Re: init receiving SIGILL on XEN3_DOM0/amd64

[Sarton O'Brien <bsd-xen%roguewrt.org@localhost>]

On Sun, 25 May 2008 07:47:34 pm Abrasive wrote:
> On Sat, May 24, 2008 at 04:58:40PM +0200, Manuel Bouyer wrote:
> > On Sun, May 18, 2008 at 02:32:37PM +0200, Manuel Bouyer wrote:
> > > On Sun, May 18, 2008 at 01:43:04PM +0200, Christoph Egger wrote:
> > > > >When the CPU sends an illegal intruction trap, I guess.
> > OK, I've been seeing this occasionally now on an Intel CPU. A dom0 kernel 
will
> > fail to start init in this way once in a while. But hitting ^A^A^AR on the
> > serial console cause the system to reboot, and the next boot is usually
> > successfull without changing anything in kernel or boot options.
> > 
> > The intermittent aspect makes it hard to debug, and also confuses me a bit
> > about what the cause could be.
> 
> Odd. I found it extremely consistent, always when the root device is not set 
properly (wrong or no root=/bootdev=) and it has to ask. AMD box, 4GB RAM, 
booting from wd2a. USB keyboard.
> I can probably get some sort of dump out of it, if that would be helpful.
> 

I don't specify bootdev or root and like I said, only happened once so far 
(domu). I guess being timing related, maybe not specifying bootdev or root 
causes it to snag a bit easier due to the probing delay ... for you 
anyway ... :S

Sarton