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Date: Wed, 13 Aug 2003 11:19:58 +0200
From: Jurriaan on adsl-gate <thunder7@xs4all.nl>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.0-test3-mm1: scheduling while atomic (ext3?)
Message-ID: <20030813091958.GA30746@gates.of.nowhere>
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References: <20030813045638.GA9713@middle.of.nowhere> <20030813014746.412660ae.akpm@osdl.org>
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On Wed, Aug 13, 2003 at 01:47:46AM -0700, Andrew Morton wrote:
> Jurriaan <thunder7@xs4all.nl> wrote:
> >
> > Aug 13 06:47:48 middle -- MARK --
> >  Aug 13 06:53:03 middle kernel:  printing eip:
> >  Aug 13 06:53:03 middle kernel: c016c14a
> >  Aug 13 06:53:03 middle kernel: Oops: 0000 [#1]
> >  Aug 13 06:53:03 middle kernel: PREEMPT 
> >  Aug 13 06:53:03 middle kernel: CPU:    0
> >  Aug 13 06:53:03 middle kernel: EIP:    0060:[<c016c14a>]    Not tainted VLI
> >  Aug 13 06:53:03 middle kernel: EFLAGS: 00010286
> >  Aug 13 06:53:03 middle kernel: EIP is at find_inode_fast+0x1a/0x60
> 
> And indeed, your %edx is zero.
> 
> But if a prefetch of zero oopses then we should be oopsing in there all the
> time.
> 
> hlist_for_each() is completely assuming that prefetch(0) is safe, and you
> undoubtedly oopsed doing it.
> 
> 
> Colour me confused, and let me Cc lots of x86 guys ;)
> 
> Exactly what sort of CPU are you using?
> -
AMD Athlon XP2400+ on a VIA KT400 chipset, single CPU-system.

Kind regards,
Jurriaan
-
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