(gdb) bt full
#0  0x0808af65 in cli_next (i=0xb7827fd0) at cli.c:1085
        e = (struct ast_cli_entry *) 0xb6f3c5a0
#1  0x0808b57d in find_cli (cmds=0xb7828044, match_type=0) at cli.c:1185
        matchlen = 2
        cand = (struct ast_cli_entry *) 0x81571f4
        e = (struct ast_cli_entry *) 0x815cbf8
        i = {builtins = 0x8156a14, helpers = 0xb6f3c5a0}
#2  0x0808c98f in ast_cli_command (fd=11, s=0xb78281c0 "module unload app_playback.so") at cli.c:1697
        args = {0x81571f4 "8�\027\b?�\027\b", 0x820d160 "module", 0x820d167 "unload", 0x820d16e "app_playback.so", 0x0, 0x0, 0xb7828194 "��\022\b", 
  0xb78281c0 "module unload app_playback.so", 0x0, 0xb782810c "", 0x1ff <Address 0x1ff out of bounds>, 0xfbad8001 <Address 0xfbad8001 out of bounds>, 
  0xb78281c0 "module unload app_playback.so", 0xb78281c0 "module unload app_playback.so", 0xb78281c0 "module unload app_playback.so", 
  0xb78281c0 "module unload app_playback.so", 0xb78281de "", 0xb78283bf "bpolux", 0xb78281c0 "module unload app_playback.so", 0xb78283bf "bpolux", 0x0, 
  0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20657554 <Address 0x20657554 out of bounds>, 0x20000000 <Address 0x20000000 out of bounds>, 0x0, 
  0x3a36323a <Address 0x3a36323a out of bounds>, 0x55203831 <Address 0x55203831 out of bounds>, 0x32204354 <Address 0x32204354 out of bounds>, 
  0x363030 <Address 0x363030 out of bounds>, 0x0, 0x0, 0x0, 0xffffffff <Address 0xffffffff out of bounds>, 0x0, 0x0, 0x0, 0x0, 
  0x36690000 <Address 0x36690000 out of bounds>, 0x3638 <Address 0x3638 out of bounds>, 0x0, 0x0, 0x0, 0x0, 0xb7cac900 "", 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 
  0x0, 0x0, 0x0, 0x28000000 <Address 0x28000000 out of bounds>, 0x656e6f6e <Address 0x656e6f6e out of bounds>, 0x29 <Address 0x29 out of bounds>, 0x0, 0x0, 
  0x0, 0x0}
        e = (struct ast_cli_entry *) 0xb7828408
        x = 3
        res = 512
        dup = 0x820d160 "module"
#3  0x0806adf6 in netconsole (vconsole=0x816fb80) at asterisk.c:801
        con = (struct console *) 0x816fb80
        hostname = "polux", '\0' <repeats 58 times>
        tmp = "module unload app_playback.so\000\000Playback'\n\000\"1.0\" encoding=\"UTF-8\"?><stream:stream from=\"gmail.com\" id=\"6A6E0ECE1251B47B\" version=\"1.0\" xmlns:stream=\"http://etherx.jabber.org/streams\" xmlns=\"jabber:clie"...
        res = 30
        fds = {{fd = 11, events = 1, revents = 1}, {fd = 12, events = 1, revents = 0}}
        __PRETTY_FUNCTION__ = "netconsole"
#4  0x080fd365 in dummy_start (data=0x819faf8) at utils.c:545
        __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {-1209905164, 0, 0, -1216183176, 1216906256, -150613195}, __mask_was_saved = 0}}, __pad = {
    0xb78284b0, 0x0, 0x0, 0x0}}
        __cancel_routine = (void (*)(void *)) 0x80698d5 <ast_unregister_thread>
        __cancel_arg = (void *) 0xb7828ba0
        not_first_call = 0
        ret = (void *) 0x0
        a = {start_routine = 0x806ac07 <netconsole>, data = 0x816fb80, 
  name = 0x819cbc0 "netconsole", ' ' <repeats 11 times>, "started at [  866] asterisk.c listener()"}
#5  0xb7e1a504 in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
No symbol table info available.
#6  0xb7c4a51e in clone () from /lib/tls/i686/cmov/libc.so.6
No symbol table info available.