tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 
master
head:   927265bc6cd6374c9bafc43408ece4e92311b149
commit: 8afe97e5d4165c9d181d42504af3f96c8427659a [1099/1116] tunnels: support 
MPLS over IPv4 tunnels
config: m32r-usrv_defconfig (attached as .config)
compiler: m32r-linux-gcc (GCC) 4.9.0
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 8afe97e5d4165c9d181d42504af3f96c8427659a
        # save the attached .config to linux build tree
        make.cross ARCH=m32r 

All warnings (new ones prefixed by >>):

   net/ipv4/tunnel4.c: In function 'tunnel4_init':
>> net/ipv4/tunnel4.c:226:1: warning: label 'err_ipv6' defined but not used 
>> [-Wunused-label]
    err_ipv6:
    ^

vim +/err_ipv6 +226 net/ipv4/tunnel4.c

   210          if (inet_add_protocol(&tunnel4_protocol, IPPROTO_IPIP))
   211                  goto err_ipip;
   212  #if IS_ENABLED(CONFIG_IPV6)
   213          if (inet_add_protocol(&tunnel64_protocol, IPPROTO_IPV6))
   214                  goto err_ipv6;
   215  #endif
   216  #if IS_ENABLED(CONFIG_MPLS)
   217          if (inet_add_protocol(&tunnelmpls4_protocol, IPPROTO_MPLS))
   218                  goto err_mpls;
   219  #endif
   220          return 0;
   221  
   222  #if IS_ENABLED(CONFIG_IPV6)
   223  err_mpls:
   224          inet_del_protocol(&tunnel4_protocol, IPPROTO_IPV6);
   225  #endif
 > 226  err_ipv6:
   227          inet_del_protocol(&tunnel4_protocol, IPPROTO_IPIP);
   228  err_ipip:
   229          pr_err("%s: can't add protocol\n", __func__);
   230          return -EAGAIN;
   231  }
   232  
   233  static void __exit tunnel4_fini(void)
   234  {

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

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