From owner-freebsd-arm@FreeBSD.ORG  Sun Apr 28 02:50:19 2013
Return-Path: <owner-freebsd-arm@FreeBSD.ORG>
Delivered-To: arm@freebsd.org
Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115])
 by hub.freebsd.org (Postfix) with ESMTP id 6ABBDB2F
 for <arm@freebsd.org>; Sun, 28 Apr 2013 02:50:19 +0000 (UTC)
 (envelope-from imp@bsdimp.com)
Received: from mail-ia0-x22a.google.com (mail-ia0-x22a.google.com
 [IPv6:2607:f8b0:4001:c02::22a])
 by mx1.freebsd.org (Postfix) with ESMTP id 3EADB150E
 for <arm@freebsd.org>; Sun, 28 Apr 2013 02:50:19 +0000 (UTC)
Received: by mail-ia0-f170.google.com with SMTP id k20so1669422iak.15
 for <arm@freebsd.org>; Sat, 27 Apr 2013 19:50:18 -0700 (PDT)
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=google.com; s=20120113;
 h=x-received:sender:subject:mime-version:content-type:from
 :in-reply-to:date:cc:content-transfer-encoding:message-id:references
 :to:x-mailer:x-gm-message-state;
 bh=gFzML5nFZloAdYIO62jjGID4e+4ePSLbAa0Q1O23sy4=;
 b=btPX8/nQ/QE50bgrUxOb5HsfQjRHcRAoTniYVyigNlDZ8GQTy8PLfcrLbOBkPHrFWe
 Fpeh3ZQXdywC/+qdaVe0fj1ehS3q9H403VFSeCA84OD9aOGPnIuLqGXb6jyjnxXM0fzt
 i0Ap/38j2GT2WNvJWa+b5g32+VIfEnBlyWXWNqho5MbvBHRswhX9rYAENBkiD9vvYUUK
 I3XWbAt94y3PwY6EzB9xFCKGrKjjdI8sRItn4wAGxWyu3RR0D7+u7+MnWHFe79gIH9f8
 RYe4/6WUApg3UMd6p2oImqBOfn1xYCzWCrluWwLDUDg1DM7HZmUNj5d6XDumGR3E3CVI
 bkhg==
X-Received: by 10.50.153.43 with SMTP id vd11mr5043680igb.13.1367117418140;
 Sat, 27 Apr 2013 19:50:18 -0700 (PDT)
Received: from 53.imp.bsdimp.com
 (50-78-194-198-static.hfc.comcastbusiness.net. [50.78.194.198])
 by mx.google.com with ESMTPSA id o10sm11909302igh.2.2013.04.27.19.50.16
 for <multiple recipients>
 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128);
 Sat, 27 Apr 2013 19:50:17 -0700 (PDT)
Sender: Warner Losh <wlosh@bsdimp.com>
Subject: Re: clang/ARM regression
Mime-Version: 1.0 (Apple Message framework v1085)
Content-Type: text/plain; charset=us-ascii
From: Warner Losh <imp@bsdimp.com>
In-Reply-To: <517C868B.4060002@bluezbox.com>
Date: Sat, 27 Apr 2013 20:50:15 -0600
Content-Transfer-Encoding: quoted-printable
Message-Id: <F67C03C0-3C31-4B1E-846D-9361A712735A@bsdimp.com>
References: <517C868B.4060002@bluezbox.com>
To: Oleksandr Tymoshenko <gonzo@bluezbox.com>
X-Mailer: Apple Mail (2.1085)
X-Gm-Message-State: ALoCoQlQipp4gHHViwT12/1KNZOhGYLMvVR9b/osS/yUPmz4xdMIxzGMnUNwJmfngeGEc6B6uVtT
Cc: arm@freebsd.org
X-BeenThere: freebsd-arm@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Porting FreeBSD to the StrongARM Processor <freebsd-arm.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm>
List-Post: <mailto:freebsd-arm@freebsd.org>
List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arm>,
 <mailto:freebsd-arm-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 28 Apr 2013 02:50:19 -0000

Turning WITNESS off also fixes it :)

Sadly, the stack traceback stuff seems busted lately too...

Warner

On Apr 27, 2013, at 8:16 PM, Oleksandr Tymoshenko wrote:

> Hi,
>=20
> There seems to be some kind of regression in recently imported clang =
on ARM.
> Beaglebone kernel built using clang  with WITNESS enabled panics
> on boot. If I change optimization flags from -O to -O0 it works fine.
> I'm trying to isolate test case but it panics fairly early in boot =
process
> so it's not easy. If somebody tracks clang development and aware of
> known issues that might cause it - please share.
>=20
> So far I tried fix from this bug but it didn't help:
> http://llvm.org/bugs/show_bug.cgi?id=3D15581
>=20
> _______________________________________________
> freebsd-arm@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-arm
> To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"