linux-kernel - Re: Problem with global pages changeset and kvm

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Message-ID: <20180508142659.GB3402@calabresa>
Date:   Tue, 8 May 2018 11:27:00 -0300
From:   Thadeu Lima de Souza Cascardo <cascardo@...onical.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: Problem with global pages changeset and kvm

On Tue, May 08, 2018 at 07:15:06AM -0700, Dave Hansen wrote:
> Thanks for the excellent bug report!
> 
> On 05/08/2018 02:37 AM, Thadeu Lima de Souza Cascardo wrote:
> > 2) The bad address is next to do_syscall_64 on the host.
> 
> So a host address leaked into a guest oops?
> 
> We should bring the KVM folks into this and probably also need to widen
> the cc list quite a bit.
> 
> Can you boot the guest at all?

No, there are multiple oopses, the last one includes init, which makes the
guest panic. I can boot it if I add nopti to the guest command line.

Cascardo.