tree: https://github.com/cschaufler/smack-next next head: 322dd63c7f98315b5794653bc582d109841219ae commit: 322dd63c7f98315b5794653bc582d109841219ae [3/3] Smack: Use the netlabel cache config: xtensa-allyesconfig (attached as .config) compiler: xtensa-linux-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 git checkout 322dd63c7f98315b5794653bc582d109841219ae # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): security/smack/smack_lsm.c: In function 'smack_from_netlbl': 3866 | int rc = 0; | ^~ # https://github.com/cschaufler/smack-next/commit/322dd63c7f98315b5794653bc... git remote add cschaufler https://github.com/cschaufler/smack-next git fetch --no-tags cschaufler next git checkout 322dd63c7f98315b5794653bc582d109841219ae vim +/rc +3866 security/smack/smack_lsm.c 3848 3849 /** 3850 * smack_from_netlbl - Smack data from the IP options in an skb 3851 * @sk: socket data came in on 3852 * @family: address family 3853 * @skb: packet 3854 * 3855 * Find the Smack label in the IP options. If it hasn't been 3856 * added to the netlabel cache, add it here. 3857 * 3858 * Returns smack_known of the IP options or NULL if that won't work. 3859 */ 3860 static struct smack_known *smack_from_netlbl(struct sock *sk, u16 family, 3861 struct sk_buff *skb) 3862 { 3863 struct netlbl_lsm_secattr secattr; 3864 struct socket_smack *ssp = NULL; 3865 struct smack_known *skp = NULL; 3867 3868 netlbl_secattr_init(&secattr); 3869 3870 if (sk) 3871 ssp = sk->sk_security; 3872 3873 if (netlbl_skbuff_getattr(skb, family, &secattr) == 0) { 3874 skp = smack_from_secattr(&secattr, ssp); 3875 if (secattr.flags & NETLBL_SECATTR_CACHEABLE) 3876 rc = netlbl_cache_add(skb, family, &skp->smk_netlabel); 3877 } 3878 3879 netlbl_secattr_destroy(&secattr); 3880 3881 return skp; 3882 } 3883 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org