(gdb) bt full
#0  0x401872a2 in mallopt () from /lib/libc.so.6
No symbol table info available.
#1  0x4018609f in free () from /lib/libc.so.6
No symbol table info available.
#2  0x40758d17 in spy_generate (chan=0x805f1cc, data=0x81dd718,
    len=-1115713564, samples=480) at app_chanspy.c:451
        data = (void *) 0x81de720
        samples = 136176784
        f = (struct ast_frame *) 0x3f0
        f0 = (struct ast_frame *) 0x0
        f1 = (struct ast_frame *) 0x81de0d0
        x = 1008
        vf = 240
        dlen = 1008
        maxsamp = 1
        loops = -1115713564
        csth = (struct chanspy_translation_helper *) 0x0
        f0 = (struct ast_frame *) 0x0
        vf = 240
        maxsamp = 1
        loops = -1115713564
        csth = (struct chanspy_translation_helper *) 0x0
#3  0x082105f0 in ?? ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#4  0x0820b3c8 in ?? ()
No symbol table info available.
#5  0x00000000 in ?? ()
No symbol table info available.
#6  0x4038e2d8 in sip_rtp_read (ast=0x81de720, p=0xbd7f8fe4) at chan_sip.c:2575
        ast = (struct ast_channel *) 0xff60ffd0
        p = (struct sip_pvt *) 0x140
        f = (struct ast_frame *) 0xbd7f902c
        null_frame = {frametype = 5, subclass = 0, datalen = 0, samples = 0,
  mallocd = 0, offset = 0, src = 0x0, data = 0x0, delivery = {tv_sec = 0,
    tv_usec = 0}, prev = 0x0, next = 0x0}
        null_frame = {frametype = 5, subclass = 0, datalen = 0, samples = 0,
  mallocd = 0, offset = 0, src = 0x0, data = 0x0, delivery = {tv_sec = 0,
    tv_usec = 0}, prev = 0x0, next = 0x0}
#7  0x00000001 in ?? ()
No symbol table info available.
#8  0x000000f0 in ?? ()
No symbol table info available.
#9  0x00000000 in ?? ()
No symbol table info available.
#10 0x081de720 in ?? ()
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#11 0xbd7f8fe4 in ?? ()
No symbol table info available.
#12 0x000001e0 in ?? ()
No symbol table info available.
#13 0x082105f0 in ?? ()
No symbol table info available.
#14 0x081dd718 in ?? ()
No symbol table info available.
#15 0x0805f1cc in ast_read (chan=0x407594f8) at channel.c:1552
        chan = (struct ast_channel *) 0x407588dc
        f = (struct ast_frame *) 0x6
        blah = 0
        prestate = 3
        func = (int (*)()) 0x403b9b28 <sip_methods+6888>
        data = (void *) 0x0
        res = -10420272
        null_frame = {frametype = 5, subclass = 0, datalen = 0, samples = 0,
  mallocd = 0, offset = 0, src = 0x0, data = 0x0, delivery = {tv_sec = 0,
    tv_usec = 0}, prev = 0x0, next = 0x0}
        f = (struct ast_frame *) 0x6
        blah = 0
        prestate = 3
        null_frame = {frametype = 5, subclass = 0, datalen = 0, samples = 0,
---Type <return> to continue, or q <return> to quit---
  mallocd = 0, offset = 0, src = 0x0, data = 0x0, delivery = {tv_sec = 0,
    tv_usec = 0}, prev = 0x0, next = 0x0}
#16 0x00000048 in ?? ()
No symbol table info available.
#17 0x00000003 in ?? ()
No symbol table info available.
#18 0x00000006 in ?? ()
No symbol table info available.
#19 0x082105f0 in ?? ()
No symbol table info available.
#20 0x080fb280 in dateformat ()
No symbol table info available.
#21 0x00000000 in ?? ()
No symbol table info available.
#22 0x00000000 in ?? ()
No symbol table info available.
#23 0x00000001 in ?? ()
No symbol table info available.
#24 0x00000001 in ?? ()
No symbol table info available.
#25 0x00000008 in ?? ()
No symbol table info available.
#26 0x00000000 in ?? ()
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#27 0xffffffff in ?? ()
No symbol table info available.
#28 0x206e754a in ?? ()
No symbol table info available.
#29 0x081dd718 in ?? ()
No symbol table info available.
#30 0x00000000 in ?? ()
No symbol table info available.
#31 0x00000005 in ?? ()
No symbol table info available.
#32 0xffffffff in ?? ()
No symbol table info available.
#33 0xbd7f8eb4 in ?? ()
No symbol table info available.
#34 0x4002bb11 in __pthread_unlock () from /lib/libpthread.so.0
No symbol table info available.
(gdb)