From: Andrew Morton <akpm@zip.com.au>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "marc. h." <heckmann@hbe.ca>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
linux-kernel@vger.kernel.org
Subject: Re: [problem captured] Re: cerberus on 2.4.17-rc2 UP
Date: Tue, 08 Jan 2002 12:33:33 -0800 [thread overview]
Message-ID: <3C3B579D.7B8E534F@zip.com.au> (raw)
In-Reply-To: <20020108164816.A5453@hbe.ca> from "marc. h." at Jan 08, 2002 04:48:17 PM <E16Nysp-0006tn-00@the-village.bc.nu>
Alan Cox wrote:
>
> > end_request: buffer-list destroyed
> > hda1: bad access: block=12440, count=-8
> > end_request: I/O error, dev 03:01 (hda), sector 12440
> > hda1: bad access: block=12448, count=-16
>
> That looks like a race in the IDE/block layer (or somewhere above it maybe)
> Someone trashed a request in progress.
>
> > Is this a bug or could it be the hardware's fault? The hardware is new lspci
>
> Other people have reported it too. Its clearly a kernel race
Yes, I can generate it at will on two quite different IDE machines
with the run-bash-shared-mapping script from
http://www.zip.com.au/~akpm/ext3-tools.tar.gz
It's on my list of things-to-do, filed under "hard". It even happens
on uniprocessor, with unmask_irq=0.
Interestingly, I _think_ it only ever occurs against the
swap device. But I need to confirm this. Marc, do you
have swap on /dev/hda1?
-
next prev parent reply other threads:[~2002-01-08 20:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-20 12:59 cerberus on 2.4.17-rc2 UP marc. h.
2001-12-21 16:56 ` Marcelo Tosatti
2001-12-22 20:22 ` Marc Heckmann
2002-01-07 11:14 ` marc. h.
2002-01-08 15:48 ` [problem captured] " marc. h.
2002-01-08 16:13 ` Alan Cox
2002-01-08 20:33 ` Andrew Morton [this message]
2002-01-08 21:05 ` Alex Scheele
2002-01-09 9:37 ` marc. h.
2002-01-16 10:35 ` marc. h.
-- strict thread matches above, loose matches on Subject: below --
2002-01-08 22:15 Manfred Spraul
2002-01-09 9:04 ` Andrew Morton
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