linux-kernel - Re: PROBLEM: oops

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Date:	Thu, 27 Aug 2009 11:24:27 +0200 (CEST)
From:	Pawel Golaszewski <blues@....pl>
To:	Peter Zijlstra <peterz@...radead.org>
cc:	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>,
	Dhaval Giani <dhaval.giani@...il.com>
Subject: Re: PROBLEM: oops

On Thu, 27 Aug 2009, Peter Zijlstra wrote:
> > > > > > > > could you try to reproduce without that?
> > > > > > > > 
> > > > > > > > CONFIG_GROUP_SCHED=n
> > > > > > > I'll try.
> > > > > It seems that problem still exists - system has crashed too. 
> > > > > From netconsole: Any ideas? Last kernel I was using is 2.6.27.13 
> > > > > - works fine. None between 13 and 31 tested...
> > > > # git log --format=oneline v2.6.27.13..v2.6.27.31 kernel/sched*
> > > > 2b46f3769896dc04e1e49144d282e4655677105a wait: prevent exclusive waiter starvation
> > > > 
> > > > Nothing changed anywhere near the code that is falling apart..
> > > I have 2 machines with the same hardware and similar software. On 
> > > one .13 is stable - I will test it on the second one. Should be too.
> > I've checked it - 2.6.27.13 is stable for me. Conclusion: there is 
> > something wrong between 2.6.27.13 and 2.6.27.31 What can I do about 
> > that? I'm not kernel-hacker...
> Unless any of the memory debugging options yield a clue

Which options?

> the best you can do is a bisection I'm afraid.
> 
> # git log --format=oneline v2.6.27.13..v2.6.27.31 | wc -l
> 630
> 
> Which should be something like 10 kernel builds to find a patch, and 
> then one more with just that one reverted.

I will try it too...

-- 
pozdr.  Paweł Gołaszewski          jid:blues<at>jabber<dot>gda<dot>pl
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