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Bug 634685

Summary:	Large POST may cause loop in mod_nss
Product:	Red Hat Enterprise Linux 5	Reporter:	Rob Crittenden <rcritten>
Component:	mod_nss	Assignee:	Rob Crittenden <rcritten>
Status:	CLOSED ERRATA	QA Contact:	Chandrasekar Kannan <ckannan>
Severity:	high	Docs Contact:
Priority:	high
Version:	5.6	CC:	alee, benl, csutherl, dpal, jgalipea, jmagne, kchamart, rcritten
Target Milestone:	rc
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	mod_nss-1.0.8-2.el5	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:	620856
Clones:	1084198 (view as bug list)		Environment:
Last Closed:	2011-01-13 22:38:44 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:	620856, 634687
Bug Blocks:	445047

Comment 2 Rob Crittenden 2010-09-24 15:23:36 UTC

We needed to reset the NSPR error code before calling PR_Read().

Comment 4 Kashyap Chamarthy 2010-10-06 05:42:16 UTC

Verification procedure:

1. Install a TPS
2. On the TPS UI, on the agent tab disable the userkey profile.   This
profile is large - so saving it will create large posts.
3. In the admin tab, edit this profile and save your changes, confirm
the changes etc.
4. Repeat step 3 multiple times.

If the bug is still there, then at some point, the cpu of httpd will go
very high (lie 100%) and will stay there for a long time. ( This used to
happen after the profile was saved maybe a couple of times.)

Comment 5 Kashyap Chamarthy 2010-10-06 07:16:55 UTC

Verified on RHEL5.6(x86_64)


From comment#4, after disabling 'userKey' profile I repeatedly edited several times & saved it. The %CPU utilization never exceeded 25%.(like below) 
################################################################
[root@cs81autoel5 ~]# top -p29971 -p29990 -p15607

  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                                                           
29971 root      18   0  295m  58m 3592 S  24.3  5.4   0:00.71 httpd.worker                                                                                                                           
29990 pkiuser   25   0  994m  61m 4072 S  0.0  5.6   0:04.65 httpd.worker                                                                                                                                      
15607 apache    25   0  199m 3576  728 S  0.0  0.3   0:00.00 httpd                                                                                                                                             [root@cs81autoel5 ~]#
################################################################

Version: mod_nss-1.0.8-2.el5
Build  : CS nightly build(Oct3)

Comment 7 errata-xmlrpc 2011-01-13 22:38:44 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-2011-0049.html