Bug 472760

Summary:	large number division produces floating-point assist faults on ia64
Product:	Red Hat Enterprise Linux 5	Reporter:	Petr Šplíchal <psplicha>
Component:	python	Assignee:	Dave Malcolm <dmalcolm>
Status:	CLOSED WONTFIX	QA Contact:	BaseOS QE <qe-baseos-auto>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.3	CC:	ohudlick
Target Milestone:	rc
Target Release:	---
Hardware:	ia64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-03-14 21:36:13 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:

Description Petr Šplíchal 2008-11-24 12:51:44 UTC

Description of problem:
test_long_future.py (one of the python unit tests) produces floating-point assist faults on ia64 architecture.

Version-Release number of selected component (if applicable):
python-2.4.3-21.el5
python-2.4.3-24.el5

How reproducible:
Always

Steps to Reproduce:
from __future__ import division
huge = 1L << 40000
1L / huge
  
Actual results:
/var/log/messages: kernel: python(9903):
floating-point assist fault at ip 20000000003cd542, isr 0000020000001001

Expected results:
no floating-point assist faults

Additional info:
It seems that future implementation of division in python will need some adjustment to work on ia64 flawlessly.

For detailed description of FPA faults see:
http://i-cluster2.inrialpes.fr/doc/misc/fpswa.txt

Comment 2 RHEL Program Management 2009-03-26 17:22:08 UTC

This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".

Comment 5 RHEL Program Management 2013-03-14 21:36:13 UTC

Development Management has reviewed and declined this request.
You may appeal this decision by reopening this request.