From owner-freebsd-stable@FreeBSD.ORG  Tue May 30 13:52:53 2006
Return-Path: <owner-freebsd-stable@FreeBSD.ORG>
X-Original-To: freebsd-stable@freebsd.org
Delivered-To: freebsd-stable@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id DDB0416A632
	for <freebsd-stable@freebsd.org>; Tue, 30 May 2006 13:52:53 +0000 (UTC)
	(envelope-from mortmann@googlemail.com)
Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.186])
	by mx1.FreeBSD.org (Postfix) with ESMTP id F245143D7B
	for <freebsd-stable@freebsd.org>; Tue, 30 May 2006 13:52:39 +0000 (GMT)
	(envelope-from mortmann@googlemail.com)
Received: by nf-out-0910.google.com with SMTP id g2so204451nfe
	for <freebsd-stable@freebsd.org>; Tue, 30 May 2006 06:52:38 -0700 (PDT)
DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=googlemail.com;
	h=received:message-id:date:from:user-agent:x-accept-language:mime-version:to:cc:subject:references:in-reply-to:content-type:content-transfer-encoding;
	b=miGfumQTnd+qytCbXehK/sf2MfHOv/NpDYKAiDUHZ8dWyKtBRJYrZEDIV0BRPz83SDPKXtUruZ80uFei6A8FH8WRcW7Eq2A6WUu/QfcHlyckwqb5gRlpdI2Q0Oa9Lzp2QSgljWhZo1ZtWvriY6dtZp3c858Q3TWUJfi2bnCUgNQ=
Received: by 10.49.15.13 with SMTP id s13mr2587829nfi;
	Tue, 30 May 2006 06:52:38 -0700 (PDT)
Received: from ?192.168.1.22? ( [217.91.92.201])
	by mx.gmail.com with ESMTP id q27sm5307398nfc.2006.05.30.06.52.37;
	Tue, 30 May 2006 06:52:38 -0700 (PDT)
Message-ID: <447C4E22.4080900@googlemail.com>
Date: Tue, 30 May 2006 15:52:34 +0200
From: Michael Ortmann <mortmann@googlemail.com>
User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317)
X-Accept-Language: de-DE, de, en-us, en
MIME-Version: 1.0
To: Robert Watson <rwatson@FreeBSD.org>
References: <447AAB44.9080402@googlemail.com>
	<20060530144516.E25073@fledge.watson.org>
In-Reply-To: <20060530144516.E25073@fledge.watson.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-stable@freebsd.org
Subject: Re: reproduceable kernel panic when trying to use tap0 interface
 (sparc64)
X-BeenThere: freebsd-stable@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Production branch of FreeBSD source code <freebsd-stable.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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: Tue, 30 May 2006 13:53:01 -0000

Robert Watson schrieb:

> This sounds like a kernel code alignment bug, which is likely easy to 
> fix. However...

the bug has been fixed (fast!):

http://www.freebsd.org/cgi/query-pr.cgi?pr=sparc64/98084

>> == how to reproduce the kernel panic ==
>>
>> # cat /dev/zero >/dev/tap0
>>
>> tap0: Ethernet address: 00:bd:00:02:10:00
>> panic: trap: memory address not aligned
>> cpuid = 0
>> KDB: enter: panic
>> [thread 449 tid 100044]
>> Stopped at kdb_enter+0x3c: ta %xcc, 1
> 
> 
> Whoops, the gdb stack trace below looks corrupted and/or wrong.  Could 
> you instead provide the output of the "trace" command in DDB?  DDB 
> traces can be more reliable under some circumstances, and more resistant 
> to mistakes such as matching the wrong kernel to the wrong core, gdb 
> bugs, and so on.

ill keep it in mind for the next time, thanks.

regards,
Michael Ortmann