tree: git://git.infradead.org/users/hch/misc.git sockptr head: 5efaa769a4a54eadf2f4e2f21a1b4359cd7a5e9c commit: f036bed47a4ca956458369ce6caf93b1762468c6 [33/46] netfilter: switch nf_setsockopt to sockptr_t config: alpha-randconfig-s031-20200716 (attached as .config) compiler: alpha-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-49-g707c5017-dirty git checkout f036bed47a4ca956458369ce6caf93b1762468c6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) net/netfilter/ipvs/ip_vs_ctl.c:1379:27: sparse: sparse: dereference of noderef expression vim +2912 net/netfilter/ipvs/ip_vs_ctl.c ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2906 ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2907 ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2908 static struct nf_sockopt_ops ip_vs_sockopts = { ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2909 .pf = PF_INET, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2910 .set_optmin = IP_VS_BASE_CTL, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2911 .set_optmax = IP_VS_SO_SET_MAX+1, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 @2912 .set = do_ip_vs_set_ctl, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2913 .get_optmin = IP_VS_BASE_CTL, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2914 .get_optmax = IP_VS_SO_GET_MAX+1, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2915 .get = do_ip_vs_get_ctl, 16fcec35e7d7c4 net/ipv4/ipvs/ip_vs_ctl.c Neil Horman 2007-09-11 2916 .owner = THIS_MODULE, ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2917 }; ^1da177e4c3f41 net/ipv4/ipvs/ip_vs_ctl.c Linus Torvalds 2005-04-16 2918 :::::: The code at line 2912 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org