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SubjectRe: Linux 2.6.25-rc4
Date
On Thursday 06 March 2008, Ingo Molnar wrote:
>
> * Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> wrote:
>
> > The problem looks very similar to the one recently reported by Anders:
> >
> > http://lkml.org/lkml/2008/2/22/239
> >
> > "Trying out 2.6.25-rc2 smartd always causes my box to hang. I can
> > switch vt:s and the keyboard seems to work.
> >
> > Using sysrq-e I noticed a callpath open -> ext3 -> journals ->
> > sync_buffer -> io_scheduel -> generic_unplig_device. I'd guess the
> > open stems from smartd. Removing smartd from the startup, I'm now
> > using rc2 fine..."
> >
> > Initially we thought that it is an IDE regression but after some
> > testing and further investigation it seems that IDE changes just made
> > it more likely to occur (yesterday it turned out that the kernel with
> > the "guilty" IDE commit sometimes boots fine). The issue is easily
> > reproducible.
> >
> > PS We've already verified that it is not PREEMPT related or a compiler
> > bug.
>
> smartd is not active here though - and starting/restarting it doesnt
> provoke a hang.

I was a bit unclear on this, the problem is easily reproducible but _only_
on Anders' system (I couldn't reproduce it with smartd here either).

Thanks,
Bart


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