Date: Wed, 28 May 2003 16:18:37 -0700
From: Andrew Morton <akpm@digeo.com>
To: Helge Hafting <helgehaf@aitel.hist.no>
Cc: wli@holomorphy.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
       neilb@cse.unsw.edu.au
Subject: Re: 2.5.70-mm1 bootcrash, possibly RAID-1
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Helge Hafting <helgehaf@aitel.hist.no> wrote:
>
> On Wed, May 28, 2003 at 04:35:44AM -0700, William Lee Irwin III wrote:
> > 
> > This is unusual; I'm having trouble very close to this area. There is
> > a remote chance it could be the same problem.
> > 
> > Could you log this to serial and get the rest of the oops/BUG? If it's
> > where I think it is, I've been looking at end_page_writeback() and so
> > might have an idea or two.
> 
> I tried 2.5.70-mm1 on the dual celeron at home.  This one has
> scsi instead of ide, so I guess it is a RAID-1 problem.
> This machine has root on raid-1 too.  I believe there where
> several oopses in a row, I captured all of the last one
> thanks to a framebuffer with a small font. Here it is:
> 
> Unable to handle kernel paging request at virtual address 8a8a8ab6
> *pde=0 OOPS 0000 [#1]
> EIP at put_all_bios+0x47/0x80
> (edx was the register containing 8a8a8a8a)
> Process swapper pid=0 threadinfo c1352000 task=c13f52d0
> Call trace:
> raid_end_bio_io
> raid1_end_request

That's POISON_BEFORE: "use of uninitialised memory", not "use of freed
memory".

I fiddled with the slab poisoning values, and shall undo that.
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