linux-kernel - Re: v6.13-rc1: Internal error: Oops - Undefined instruction: 0000000002000000 [#1] SMP

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Message-ID: <86ser6t6fs.wl-maz@kernel.org>
Date: Mon, 02 Dec 2024 16:07:03 +0000
From: Marc Zyngier <maz@...nel.org>
To: Vitaly Chikunov <vt@...linux.org>
Cc: Will Deacon <will@...nel.org>,
	james.morse@....com,
	linux-arm-kernel@...ts.infradead.org,
	Catalin Marinas <catalin.marinas@....com>,
	linux-kernel@...r.kernel.org,
	oliver.upton@...ux.dev,
	mark.rutland@....com
Subject: Re: v6.13-rc1: Internal error: Oops - Undefined instruction: 0000000002000000 [#1] SMP

On Mon, 02 Dec 2024 15:59:40 +0000,
Vitaly Chikunov <vt@...linux.org> wrote:
> 
> Marc,
> 
> On Mon, Dec 02, 2024 at 03:53:59PM +0000, Marc Zyngier wrote:
> >
> > What the log doesn't say is what the host is. Is it 6.13-rc1 as well?
> 
> No, host is 6.6.60.

Right. I wouldn't be surprised if:

- this v6.6 kernel doesn't hide the MPAM feature as it should (and
  that's proably something we should backport)

- you get a nastygram in the host log telling you that the guest has
  executed something it shouldn't (you'll get the encoding of the
  instruction)

Can you confirm these two things?

	M.

-- 
Without deviation from the norm, progress is not possible.