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Bug 1807110

Summary: rpc.gssd uses a lot of memory with krb5 mounts
Product: Red Hat Enterprise Linux 7 Reporter: Steve Dickson <steved>
Component: nfs-utilsAssignee: Steve Dickson <steved>
Status: CLOSED ERRATA QA Contact: Yongcheng Yang <yoyang>
Severity: high Docs Contact:
Priority: high    
Version: 7.8CC: cww, gcase, plambri, rhandlin, steved, swhiteho, toneata, xzhou, yoyang
Target Milestone: rcKeywords: Patch, ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: nfs-utils-1.3.0-0.67.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1528207
: 1809277 1828183 1828184 1828185 (view as bug list) Environment:
Last Closed: 2020-09-29 20:29:55 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: 1528207    
Bug Blocks: 1809277, 1828183, 1828184, 1828185    
Attachments:
Description Flags
The patch that closes the memory leaks
none
Updated patch that fixes memory leaks none

Comment 2 Steve Dickson 2020-02-25 15:58:38 UTC 
Created attachment 1665692 [details]
The patch that closes the memory leaks
Comment 5 Yongcheng Yang 2020-02-26 02:53:11 UTC 
(In reply to Steve Dickson from comment #2)
> Created attachment 1665692 [details]
> The patch that closes the memory leaks

Please NOTE this patch is a bit *different* with the one mentioned in:

https://bugzilla.redhat.com/show_bug.cgi?id=1528207#c38


Maybe we need this upstream commit also:

https://patchwork.kernel.org/patch/10935705/
Comment 6 Steve Whitehouse 2020-02-26 13:06:49 UTC 
I think 7.9 plus z-stream should be enough here, so I've updated the flags. Let me know if you disagree.
Comment 8 Steve Dickson 2020-02-26 16:13:24 UTC 
(In reply to Yongcheng Yang from comment #5)
> (In reply to Steve Dickson from comment #2)
> > Created attachment 1665692 [details]
> > The patch that closes the memory leaks
> 
> Please NOTE this patch is a bit *different* with the one mentioned in:
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=1528207#c38
this stop leaks during the mount

> 
> 
> Maybe we need this upstream commit also:
> 
> https://patchwork.kernel.org/patch/10935705/
This stop leaks in the error path which is why
it didn't show up in the testing. 

We could easy add it since it does apply cleaning...
Comment 9 Steve Dickson 2020-02-26 16:15:13 UTC 
(In reply to Steve Whitehouse from comment #6)
> I think 7.9 plus z-stream should be enough here, so I've updated the flags.
> Let me know if you disagree.

I wish you would reconsider... 

This needs to back to all supported z-streams...
Comment 11 Steve Dickson 2020-03-06 14:15:21 UTC 
Created attachment 1668114 [details]
Updated patch that fixes memory leaks

The updated  patch does fix the memory leaks on mounts
and non-error paths. There is the valgrind report after 
running the cthon tests simultaneously for a couple days. 

==00:18:09:53.849 2313== LEAK SUMMARY:
==00:18:09:53.849 2313==    definitely lost: 0 bytes in 0 blocks
==00:18:09:53.849 2313==    indirectly lost: 0 bytes in 0 blocks
==00:18:09:53.849 2313==      possibly lost: 0 bytes in 0 blocks
==00:18:09:53.849 2313==    still reachable: 100,413 bytes in 106 blocks
==00:18:09:53.849 2313==         suppressed: 0 bytes in 0 blocks
==00:18:09:53.849 2313== 
==00:18:09:53.849 2313== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)

When there is a rhel7.9 branch I will do the commit
Comment 22 errata-xmlrpc 2020-09-29 20:29:55 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 (nfs-utils bug fix and enhancement update), and where to find the updated
files, follow the link below.

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

https://access.redhat.com/errata/RHBA-2020:4002