okay the problem here has to do with your config file:

your config should rather look something like this:

route[register]
{
        if (!t_newtran()) {    #absorb retransmissions
                sl_reply("500","Could not create transaction");
                exit;
        }
        if (!ims_www_authenticate(NETWORKNAME)) {
                if ($? == -2) {
                        t_reply("403", "Authentication Failed");
                        exit;
                } else if ($? == -3) {
                        t_reply("400", "Bad Request");
                        exit;
                } else {
                        #user has not been authenticated. Lets send a challenge via 401 Unauthorized
                        xlog("L_DBG","About to challenge! auth_ims\n");
                        ims_www_challenge("$td");
                        #this is async so to know status we have to check the reply avp
                        xlog("L_DBG","maa_return code is $avp(s:maa_return_code)\n");

                        switch ($avp(s:maa_return_code)){
                                case 1: #success
                                        xlog("L_DBG", "MAR success - 401/407 response sent from module");
                                        break;
                                case -1: #failure
                                        xlog("L_ERR", "MAR failure - error response sent from module");
                                        break;
                                case -2: #error
                                        xlog("L_ERR", "MAR error - sending error response now");
                                        t_reply("500", "MAR failed");
                                        break;
                                default:
                                        xlog("L_ERR", "Unknown return code from MAR, value is [$avp(s:uaa_return_code)]");
                                        t_reply("500", "Unknown response code from MAR");
                                        break;
                        }
                        exit;
                }
        }
        else {
            #HERE YOU ARE AUTHENTICATED       

        }


On Mon, Mar 18, 2013 at 4:30 PM, mrichardson <matt.richardson@interoptechnologies.com> wrote:
Date: Fri, 15 Mar 2013 08:44:13 +0100
From: Daniel-Constantin Mierla <miconda@gmail.com>
Subject: Re: [SR-Users] Problems with Mar portion of registration
        [IMS]
To: "Kamailio (SER) - Users Mailing List"
        <sr-users@lists.sip-router.org>
Message-ID: <5142D14D.7080808@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Hello,

I haven't played with IMS modules, but you said is causing scscf to die
-- is that a kamailio instance? What means 'to die' -- does it crash? If
yes, can you get the syslog messages and the gdb backtrace?

Cheers,
Daniel


============================================
Response:
============================================
It appears any way we force the scscf to process a mar causes a crash.


Core was generated by `/usr/sbin/kamailio -P /var/run/kamailio.pid -m 64 -M 4 -u kamailio -g kamailio'.
Program terminated with signal 11, Segmentation fault.
#0  async_cdp_callback (is_timeout=<value optimized out>, param=0x7f641b158e70, maa=0x7f641b159040,
    elapsed_msecs=<value optimized out>) at cxdx_mar.c:414
414      start_reg_await_timer(avlist[0]); //start the timer to remove stale or unused Auth Vectors
Missing separate debuginfos, use: debuginfo-install glibc-2.12-1.107.el6.x86_64 libxml2-2.7.6-8.el6_3.4.x86_64 nss-pam-ldapd-0.7.5-18.el6.x86_64 pcre-7.8-6.el6.x86_64 zlib-1.2.3-29.el6.x86_64
(gdb)



syslog:
 7(2211) DEBUG: tm [t_lookup.c:1657]: DEBUG: t_lookup_ident: transaction found
 7(2211) INFO: ims_auth [cxdx_avp.c:139]: cxdx_get_experimental_result_code: Failed finding avp
 7(2211) INFO: ims_auth [cxdx_avp.c:139]: cxdx_get_sip_number_auth_items: Failed finding avp
 7(2211) DEBUG: <core> [msg_translator.c:206]: check_via_address(10.12.92.191, 10.12.92.191, 0)
 7(2211) DEBUG: <core> [mem/shm_mem.c:111]: WARNING:vqm_resize: resize(0) called
 7(2211) DEBUG: tm [t_reply.c:1547]: DEBUG: cleanup_uac_timers: RETR/FR timers reset
 7(2211) DEBUG: tm [t_reply.c:706]: DEBUG: reply sent out. buf=0x7f64e586b950: SIP/2.0 403 Forbidde..., shmem=0x7f64de66c1b0: SIP/2.0 403 Forbidde
 7(2211) DEBUG: tm [t_reply.c:716]: DEBUG: _reply_light: finished
 0(2204) DEBUG: <core> [parser/msg_parser.c:623]: SIP Request:
 0(2204) DEBUG: <core> [parser/msg_parser.c:625]:  method:  <REGISTER>
 0(2204) DEBUG: <core> [parser/msg_parser.c:627]:  uri:     <sip:scscf.somecompany.com:6060>
 0(2204) DEBUG: <core> [parser/msg_parser.c:629]:  version: <SIP/2.0>
 0(2204) DEBUG: <core> [parser/msg_parser.c:170]: get_hdr_field: cseq <CSeq>: <5> <REGISTER>
 0(2204) DEBUG: <core> [parser/parse_to.c:799]: end of header reached, state=10
 0(2204) DEBUG: <core> [parser/msg_parser.c:190]: DEBUG: get_hdr_field: <To> [34]; uri=[sip:bob@somecompany.com]
 0(2204) DEBUG: <core> [parser/msg_parser.c:192]: DEBUG: to body ["bob" <sip:bob@somecompany.com>
]
 0(2204) DEBUG: <core> [parser/parse_via.c:1284]: Found param type 232, <branch> = <z9hG4bK1bd1.929b9c33.1>; state=16
 0(2204) DEBUG: <core> [parser/parse_via.c:2672]: end of header reached, state=5
 0(2204) DEBUG: <core> [parser/msg_parser.c:513]: parse_headers: Via found, flags=2
 0(2204) DEBUG: <core> [parser/msg_parser.c:515]: parse_headers: this is the first via
 0(2204) DEBUG: <core> [receive.c:149]: After parse_msg...
 0(2204) DEBUG: <core> [receive.c:190]: preparing to run routing scripts...
 0(2204) DEBUG: maxfwd [mf_funcs.c:85]: value = 15
 0(2204) DEBUG: <core> [parser/parse_via.c:1284]: Found param type 232, <branch> = <z9hG4bK1bd1.a11580a2575452ad784ca00f869952fb.0>; state=16
 0(2204) DEBUG: <core> [parser/parse_via.c:2672]: end of header reached, state=5
 0(2204) DEBUG: <core> [parser/msg_parser.c:513]: parse_headers: Via found, flags=1000
 0(2204) DEBUG: <core> [parser/msg_parser.c:526]: parse_headers: this is the second via
 0(2204) DEBUG: <core> [parser/parse_via.c:1284]: Found param type 232, <branch> = <z9hG4bK-333530-035cb8a7773aa017e8e89aa8db3c4f01>; state=16
 0(2204) DEBUG: <core> [parser/parse_via.c:2672]: end of header reached, state=5
 0(2204) DEBUG: <core> [parser/msg_parser.c:513]: parse_headers: Via found, flags=1000
 0(2204) DEBUG: <core> [parser/msg_parser.c:204]: DEBUG: get_hdr_body : content_length=0
 0(2204) DEBUG: <core> [parser/msg_parser.c:106]: found end of header
 0(2204) DEBUG: <core> [parser/parse_to.c:176]: DEBUG: add_param: tag=1f9be4d3
 0(2204) DEBUG: <core> [parser/parse_to.c:799]: end of header reached, state=29
 0(2204) DEBUG: sanity [mod_sanity.c:255]: sanity checks result: 1
 0(2204) DEBUG: siputils [checks.c:103]: no totag
 0(2204) DEBUG: <core> [select.c:425]: Calling SELECT 0x7f64e5839ea0
 0(2204) DEBUG: tm [t_lookup.c:1095]: DEBUG: t_check_msg: msg id=5 global id=4 T start=0xffffffffffffffff
 0(2204) DEBUG: tm [t_lookup.c:534]: t_lookup_request: start searching: hash=7601, isACK=0
 0(2204) DEBUG: tm [t_lookup.c:492]: DEBUG: RFC3261 transaction matching failed
 0(2204) DEBUG: tm [t_lookup.c:716]: DEBUG: t_lookup_request: no transaction found
 0(2204) DEBUG: tm [t_lookup.c:1164]: DEBUG: t_check_msg: msg id=5 global id=5 T end=(nil
 0(2204) ERROR: <script>: Enter register block 0(2204) DEBUG: tm [t_lookup.c:1395]: DEBUG: t_newtran: msg id=5 , global msg id=5 , T on entrance=(nil)
 0(2204) DEBUG: tm [t_lookup.c:534]: t_lookup_request: start searching: hash=7601, isACK=0
 0(2204) DEBUG: tm [t_lookup.c:492]: DEBUG: RFC3261 transaction matching failed
 0(2204) DEBUG: tm [t_lookup.c:716]: DEBUG: t_lookup_request: no transaction found
 0(2204) DEBUG: tm [t_hooks.c:374]: DBG: trans=0x7f64de66c4d0, callback type 1, id 0 entered
 0(2204) DEBUG: ims_auth [authorize.c:567]: Checking if REGISTER is authorized for realm [somecompany.com]...
 0(2204) DEBUG: ims_auth [authorize.c:597]: Nonce or response missing: nonce len [1910316154], response16 len[-440163170]
 0(2204) INFO: ims_auth [cxdx_mar.c:81]: created AVP successfully : [maa_return_code] - [-2]
 0(2204) DEBUG: ims_auth [authorize.c:298]: Need to challenge for realm [somecompany.com]
 0(2204) DEBUG: ims_auth [authorize.c:305]: Checking if REGISTER is authorized for realm [somecompany.com]...
 0(2204) DEBUG: ims_auth [authorize.c:435]: Suspending SIP TM transaction
 0(2204) DEBUG: ims_auth [authorize.c:1271]: Sending MAR
 0(2204) DEBUG: cdp [session.c:276]: adding a session with id scscf.somecompany.com;1782936534;5
 0(2204) DEBUG: cdp [routing.c:80]: get_first_connected_route in list 0x7f64de63dbc0 for app_id 16777216 and vendor_id 10415
 0(2204) DEBUG: cdp [routing.c:88]: The peer hss.somecompany.com state is opened
 0(2204) DEBUG: cdp [routing.c:63]: Checking if peer hss.somecompany.com handles application 16777216 for vendord 10415
 0(2204) DEBUG: cdp [routing.c:90]: The peer hss.somecompany.com matches - will forward there
 0(2204) DEBUG: cdp [peerstatemachine.c:91]: sm_process(): Peer hss.somecompany.com State I_Open Event Send_Message
 0(2204) DEBUG: cdp [peerstatemachine.c:1096]: Snd_Message called to peer [hss.somecompany.com] for request with code 303
 0(2204) DEBUG: cdp [session.c:297]: called get session with id scscf.somecompany.com;1782936534;5 and hash 111
 0(2204) DEBUG: cdp [session.c:306]: no session found
 0(2204) DEBUG: cdp [diameter_msg.c:83]: AAABuildMsgBuffer(): len=348
 0(2204) DEBUG: cdp [receiver.c:967]: peer_send_msg(): Pipe push [0x7f64de66edd0]
 0(2204) DEBUG: ims_auth [cxdx_mar.c:516]: Successfully sent async diameter
 0(2204) DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)
 0(2204) DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)
 0(2204) DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)
 0(2204) DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)
 0(2204) DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)
 0(2204) DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)
 0(2204) DEBUG: <core> [xavp.c:447]: destroying xavp list (nil)
 0(2204) DEBUG: <core> [receive.c:293]: receive_msg: cleaning up
10(2214) DEBUG: cdp [receiver.c:743]: select_recv(): There is something on the send pipe
10(2214) DEBUG: cdp [receiver.c:756]: select_recv(): Send pipe says [0x7f64de66edd0] 8
10(2214) DEBUG: cdp [diameter_msg.c:412]: AAAFreeMessage: Freeing message (0x7f64de66edd0) 303
10(2214) DEBUG: cdp [receiver.c:104]: --- Receiver [cdp_receiver_peer=hss.somecompany.com] Serviced Peers: ---
10(2214) DEBUG: cdp [receiver.c:110]:  Peer: [hss.somecompany.com]  TCP Socket: [15] Recv.State: [0]
10(2214) DEBUG: cdp [receiver.c:112]: --------------------------------------------------------
10(2214) DEBUG: cdp [receiver.c:104]: --- Receiver [cdp_receiver_peer=hss.somecompany.com] Serviced Peers: ---
10(2214) DEBUG: cdp [receiver.c:110]:  Peer: [hss.somecompany.com]  TCP Socket: [15] Recv.State: [1]
10(2214) DEBUG: cdp [receiver.c:112]: --------------------------------------------------------
10(2214) DEBUG: cdp [receiver.c:567]: receive_loop(): [hss.somecompany.com] Recv Version 1 Length 172
10(2214) DEBUG: cdp [receiver.c:104]: --- Receiver [cdp_receiver_peer=hss.somecompany.com] Serviced Peers: ---
10(2214) DEBUG: cdp [receiver.c:110]:  Peer: [hss.somecompany.com]  TCP Socket: [15] Recv.State: [2]
10(2214) DEBUG: cdp [receiver.c:112]: --------------------------------------------------------
10(2214) DEBUG: cdp [receiver.c:1061]: receive_message(): [hss.somecompany.com] Recv msg 303
10(2214) DEBUG: cdp [peerstatemachine.c:91]: sm_process(): Peer hss.somecompany.com State I_Open Event I_Rcv_Message
10(2214) DEBUG: cdp [session.c:297]: called get session with id scscf.somecompany.com;1782936534;5 and hash 111
10(2214) DEBUG: cdp [session.c:306]: no session found
10(2214) DEBUG: cdp [receiver.c:104]: --- Receiver [cdp_receiver_peer=hss.somecompany.com] Serviced Peers: ---
10(2214) DEBUG: cdp [receiver.c:110]:  Peer: [hss.somecompany.com]  TCP Socket: [15] Recv.State: [0]
10(2214) DEBUG: cdp [receiver.c:112]: --------------------------------------------------------
 0(2204) ALERT: <core> [main.c:788]: child process 2212 exited by a signal 11
 0(2204) ALERT: <core> [main.c:791]: core was generated
 0(2204) INFO: <core> [main.c:800]: INFO: dont_fork turned on, living on
 0(2204) ALERT: <core> [main.c:788]: child process 2211 exited by a signal 11
 0(2204) ALERT: <core> [main.c:791]: core was generated
 0(2204) INFO: <core> [main.c:800]: INFO: dont_fork turned on, living on







This is the modified register block to get a 401 unauthorized to even be generated (probably broken)….
route[REGISTER] {
        xlog("L_ERR", "Enter register block");
        t_newtran();

        if (!ims_www_authenticate(NETWORKNAME)) {
                ims_www_challenge("$td");
                exit;
        }

        if ($avp(maa_return_code) != 1 )  {
               if (!impu_registered("location")) {
                        save("location");
                        if ($avp(saa_return_code) == 1) {
                                 isc_match_filter_reg("0","location");
                                  exit;
                        }
               } else {
                        save("location");
                        if($avp(saa_return_code) == 1) {
                                 isc_match_filter_reg("1","location");
                                 exit;
                        }
                }
        }
}



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--
Jason Penton
Senior Manager: Applications and Services
Smile Communications
Johannesburg, South Africa
Phone: +27 83 283 7000

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