Re: [PATCH net-next V10] net: Variable SLAAC: SLAAC with prefixes of arbitrary length in PIO

From: kernel test robot <lkp@intel.com>
To: Dmytro Shytyi <dmytro@shytyi.net>,
	Jakub Kicinski <kuba@kernel.org>,
	yoshfuji <yoshfuji@linux-ipv6.org>, kuznet <kuznet@ms2.inr.ac.ru>,
	liuhangbin <liuhangbin@gmail.com>, davem <davem@davemloft.net>,
	netdev <netdev@vger.kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>, ek <ek@google.com>,
	Jscherpelz <jscherpelz@google.com>
Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org
Subject: Re: [PATCH net-next V10] net: Variable SLAAC: SLAAC with prefixes of arbitrary length in PIO
Date: Thu, 14 Oct 2021 21:20:27 +0800	[thread overview]
Message-ID: <202110142153.3rvWWQW3-lkp@intel.com> (raw)
In-Reply-To: <17c7be50990.d8ff97ac1139678.6280958386678329804@shytyi.net>

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Hi Dmytro,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Dmytro-Shytyi/net-Variable-SLAAC-SLAAC-with-prefixes-of-arbitrary-length-in-PIO/20211014-072015
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 39e222bfd7f37e7a98069869375b903d7096c113
config: x86_64-randconfig-r013-20211014 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 6c76d0101193aa4eb891a6954ff047eda2f9cf71)
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://github.com/0day-ci/linux/commit/780991c4b4a62473ddc2bd73ea399061a1c41afd
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Dmytro-Shytyi/net-Variable-SLAAC-SLAAC-with-prefixes-of-arbitrary-length-in-PIO/20211014-072015
        git checkout 780991c4b4a62473ddc2bd73ea399061a1c41afd
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 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 >>):

>> net/ipv6/addrconf.c:3355:13: error: redefinition of 'ipv6_reserved_interfaceid'
   static bool ipv6_reserved_interfaceid(struct in6_addr address)
               ^
   net/ipv6/addrconf.c:2711:13: note: previous definition is here
   static bool ipv6_reserved_interfaceid(struct in6_addr address)
               ^
   1 error generated.

vim +/ipv6_reserved_interfaceid +3355 net/ipv6/addrconf.c

^1da177e4c3f41 Linus Torvalds       2005-04-16  3354  
622c81d57b392c Hannes Frederic Sowa 2015-03-23 @3355  static bool ipv6_reserved_interfaceid(struct in6_addr address)
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3356  {
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3357  	if ((address.s6_addr32[2] | address.s6_addr32[3]) == 0)
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3358  		return true;
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3359  
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3360  	if (address.s6_addr32[2] == htonl(0x02005eff) &&
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3361  	    ((address.s6_addr32[3] & htonl(0xfe000000)) == htonl(0xfe000000)))
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3362  		return true;
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3363  
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3364  	if (address.s6_addr32[2] == htonl(0xfdffffff) &&
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3365  	    ((address.s6_addr32[3] & htonl(0xffffff80)) == htonl(0xffffff80)))
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3366  		return true;
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3367  
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3368  	return false;
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3369  }
622c81d57b392c Hannes Frederic Sowa 2015-03-23  3370  

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

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