(gdb) bt full
#0  ao2_ref (user_data=0x1, delta=-1) at astobj2.c:113
        current_value = -1
        __PRETTY_FUNCTION__ = "ao2_ref"
#1  0x0806fbdd in ao2_iterator_destroy (i=0xbe3faca4) at astobj2.c:594
No locals.
#2  0x4071c4cb in check_access (callno=45, sin=0xbe3ff9c4, ies=0xbe3ff8b4) at chan_iax2.c:6357
        __zz__ = 0x2 <Address 0x2 out of bounds>
        __dlen__ = 9
        res = -1
        version = 1
        user = (struct iax2_user *) 0x2d
        best = (struct iax2_user *) 0x0
        bestscore = 0
        gotcapability = 1
        v = (struct ast_variable *) 0x2
        tmpvar = (struct ast_variable *) 0x0
        i = {c = 0x1, flags = 0, bucket = -1103103008, c_version = 1073941760, obj = 0xbe3ffbe0, version = 1081465560}
        __PRETTY_FUNCTION__ = "check_access"
#3  0x40720c4a in socket_process (thread=0x8402240) at chan_iax2.c:8900
        orignative = -1103103820
        sin = {sin_family = 2, sin_port = 55569, sin_addr = {s_addr = 3074445143}, sin_zero = "\000\000\000\000\000\000\000"}
        res = 112
        updatehistory = 0
        new = 1
        ptr = (void *) 0x2d
        dcallno = 0
        decrypted = 0 '\0'
        mh = (struct ast_iax2_mini_hdr *) 0x84022c0
        cur = (struct iax_frame *) 0x1
        f = {frametype = AST_FRAME_IAX, subclass = 1, datalen = 0, samples = 0, mallocd = 0, mallocd_hdr_len = 0, offset = 0,
  src = 0x0, data = 0x0, delivery = {tv_sec = 0, tv_usec = 0}, frame_list = {next = 0x0}, flags = 0, ts = 0, len = 0, seqno = 0}
        c = (struct ast_channel *) 0x1
        dp = (struct iax2_dpcache *) 0x2d
        tpeer = (struct iax2_trunk_peer *) 0xbe3ff8b4
        rxtrunktime = {tv_sec = 0, tv_usec = 0}
        ies = {called_number = 0x84022d2 "9123", calling_number = 0x84022dc "123", calling_ani = 0x8402309 "123",
  calling_name = 0x84022eb "123: Some User 456", calling_ton = 0, calling_tns = 0, calling_pres = 0,
  called_context = 0x0, username = 0x8402312 "ast1418", password = 0x0, capability = 58376, format = 8,
  codec_prefs = 0x84022d8 "EL", language = 0x840230e "de", version = 2, adsicpe = 2, dnid = 0x0, rdnis = 0x0, authmethods = 0,
  encmethods = 0, challenge = 0x0, md5_result = 0x0, rsa_result = 0x0, apparent_addr = 0x0, refresh = 0, dpstatus = 0, callno = 0,
---Type <return> to continue, or q <return> to quit---
  cause = 0x0, causecode = 0 '\0', iax_unknown = 0 '\0', msgcount = -1, autoanswer = 0, musiconhold = 0, transferid = 0,
  datetime = 323910329, devicetype = 0x0, serviceident = 0x0, firmwarever = -1, fwdesc = 0, fwdata = 0x0, fwdatalen = 0 '\0',
  enckey = 0x0, enckeylen = 0 '\0', provver = 0, samprate = 1, provverpres = 0, rr_jitter = 0, rr_loss = 0, rr_pkts = 0,
  rr_delay = 0, rr_dropped = 0, rr_ooo = 0, calltoken = 0 '\0', calltokendata = 0x0}
        ied0 = {
  buf = '\0' <repeats 276 times>, "\200¥\002@\000\000\000\000\000\r\003@äõ?¾I \002@", '\0' <repeats 20 times>, "Üø?¾Äø?¾x\006\021@ ", '\0' <repeats 11 times>, "+\000\000\000+\000\000\000\200¥\002@\024ÿ\002@\000\r\003@,ö?¾I \002@\000\r\003@\b\000\000\000üÿÿÿ\000\000\000\000\000\000\000\000(ù?¾\020ù?¾x\006\021@ ", '\0' <repeats 11 times>, "+\000\000\000+\000\000\000(ù?¾\024ÿ\002@\020ù?¾\020ù?¾(ù?¾\000\r\003@\b\000\000\000üÿÿÿ\000\000\000\000\000\000\000\000\004¦\002@#\000\000\000F\002\000\000\020ù?¾+\000"..., pos = 0}
        ied1 = {buf = '\0' <repeats 1023 times>, pos = 0}
        format = 0
        fd = 15
        exists = 0
        minivid = 0
        empty = '\0' <repeats 31 times>
        host_pref_buf = '\0' <repeats 127 times>
        caller_pref_buf = '\0' <repeats 127 times>
        pref = {order = '\0' <repeats 31 times>, framing = '\0' <repeats 31 times>}
        __PRETTY_FUNCTION__ = "socket_process"
#4  0x40729a34 in iax2_process_thread (data=0x8402240) at chan_iax2.c:9972
        __res = (struct iax2_thread *) 0x4073ba68
        _buffer = {__routine = 0x4070eac0 <iax2_process_thread_cleanup>, __arg = 0x8402240, __canceltype = -1103103316,
  __prev = 0xbe3ffac4}
        tv = The value of variable 'tv' is distributed across several
locations, and GDB cannot access its value.