[ python-Bugs-1653121 ] Double free/corruption?

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Wed Feb 21 04:20:10 CET 2007


Bugs item #1653121, was opened at 2007-02-06 01:54
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Category: None
Group: Python 2.4
>Status: Closed
Resolution: None
Priority: 5
Private: No
Submitted By: Jarek Zgoda (zgoda)
Assigned to: Nobody/Anonymous (nobody)
Summary: Double free/corruption?

Initial Comment:
Today I encountered a problem with system complaining on double free/corruption, but as I don't know C, I cann't say it's a problem with Python or with MySQLdb.
Attached is a stack trace that I saw in screen session termination window. I am unable to reproduce this error, I tried few times, but it does not happen.

If this is a MySQLdb (or even MySQL) problem, I'll report the bug as appriopriate, just let me know.

The system is pretty standard FC4. Below is as some system information, let me know if I should provide you anything more.

$ python
Python 2.4.3 (#1, Jun 13 2006, 16:41:18)
[GCC 4.0.2 20051125 (Red Hat 4.0.2-8)] on linux2

$ uname -a
Linux localhost 2.6.17-1.2139_FC4smp #1 SMP Fri Jun 23 21:12:13 EDT 2006 i686 i686 i386 GNU/Linux

$ yum list installed glibc
Installed Packages
glibc.i686                               2.3.6-3

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>Comment By: SourceForge Robot (sf-robot)
Date: 2007-02-20 19:20

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This Tracker item was closed automatically by the system. It was
previously set to a Pending status, and the original submitter
did not respond within 14 days (the time period specified by
the administrator of this Tracker).

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Comment By: Jarek Zgoda (zgoda)
Date: 2007-02-06 03:24

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Thank you, will try my luck with MySQLdb.

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Comment By: Tim Peters (tim_one)
Date: 2007-02-06 02:31

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Since the top 6 or 7 stack entries are all in
/usr/lib/mysql/libmysqlclient_r.so.14, and shows it trying to using its
own free() function (my_no_flags_free()), it's almost certainly a problem
in the extension module (as opposed to in Python).

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