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Subject: Re: svn commit: r366965 - stable/12/usr.sbin/bhyve
To: Konstantin Belousov <kostikbel@gmail.com>,
 Ryan Moeller <freqlabs@freebsd.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org
References: <202010231048.09NAmEW8090391@repo.freebsd.org>
 <20201023122726.GZ2643@kib.kiev.ua>
From: Ryan Moeller <freqlabs@FreeBSD.org>
Message-ID: <9590af32-1b4c-23b8-dede-2554ea2b256c@FreeBSD.org>
Date: Fri, 23 Oct 2020 08:33:22 -0400
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On 10/23/20 8:27 AM, Konstantin Belousov wrote:
> Does this description mean that if guest writes garbage into base, it can
> crash monitor ?

The guest can crash the bhyve process by writing garbage into device 
registers, yes.

A bad base address will be mapped to NULL and eventually gets passed as 
src to memcpy.

-Ryan