Re: [discuss] [OOPS] powernow on smp dual core amd64

[Andi Kleen]

> > Unfortunately, after starting cpuspeed daemon, I get this:
> 
> It looks like it's happening sometime after cpuspeed starts.
> Could you disable cpuspeed and see if the problem still
> occurs? 

If anything it must be something in the kernel (except someone
does very strange stuff in /dev/mem) 

> 
> > Starting cpuspeed: [  OK  ]
> > Starting pcmcia:  Starting PCMCIA services:
> > CPU 6: Machine Check Exception:                4 Bank 4: 
> > b200000000070f0f
> > TSC 4129a3d70d
> 
> > Code:  Bad RIP value.
> > RIP [<00000000000000ff>] RSP <ffff81003fe63fa0>
> > CR2: 00000000000000ff
> >  <0>Kernel panic - not syncing: Oops
> 
> Andi said that "Something tried to access a physical memory 
> address that was not mapped in the CPU."  Andi, is this
> related to the bug that you thought might have been fixed
> in 2.6.12-rc6-git4?

No, I don't think so. In that bug something would be mapped
twice, not nothing. Also nobody reported watchdog timeouts
for that one.

-Andi
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