[kdb] KDB makes Nehalem hang at early boot until key press

[Martin Hicks]

On Fri, Oct 30, 2009 at 04:12:06PM +0200, Thomas Renninger wrote:
> 
> > > IMO something like the attached patch makes sense?
> > > This fixes the problem with kdb=off (our default).
> > > But I am anxious that kdb code could still get activitated somehow
> > > and the machine might oops when trying to access not initialized
> > > kdb structures? Could someone give an estimation how risky that
> > > patch really is?
> > 
> > I'd really rather fix the underlying problem.  I have no idea what that
> > might be though...
> Me too...

Can you send me the .config you're using, as well as the kernel
revision?  I'll try to duplicate it.

Can you try turning of CONFIG_KDB_USB if you have it enabled?

mh