Comment # 7 on bug 1192115 from Fabian Vogt

(In reply to Lin Ma from comment #6)
> (In reply to Fabian Vogt from comment #5)
> > (In reply to Lin Ma from comment #4)
> > > Although the reproducibility is non-constant, Bisecting shows the seabios
> > > commit b3fa8577 "kvm: add support for reading tsc frequency" is the most
> > > suspicious one to trigger below error message:
> > > cpage out of range (5)
> > > processing error - resetting ehci HC
> > > 
> > > I used to say 'I indeed experenced the "processing error - resetting ehci
> > > HC" error message once"' with seabios 1.12, But that one was not triggered
> > > by "cpage out of range (5)"
> > > 
> > > 
> > > @Fabian,
> > > Could you please help to verify below workaround?
> > > 
> > > Modify the test script on openQA to inject "no-kvmclock" kernel-parameter to
> > > related boot entry in guest grub.
> > > 
> > > Thanks
> > 
> > The issue appears before the kernel is executed, so kernel parameters would
> > not have any effect.
> 
> Emm.. It's unbelievable a bit.
> So the issue (cpage out of range (5) processing error - resetting ehci HC)
> occurs before loading guest grub OR the issue occurs while the guest grub
> already start to work but is at eariler stage?

GRUB fails to read from the storage device, resulting in errors and corrupted
data.