(gdb) bt full
#0  0x4017dc37 in vsnprintf () from /lib/libc.so.6
No symbol table info available.
#1  0x080c904d in ast_build_string_va (buffer=0x814adf4, space=0x8194010, 
    fmt=0x10 <Address 0x10 out of bounds>, 
    ap=0x80c90cd "\203€\020\211D$\004\213D$\004\203€\fÌ\203“\034\213D$ \211D$\030‚D$\f") at utils.c:540
        result = 1079819808
#2  0x080c90cd in ast_build_string (buffer=0x814adf0, space=0x8194010, 
    fmt=0xbd3f8978 "\230?\031\bË>\031\b\002") at utils.c:558
        ap = 0x405cbe20 "%s -- %s"
        result = -1119909468
#3  0x405c6a8c in skinny_call (ast=0x81691a8, dest=0x81695f0 "", timeout=36)
    at chan_skinny.c:1956
        ciddisplay = "\fš#@¬?\031\bË>\031\bP|\002@\002\000\000\000\"\000\000\000)\000\000\000„\205\030@h2\000\000\"\000\000\000ˆ"
        work = 0x5 <Address 0x5 out of bounds>
        size = 1
        res = 1081618764
        tone = 1076101280
        l = (struct skinny_line *) 0x18
        sub = (struct skinny_subchannel *) 0x402400b0
        session = (struct skinnysession *) 0x40024a2d
#4  0x080668d5 in ast_call (chan=0x0, addr=0x0, timeout=-1) at channel.c:2614
        res = 0
#5  0x4077cbd9 in dial_exec_full (chan=0x8193768, data=0xbd3fd71c, 
    peerflags=0xbd3f9520) at app_dial.c:1150
        res = -1
        u = (struct localuser *) 0x814b950
        tech = 0xbd3f8a3c "Skinny"
        number = 0xbd3f8a43 "500@eric"
        rest = 0x0
        cur = 0xbd3f8a3c "Skinny"
        privcid = '\0' <repeats 255 times>
        privintro = '\0' <repeats 1023 times>
        outgoing = (struct localuser *) 0x0
        tmp = (struct localuser *) 0x8193ee8
        peer = (struct ast_channel *) 0x0
        to = 0
        numbusy = 0
        numcongestion = 0
        numnochan = 0
        cause = 0
        numsubst = "500@eric", '\0' <repeats 71 times>
        restofit = '\0' <repeats 79 times>
        cidname = '\0' <repeats 79 times>
        toast = '\0' <repeats 79 times>
        newnum = 0x0
        l = 0x0
        privdb_val = 0
        calldurationlimit = 0
        config = {features_caller = {flags = 0}, features_callee = {flags = 0}, 
---Type <return> to continue, or q <return> to quit---
  start_time = {tv_sec = 0, tv_usec = 0}, feature_timer = 0, timelimit = 0, 
  play_warning = 0, warning_freq = 0, warning_sound = 0x0, end_sound = 0x0, 
  start_sound = 0x0, firstpass = 0, flags = 0}
        timelimit = 0
        play_warning = 0
        warning_freq = 0
        warning_sound = 0x0
        end_sound = 0x0
        start_sound = 0x0
        dtmfcalled = 0x0
        dtmfcalling = 0x0
        var = 0x0
        status = '\0' <repeats 255 times>
        play_to_caller = 0
        play_to_callee = 0
        sentringing = 0
        moh = 0
        outbound_group = 0x0
        macro_result = 0x0
        macro_transfer_dest = 0x0
        digit = 0
        result = 0
        start_time = 0
        answer_time = 0
        end_time = 0
        app = (struct ast_app *) 0x0
        parse = 0xbd3f8a3c "Skinny"
        args = {argc = 3, argv = 0xbd3f8ca0, peers = 0xbd3f8a3c "Skinny", 
  timeout = 0xbd3f8a4c "20", options = 0xbd3f8a4f "rt", url = 0x0}
        opts = {flags = 655360}
        opt_args = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}
#6  0x4077ed7e in dial_exec (chan=0x0, data=0x0) at app_dial.c:1649
        peerflags = {flags = 3175077660}
#7  0x08085c01 in pbx_exec (c=0x0, app=0x0, data=0x1, newstack=134779295)
    at pbx.c:553
        res = 135281248
        saved_c_appl = 0x8103ac4 "Newexten"
        saved_c_data = 0x2 <Address 0x2 out of bounds>
        execute = (int (*)(struct ast_channel *, 
    void *)) 0x808917a <pbx_extension_helper+1348>
#8  0x0808919f in pbx_extension_helper (c=0xbd3ff94c, con=0x0, context=0x0, 
    exten=0x808a470 "\203€ \203€\fÌ\203“\fj\002Øt$$j", priority=135870312, 
    label=0x0, callerid=0x81938b8 "default", action=135870892) at pbx.c:1697
        e = (struct ast_exten *) 0x81938b8
        app = (struct ast_app *) 0x1
        sw = (struct ast_switch *) 0x43207275
        data = 0x5 <Address 0x5 out of bounds>
        foundcontext = 0x1 <Address 0x1 out of bounds>
        newstack = 135886568
        res = 135304141
        status = 1
---Type <return> to continue, or q <return> to quit---
        incstack = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x40182d34 "\201̯é\v", 0x0, 
  0x0, 0x0, 0x0, 0x4023f60c " µ\022", 0xbd3ff96b "", 
  0xbd3ff774 "Û¿?¸p†\027@ÂÖ?¸Ç\225\020\bˆ¿?¸\034�?¸", 
  0x40183d92 "\213M\024\213U\b\205ƒ\211z\020\211z\f\211z\004t\037\213E\024\211r\030\211B\024\211B\b\213E\b1ñ\211\220\230", 
  0xbd3ff7ac "\001\200О\034�?¸\034�?¸\034�?¸\034�?¸6�?¸k�?¸\034�?¸k�?¸", 
  0xbd3ff91c "\005", 0xbd3ff96b "", 0x0, 0x0, 0x0, 0x0, 0x4023f60c " µ\022", 
  0x50 <Address 0x50 out of bounds>, 0xbd3ff91c "\005", 
  0xbd3ff8a4 "€¿?¸™b\026@\034�?¸P", 0x4017dc70 "\211å\213\205", 
  0xbd3ff7ac "\001\200О\034�?¸\034�?¸\034�?¸\034�?¸6�?¸k�?¸\034�?¸k�?¸", 
  0x81095ab "\"%s\" <%s>", 0xbd3ff8e0 "\030;\031\b\024", 0xbd3ff91c "\005", 0x0, 
  0x0, 0x0, 0x0, 0x0, 0x0, 0xbd3ff84c "", 
  0xbd3ff7ac "\001\200О\034�?¸\034�?¸\034�?¸\034�?¸6�?¸k�?¸\034�?¸k�?¸", 
  0xfbad8001 <Address 0xfbad8001 out of bounds>, 0xbd3ff91c "\005", 
  0xbd3ff91c "\005", 0xbd3ff91c "\005", 0xbd3ff91c "\005", 
  0xbd3ff936 "\030\bÜ?\026\bL�?¸", 0xbd3ff96b "", 0xbd3ff91c "\005", 0xbd3ff96b "", 
  0x0 <repeats 14 times>, 0xffffffff <Address 0xffffffff out of bounds>, 
  0x0 <repeats 13 times>, 0x4023c980 "", 0x0 <repeats 21 times>, 
  0x4023f60c " µ\022", 0xbd3ffbe0 "ˆž?¸", 0xbd3ff96c "ˆž?¸", 
  0xbd3ff8c4 "ïž?¸\aa\n\b\034�?¸P", 
  0x401662f4 "\213]Ÿ\211“]Ì\220\220\220\220\220U\211Œ\215E\020\203“\030\211D$\b\213E\f\211]Ÿ�u4ŸØ\201Ì™\222\r", 0xbd3ff91c "\005", 0x50 <Address 0x50 out of bounds>, 
  0x81095ab "\"%s\" <%s>", 0xbd3ff8d8 "ƒb\n\btx\031\b\030;\031\b\024", 0x0, 
  0x8193768 "SIP/artur-08190a98", 0xbd3ffbd4 "", 0x80a6107 "\203€ ‘T\213\204$Û", 
  0xbd3ff91c "\005", 0x50 <Address 0x50 out of bounds>, 0x81095ab "\"%s\" <%s>", 
  0x80a62c9 "\203€\020\213\204$Ê", 0x8197874 "", 0x8193b18 "", 
  0x14 <Address 0x14 out of bounds>, 0x0, 0x0, 0x3 <Address 0x3 out of bounds>, 
  0x81975a8 "\"Artur Cristianini\" <6246>", 0x1 <Address 0x1 out of bounds>, 
  0x81975a8 "\"Artur Cristianini\" <6246>", 0x814b9d0 "6246", 0x814b9d0 "6246", 
  0x1 <Address 0x1 out of bounds>}
        passdata = '\0' <repeats 16 times>, "Skinny/500@eric|20|rt", '\0' <repeats 8154 times>
        stacklen = 0
        tmp = '\0' <repeats 79 times>
        tmp2 = '\0' <repeats 79 times>
        tmp3 = '\0' <repeats 8191 times>
        atmp = '\0' <repeats 79 times>
        atmp2 = "\000\000\000\000ØØØØ", '\0' <repeats 8283 times>
#9  0x08163fd0 in ?? ()
No symbol table info available.
#10 0xbd3ff94c in ?? ()
No symbol table info available.
#11 0x00000000 in ?? ()
No symbol table info available.
#12 0x00000000 in ?? ()
No symbol table info available.
#13 0x0808a470 in ast_spawn_extension (c=0x1, context=0x0, exten=0x814b9d0 "6246", 
    priority=1, callerid=0xbd3ffbe0 "ˆž?¸") at pbx.c:2230
No locals.
#14 0x0808a927 in __ast_pbx_run (c=0x0) at pbx.c:2296
        firstpass = 0
---Type <return> to continue, or q <return> to quit---
        digit = 0
        exten = '\0' <repeats 255 times>
        pos = 134784382
        waittime = 256
        res = 0
        autoloopflag = 135576016
#15 0x0808b6c0 in pbx_thread (data=0x8193768) at pbx.c:2517
        c = (struct ast_channel *) 0x8193768
#16 0x40023cc4 in pthread_detach () from /lib/libpthread.so.0
No symbol table info available.
#17 0x401f0037 in clone () from /lib/libc.so.6
No symbol table info available.
(gdb)