tree: https://github.com/multipath-tcp/mptcp_net-next.git export head: 400a354b7e2db1f6ffdf7bf8faefdfa8c0d45aee commit: 222f62c8bcf7a672e76939b8a02566eb5ded76ad [9/27] mptcp: sockopt: add SOL_IP freebind & transparent options config: hexagon-buildonly-randconfig-r006-20211112 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 63ef0e17e28827eae53133b3467bdac7d9729318) 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/multipath-tcp/mptcp_net-next/commit/222f62c8bcf7a672e7... git remote add mptcp https://github.com/multipath-tcp/mptcp_net-next.git git fetch --no-tags mptcp export git checkout 222f62c8bcf7a672e76939b8a02566eb5ded76ad # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): return ret; ^~~ net/mptcp/sockopt.c:625:9: note: initialize the variable 'ret' to silence this warning int ret, err; ^ = 0 1 error generated. vim +/ret +656 net/mptcp/sockopt.c 618 619 static int mptcp_setsockopt_sol_ip_set_transparent(struct mptcp_sock *msk, int optname, 620 sockptr_t optval, unsigned int optlen) 621 { 622 struct sock *sk = (struct sock *)msk; 623 struct inet_sock *issk; 624 struct socket *ssock; 625 int ret, err; 626 627 err = ip_setsockopt(sk, SOL_IP, optname, optval, optlen); 628 if (err != 0) 629 return err; 630 631 lock_sock(sk); 632 633 ssock = __mptcp_nmpc_socket(msk); 634 if (!ssock) { 635 release_sock(sk); 636 return -EINVAL; 637 } 638 639 issk = inet_sk(ssock->sk); 640 641 switch (optname) { 642 case IP_FREEBIND: 643 issk->freebind = inet_sk(sk)->freebind; 644 break; 645 case IP_TRANSPARENT: 646 issk->transparent = inet_sk(sk)->transparent; 647 break; 648 default: 649 release_sock(sk); 650 WARN_ON_ONCE(1); 651 return -EOPNOTSUPP; 652 } 653 654 sockopt_seq_inc(msk); 655 release_sock(sk); 657 } 658 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org