(gdb) bt full
#0  local_hangup (ast=Variable "ast" is not available.
) at chan_local.c:444
        p = (struct local_pvt *) 0xf0bb70
        isoutbound = 1
        f = {frametype = 4, subclass = 1, datalen = 0, samples = 0,
  mallocd = 0, offset = 0, src = 0x0, data = 0x0, delivery = {tv_sec = 0,
    tv_usec = 0}, prev = 0x0, next = 0x0}
        cur = (struct local_pvt *) 0x100
        prev = (struct local_pvt *) 0x100
        ochan = (struct ast_channel *) 0x0
        glaredetect = 0
#1  0x0000000000421768 in ast_hangup (chan=0x12e5380) at channel.c:1325
        res = 0
        __PRETTY_FUNCTION__ = "ast_hangup"
#2  0x0000000000446212 in __ast_pbx_run (c=0x12e5380) at pbx.c:2467
        digit = 0
        exten = '\0' <repeats 255 times>
        pos = 0
        waittime = 1080926352
        res = -1
        __PRETTY_FUNCTION__ = "__ast_pbx_run"
#3  0x00000000004477a9 in pbx_thread (data=Variable "data" is not available.
) at pbx.c:2517
No locals.
#4  0x000000379ef0610a in start_thread () from /lib64/tls/libpthread.so.0
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#5  0x000000379e4c6003 in clone () from /lib64/tls/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.