(gdb) bt full
#0  0x000000000041d30f in ast_bridged_channel (chan=0x7acb60) at channel.c:3315
        bridged = (struct ast_channel *) 0x7ba9c0
#1  0x0000000000439ff2 in handle_chanlist (fd=1, argc=<value optimized out>, argv=<value optimized out>)
    at cli.c:431
        bc = <value optimized out>
        c = (struct ast_channel *) 0x7acb60
        durbuf = "\000\000\000\000\000\000\000\000\000"
        locbuf = "s@internal:1\000lt:1\000\000\000\000\000\000\000¦\212C\000\000\000\000\000¦?`\000\000\000\000"
        appdata = "(None)\0001723|1qdx)\000||60000)\000¦¦*\000\000\177\003\000\000\000\000\000"
        duration = <value optimized out>
        numchans = 5
        concise = 0
        verbose = 0
#2  0x000000000043a991 in ast_cli_command (fd=1, s=<value optimized out>) at cli.c:1390
        argv = {0x603ff0 "show", 0x603ff5 "channels", 0x0, 0x0,
  0xbe1ed0e6 <Address 0xbe1ed0e6 out of bounds>, 0x0, 0x4189946c <Address 0x4189946c out of bounds>, 0x0,
  0x3f0667f9 <Address 0x3f0667f9 out of bounds>, 0x0, 0x4340ebbd <Address 0x4340ebbd out of bounds>, 0x0,
  0x0, 0x0, 0x3f4ccccd <Address 0x3f4ccccd out of bounds>, 0x0,
  0x42798e15 <Address 0x42798e15 out of bounds>, 0x0,
  0x3fe0000000000000 <Address 0x3fe0000000000000 out of bounds>, 0x0, 0x0, 0x2aaaab3d1680 "",
  0xe <Address 0xe out of bounds>, 0x60a3d0 "show channels", 0x7fffffd61f90 "e", 0x0,
  0x6 <Address 0x6 out of bounds>, 0x2aaaab215b04 "H\205¦H\211¦tK\203=m¦\033", 0x7fffffd61f90 "e",
  0x2aaaab3d1680 "", 0x60bd50 "", 0x7fffffd620fc "\016", 0x603b20 "asterisk", 0x0,
---Type <return> to continue, or q <return> to quit---
  0x6 <Address 0x6 out of bounds>, 0x2aaaab213e9c "\203=¦\v\034", 0x609df0 "",
  0x4988cf "¦M,H\213\\$\bH\213l$\020H\203¦\030¦H\211\\$¦H\211l$¦L\211d$¦L\211l$¦H\203¦(H\211¦I\211¦I\211? ", 0x7fffffd61f90 "e", 0x60bd50 "", 0x7fffffd61f90 "e", 0x4989d6 "\213C,;C(~\004\205¦\177¦", 0x0,
  0x7fffffd61f90 "e", 0x60bcf0 "P¦`", 0x4992d2 "\211¦\203¦¦\017\204¦\004", 0x0,
  0x2aaaab259a7d "H\213D$\bH\203¦(H=\001¦¦¦s\001¦H\213\r¦S\027", 0x0, 0x2 <Address 0x2 out of bounds>, 0x0,
  0x5ee94a "", 0x600000 '¦' <repeats 32 times>, '*' <repeats 128 times>, '+' <repeats 40 times>...,
  0x60a3d0 "show channels", 0x7fffffd620fc "\016", 0x603b20 "asterisk", 0x0,
  0x6 <Address 0x6 out of bounds>, 0x3000000020 <Address 0x3000000020 out of bounds>,
  0x7fffffd61df0 "¦t?¦*", 0x7fffffd61d20 "0\035¦¦¦\177", 0x7fffffd61df0 "¦t?¦*", 0x7fffffd61d30 "",
  0x2aaaab259a7d "H\213D$\bH\203¦(H=\001¦¦¦s\001¦H\213\r¦S\027"}
        e = (struct ast_cli_entry *) 0x5ed500
        x = 2
        dup = 0x603ff0 "show"
        tws = 0
        __PRETTY_FUNCTION__ = "ast_cli_command"
#3  0x000000000046392d in main (argc=<value optimized out>, argv=<value optimized out>) at asterisk.c:993
        fd = <value optimized out>
        title = "Asterisk Console on 'pbx' (pid 12742)\000\000\000\033\235@\000\000\000\000\000\000\000\000\000u\032i\t\b\000\000\000\000\000\000\000¦^?¦*\000\000\000|?¦*\000\000¦\214?¦*\000\000p\037¦¦", '\0' <repeats 12 times>, "¦\211¦\a\000\000\002\000\220\226\032¦¦*\000\0000\035¦¦¦*\000\000¦\037¦¦¦\177\000\000¦\037¦¦¦\177\000\000\000\000\000\000\000\000\000\000{H\021\006\000\000\000\000¦\226\032¦¦*\000\000r#¦¦¦*\000\000¦\226\032¦¦*\000\000\001\000\000\000¦\177\000\000\000\000\000\000\000\000\000\000\001\000"...
        c = <value optimized out>
        filename = "/root/.asterisk_history", '\0' <repeats 56 times>
---Type <return> to continue, or q <return> to quit---
        hostname = "pbx", '\0' <repeats 60 times>
        tmp = "\033[1;37;40mAsterisk Ready.\n\033[0;37;40m\000\000\000\000¦\a\002\000\000\000\000\000w\227J\000\000\000\000\000¦W!¦¦*\000\000\221 ¦¦¦\177\000\000¦ ¦¦¦\177\000"
        xarg = 0x0
        x = <value optimized out>
        f = <value optimized out>
        sigs = {__val = {134238211, 0 <repeats 15 times>}}
        num = 14
        is_child_of_nonroot = 0
        buf = 0x60a3d0 "show channels"
        runuser = <value optimized out>
        rungroup = 0x0
        __PRETTY_FUNCTION__ = "main"