From owner-freebsd-stable@FreeBSD.ORG  Fri Dec 19 16:06:35 2014
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
Delivered-To: freebsd-stable@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 6A52C716
 for <freebsd-stable@freebsd.org>; Fri, 19 Dec 2014 16:06:35 +0000 (UTC)
Received: from mx0.gentlemail.de (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130])
 (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id F2EB71437
 for <freebsd-stable@freebsd.org>; Fri, 19 Dec 2014 16:06:34 +0000 (UTC)
Received: from mh0.gentlemail.de (ezra.dcm1.omnilan.net
 [IPv6:2a00:e10:2800::a135])
 by mx0.gentlemail.de (8.14.5/8.14.5) with ESMTP id sBJG6Xve031244
 for <freebsd-stable@freebsd.org>; Fri, 19 Dec 2014 17:06:33 +0100 (CET)
 (envelope-from freebsd@omnilan.de)
Received: from titan.inop.mo1.omnilan.net (titan.inop.mo1.omnilan.net
 [IPv6:2001:a60:f0bb:1::3:1])
 (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
 (No client certificate requested)
 by mh0.gentlemail.de (Postfix) with ESMTPSA id E73233405;
 Fri, 19 Dec 2014 17:06:32 +0100 (CET)
Message-ID: <54944D08.8000202@omnilan.de>
Date: Fri, 19 Dec 2014 17:06:32 +0100
From: Harry Schmalzbauer <freebsd@omnilan.de>
Organization: OmniLAN
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; de-DE;
 rv:1.9.2.8) Gecko/20100906 Lightning/1.0b2 Thunderbird/3.1.2
MIME-Version: 1.0
To: FreeBSD Stable Mailing List <freebsd-stable@freebsd.org>
Subject: CPUTYPEs includig avx are suspicious with clang in stable/10
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7
 (mx0.gentlemail.de [IPv6:2a00:e10:2800::a130]);
 Fri, 19 Dec 2014 17:06:33 +0100 (CET)
X-Milter: Spamilter (Reciever: mx0.gentlemail.de; Sender-ip: ;
 Sender-helo: mh0.gentlemail.de; )
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-stable/>
List-Post: <mailto:freebsd-stable@freebsd.org>
List-Help: <mailto:freebsd-stable-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-stable>,
 <mailto:freebsd-stable-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 19 Dec 2014 16:06:35 -0000

 I'm seeing sporadic problems (core dumps) with binaries compiled with
CPUTYPE=core-i-avx.
They run fine on IvyBridge, but fail on Haswells.
Stripping avx from MACHINE_CPU (by defining CPUTYPE=corei7 instead of
core-i-avx) solved all crashes on the haswell system.

I have no idea if applications like pkg(8) make use of AVX, I'd bet they
don't do. So I guess it's something wrong with clang.
Unfortuantely I currently don't have a development installation on any
haswell system to provide some useful backtraces, but perhaps somebody
with compiler knowledge can have a look at this problem?

Thanks,

-Harry