Bug 843723

Summary:	SIGABRT: Modules/gcmodule.c:275: visit_decref: Assertion > `gc->gc.gc_refs != 0' failed
Product:	Red Hat Enterprise Linux 6	Reporter:	Jan Hutař <jhutar>
Component:	python-psycopg2	Assignee:	Tom Lane <tgl>
Status:	CLOSED ERRATA	QA Contact:	qe-baseos-daemons
Severity:	medium	Docs Contact:
Priority:	high
Version:	6.3	CC:	a.badger, azelinka, devrim, hhorak, jhutar, jpazdziora, parsonsa, psklenar, redhat, slukasik
Target Milestone:	rc	Keywords:	Patch
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	757302	Environment:
Last Closed:	2013-02-21 08:41:44 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	757302
Bug Blocks:	791327

Description Jan Hutař 2012-07-27 07:50:11 UTC

+++ This bug was initially created as a clone of Bug #757302 +++

Description of problem:
There is a reference leak bug in python-psycopg2. Sadly, I cannot provide
narrow reproducer (without Spacewalk components).

Version-Release number of selected component (if applicable):
python-psycopg2-2.0.14-1.el5

How reproducible:
deterministic

Steps to Reproduce:
1. Install Spacewalk nightly (PostgreSQL variant) on RHEL5 (or equivalent)
2. Create some non-empty custom channels
3. # /usr/bin/rhn-satellite-exporter --channel=parent-qrywz \
   --channel=child-of-parent-qrywz --dir=/tmp/dump.errata.kgCvf28372

 
Actual results:
02:51:20 Gathering channel info...
Appending channels ['child-of-parent-qrywz', 'parent-qrywz']
02:51:20 Gathering binary RPM info...
python: Modules/gcmodule.c:275: visit_decref:
Assertion `gc->gc.gc_refs != 0' failed.
Aborted

Expected results:
Export should pass.

Additional info:

--- Additional comment from slukasik on 2011-11-26 03:27:14 EST ---

Created attachment 536652 [details]
A backtrace

--- Additional comment from slukasik on 2011-11-26 03:29:17 EST ---

Created attachment 536653 [details]
A proposed patch

This problem was actually fixed in upstream. The attached please find
an equivalent of upstream's commit: eaa97def731faa6fb9b17cfe9005d327f6a70341

--- Additional comment from jhutar on 2012-03-15 08:26:59 EDT ---

This was observed also on RHEL6 with python-psycopg2-2.0.14-1.el6_2.1

--- Additional comment from jpazdziora on 2012-07-25 07:57:50 EDT ---

(In reply to comment #3)
> This was observed also on RHEL6 with python-psycopg2-2.0.14-1.el6_2.1

Do we have a RHEL 6 version of this bugzilla?

--- Additional comment from a.badger on 2012-07-25 11:15:15 EDT ---

I don't work with the Python CAPI but a quick look at the patch seems sane.  I also checked that

* This is the only difference between typecast.c in 2.0.14 and typecast.c at the time of the upstream commit.
* The patch is still applied in upstream's current 2.4.4 release.

Devrim, I'll go ahead and apply and build tomorrow unless I hear otherwise from you.

Comment 2 Jan Pazdziora 2012-07-30 15:35:03 UTC

The change fixed the issues for the EPEL 5's python-psycopg2 package. It would be great to see it in RHEL 6 as well.

Comment 12 errata-xmlrpc 2013-02-21 08:41:44 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2013-0327.html