(gdb) bt full
#0  0x282975c1 in pthread_mutex_lock () from /usr/lib/libpthread.so.1
No symbol table info available.
#1  0x0805ddaa in ast_waitfor_nandfds (c=0xbded9898, n=1, fds=0x0, nfds=0, exception=0x0, outfd=0x0, ms=0xbded989c)
    at channel.c:996
        start = {tv_sec = 1104819219, tv_usec = 384334}
        end = {tv_sec = 1104819219, tv_usec = 397623}
        res = 22
        rms = 1
        x = 0
        y = 141214208
        max = 0
        spoint = 3
        now = 0
        whentohangup = 0
        havewhen = 0
        diff = 141214208
        winner = (struct ast_channel *) 0x0
        __PRETTY_FUNCTION__ = "ast_waitfor_nandfds"
#2  0x0805e5a5 in ast_waitfor (c=0x0, ms=1) at channel.c:1113
        oldms = 1
#3  0x28921ef4 in ?? ()
No symbol table info available.
#4  0x00000000 in ?? ()
No symbol table info available.
#5  0x00000001 in ?? ()
No symbol table info available.
#6  0xbded98c0 in ?? ()
No symbol table info available.
#7  0x28921ebf in ?? ()
No symbol table info available.
#8  0x086ac800 in ?? ()
No symbol table info available.
#9  0x00000000 in ?? ()
No symbol table info available.
#10 0x28363b5f in sys_nsig () from /lib/libc.so.5
No symbol table info available.
#11 0x289242c0 in ?? ()
No symbol table info available.
#12 0x00000001 in ?? ()
No symbol table info available.
#13 0x00000001 in ?? ()
No symbol table info available.
#14 0xbded9a70 in ?? ()
No symbol table info available.
#15 0x289225ef in ?? ()
No symbol table info available.
#16 0x08148800 in ?? ()
No symbol table info available.
#17 0x00000001 in ?? ()
No symbol table info available.
#18 0xbded98f0 in ?? ()
No symbol table info available.
#19 0xbded9974 in ?? ()
No symbol table info available.
#20 0x086958cc in ?? ()
No symbol table info available.
#21 0x00000003 in ?? ()
No symbol table info available.
#22 0x00504953 in ?? ()
No symbol table info available.
#23 0x70697274 in ?? ()
No symbol table info available.
#24 0x0066656c in ?? ()
No symbol table info available.
#25 0x00504953 in ?? ()
No symbol table info available.
#26 0x70697274 in ?? ()
No symbol table info available.
#27 0x6d66656c in ?? ()
No symbol table info available.
#28 0x00303600 in ?? ()
No symbol table info available.
#29 0x58585858 in ?? ()
No symbol table info available.
#30 0x58585858 in ?? ()
No symbol table info available.
#31 0x58585858 in ?? ()
No symbol table info available.
#32 0x58585858 in ?? ()
No symbol table info available.
#33 0x58585858 in ?? ()
No symbol table info available.
#34 0x58585858 in ?? ()
No symbol table info available.
#35 0x28005858 in ?? ()
No symbol table info available.
#36 0x08695800 in ?? ()
No symbol table info available.
#37 0x00000003 in ?? ()
No symbol table info available.
#38 0x0000004f in ?? ()
No symbol table info available.
#39 0x2829df0c in pthread_mutexattr_init () from /usr/lib/libpthread.so.1
No symbol table info available.
Previous frame inner to this frame (corrupt stack?)