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Bug 651364

Summary:	gethostbyname2 returns 0.0.0.0 IPv4 address for hosts from LDAP on s390x
Product:	Red Hat Enterprise Linux 4	Reporter:	Ondrej Moriš <omoris>
Component:	nss_ldap	Assignee:	Nalin Dahyabhai <nalin>
Status:	CLOSED ERRATA	QA Contact:	Ondrej Moriš <omoris>
Severity:	high	Docs Contact:
Priority:	medium
Version:	4.9	CC:	dpal, jplans
Target Milestone:	rc
Target Release:	---
Hardware:	s390x
OS:	Linux
Whiteboard:
Fixed In Version:	nss_ldap-253-16.el4	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-02-16 14:03:05 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:	205243

Description Ondrej Moriš 2010-11-09 12:02:52 UTC

Description of problem:

Consider the following:

* nsswitch is configured to query ldap for hosts,
* nss_ldap is configured to use local OpenLDAP server and
* local OpenLDAP server contains the following:

dn: dc=example,dc=com
objectclass: top
objectclass: domain
dc: example

dn: cn=testhost.example.com,dc=example,dc=com
cn: testhost.example.com
objectClass: device
objectClass: ipHost
ipHostNumber: 172.31.0.1

Then host queries via getent or, for instance, gethostbyname2 function return wrong IPv4 address for the aforementioned "testhost":

# getent hosts
127.0.0.1       localhost.localdomain localhost
10.16.112.55    s390x-4as-v1.ss.eng.bos.redhat.com s390x-4as-v1
0.0.0.0         testhost.example.com

Version-Release number of selected component (if applicable):

nss_ldap-253-15.el4.s390x
nss_ldap-253-7.el4_8.4.s390x

How reproducible:

Always.

Steps to Reproduce:

See above or execute /CoreOS/nss_ldap/Regression/bz205243-gethostbyname2-queried-with-AF-INET6-IPv6-return.
  
Actual results:

0.0.0.0    testhost.example.com

Expected results:

172.31.0.1 testhost.example.com

Additional info:

This issue is only on s390x, the other architectures (i386, ia64, ppcp, x86_64 and s390x) are not affected.

Comment 2 Nalin Dahyabhai 2010-11-09 23:10:39 UTC

I need some help getting access to an s390x system.  Beaker's watchdog aborted my reserve one after about 3 hours.

Comment 7 errata-xmlrpc 2011-02-16 14:03:05 UTC

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2011-0239.html