(gdb) bt full
#0  0x00007fe5650a2ed5 in raise () from /lib/libc.so.6
No symbol table info available.
#1  0x00007fe5650a43f3 in abort () from /lib/libc.so.6
No symbol table info available.
#2  0x00007fe5650df3a8 in ?? () from /lib/libc.so.6
No symbol table info available.
#3  0x00007fe5650e4948 in ?? () from /lib/libc.so.6
No symbol table info available.
#4  0x00007fe5650e6a56 in free () from /lib/libc.so.6
No symbol table info available.
#5  0x000000000043e8de in ast_set_callerid (chan=0x1ea71c0, callerid=0x7fe55c047d60 "", calleridname=0x0, ani=0x0) at channel.c:4106
        __PRETTY_FUNCTION__ = "ast_set_callerid"
#6  0x00007fe55b264f3d in event_handler () from /usr/lib/asterisk/modules/chan_dgv.so
No locals.
#7  0x00007fe55a442d34 in RaiseEvents_ThreadSafe () from /usr/lib/libdigivoice.so
No locals.
#8  0x00007fe55a4407d2 in Signal_GSM_Thread () from /usr/lib/libdigivoice.so
No locals.
#9  0x00007fe565aa0fc7 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#10 0x00007fe5651405ad in clone () from /lib/libc.so.6
No symbol table info available.
#11 0x0000000000000000 in ?? ()
No symbol table info available.