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Re: gdb unable to read python frame information

From dieter <dieter@handshake.de>
Subject Re: gdb unable to read python frame information
Date 2014-03-10 08:13 +0100
References (1 earlier) <87mwh2bi1v.fsf@handshake.de> <mailman.7900.1394198618.18130.python-list@python.org> <73e3cfa2-28d3-4647-8a7f-577e41dffbd1@googlegroups.com> <mailman.7932.1394288074.18130.python-list@python.org> <6dc8a38d-d3a6-44fd-8f39-f73cea1ac4c1@googlegroups.com>
Newsgroups comp.lang.python
Message-ID <mailman.7979.1394435643.18130.python-list@python.org> (permalink)

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Wesley <nispray@gmail.com> writes:

> So, let me clarify here, in order to try, I get a clean machine.
>
> Centos 6.5 64bit.
> Now , I try this:
> 1. install gdb 7.7 from source , with configure option --with-python
>
> 2. install python 2.6.6 from source, with configure option --with-pydebug
>
> 3. run a python script
>
> 4. from command line, gdb python -p <pid> to attach the running script
>
> 5. within gdb, issue python, import libpython, end 
>   no errors
> 6. py-bt outputs nothing, py-locals says Unable to locate python frame
> here is the snippet:
> [root@localhost Python-2.6.6]# gdb python 52315
> GNU gdb (GDB) 7.7
> ....
> Attaching to program: /home/nipen/test/Python-2.6.6/python, process 52315
> Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols found)...done.
> Loaded symbols for /lib64/ld-linux-x86-64.so.2
> 0x00000030a98e15c3 in ?? ()
> (gdb) bt
> #0  0x00000030a98e15c3 in ?? ()
> #1  0x00007f4cf68d1219 in ?? ()
> #2  0x0000000000000000 in ?? ()

This looks like a very strange backtrace on C level as well.

The most natural explanation would be: your process is in a very strange
state (due to some C level problem). But, of course, your
"gdb" might have general problems, as well.

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Thread

gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-06 18:03 -0800
  Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-07 08:10 +0100
    Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-07 02:29 -0800
      Re: gdb unable to read python frame information Ned Deily <nad@acm.org> - 2014-03-07 12:47 -0800
        Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-08 05:31 -0800
          Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-08 06:55 -0800
      Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-08 07:45 +0100
  Re: gdb unable to read python frame information Neal Becker <ndbecker2@gmail.com> - 2014-03-07 08:23 -0500
    Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-08 05:32 -0800
      Re: gdb unable to read python frame information Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-08 14:14 +0000
        Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-08 07:01 -0800
          Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-10 08:13 +0100
  Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-08 19:49 -0800
    Re: gdb unable to read python frame information Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-09 14:57 +0000
      Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-09 18:06 -0700
        Re: gdb unable to read python frame information Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-10 01:48 +0000
          Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-09 19:54 -0700
            Re: gdb unable to read python frame information Mark Lawrence <breamoreboy@yahoo.co.uk> - 2014-03-10 03:11 +0000
            Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-10 08:28 +0100
              Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-10 18:43 -0700
                Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-11 08:28 +0100
              Re: gdb unable to read python frame information Wesley <nispray@gmail.com> - 2014-03-10 20:01 -0700
                Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-11 08:31 +0100
        Re: gdb unable to read python frame information dieter <dieter@handshake.de> - 2014-03-10 08:16 +0100
    Re: gdb unable to read python frame information Terry Reedy <tjreedy@udel.edu> - 2014-03-09 14:37 -0400

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