Bug 402651

Summary: Openldap server crashes on high modify load
Product: Red Hat Enterprise Linux 4 Reporter: Jan Safranek <jsafrane>
Component: openldapAssignee: Jan Safranek <jsafrane>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 4.6CC: jplans
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: RHBA-2008-0701 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-07-24 19:51:01 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description Flags
reproducer
none
patch none

Description Jan Safranek 2007-11-28 13:20:53 UTC 
Version-Release number of selected component (if applicable):
openldap-servers-2.2.13-8.el4_6.1

How reproducible:
sometimes

Steps to Reproduce:
modify one attribute of one entry with multiple clients
  
Actual results:
slapd crashes

Expected results:
slapd lives

Additional info:
already fixed upstream:
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=3188

Check closely memory consumption, it's rumored (its#3213) that there is also
memory leak when two clients modify one attribute at the same time.
Comment 1 Jan Safranek 2007-11-28 13:27:28 UTC 
Created attachment 271291 [details]
reproducer

Usage:
- install opendlap-servers
- delete any previous ldap databases (rm -rf /var/lib/ldap/*)
- use the default slapd.conf, only uncomment line "rootpw secret"
- start ldap server
- start the script - it will spawn 20 processes, modifying one attribute in
endless loop

After some time slapd hopefully dies. You can stop the clients by "kill
`/tmp/test.pid`".
Comment 2 Jan Safranek 2007-11-28 13:30:50 UTC 
Created attachment 271311 [details]
patch
Comment 3 Jan Safranek 2007-11-28 14:02:25 UTC 
I did not notice any problem with the memory consumption, it seems to me there
is no leak.
Comment 4 RHEL Program Management 2007-11-29 03:54:38 UTC 
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
release.
Comment 10 errata-xmlrpc 2008-07-24 19:51:01 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-2008-0701.html