From owner-freebsd-current@freebsd.org  Sat Feb 17 16:23:33 2018
Return-Path: <owner-freebsd-current@freebsd.org>
Delivered-To: freebsd-current@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id CB87BF1D3E7
 for <freebsd-current@mailman.ysv.freebsd.org>;
 Sat, 17 Feb 2018 16:23:33 +0000 (UTC) (envelope-from hps@selasky.org)
Received: from mail.turbocat.net (turbocat.net [88.99.82.50])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 62BA787B17;
 Sat, 17 Feb 2018 16:23:33 +0000 (UTC) (envelope-from hps@selasky.org)
Received: from hps2016.home.selasky.org (unknown [62.141.128.70])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (No client certificate requested)
 by mail.turbocat.net (Postfix) with ESMTPSA id 60BB826027E;
 Sat, 17 Feb 2018 17:23:31 +0100 (CET)
Subject: Re: panic in daprobedone: Unholding 4 with cnt = 0
To: Warner Losh <imp@bsdimp.com>
Cc: Warner Losh <imp@freebsd.org>,
 FreeBSD Current <freebsd-current@freebsd.org>
References: <fc0dc6c5-2ef4-db6b-cfa8-7868144ba6ab@selasky.org>
 <CANCZdfq7w+sTQQwRRya0kKfEwZTpmApB4jNCEZhP=93gcvzckg@mail.gmail.com>
 <56adf14f-54d0-2669-cb12-139f06a370b5@selasky.org>
 <CANCZdfocEPAvfeHKqXMzwP1ooXWJgea6XRPhYJnWvoJ2nrgMcQ@mail.gmail.com>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <a0b919a3-4baf-80f7-1f01-4517839a8890@selasky.org>
Date: Sat, 17 Feb 2018 17:20:34 +0100
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101
 Thunderbird/52.5.2
MIME-Version: 1.0
In-Reply-To: <CANCZdfocEPAvfeHKqXMzwP1ooXWJgea6XRPhYJnWvoJ2nrgMcQ@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/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: <https://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 17 Feb 2018 16:23:34 -0000

On 02/17/18 16:15, Warner Losh wrote:
> I've done that with my systems here...
> 
> If you can reliably reproduce it, booting a kernel with 'options
> DA_TRACK_REFS=2' in the kernel config and send me the output?
> 
> Warner

I have a reproduction. I'll send you the photo off-list.

--HPS