From owner-freebsd-current@FreeBSD.ORG  Fri Aug  5 11:22:19 2011
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 259B4106564A
	for <freebsd-current@freebsd.org>; Fri,  5 Aug 2011 11:22:19 +0000 (UTC)
	(envelope-from dim@FreeBSD.org)
Received: from tensor.andric.com (cl-327.ede-01.nl.sixxs.net
	[IPv6:2001:7b8:2ff:146::2])
	by mx1.freebsd.org (Postfix) with ESMTP id DC11C8FC14
	for <freebsd-current@freebsd.org>; Fri,  5 Aug 2011 11:22:18 +0000 (UTC)
Received: from [IPv6:2001:7b8:3a7:0:c8f4:eca0:4c79:fdf1] (unknown
	[IPv6:2001:7b8:3a7:0:c8f4:eca0:4c79:fdf1])
	(using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
	(No client certificate requested)
	by tensor.andric.com (Postfix) with ESMTPSA id 37DF75C37;
	Fri,  5 Aug 2011 13:22:18 +0200 (CEST)
Message-ID: <4E3BD270.5020408@FreeBSD.org>
Date: Fri, 05 Aug 2011 13:22:24 +0200
From: Dimitry Andric <dim@FreeBSD.org>
Organization: The FreeBSD Project
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64;
	rv:5.0) Gecko/20110624 Thunderbird/5.0
MIME-Version: 1.0
To: Pawel Worach <pawel.worach@gmail.com>
References: <86zkjtwc8r.fsf@gmail.com>
	<B9C820F7-EAD7-4AB8-903A-06CEF17240CA@gmail.com>
In-Reply-To: <B9C820F7-EAD7-4AB8-903A-06CEF17240CA@gmail.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: Test Rat <ttsestt@gmail.com>, freebsd-current@freebsd.org
Subject: Re: [clang] (gpt)zfsboot is broken: zfs_alloc()/zfs_free() mismatch
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 05 Aug 2011 11:22:19 -0000

On 2011-08-05 02:17, Pawel Worach wrote:
...
> A workaround for the hang on boot and "error 1 lba X" failures is the following patch, it would be interesting if it also makes the zfs_alloc/free error go away too.
...
> dim@ has filed an upstream bug, http://llvm.org/bugs/show_bug.cgi?id=10591

This PR is about another issue, which I discovered during debugging of
the gptzfsboot problem.

The actual problem when compiling (gpt)zfsboot with clang and -mrtd
seems to be that clang screws something up with the function calling
conventions, causing crashes and other weird things.  I have not yet
determined the root cause of this.