From owner-freebsd-hackers@freebsd.org  Mon Apr 23 07:39:53 2018
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From: Eitan Adler <lists@eitanadler.com>
Date: Mon, 23 Apr 2018 00:39:21 -0700
Message-ID: <CAF6rxgnhhG1sN=jEunyrJnB5FcnEwqe4EW+UiMsbHtJXp7kLPg@mail.gmail.com>
Subject: on shutdown: Fatal trap 9: general protection fault while in kernel
 mode
To: FreeBSD Hackers <freebsd-hackers@freebsd.org>
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https://reviews.freebsd.org/P175

Kernel is trying to deref this pointer:

(kgdb) p sx
$1 = (struct sx *) 0xdeadc0dedeadd47e

no time to debug right now, but complete kernel + dump + symbols available.

-- 
Eitan Adler