linux-kernel - Re: Linux v2.6.18-rc5

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Date:	Tue, 29 Aug 2006 01:30:29 +0200
From:	"Jesper Juhl" <jesper.juhl@...il.com>
To:	"Nathan Scott" <nathans@....com>
Cc:	"Kasper Sandberg" <lkml@...anurb.dk>,
	"Linus Torvalds" <torvalds@...l.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Subject: Re: Linux v2.6.18-rc5

On 29/08/06, Nathan Scott <nathans@....com> wrote:
> On Mon, Aug 28, 2006 at 12:35:00PM +0200, Jesper Juhl wrote:
> > On 28/08/06, Kasper Sandberg <lkml@...anurb.dk> wrote:
> > > On Mon, 2006-08-28 at 12:10 +0200, Jesper Juhl wrote:
> > > > Not really a regression, more like a long standing bug, but XFS has
> > > > issues in 2.6.18-rc* (and earlier kernels, at least post 2.6.11).
> > > and you are saying this issue exists in all post .11 kernels?
>
> I would be surprised if this is not a day one bug, it probably
> even affects the IRIX version of XFS.  Our problem is the lack
> of a test case to find it - my efforts have come to naught so
> far.  I'm having to cross my fingers that Jesper can extract a
> bit more information when he's next able to hit it.
>
I'm trying my best, but it's difficult. Often I can only run the -rc
kernel for a few hours on the box that currently shows the problem,
and that's not enough to hit the fault.
I've configured a XFS partition on my home workstation and I'm keeping
that one busy doing various rsync's and running benchmarks etc -
putting as much different stress on the XFS filesystem as I can. I'm
also setting up a test box at work to try and duplicate the problem on
a non-production server. I won't be able to duplicate the setup
exactly, but it'll be close.

> > > > See the thread titled "2.6.18-rc3-git3 - XFS - BUG: unable to handle
> > > > kernel NULL pointer dereference at virtual address 00000078" for the
> > > > full story.
>
> That, and another story - Jesper hijacked that thread ;) - the

Sorry ;)

> inital bug there was found and fixed, and the fix has now been
> merged.  But (fyi, Kasper) much of that thread is discussing a
> different bug to this one.
>

True. I should have emphasised that.


-- 
Jesper Juhl <jesper.juhl@...il.com>
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