netdev - Re: [net-next, v3, 07/10] net: sock: extend SO

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Date:   Wed, 16 Jun 2021 18:39:56 +0800
From:   kernel test robot <lkp@...el.com>
To:     Yangbo Lu <yangbo.lu@....com>, netdev@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, Yangbo Lu <yangbo.lu@....com>,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        mptcp@...ts.linux.dev, Richard Cochran <richardcochran@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Mat Martineau <mathew.j.martineau@...ux.intel.com>,
        Matthieu Baerts <matthieu.baerts@...sares.net>
Subject: Re: [net-next, v3, 07/10] net: sock: extend SO_TIMESTAMPING for PHC
 binding

Hi Yangbo,

I love your patch! Yet something to improve:

[auto build test ERROR on 89212e160b81e778f829b89743570665810e3b13]

url:    https://github.com/0day-ci/linux/commits/Yangbo-Lu/ptp-support-virtual-clocks-and-timestamping/20210616-141518
base:   89212e160b81e778f829b89743570665810e3b13
config: arm-randconfig-r023-20210615 (attached as .config)
compiler: arm-linux-gnueabi-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://github.com/0day-ci/linux/commit/f03864a45f4fe97414824545398c837eead55409
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Yangbo-Lu/ptp-support-virtual-clocks-and-timestamping/20210616-141518
        git checkout f03864a45f4fe97414824545398c837eead55409
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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

All errors (new ones prefixed by >>):

   net/mptcp/sockopt.c: In function 'mptcp_setsockopt_sol_socket_tstamp':
>> net/mptcp/sockopt.c:148:12: error: 'optval' redeclared as different kind of symbol
     148 |  sockptr_t optval = KERNEL_SOCKPTR(&val);
         |            ^~~~~~
   net/mptcp/sockopt.c:145:22: note: previous definition of 'optval' was here
     145 |            sockptr_t optval,
         |            ~~~~~~~~~~^~~~~~


vim +/optval +148 net/mptcp/sockopt.c

6f0d7198084c40 Florian Westphal 2021-04-15  142  
f03864a45f4fe9 Yangbo Lu        2021-06-15  143  static int mptcp_setsockopt_sol_socket_tstamp(struct mptcp_sock *msk,
f03864a45f4fe9 Yangbo Lu        2021-06-15  144  					      int optname, int val,
f03864a45f4fe9 Yangbo Lu        2021-06-15  145  					      sockptr_t optval,
f03864a45f4fe9 Yangbo Lu        2021-06-15  146  					      unsigned int optlen)
9061f24bf82ec2 Florian Westphal 2021-06-03  147  {
9061f24bf82ec2 Florian Westphal 2021-06-03 @148  	sockptr_t optval = KERNEL_SOCKPTR(&val);
9061f24bf82ec2 Florian Westphal 2021-06-03  149  	struct mptcp_subflow_context *subflow;
9061f24bf82ec2 Florian Westphal 2021-06-03  150  	struct sock *sk = (struct sock *)msk;
9061f24bf82ec2 Florian Westphal 2021-06-03  151  	int ret;
9061f24bf82ec2 Florian Westphal 2021-06-03  152  
9061f24bf82ec2 Florian Westphal 2021-06-03  153  	ret = sock_setsockopt(sk->sk_socket, SOL_SOCKET, optname,
9061f24bf82ec2 Florian Westphal 2021-06-03  154  			      optval, sizeof(val));
9061f24bf82ec2 Florian Westphal 2021-06-03  155  	if (ret)
9061f24bf82ec2 Florian Westphal 2021-06-03  156  		return ret;
9061f24bf82ec2 Florian Westphal 2021-06-03  157  
9061f24bf82ec2 Florian Westphal 2021-06-03  158  	lock_sock(sk);
9061f24bf82ec2 Florian Westphal 2021-06-03  159  	mptcp_for_each_subflow(msk, subflow) {
9061f24bf82ec2 Florian Westphal 2021-06-03  160  		struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
9061f24bf82ec2 Florian Westphal 2021-06-03  161  		bool slow = lock_sock_fast(ssk);
9061f24bf82ec2 Florian Westphal 2021-06-03  162  
9061f24bf82ec2 Florian Westphal 2021-06-03  163  		switch (optname) {
9061f24bf82ec2 Florian Westphal 2021-06-03  164  		case SO_TIMESTAMP_OLD:
9061f24bf82ec2 Florian Westphal 2021-06-03  165  		case SO_TIMESTAMP_NEW:
9061f24bf82ec2 Florian Westphal 2021-06-03  166  		case SO_TIMESTAMPNS_OLD:
9061f24bf82ec2 Florian Westphal 2021-06-03  167  		case SO_TIMESTAMPNS_NEW:
9061f24bf82ec2 Florian Westphal 2021-06-03  168  			sock_set_timestamp(sk, optname, !!val);
9061f24bf82ec2 Florian Westphal 2021-06-03  169  			break;
9061f24bf82ec2 Florian Westphal 2021-06-03  170  		case SO_TIMESTAMPING_NEW:
9061f24bf82ec2 Florian Westphal 2021-06-03  171  		case SO_TIMESTAMPING_OLD:
f03864a45f4fe9 Yangbo Lu        2021-06-15  172  			sock_set_timestamping(sk, optname, val, optval, optlen);
9061f24bf82ec2 Florian Westphal 2021-06-03  173  			break;
9061f24bf82ec2 Florian Westphal 2021-06-03  174  		}
9061f24bf82ec2 Florian Westphal 2021-06-03  175  
9061f24bf82ec2 Florian Westphal 2021-06-03  176  		unlock_sock_fast(ssk, slow);
9061f24bf82ec2 Florian Westphal 2021-06-03  177  	}
9061f24bf82ec2 Florian Westphal 2021-06-03  178  
9061f24bf82ec2 Florian Westphal 2021-06-03  179  	release_sock(sk);
9061f24bf82ec2 Florian Westphal 2021-06-03  180  	return 0;
9061f24bf82ec2 Florian Westphal 2021-06-03  181  }
9061f24bf82ec2 Florian Westphal 2021-06-03  182  

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