gdb /home/radius/sbin/radiusd /root/crash/core.radiusd.1963_
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/radius/sbin/radiusd...done.
[New LWP 1993]
[New LWP 1992]
[New LWP 1990]
[New LWP 1963]
[New LWP 1991]
[New LWP 1989]

warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/radius/sbin/radiusd -x -f -l stdout'.
Program terminated with signal 11, Segmentation fault.
#0  0x00007f469fe42abd in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
(gdb)
(gdb)
(gdb) thread apply all bt

Thread 6 (Thread 0x7f469150e700 (LWP 1989)):
#0  0x00007f46a14c9fd0 in sem_wait () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x000000000042273c in request_handler_thread (arg=0x2c63380) at threads.c:499
#2  0x00007f46a14c3e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007f46a09d4ccd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f469050c700 (LWP 1991)):
#0  0x00007f46a14c9fd0 in sem_wait () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x000000000042273c in request_handler_thread (arg=0x2c8e150) at threads.c:499
#2  0x00007f46a14c3e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007f46a09d4ccd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f46a1b2e700 (LWP 1963)):
#0  0x00007f46a09ce033 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007f46a1700d10 in fr_event_loop (el=0x2ea4a70) at event.c:391
#2  0x0000000000409524 in main (argc=<optimized out>, argv=<optimized out>) at radiusd.c:421

Thread 3 (Thread 0x7f4690d0d700 (LWP 1990)):
#0  0x00007f46a14c9fd0 in sem_wait () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x000000000042273c in request_handler_thread (arg=0x2c633c0) at threads.c:499
#2  0x00007f46a14c3e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007f46a09d4ccd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f468fd0b700 (LWP 1992)):
#0  0x00007f46a14c9fd0 in sem_wait () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x000000000042273c in request_handler_thread (arg=0x2c8e190) at threads.c:499
#2  0x00007f46a14c3e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#3  0x00007f46a09d4ccd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f468f50a700 (LWP 1993)):
#0  0x00007f469fe42abd in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#1  0x00007f469fe485eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#2  0x00007f469fe485eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#3  0x00007f469fe12605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#4  0x00007f469fe478c0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#5  0x00007f469fe12605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#6  0x00007f469fe478c0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#7  0x00007f469fe12605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#8  0x00007f469fe478c0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#9  0x00007f469fe12605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
---Type <return> to continue, or q <return> to quit---
#10 0x00007f469fe478c0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#11 0x00007f469fe12605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#12 0x00007f469fe478c0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#13 0x00007f469fe485eb in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#14 0x00007f469fe12605 in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#15 0x00007f469fe127bd in ?? () from /usr/lib/libpython2.7.so.1.0
#16 0x00007f469fef6e83 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#17 0x00007f469ff3ca40 in PyObject_CallFunctionObjArgs () from /usr/lib/libpython2.7.so.1.0
#18 0x00007f46a02c2f80 in do_python (worker=1, funcname=0x7f46a02c37a5 "post_auth", pFunc=0x2dc26e0, request=0x2dd3160, inst=<optimized out>)
    at rlm_python.c:487
#19 do_python (request=0x2dd3160, pFunc=0x2dc26e0, funcname=0x7f46a02c37a5 "post_auth", worker=1, inst=<optimized out>) at rlm_python.c:393
#20 0x000000000041e1c1 in call_modsingle (request=0x2dd3160, component=7, sp=<optimized out>) at modcall.c:304
#21 modcall (component=7, c=0x2c922a0, request=<optimized out>) at modcall.c:684
#22 0x000000000041c9a3 in indexed_modcall (comp=7, idx=3, request=0x2dd3160) at modules.c:750
#23 0x00000000004127d5 in dhcp_process (request=0x2dd3160) at dhcpd.c:294
#24 0x000000000042bf5e in radius_handle_request (request=0x2dd3160, fun=0x412740 <dhcp_process>) at event.c:3817
#25 0x0000000000422aef in request_handler_thread (arg=0x2c8d430) at threads.c:544
#26 0x00007f46a14c3e9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#27 0x00007f46a09d4ccd in clone () from /lib/x86_64-linux-gnu/libc.so.6
#28 0x0000000000000000 in ?? ()