From: "Alex Scheele" <alex@packetstorm.nu>
To: "Andrew Morton" <akpm@zip.com.au>
Cc: <heckmann@hbe.ca>, "Lkml" <linux-kernel@vger.kernel.org>
Subject: RE: [problem captured] Re: cerberus on 2.4.17-rc2 UP
Date: Tue, 8 Jan 2002 22:05:24 +0100 [thread overview]
Message-ID: <IOEMLDKDBECBHMIOCKODMECOCFAA.alex@packetstorm.nu> (raw)
In-Reply-To: <3C3B579D.7B8E534F@zip.com.au>
Andrew Morton wrote:
>
>
> 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?
I have had this problem on several machines to. But not only
against the swap device. I have 1 machine with a SCSI disk as
root disk /dev/sda1, the swap device is /dev/sda2.
Then there is a 4 disk ide raid0 (software raid) mounted
on /mnt and if i run it there i have the same problem.
This machine is a SMP machine, tho is has also happend
on UP machines.
Hope it helps.
--
Alex (alex@packetstorm.nu)
next prev parent reply other threads:[~2002-01-08 21:05 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
2002-01-08 21:05 ` Alex Scheele [this message]
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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