Program terminated with signal 11, Segmentation fault.
#0  0x080f712f in ast_sched_del (con=0xb7e11fc0, id=3879325) at sched.c:267
267             AST_LIST_TRAVERSE_SAFE_BEGIN(&con->schedq, s, list) {
(gdb) bt full
#0  0x080f712f in ast_sched_del (con=0xb7e11fc0, id=3879325) at sched.c:267
        __list_next = (struct sched *) 0x63746e75
        __list_prev = (struct sched *) 0x9de8990
        __new_prev = (struct sched *) 0x63746e75
        s = (struct sched *) 0x63746e75
        __PRETTY_FUNCTION__ = "ast_sched_del"
#1  0x00c9317e in sip_scheddestroy (p=0xb772ea10, ms=32000) at chan_sip.c:2163
        _count = 0
        _sched_res = -1
        __PRETTY_FUNCTION__ = "sip_scheddestroy"
#2  0x00cd4f3d in handle_request (p=0xb772ea10, req=0xd46050, sin=0xd46040, recount=0xd46275, nounlock=0x2d8047) at chan_sip.c:15890
        cmd = 0x8140000 "set %ld\n"
        cseq = 0x0
        useragent = 0xffffffff <Address 0xffffffff out of bounds>
        seqno = 0
        len = 13917160
        ignore = 13583796
        respid = 16
        res = 13917752
        debug = 13455165
        e = 0xb772ea10 "\001"
        error = 32000
        __PRETTY_FUNCTION__ = "handle_request"
#3  0x00cd5cce in handle_request (p=0xb772ea10, req=0xd46050, sin=0xd46040, recount=0xd46034, nounlock=0xd46038) at chan_sip.c:16068
        cmd = 0xd4626c "REGISTER"
        cseq = 0xd46351 "62356 REGISTER"
        useragent = 0xd463a9 "SIP UA"
        seqno = 62356
        len = 5
        ignore = 2
        respid = 13177460
        res = 0
        debug = 1
        e = 0xd46275 "sip:172.172.172.2"
        error = 0
        __PRETTY_FUNCTION__ = "handle_request"
#4  0x00cd6a70 in sipsock_read (id=0x9d850a0, fd=14, events=1, ignore=0x0) at chan_sip.c:16298
        req = {rlPart1 = 0xd4626c "REGISTER", rlPart2 = 0xd46275 "sip:172.172.172.2", len = 359, headers = 11, method = 2, lines = 0, 
  flags = 21, header = {0xd4626c "REGISTER", 0xd46290 "Via: SIP/2.0/UDP 172.172.172.111:5060;branch=z9hG4bK29972", 
    0xd462cb "From: <sip:8013@172.172.172.2>;tag=04ab01e1351025279", 0xd46301 "To: <sip:8013@172.172.172.2>", 
    0xd4631f "Call-ID: 04ab01e1351015295@172.172.172.111", 0xd4634b "CSeq: 62356 REGISTER", 
    0xd46361 "Contact: <sip:8013@172.172.172.111:5060>", 0xd4638b "Max-Forwards: 70", 0xd4639d "User-Agent: SIP UA", 
    0xd463b1 "Expires: 60", 0xd463be "Content-Length: 0", 0xd463d1 "", 0x0 <repeats 52 times>}, line = {0xd463d3 "", 
    0x0 <repeats 63 times>}, 
  data = "REGISTER\000sip:172.172.172.2\000SIP/2.0\000\000Via: SIP/2.0/UDP 172.172.172.111:5060;branch=z9hG4bK29972\000\000From: <sip:8013@172.172.172.2>;tag=04ab01e1351025279\000\000To: <sip:8013@172.172.172.2>\000\000Call-ID: 04ab01e13510"..., sdp_start = 0, sdp_end = 0, 
  next = {next = 0x0}}
        sin = {sin_family = 2, sin_port = 50195, sin_addr = {s_addr = 1873587372}, sin_zero = "\000\000\000\000\000\000\000"}