(gdb) bt full
#0  0x002c130b in strlen () from /lib/libc.so.6
No symbol table info available.
#1  0x00293f82 in vfprintf () from /lib/libc.so.6
No symbol table info available.
#2  0x002b24b4 in vsnprintf () from /lib/libc.so.6
No symbol table info available.
#3  0x080facad in ast_dynamic_str_thread_build_va (buf=0xb7b4b1f0, max_len=8192, ts=0x8157444, 
    append=0, fmt=0x1007744 "Peer '%s' is now UNREACHABLE! Time: %d\n", ap=0xb7b4b244 "9")
    at utils.c:1246
        res = 135501860
        offset = 0
        __PRETTY_FUNCTION__ = "ast_dynamic_str_thread_build_va"
#4  0x080ae31f in ast_log (level=2, file=0x1003cd3 "chan_iax2.c", line=8467, 
    function=0x100772c "__iax2_poke_noanswer", 
    fmt=0x1007744 "Peer '%s' is now UNREACHABLE! Time: %d\n") at logger.c:799
        __res = 3978108
        res = 16824812
        res = 45
        chan = (struct logchannel *) 0xa1230f0
        buf = (struct ast_dynamic_str *) 0xa1b5658
        t = 1193409894
        tm = {tm_sec = 54, tm_min = 44, tm_hour = 10, tm_mday = 26, tm_mon = 9, tm_year = 107, 
  tm_wday = 5, tm_yday = 298, tm_isdst = 1, tm_gmtoff = 0, tm_zone = 0x0}
        date = "Oct 26 10:44:54\000\000\000\000\000��\000\001@�\026\n�\000\000\000\020\000\000\000\234n7\000����N\003�\000\230�\000\001��\000\001\b����\002�\000|�<\000��\000\0018���<�\017\b(���\n", '\0' <repeats 11 times>, "(�����8\000 �8\000�0\033\nh�����+\000 �8\000�0\033\n�!\033\n�*\v\000S�!G�0\033\n", '\0' <repeats 12 times>, "��\000\001\000\000\000\000\220���\230���\016 \000\001�0\033\n\004\000\000\000\000\000\000\000����|�<\000\000\000\000\000\000\000\000"...
        ap = 0xb7b4b244 "9"
        __PRETTY_FUNCTION__ = "ast_log"
#5  0x00ff3c61 in __iax2_poke_noanswer (data=0xa1b37f8) at chan_iax2.c:8467
        peer = (struct iax2_peer *) 0xa1b37f8
        __PRETTY_FUNCTION__ = "__iax2_poke_noanswer"
#6  0x00ff2e92 in iax2_process_thread (data=0xa170778) at chan_iax2.c:8259
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {16824812, 0, -1212892272, 
        -1212894376, 778382512, -1724992440}, __mask_was_saved = 0}}, __pad = {0xb7b4b370, 
    0x0, 0xc, 0x0}}
        __cancel_routine = (void (*)(void *)) 0xff29af <iax2_process_thread_cleanup>
        __cancel_arg = (void *) 0xa170778
        not_first_call = 0
        thread = (struct iax2_thread *) 0xa170778
        tv = {tv_sec = -1212894440, tv_usec = 3979120}
        ts = {tv_sec = 0, tv_nsec = -1212892272}
        put_into_idle = 1
#7  0x080f9e58 in dummy_start (data=0xa16c5f0) at utils.c:806
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {4026356, 0, -1212892272, 
        -1212894264, 778382752, -1847721752}, __mask_was_saved = 0}}, __pad = {0xb7b4b480, 
    0x0, 0x0, 0x0}}
        __cancel_routine = (void (*)(void *)) 0x8068b6d <ast_unregister_thread>
        __cancel_arg = (void *) 0xb7b4bb90
        not_first_call = 0
        ret = (void *) 0x0
        a = {start_routine = 0xff2a29 <iax2_process_thread>, data = 0xa170778, 
  name = 0xa16b358 "iax2_process_thread  started at [ 8751] chan_iax2.c start_network_thread()"}
#8  0x003c82db in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#9  0x0032212e in clone () from /lib/libc.so.6
No symbol table info available.