Bug 757302

Summary: SIGABRT: Modules/gcmodule.c:275: visit_decref: Assertion > `gc->gc.gc_refs != 0' failed
Product: [Fedora] Fedora EPEL Reporter: Šimon Lukašík <slukasik>
Component: python-psycopg2Assignee: Devrim Gündüz <devrim>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: el5CC: a.badger, devrim, jhutar, jpazdziora
Target Milestone: ---Keywords: Patch
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 843723 (view as bug list) Environment:
Last Closed: 2012-08-13 03:00:42 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:    
Bug Blocks: 843723    
Attachments:
Description Flags
A backtrace
none
A proposed patch none

Description Šimon Lukašík 2011-11-26 08:26:14 UTC 
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:
Comment 1 Šimon Lukašík 2011-11-26 08:27:14 UTC 
Created attachment 536652 [details]
A backtrace
Comment 2 Šimon Lukašík 2011-11-26 08:29:17 UTC 
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
Comment 3 Jan Hutař 2012-03-15 12:26:59 UTC 
This was observed also on RHEL6 with python-psycopg2-2.0.14-1.el6_2.1
Comment 4 Jan Pazdziora 2012-07-25 11:57:50 UTC 
(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?
Comment 5 Toshio Ernie Kuratomi 2012-07-25 15:15:15 UTC 
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 6 Jan Hutař 2012-07-27 07:51:49 UTC 
(In reply to comment #4)
> (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?

I see, python-psycopg2 is in EPEL5 and RHEL6 (and not EPEL6). Cloned as bug 843723. Thanks for the ping here.
Comment 7 Fedora Update System 2012-07-27 18:24:00 UTC 
python-psycopg2-2.0.14-2.el5 has been submitted as an update for Fedora EPEL 5.
https://admin.fedoraproject.org/updates/python-psycopg2-2.0.14-2.el5
Comment 8 Toshio Ernie Kuratomi 2012-07-27 18:30:34 UTC 
Thanks for the bug report and extracting the fix.  See if this update works.
Comment 9 Fedora Update System 2012-07-27 22:06:41 UTC 
Package python-psycopg2-2.0.14-2.el5:
* should fix your issue,
* was pushed to the Fedora EPEL 5 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=epel-testing python-psycopg2-2.0.14-2.el5'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-EPEL-2012-6533/python-psycopg2-2.0.14-2.el5
then log in and leave karma (feedback).
Comment 10 Jan Pazdziora 2012-07-30 15:28:12 UTC 
My testing of Spacewalk with this new build shows that the problem is resolved. Thank you!
Comment 11 Fedora Update System 2012-08-13 03:00:42 UTC 
python-psycopg2-2.0.14-2.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.