From owner-freebsd-current@freebsd.org  Sat Oct 15 12:01:08 2016
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Date: Sat, 15 Oct 2016 14:00:59 +0200
From: "Hartmann, O." <ohartman@mail.zedat.fu-berlin.de>
To: FreeBSD CURRENT <freebsd-current@freebsd.org>
Subject: options EFIRT: immediate crash of CURRENT
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Playing around with some EFI related options and putting 

options EFIRT

into the kernel config, results in an immediate crash after booting,
see screenshot attached.

This happens on non-EFI booting systems as well as EFI capable systems.
The screenshot is taken from a box with UEFI firmware, but disabled and
used via CSM/BIOS, but with option enabled.

Regards,
oh