Bug 1038098

Summary: sssd_nss grows memory footprint when netgroups are requested
Product: Red Hat Enterprise Linux 6 Reporter: Rui Gouveia <rgouveia>
Component: sssdAssignee: Jakub Hrozek <jhrozek>
Status: CLOSED ERRATA QA Contact: Kaushik Banerjee <kbanerje>
Severity: high Docs Contact:
Priority: high    
Version: 6.4CC: dpal, ekeck, grajaiya, jgalipea, jhrozek, jkurik, lslebodn, mkosek, nkarandi, nobody, pbrezina, preichl, rgouveia, sreber
Target Milestone: rcKeywords: Reopened, ZStream
Target Release: 6.5   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: sssd-1.9.2-132.el6 Doc Type: Bug Fix
Doc Text:
Cause: Memory was not freed corectly Consequence: Memory growth if the application requesting netgroups was a long-running one Fix: Memory is freed corectly Result: Memory is no longer leaking even in long-running applications
 Story Points: ---
Clone Of: 1023409
: 1040969 (view as bug list) Environment:
Last Closed: 2014-10-14 04:47:23 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1023409    
Bug Blocks: 1040969, 1044905    
Attachments:
Description Flags
source code of reproducer none

Comment 1 Jakub Hrozek 2013-12-04 14:21:22 UTC 
The valgrind error was not related after all. We found out that we didn't free a memory context where we should, which resulted in memory growth if the application requesting netgroups was a long-running one.

To reproduce:
1) Run a process that requests a netgroup periodically but doesn't exit between the attempts. Maybe a deamon, python interpreter might do as well.
2) Watch the sssd_nss memory footprint grow
Comment 2 Jakub Hrozek 2013-12-04 14:24:37 UTC 
Upstream ticket:
https://fedorahosted.org/sssd/ticket/2170
Comment 3 Lukas Slebodnik 2013-12-04 15:00:40 UTC 
Created attachment 832692 [details]
source code of reproducer

Bug can be reproduced with attached example program.

gcc -Wall netgroup.c -o netgroup
./netgroup netgroup_name

Memory leak is reproducible also with non-existing netgroup.
RSS of sssd_nss process was increased about 200 MB in 3 minutes.
Comment 4 Jakub Hrozek 2013-12-10 11:10:43 UTC 
Fixed upstream:
 * master: 65f4003b93157b32eb0dcd6955d37dd009dc960e
 * sssd-1-11: 8696135e659685394937f81136521c676f0a0678
 * sssd-1-9: 34728310b600c700188b2679118a1af85bcdaaaf
Comment 8 Jakub Hrozek 2013-12-12 12:21:36 UTC 
The bug has been fixed upstream in all supported branches.
Comment 17 Nirupama Karandikar 2014-07-30 11:14:51 UTC 
Tested with sssd-1.11.6-12.el6.x86_64

Verified via beaker run.

https://beaker.engineering.redhat.com/jobs/707409
Comment 18 errata-xmlrpc 2014-10-14 04:47:23 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2014-1375.html