Re: x86-64 sporadic hang in 2.6.23rc7 and 2.6.22

From: Thomas Gleixner
Date: Sun Sep 30 2007 - 11:58:20 EST

On Sat, 29 Sep 2007, Helge Hafting wrote:
> Thomas Gleixner wrote:
> > > I have gone back to 2.6.22rc4, which seems to work.
> > >
> > > This is a single opteron, although on a dual-slot board.
> > >
> >
> > Can you switch to serial console, so we can get some information out of
> > that box? Sysrq-B is working, so we can get info from other sysrq
> > functions as well.
> >
> I didn't need the serial - it crashes during console work too.
> I think a "make clean" was in progress at the time. There must be work going
> on in order to crash.
> This time 2.6.22rc4 died on me with a general protection fault
> I got two reports, the first one scrolled partially off screen but
> the whole trace was there:

That's why I asked for a serial console. That way we can get all the
information from the reports including the register dumps ....

> Then I got:
> spinlock lockup on cpu #0, kswapd 0/212

That's probably caused by the previous one.

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