Bug 453269 - autofs uses 100% CPU
autofs uses 100% CPU
Status: CLOSED WONTFIX
Product: Fedora
Classification: Fedora
Component: autofs (Show other bugs)
9
i386 Linux
low Severity low
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Assigned To: Ian Kent
Fedora Extras Quality Assurance
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2008-06-28 13:46 EDT by Eugene Kanter
Modified: 2009-07-14 13:59 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
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Last Closed: 2009-07-14 13:59:11 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
gdb backtrace of autofs (2.55 KB, text/plain)
2008-06-28 13:46 EDT, Eugene Kanter
no flags Details
kernel dump once found on the console during system shutdown (2.32 MB, image/jpeg)
2008-06-28 15:02 EDT, Eugene Kanter
no flags Details

  None (edit)
Description Eugene Kanter 2008-06-28 13:46:38 EDT
Version-Release number of selected component (if applicable):

autofs-5.0.3-15.i386

The system is on NIS:
[ekanter@viao590 ~]$ ypcat -k auto.master
/home auto.home
/net /etc/auto.net --timeout=60
[ekanter@viao590 ~]$ ypcat -k auto.home
* -rw,intr,rsize=4096,wsize=4096  192.168.1.98:/vol0/kanters/&

I am attaching thread output per
https://bugzilla.redhat.com/show_bug.cgi?id=443505#c5 in case it helps.
Comment 1 Eugene Kanter 2008-06-28 13:46:39 EDT
Created attachment 310509 [details]
gdb backtrace of autofs
Comment 2 Eugene Kanter 2008-06-28 15:02:57 EDT
Created attachment 310515 [details]
kernel dump once found on the console during system shutdown
Comment 3 Ian Kent 2008-06-29 23:00:59 EDT
Following a problem report upstream, due to a stupid mistake that
I've made in the past, Al Viro has been looking at the autofs4
code and has pointed out several races (so far) and this looks
like one of them. I'm working to fix them as Al points them out
so hopefully they will make it into the mainline kernel sometime
soon.

How often do you see this?

Ian
Comment 4 Eugene Kanter 2008-06-30 00:02:04 EDT
I see it every time the 750mhz system is started and automounted /home/user is
accessed. On 2Ghz system sometimes I don't see the problem. The screenshot was
made on a 2Ghz system.

Comment 5 Ian Kent 2008-06-30 01:08:31 EDT
(In reply to comment #4)
> I see it every time the 750mhz system is started and automounted /home/user is
> accessed. On 2Ghz system sometimes I don't see the problem. The screenshot was
> made on a 2Ghz system.

Right, no doubt it is one of the problems that Al has pointed
out, but still, the daemon shouldn't be doing this. I'll have
a look.

Ian
Comment 6 Ian Kent 2008-06-30 01:12:58 EDT
A debug log from the daemon may be useful, taken when this
happens with some indication of when it occurred so I can
relate it to the log.

If you can get a log, check out http://people.redhat.com/jmoyer
for instructions to ensure we get the log we need please.

Ian
Comment 7 Bug Zapper 2009-06-09 21:49:07 EDT
This message is a reminder that Fedora 9 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 9.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '9'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 9's end of life.

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The process we are following is described here: 
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Comment 8 Bug Zapper 2009-07-14 13:59:11 EDT
Fedora 9 changed to end-of-life (EOL) status on 2009-07-10. Fedora 9 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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