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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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