 2019-12-17  472                                
struct nfp_net_tls_resync_req *req,
6a35ddc5445a829 Jakub Kicinski 2019-12-17  473                                
void *pkt, unsigned int pkt_len)
6a35ddc5445a829 Jakub Kicinski 2019-12-17  474  {
6a35ddc5445a829 Jakub Kicinski 2019-12-17  475          struct nfp_net *nn = 
netdev_priv(netdev);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  476          struct 
nfp_net_tls_offload_ctx *ntls;
6a35ddc5445a829 Jakub Kicinski 2019-12-17 @477          struct ipv6hdr *ipv6h;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  478          struct tcphdr *th;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  479          struct iphdr *iph;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  480          struct sock *sk;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  481          __be32 tcp_seq;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  482          int err;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  483  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  484          iph = pkt + 
req->l3_offset;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  485          ipv6h = pkt + 
req->l3_offset;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  486          th = pkt + 
req->l4_offset;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  487  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  488          if ((u8 *)&th[1] > (u8 
*)pkt + pkt_len) {
6a35ddc5445a829 Jakub Kicinski 2019-12-17  489                  
netdev_warn_once(netdev, "invalid TLS RX resync request (l3_off: %hhu l4_off: 
%hhu pkt_len: %u)\n",
6a35ddc5445a829 Jakub Kicinski 2019-12-17  490                                  
 req->l3_offset, req->l4_offset, pkt_len);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  491                  err = -EINVAL;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  492                  goto 
err_cnt_ign;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  493          }
6a35ddc5445a829 Jakub Kicinski 2019-12-17  494  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  495          switch (iph->version) {
6a35ddc5445a829 Jakub Kicinski 2019-12-17  496          case 4:
6a35ddc5445a829 Jakub Kicinski 2019-12-17  497                  sk = 
inet_lookup_established(dev_net(netdev), &tcp_hashinfo,
6a35ddc5445a829 Jakub Kicinski 2019-12-17  498                                  
             iph->saddr, th->source, iph->daddr,
6a35ddc5445a829 Jakub Kicinski 2019-12-17  499                                  
             th->dest, netdev->ifindex);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  500                  break;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  501  #if IS_ENABLED(CONFIG_IPV6)
6a35ddc5445a829 Jakub Kicinski 2019-12-17  502          case 6:
6a35ddc5445a829 Jakub Kicinski 2019-12-17  503                  sk = 
__inet6_lookup_established(dev_net(netdev), &tcp_hashinfo,
6a35ddc5445a829 Jakub Kicinski 2019-12-17  504                                  
                &ipv6h->saddr, th->source,
6a35ddc5445a829 Jakub Kicinski 2019-12-17  505                                  
                &ipv6h->daddr, ntohs(th->dest),
6a35ddc5445a829 Jakub Kicinski 2019-12-17  506                                  
                netdev->ifindex, 0);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  507                  break;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  508  #endif
6a35ddc5445a829 Jakub Kicinski 2019-12-17  509          default:
6a35ddc5445a829 Jakub Kicinski 2019-12-17  510                  
netdev_warn_once(netdev, "invalid TLS RX resync request (l3_off: %hhu l4_off: 
%hhu ipver: %u)\n",
6a35ddc5445a829 Jakub Kicinski 2019-12-17  511                                  
 req->l3_offset, req->l4_offset, iph->version);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  512                  err = -EINVAL;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  513                  goto 
err_cnt_ign;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  514          }
6a35ddc5445a829 Jakub Kicinski 2019-12-17  515  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  516          err = 0;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  517          if (!sk)
6a35ddc5445a829 Jakub Kicinski 2019-12-17  518                  goto 
err_cnt_ign;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  519          if 
(!tls_is_sk_rx_device_offloaded(sk) ||
6a35ddc5445a829 Jakub Kicinski 2019-12-17  520              sk->sk_shutdown & 
RCV_SHUTDOWN)
6a35ddc5445a829 Jakub Kicinski 2019-12-17  521                  goto 
err_put_sock;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  522  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  523          ntls = 
tls_driver_ctx(sk, TLS_OFFLOAD_CTX_DIR_RX);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  524          /* some FW versions 
can't report the handle and report 0s */
6a35ddc5445a829 Jakub Kicinski 2019-12-17  525          if 
(memchr_inv(&req->fw_handle, 0, sizeof(req->fw_handle)) &&
6a35ddc5445a829 Jakub Kicinski 2019-12-17  526              
memcmp(&req->fw_handle, &ntls->fw_handle, sizeof(ntls->fw_handle)))
6a35ddc5445a829 Jakub Kicinski 2019-12-17  527                  goto 
err_put_sock;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  528  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  529          /* copy to ensure 
alignment */
6a35ddc5445a829 Jakub Kicinski 2019-12-17  530          memcpy(&tcp_seq, 
&req->tcp_seq, sizeof(tcp_seq));
6a35ddc5445a829 Jakub Kicinski 2019-12-17  531          
tls_offload_rx_resync_request(sk, tcp_seq);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  532          
atomic_inc(&nn->ktls_rx_resync_req);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  533  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  534          sock_gen_put(sk);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  535          return 0;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  536  
6a35ddc5445a829 Jakub Kicinski 2019-12-17  537  err_put_sock:
6a35ddc5445a829 Jakub Kicinski 2019-12-17  538          sock_gen_put(sk);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  539  err_cnt_ign:
6a35ddc5445a829 Jakub Kicinski 2019-12-17  540          
atomic_inc(&nn->ktls_rx_resync_ign);
6a35ddc5445a829 Jakub Kicinski 2019-12-17  541          return err;
6a35ddc5445a829 Jakub Kicinski 2019-12-17  542  }
6a35ddc5445a829 Jakub Kicinski 2019-12-17  543  

:::::: The code at line 477 was first introduced by commit
:::::: 6a35ddc5445a8291ced6247a67977e110275acde nfp: tls: implement the stream 
sync RX resync

:::::: TO: Jakub Kicinski <jakub.kicin...@netronome.com>
:::::: CC: David S. Miller <da...@davemloft.net>

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

Attachment: .config.gz
Description: application/gzip

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