On Tue, 2009-02-10 at 21:43 +1100, Dave Chinner wrote:
> On Mon, Feb 09, 2009 at 02:53:08AM -0500, Christoph Hellwig wrote:
> > On Sun, Feb 08, 2009 at 11:45:20PM +0100, Alessandro Bono wrote:
> > > sure, attached
> >
> > That would be a missing PagePrivate bit in page_buffers() called from
> > end_buffer_async_write. PG_private can only be cleared via drop_buffers
> > which requires the page not having PG_writeback set which must be
> > set until end_buffer_async_write is done. Very strange, and all this
> > is generic code without xfs involvement. Did this happen once
> > or can you reproduce it?
>
> Hmmmm - i wonder if this has anything to do with the writeback fixes
> that went into 2.6.28.2? Alessandro, can you revert to 2.6.28.1 (not
> plain 2.6.28) and see if you can reproduce the problem?
another test another bug
kernel 2.6.29-rc4-git4 with DEBUG_PAGEALLOC and CONFIG_DEBUG_LIST
enabled (idea taken from a totally unrelated mail from Ingo Molnar to
catch a memory corruption), usual bug attached
2.6.27 from ubuntu not survived to rsync
btw my first report of a similar problem was with a kernel 2.6.26.6 but
at time I was using binary driver for my radeon card and Christoph
suggest me that I have to recreate problem without any binary driver
maybe it's not a recent regression, it's simply easier to hit with a
newer kernel
I don't have abandoned idea of a hardware problem but I don't know how
to be sure
any suggestion?
thanks
>
> Cheers,
>
> Dave.
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Cordiali Saluti
Alessandro Bono
bug-2.6.29-rc4-git4
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