tree: git://git.infradead.org/users/hch/misc.git sockptr head: 65b86d5658a5bbb84fe436c27cf60a6efb6b5303 commit: 65b86d5658a5bbb84fe436c27cf60a6efb6b5303 [46/46] net: pass a sockptr_t into ->setsockopt config: i386-randconfig-s002-20200716 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.2-49-g707c5017-dirty git checkout 65b86d5658a5bbb84fe436c27cf60a6efb6b5303 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 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/mptcp/protocol.c:1531:24: sparse: sparse: context imbalance in 'mptcp_sk_clone' - unexpected unlock -- net/decnet/af_decnet.c:1325:27: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1325:27: sparse: sparse: got optval net/decnet/af_decnet.c:1340:9: sparse: sparse: Trying to use reserved word 'return' as identifier net/decnet/af_decnet.c:1340:16: sparse: sparse: Expected ; at end of declaration net/decnet/af_decnet.c:1340:16: sparse: sparse: got err net/decnet/af_decnet.c:1341:1: sparse: sparse: Expected ; at the end of type declaration net/decnet/af_decnet.c:1341:1: sparse: sparse: got } net/decnet/af_decnet.c:1360:20: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1360:20: sparse: sparse: got && net/decnet/af_decnet.c:1360:9: sparse: sparse: Trying to use reserved word 'if' as identifier net/decnet/af_decnet.c:1363:20: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1363:20: sparse: sparse: got > net/decnet/af_decnet.c:1363:9: sparse: sparse: Trying to use reserved word 'if' as identifier net/decnet/af_decnet.c:1366:30: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1366:30: sparse: sparse: got ( net/decnet/af_decnet.c:1366:9: sparse: sparse: Trying to use reserved word 'if' as identifier net/decnet/af_decnet.c:1369:9: sparse: sparse: Trying to use reserved word 'switch' as identifier net/decnet/af_decnet.c:1370:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1383:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1385:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1397:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1399:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1414:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1416:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1429:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1431:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1438:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1445:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1447:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1457:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1459:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1466:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1468:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1475:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1477:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1485:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1487:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1493:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1495:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1496:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1497:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1498:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1502:9: sparse: sparse: Trying to use reserved word 'return' as identifier net/decnet/af_decnet.c:1502:16: sparse: sparse: Expected ; at end of declaration net/decnet/af_decnet.c:1502:16: sparse: sparse: got 0 net/decnet/af_decnet.c:1503:1: sparse: sparse: Expected ; at the end of type declaration net/decnet/af_decnet.c:1503:1: sparse: sparse: got } net/decnet/af_decnet.c:1528:9: sparse: sparse: Trying to use reserved word 'return' as identifier net/decnet/af_decnet.c:1528:16: sparse: sparse: Expected ; at end of declaration net/decnet/af_decnet.c:1528:16: sparse: sparse: got err net/decnet/af_decnet.c:1529:1: sparse: sparse: Expected ; at the end of type declaration net/decnet/af_decnet.c:1529:1: sparse: sparse: got } net/decnet/af_decnet.c:1540:12: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1540:12: sparse: sparse: got ( net/decnet/af_decnet.c:1540:9: sparse: sparse: Trying to use reserved word 'if' as identifier net/decnet/af_decnet.c:1540:12: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1540:12: sparse: sparse: got "net/decnet/af_decnet.c" net/decnet/af_decnet.c:1540:12: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1540:12: sparse: sparse: got , net/decnet/af_decnet.c:1540:12: sparse: sparse: Expected ; at the end of type declaration net/decnet/af_decnet.c:1540:12: sparse: sparse: got } net/decnet/af_decnet.c:1543:9: sparse: sparse: Trying to use reserved word 'switch' as identifier net/decnet/af_decnet.c:1544:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1548:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1550:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1554:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1556:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1560:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1562:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1566:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1568:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1590:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1592:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1596:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1598:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1603:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1605:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1610:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1612:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1616:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1618:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1622:17: sparse: sparse: break/continue not in iterator scope net/decnet/af_decnet.c:1624:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1625:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1626:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1627:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1628:9: sparse: sparse: not in switch scope net/decnet/af_decnet.c:1632:9: sparse: sparse: Trying to use reserved word 'if' as identifier net/decnet/af_decnet.c:1639:9: sparse: sparse: Trying to use reserved word 'return' as identifier net/decnet/af_decnet.c:1639:16: sparse: sparse: Expected ; at end of declaration net/decnet/af_decnet.c:1639:16: sparse: sparse: got 0 net/decnet/af_decnet.c:1640:1: sparse: sparse: Expected ; at the end of type declaration net/decnet/af_decnet.c:1640:1: sparse: sparse: got } net/decnet/af_decnet.c:1648:19: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1648:19: sparse: sparse: got & net/decnet/af_decnet.c:1648:9: sparse: sparse: Trying to use reserved word 'if' as identifier net/decnet/af_decnet.c:1651:9: sparse: sparse: Expected ) in function declarator net/decnet/af_decnet.c:1651:9: sparse: sparse: got = net/decnet/af_decnet.c:1651:9: sparse: sparse: Expected ; at end of declaration net/decnet/af_decnet.c:1651:9: sparse: sparse: got != net/decnet/af_decnet.c:1651:9: sparse: sparse: too many errors -- net/dccp/proto.c:527:52: sparse: expected restricted __be32 const [usertype] service net/dccp/proto.c:573:55: sparse: sparse: incorrect type in argument 4 (invalid types) @@ expected union sockptr_t [usertype] optval @@ got char [noderef] __user *optval @@ net/dccp/proto.c:573:55: sparse: expected union sockptr_t [usertype] optval net/dccp/proto.c:573:55: sparse: got char [noderef] __user *optval net/dccp/proto.c:566:5: sparse: sparse: symbol 'dccp_setsockopt' redeclared with different type (incompatible argument 4 (different base types)): net/dccp/dccp.h:297:5: sparse: note: previously declared as: net/dccp/proto.c:710:57: sparse: sparse: incorrect type in argument 2 (different base types) @@ expected restricted __be32 [usertype] param @@ got int cmsg_type @@ net/dccp/proto.c:710:57: sparse: expected restricted __be32 [usertype] param net/dccp/proto.c:710:57: sparse: got int cmsg_type vim +1659 net/mptcp/protocol.c 79c0949e9a09f6 Peter Krystad 2020-01-21 1628 fd1452d8ef988d Florian Westphal 2020-07-05 1629 static int mptcp_setsockopt_sol_socket(struct mptcp_sock *msk, int optname, 65b86d5658a5bb Christoph Hellwig 2020-07-16 1630 sockptr_t optval, unsigned int optlen) fd1452d8ef988d Florian Westphal 2020-07-05 1631 { fd1452d8ef988d Florian Westphal 2020-07-05 1632 struct sock *sk = (struct sock *)msk; fd1452d8ef988d Florian Westphal 2020-07-05 1633 struct socket *ssock; fd1452d8ef988d Florian Westphal 2020-07-05 1634 int ret; fd1452d8ef988d Florian Westphal 2020-07-05 1635 fd1452d8ef988d Florian Westphal 2020-07-05 1636 switch (optname) { fd1452d8ef988d Florian Westphal 2020-07-05 1637 case SO_REUSEPORT: fd1452d8ef988d Florian Westphal 2020-07-05 1638 case SO_REUSEADDR: fd1452d8ef988d Florian Westphal 2020-07-05 1639 lock_sock(sk); fd1452d8ef988d Florian Westphal 2020-07-05 1640 ssock = __mptcp_nmpc_socket(msk); fd1452d8ef988d Florian Westphal 2020-07-05 1641 if (!ssock) { fd1452d8ef988d Florian Westphal 2020-07-05 1642 release_sock(sk); fd1452d8ef988d Florian Westphal 2020-07-05 1643 return -EINVAL; fd1452d8ef988d Florian Westphal 2020-07-05 1644 } fd1452d8ef988d Florian Westphal 2020-07-05 1645 65b86d5658a5bb Christoph Hellwig 2020-07-16 1646 ret = sock_setsockopt(ssock, SOL_SOCKET, optname, optval, 65b86d5658a5bb Christoph Hellwig 2020-07-16 1647 optlen); fd1452d8ef988d Florian Westphal 2020-07-05 1648 if (ret == 0) { fd1452d8ef988d Florian Westphal 2020-07-05 1649 if (optname == SO_REUSEPORT) fd1452d8ef988d Florian Westphal 2020-07-05 1650 sk->sk_reuseport = ssock->sk->sk_reuseport; fd1452d8ef988d Florian Westphal 2020-07-05 1651 else if (optname == SO_REUSEADDR) fd1452d8ef988d Florian Westphal 2020-07-05 1652 sk->sk_reuse = ssock->sk->sk_reuse; fd1452d8ef988d Florian Westphal 2020-07-05 1653 } fd1452d8ef988d Florian Westphal 2020-07-05 1654 release_sock(sk); fd1452d8ef988d Florian Westphal 2020-07-05 1655 return ret; fd1452d8ef988d Florian Westphal 2020-07-05 1656 } fd1452d8ef988d Florian Westphal 2020-07-05 1657 1bc49241714c4e Christoph Hellwig 2020-07-16 1658 return sock_setsockopt(sk->sk_socket, SOL_SOCKET, optname, 1bc49241714c4e Christoph Hellwig 2020-07-16 @1659 USER_SOCKPTR(optval), optlen); fd1452d8ef988d Florian Westphal 2020-07-05 1660 } fd1452d8ef988d Florian Westphal 2020-07-05 1661 :::::: The code at line 1659 was first introduced by commit :::::: 1bc49241714c4e3ee30a9081f589f0cb4a9cede2 net: switch sock_set_timeout to sockptr_t :::::: TO: Christoph Hellwig <hch(a)lst.de&gt; :::::: CC: Christoph Hellwig <hch(a)lst.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org