From owner-freebsd-stable@freebsd.org  Tue May 23 12:47:35 2017
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Subject: Re: FreeBSD as VirtualBox guest panics when starting VBoxService
To: David Boyd <David.Boyd49@twc.com>, freebsd-stable@freebsd.org
References: <1493215268.4148.0.camel@twc.com>
From: Eric Badger <badger@FreeBSD.org>
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Date: Tue, 23 May 2017 07:47:31 -0500
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On 04/26/2017 09:01 AM, David Boyd wrote:
> Using 11.0-STABLE VM image snapshots, since April 05, 2017, FreeBSD
> panics when VBoxService starts.
>
> using snapshot FreeBSD-11.0-RELEASE-amd64.vmdk no panic occurs.
>
> using snapshot FreeBSD-11.0-STABLE-amd64-20170323-r315855.vmdk no panic
> occurs.
>
> using snapshot FreeBSD-11.0-STABLE-amd64-20170405-r316498.vmdk panic
> occurs (see attachment).
>
> using snapshot FreeBSD-11.0-STABLE-amd64-20170420-r317153.vmdk panic
> occurs (see attachment).
>
> using snapshot FreeBSD-12.0-CURRENT-amd64.vmdk no panic occurs.
>
> I am prepared to submit a PR if that is the thing to do.
>
> Thanks, in advance, for your assistance in this matter.
>

Please try again after r318743. I believe it fixes this problem.

Eric