From owner-freebsd-virtualization@FreeBSD.ORG  Sun Nov 23 19:45:47 2014
Return-Path: <owner-freebsd-virtualization@FreeBSD.ORG>
Delivered-To: freebsd-virtualization@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 28BCEF93
 for <freebsd-virtualization@freebsd.org>; Sun, 23 Nov 2014 19:45:47 +0000 (UTC)
Received: from alto.onthenet.com.au (alto.OntheNet.com.au [203.13.68.12])
 by mx1.freebsd.org (Postfix) with ESMTP id D98E4D3C
 for <freebsd-virtualization@freebsd.org>; Sun, 23 Nov 2014 19:45:46 +0000 (UTC)
Received: from dommail.onthenet.com.au (dommail.OntheNet.com.au [203.13.70.57])
 by alto.onthenet.com.au (Postfix) with ESMTP id A763B12837;
 Mon, 24 Nov 2014 05:45:44 +1000 (EST)
Received: from Dana-Toroks-MBP.att.net
 (107-214-150-206.lightspeed.sntcca.sbcglobal.net [107.214.150.206])
 by dommail.onthenet.com.au (MOS 4.4.4-GA)
 with ESMTP id BZX30058 (AUTH peterg@ptree32.com.au);
 Mon, 24 Nov 2014 05:45:43 +1000
Message-ID: <54723963.1010101@freebsd.org>
Date: Sun, 23 Nov 2014 11:45:39 -0800
From: Peter Grehan <grehan@freebsd.org>
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10;
 rv:24.0) Gecko/20100101 Thunderbird/24.6.0
MIME-Version: 1.0
To: Shawn Webb <lattera@gmail.com>
Subject: Re: bhyve cannot allocate memory
References: <20141122215245.d9380cc4e43cb5e60d479009@gmail.com>	<20141122220202.09523b0ae828993174af05d8@gmail.com>	<5471513C.6040400@freebsd.org>	<CADt0fhxEavv5e6tbmORxUZgPNGQNZiu2O=PtO6aKhW+_fkRSZQ@mail.gmail.com>	<54715438.3090905@freebsd.org>	<CADt0fhxFzqKbw7kndeUVQaVeJ_jj=-yNUgvD6ntn7hM3YGqCLA@mail.gmail.com>	<54715822.2010309@freebsd.org>	<CADt0fhwTSci31wwq8UoN2JpUGHKgLNiDXymZQyeWYFVd4i7PJA@mail.gmail.com>	<54715911.1090100@freebsd.org>	<CADt0fhxCv3DneeoVewGEz7+Q53gqDNENJKD2-CH6Sxz=PFT3ig@mail.gmail.com>	<54715B13.9020303@freebsd.org>
 <20141123144349.84f648dcfc1169bf952c7ee7@gmail.com>
In-Reply-To: <20141123144349.84f648dcfc1169bf952c7ee7@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-virtualization@freebsd.org
X-BeenThere: freebsd-virtualization@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: "Discussion of various virtualization techniques FreeBSD supports."
 <freebsd-virtualization.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-virtualization/>
List-Post: <mailto:freebsd-virtualization@freebsd.org>
List-Help: <mailto:freebsd-virtualization-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 23 Nov 2014 19:45:47 -0000

> Oliver fixed the problem. bhyve's vmm.ko uses VM_MIN_ADDRESS, which
> defaults to NULL in FreeBSD. We modified that to be at 64k to prevent
> NULL dereferences. Combine that with the removal of map_at_zero, NULL
> deref is not possible anymore. But since we bumped VM_MIN_ADDRESS up,
> bhyve's vmm.ko no longer attempts to map at NULL (which it absolutely
> needs to). The change Oliver made simply uses 0 instead of
> VM_MIN_ADDRESS. If this is a change FreeBSD wants upstream, we'd love
> it merged upstream.
>
> Commit for reference:
> https://github.com/HardenedBSD/hardenedBSD/commit/23bd719ce1e3a8cc42fc8317b1c7c6d9e74dcba0

  Thanks - we'll submit this.

later,

Peter.