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    Subject[CHECKER] 2 user-pointer bugs in 2.6.0-test3

    Hi,

    Attached are 2 user-pointer bugs in 2.6.0-test3. As usual, confirmations
    or clarifications are welcomed.

    -Junfeng


    ---------------------------------------------------------
    [BUG] uioc_mimd = arg taints uioc_mimd, umc = uioc_mimd->mbox taints umc

    /u1/junfeng/linux-2.6.0-test3/drivers/scsi/megaraid.c:4606:mega_n_to_m:
    ERROR:TAINTED:4606:4606: dereferencing tainted ptr 'umc' [from='
    /u1/junfeng/linux-2.6.0-test3/include/asm/uaccess.h:copy_from_user:parm1
    arg uioc_mimd'] [Callstack: ]


    if( mc->cmd == MEGA_MBOXCMD_PASSTHRU ) {

    umc = (megacmd_t *)uioc_mimd->mbox;


    Error --->
    upthru = (mega_passthru *)umc->xferaddr;

    if( put_user(mc->status, (u8
    *)&upthru->scsistatus) )
    return (-EFAULT);

    ---------------------------------------------------------
    [BUG] optlen is dereferenced in function sctp_getsockopt_peer_addr_params

    /u1/junfeng/linux-2.6.0-test3/net/sctp/socket.c:3065:sctp_getsockopt:
    ERROR:TAINTED:3065:3065: passing tainted ptr 'optlen' into
    'sctp_getsockopt_peer_addr_params'
    [to='/u1/junfeng/linux-2.6.0-test3/net/sctp/socket.c:sctp_getsockopt_peer_addr_params:3']
    [from='
    /u1/junfeng/linux-2.6.0-test3/net/ipv4/ipmr.c:sctp_getsockopt:parm4']
    [Callstack:
    /u1/junfeng/linux-2.6.0-test3/net/ipv4/tcp.c:2450:sctp_getsockopt((tainted,
    4)(untainted, 0))]

    break;
    case SCTP_SOCKOPT_PEELOFF:
    retval = sctp_getsockopt_peeloff(sk, len, optval, optlen);
    break;
    case SCTP_GET_PEER_ADDR_PARAMS:

    Error --->
    retval = sctp_getsockopt_peer_addr_params(sk, len, optval,
    optlen);
    break;
    case SCTP_INITMSG:



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