From owner-freebsd-hackers@FreeBSD.ORG  Wed Mar 18 08:53:27 2015
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@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 2E1EA91B
 for <freebsd-hackers@freebsd.org>; Wed, 18 Mar 2015 08:53:27 +0000 (UTC)
Received: from mo6-p00-ob.smtp.rzone.de (mo6-p00-ob.smtp.rzone.de
 [IPv6:2a01:238:20a:202:5300::6])
 (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client CN "*.smtp.rzone.de", Issuer "TeleSec ServerPass DE-2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id B1AA42FC
 for <freebsd-hackers@freebsd.org>; Wed, 18 Mar 2015 08:53:26 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1426668785; l=828;
 s=domk; d=fuckner.net;
 h=Content-Transfer-Encoding:Content-Type:In-Reply-To:References:
 Subject:CC:To:MIME-Version:From:Date;
 bh=1uw3fnXT+2vUjB4+KWDtDO9Ro0uVpp1UUrt7Dgq6yJg=;
 b=DpzqdfyFgrLFdWSMBhHydDU020PbPCGnW7dHKarqKdgGsl+Fe0m/oH1B3OlB9p0dJIQ
 aNlmfos+JVi5H91rfKghAkj0LHxmZMcEgV4TFM+TW+/xeRmVNiq+/dW55nkjolXzlQSDB
 jif2G28qFeiVzjVLpkXpfRtckdreW07xNI0=
X-RZG-AUTH: :IWUHfUGtd9+6EujMWHx57N4dWae4bmTL/JIGbzkGUoozgkO4q1xDEhkgOJDsXNs=
X-RZG-CLASS-ID: mo00
Received: from fuckner.delnet ([85.183.0.195])
 by smtp.strato.de (RZmta 37.4 AUTH) with ESMTPA id f02626r2I8r24cY;
 Wed, 18 Mar 2015 09:53:02 +0100 (CET)
Message-ID: <55093CED.4090604@fuckner.net>
Date: Wed, 18 Mar 2015 09:53:01 +0100
From: Michael Fuckner <michael@fuckner.net>
User-Agent: Mozilla/5.0 (X11; Linux x86_64;
 rv:31.0) Gecko/20100101 Thunderbird/31.5.0
MIME-Version: 1.0
To: Steven Hartland <killing@multiplay.co.uk>, Ryan Stone <rysto32@gmail.com>
Subject: Re: Server with 3TB Crashing at boot
References: <550046F7.1050205@fuckner.net>	<CAJ-VmokruCyo3M5up9n+Afvkr7VFBtUftpdgc=52ES+Nt6=JZA@mail.gmail.com>	<CAPQ4ffsd-SpsLTbGL8BdBsNHLx9HhVQ4Wh+95M98fCmT5idPAg@mail.gmail.com>	<550093DD.5040603@freebsd.org>	<55015D3B.6030605@fuckner.net>	<5501DD57.7030305@freebsd.org>	<CAJ-Vmom+Zy_6ZCcTA_h4LFL-wDdaCmbqAgN5shpOsBBgWJw1mg@mail.gmail.com>	<5503234A.4060103@fuckner.net>	<55032C1B.5030004@multiplay.co.uk>
 <CAFMmRNzmr0Z1vXYK5y2QLk3eyUqXyK8TELgh4KHZ+DQVDXWZAg@mail.gmail.com>
 <5503405E.6050805@multiplay.co.uk>
In-Reply-To: <5503405E.6050805@multiplay.co.uk>
Content-Type: text/plain; charset=windows-1252; format=flowed
Content-Transfer-Encoding: 7bit
Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 18 Mar 2015 08:53:27 -0000

On 03/13/2015 08:54 PM, Steven Hartland wrote:
>
> On 13/03/2015 19:40, Ryan Stone wrote:
>> On Fri, Mar 13, 2015 at 2:27 PM, Steven Hartland
>> <killing@multiplay.co.uk <mailto:killing@multiplay.co.uk>> wrote:
>>
>>     Looks like that's panicing when allocating the zfs dbuf hash
>>     table, which by my calculation should be requesting 8GB for a 4TB
>>     physmem?
>>
>>
>> Interesting observation.  Michael, can you try booting with this patch
>> applied?  There is a bug in the kernel when we attempt to malloc()
>> more than 4GB.
>>
>> https://people.freebsd.org/~rstone/patches/vm_64bit_malloc.diff
>> <https://people.freebsd.org/%7Erstone/patches/vm_64bit_malloc.diff>
>>
> Nice catch Ryan, don't you just love integer overflows ;-)
>
could someone please push this patch to head- or are there any objections?