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Date: Fri, 13 Jan 2006 19:36:01 +0300
From: Alexey Dobriyan <adobriyan@gmail.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
       Evgeniy <dushistov@mail.ru>
Subject: Re: Oops in ufs_fill_super at mount time
Message-ID: <20060113163601.GA13738@mipter.zuzino.mipt.ru>
References: <20060113005450.GA7971@mipter.zuzino.mipt.ru> <Pine.LNX.4.64.0601121700041.3535@g5.osdl.org> <20060113102136.GA7868@mipter.zuzino.mipt.ru> <Pine.LNX.4.64.0601130739540.3535@g5.osdl.org>
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On Fri, Jan 13, 2006 at 07:45:12AM -0800, Linus Torvalds wrote:
> On Fri, 13 Jan 2006, Alexey Dobriyan wrote:
>
> > On Thu, Jan 12, 2006 at 05:14:25PM -0800, Linus Torvalds wrote:
> > >
> > > This is a free'd page fault, so it's due to DEBUG_PAGEALLOC rather than a
> > > wild pointer.
> >
> > That's true. Turning it off makes mounting reliable again.
> >
> > > Is that something new for you? Maybe the bug is older, but you've enabled
> > > PAGEALLOC only recently?
> >
> > Yup. In response to hangs re disk activity.
>
> Ok, That explains why it started happening for you only _now_, but not why
> it happens in the first place.
>
> Can you test if the patch that Evgeniy sent out fixes it for you even with
> PAGEALLOC debugging enabled?

It does the trick! And you saved me from going before 2.6.0. ;-)