Re: 2.4.20-rc1 - hang with processes stuck in D

From: Marcelo Tosatti (
Date: Fri Nov 08 2002 - 04:01:38 EST

On Tue, 5 Nov 2002, Andrew Morton wrote:

> Jeff Dike wrote:
> >
> > 2.4.20-rc1 reliably gets processes stuck in D, eventually wedging the whole
> > system. This is by diffing two kernel pools, one of which has 9 138764288
> > byte core files.
> >
> > The diff itself is stuck in __wait_on_buffer:
> >
> > Trace; c0131608 <__wait_on_buffer+68/90>
> Kernel is waiting for IO completion on a read. I would be
> suspecting your IO system, or interrupt system.

Or rather try it on a different box.

Jeff, can you please mail me privately the exact test case which produces
the problem so I can try it around here?

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