tree: https://github.com/multipath-tcp/mptcp_net-next.git export head: d15532665bd1e4a0e210110b275658ba4fcb5b87 commit: 7619397044315f5289200ea122ce4aac316d30da [1339/1352] mptcp: add rm_list in mptcp_out_options config: i386-randconfig-m021-20210209 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; smatch warnings: net/mptcp/options.c:687 mptcp_established_options_rm_addr() error: uninitialized symbol 'align'. vim +/align +687 net/mptcp/options.c 5cb104ae55e9db Geliang Tang 2020-09-24 668 static bool mptcp_established_options_rm_addr(struct sock *sk, 5cb104ae55e9db Geliang Tang 2020-09-24 669 unsigned int *size, 5cb104ae55e9db Geliang Tang 2020-09-24 670 unsigned int remaining, 5cb104ae55e9db Geliang Tang 2020-09-24 671 struct mptcp_out_options *opts) 5cb104ae55e9db Geliang Tang 2020-09-24 672 { 5cb104ae55e9db Geliang Tang 2020-09-24 673 struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk); 5cb104ae55e9db Geliang Tang 2020-09-24 674 struct mptcp_sock *msk = mptcp_sk(subflow->conn); 7619397044315f Geliang Tang 2021-02-12 675 struct mptcp_rm_list rm_list; 7619397044315f Geliang Tang 2021-02-12 676 u8 i, align; 5cb104ae55e9db Geliang Tang 2020-09-24 677 5cb104ae55e9db Geliang Tang 2020-09-24 678 if (!mptcp_pm_should_rm_signal(msk) || 7619397044315f Geliang Tang 2021-02-12 679 !(mptcp_pm_rm_addr_signal(msk, remaining, &rm_list))) 5cb104ae55e9db Geliang Tang 2020-09-24 680 return false; 5cb104ae55e9db Geliang Tang 2020-09-24 681 7619397044315f Geliang Tang 2021-02-12 682 if (rm_list.nr > 1) 7619397044315f Geliang Tang 2021-02-12 683 align = 5; 7619397044315f Geliang Tang 2021-02-12 684 if (rm_list.nr > 5) 7619397044315f Geliang Tang 2021-02-12 685 align = 9; Can rm_list.nr be zero? Smatch will hopefully know the answer if you have the cross function DB built, but hopefully eventually we will turn these warnings on for GCC again. 7619397044315f Geliang Tang 2021-02-12 686 7619397044315f Geliang Tang 2021-02-12 @687 if (remaining < TCPOLEN_MPTCP_RM_ADDR_BASE + align) 5cb104ae55e9db Geliang Tang 2020-09-24 688 return false; 5cb104ae55e9db Geliang Tang 2020-09-24 689 7619397044315f Geliang Tang 2021-02-12 690 *size = TCPOLEN_MPTCP_RM_ADDR_BASE + align; 5cb104ae55e9db Geliang Tang 2020-09-24 691 opts->suboptions |= OPTION_MPTCP_RM_ADDR; 7619397044315f Geliang Tang 2021-02-12 692 opts->rm_list = rm_list; 5cb104ae55e9db Geliang Tang 2020-09-24 693 7619397044315f Geliang Tang 2021-02-12 694 for (i = 0; i < opts->rm_list.nr; i++) 7619397044315f Geliang Tang 2021-02-12 695 pr_debug("rm_list_ids[%d]=%d", i, opts->rm_list.ids[i]); 5cb104ae55e9db Geliang Tang 2020-09-24 696 5cb104ae55e9db Geliang Tang 2020-09-24 697 return true; 5cb104ae55e9db Geliang Tang 2020-09-24 698 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org