Hi Cong, [auto build test WARNING on net/master] [also WARNING on: v4.3 next-20151103]
url: https://github.com/0day-ci/linux/commits/Cong-Wang/ipv4-fix-a-potential-deadlock-in-mcast-getsockopt-path/20151104-055733 base: https://github.com/0day-ci/linux Cong-Wang/ipv4-fix-a-potential-deadlock-in-mcast-getsockopt-path/20151104-055733 config: avr32-atngw100_defconfig (attached as .config) reproduce: wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=avr32 All warnings (new ones prefixed by >>): net/ipv4/ip_sockglue.c: In function 'ip_getsockopt': >> net/ipv4/ip_sockglue.c:1504: warning: 'err' is used uninitialized in this >> function net/ipv4/ip_sockglue.c:1269: note: 'err' was declared here vim +/err +1504 net/ipv4/ip_sockglue.c 1488 return -EFAULT; 1489 if (copy_to_user(optval, &ucval, 1)) 1490 return -EFAULT; 1491 } else { 1492 len = min_t(unsigned int, sizeof(int), len); 1493 if (put_user(len, optlen)) 1494 return -EFAULT; 1495 if (copy_to_user(optval, &val, len)) 1496 return -EFAULT; 1497 } 1498 return 0; 1499 1500 out: 1501 release_sock(sk); 1502 if (needs_rtnl) 1503 rtnl_unlock(); > 1504 return err; 1505 } 1506 1507 int ip_getsockopt(struct sock *sk, int level, 1508 int optname, char __user *optval, int __user *optlen) 1509 { 1510 int err; 1511 1512 err = do_ip_getsockopt(sk, level, optname, optval, optlen, 0); --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
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