gdb python core dump file : not in executable format: File format not

Tue Apr 15 05:39:26 EDT 2014

在 2014年4月15日星期二UTC+8上午3时37分58秒，david.... at gmail.com写道：
> Does this help?
>>> http://plasmodic.github.io/ecto/ecto/usage/external/debugging.html
>>>>>>> http://gnuradio.org/redmine/projects/gnuradio/wiki/TutorialsDebugging
>>>>>> http://downloads.conceptive.be/downloads/camelot/doc/sphinx/build/advanced/debug.html
>>>>> http://forums.gentoo.org/viewtopic-p-7123814.html
>>>>> On Mon, Apr 14, 2014 at 1:19 AM, Wesley <nis... at gmail.com> wrote:
>> Hi guys,
>>    Today I am debugging an issue related to memory leak.
>> I use gdb 7.7 and python 2.7.6 to generate one core dump file from production env.
>>>> And then, just use gdb to debug the coredump upon the same machine.
>> Got error that seems not support debug core file using pyton?
>>>> Here is snippet:
>> [root at localhost server]# gdb --core  memleak.core
>> GNU gdb (GDB) 7.7
>> Copyright (C) 2014 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-unknown-linux-gnu".
>> Type "show configuration" for configuration details.
>> For bug reporting instructions, please see:
>> <http://www.gnu.org/software/gdb/bugs/>.
>> Find the GDB manual and other documentation resources online at:
>> <http://www.gnu.org/software/gdb/documentation/>.
>> For help, type "help".
>> Type "apropos word" to search for commands related to "word".
>> [New LWP 25738]
>> [New LWP 25739]
>> [New LWP 25740]
>> [New LWP 25745]
>> [New LWP 25746]
>> [New LWP 25747]
>> [New LWP 25635]
>> Core was generated by `python'.
>> #0  0x00000030016e15e3 in ?? ()
>> (gdb) file /root/server/deviceserver.py
>> "/root/server/deviceserver.py": not in executable format: File format not recognized
>> (gdb) file /root/server/deviceserver
>> /root/server/deviceserver: No such file or directory.
>> (gdb) file /root/server/deviceserver.py
>> "/root/server/deviceserver.py": not in executable format: File format not recognized
>> (gdb)
>> --
>> https://mail.python.org/mailman/listinfo/python-list
>>>>>> -- 
> David Garvey

Yeah， I use gdb --args /usr/local/bin/python ../xxx.py --core xxx.core
Then, 'run' to start script.
However, the core dump file is actually from a memory leak process,which use 1.2 G momory, but now, through info proc, I got proc id, and then, shell pmap proc_id, only 650M, so, seems this is new started proc, not reload env from the core file.
Anything wrong?
Thanks.
Wesley