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Bug 325907 - NFSD hangs connection in kernel 2.6.32 and perhaps 2.6.33
Summary: NFSD hangs connection in kernel 2.6.32 and perhaps 2.6.33
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Core system (show other bugs)
Hardware: All Linux
: High major (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
URL: https://bugzilla.kernel.org/show_bug....
Whiteboard: linux-2.6.32-regression
Keywords:
Depends on:
Blocks:
 
Reported: 2010-06-28 00:53 UTC by Simon Matthews
Modified: 2011-06-28 09:26 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

Attachments
kernel config file (config,60.39 KB, text/plain)
2010-06-28 00:54 UTC, Simon Matthews 		Details
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Description Simon Matthews 2010-06-28 00:53:07 UTC 
I have hit a kernel bug in the gentoo-sources version 2.6.32-r7. This bug can either cause nfsd processes to die or cause a kernel panic. 

The upstream bug report is here:
https://bugzilla.kernel.org/show_bug.cgi?id=15274



Reproducible: Always

Steps to Reproduce:
1.Build 2.6.32-r7 kernel
2.Boot into kernel
3.Run for 2-3 days
4.Watch nfsd processes segfault or the system crash. 

Actual Results:  
Stable running system

Expected Results:  
Unstable system
Comment 1 Simon Matthews 2010-06-28 00:54:00 UTC 
Created attachment 236769 [details]
kernel config file

This is the kernel config file from the system on which I see the problem.
Comment 2 Markos Chandras (RETIRED) gentoo-dev 2010-06-29 20:42:55 UTC 
Kernel team is CC'ed on the upstream bug and we will keep an eye on it
Comment 3 Mike Pagano gentoo-dev 2010-08-18 19:44:18 UTC 
It appears the fix might be http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=1b644b6e6f6160ae35ce4b52c2ca89ed3e356e18

Which is in all 2.6.34 kernels. Can you test with gentoo-sources-2.6.34-r5 and let us know the results?
Comment 4 Simon Matthews 2010-08-18 21:34:56 UTC 
(In reply to comment #3)
> It appears the fix might be
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=1b644b6e6f6160ae35ce4b52c2ca89ed3e356e18
> 
> Which is in all 2.6.34 kernels. Can you test with gentoo-sources-2.6.34-r5 and
> let us know the results?
> 
Unfortunately, no. I only saw the problem on a machine that needs to run 24/7, so I can't really risk it going off-line again if the problem isn't fixed.
Comment 5 Mike Pagano gentoo-dev 2010-08-31 17:03:52 UTC 
watching upstream bug
Comment 6 Simon Matthews 2010-09-08 05:08:27 UTC 
(In reply to comment #4)
> (In reply to comment #3)
> > It appears the fix might be
> > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff_plain;h=1b644b6e6f6160ae35ce4b52c2ca89ed3e356e18
> > 
> > Which is in all 2.6.34 kernels. Can you test with gentoo-sources-2.6.34-r5 and
> > let us know the results?
> > 
> Unfortunately, no. I only saw the problem on a machine that needs to run 24/7,
> so I can't really risk it going off-line again if the problem isn't fixed.
>

I have been running 2.6.35-gentoo-r4 and it seems to be stable. No problems in 72 hours, It looks like the problem has been resolved.