From owner-freebsd-current@FreeBSD.ORG  Thu Jan  1 01:16:14 2015
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@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 C0286E5D
 for <freebsd-current@freebsd.org>; Thu,  1 Jan 2015 01:16:14 +0000 (UTC)
Received: from mail.turbocat.net (heidi.turbocat.net [88.198.202.214])
 (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 7BE366474E
 for <freebsd-current@freebsd.org>; Thu,  1 Jan 2015 01:16:14 +0000 (UTC)
Received: from laptop015.home.selasky.org
 (cm-176.74.213.204.customer.telag.net [176.74.213.204])
 (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 A8B381FE023;
 Thu,  1 Jan 2015 02:16:05 +0100 (CET)
Message-ID: <54A4A002.8010802@selasky.org>
Date: Thu, 01 Jan 2015 02:16:50 +0100
From: Hans Petter Selasky <hps@selasky.org>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:31.0) Gecko/20100101 Thunderbird/31.3.0
MIME-Version: 1.0
To: Ivan Klymenko <fidaj@ukr.net>
Subject: Re: [RFC] kern/kern_timeout.c rewrite in progress
References: <54A1B38C.1000709@selasky.org>
 <20150101005613.4f788b0c@nonamehost.local> <54A49CA5.2060801@selasky.org>
In-Reply-To: <54A49CA5.2060801@selasky.org>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
Cc: FreeBSD Current <freebsd-current@freebsd.org>
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://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: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 01 Jan 2015 01:16:14 -0000

On 01/01/15 02:02, Hans Petter Selasky wrote:
> On 12/31/14 23:56, Ivan Klymenko wrote:
>> В Mon, 29 Dec 2014 21:03:24 +0100
>> Hans Petter Selasky <hps@selasky.org> пишет:
>>
>
> Hi,
>
> Is your kernel compiled with Witness? Do you see any lock order reversal
> warnings?
>
> Can you do from kgdb:
>
> thread apply all bt
>
> And send me the result off-list?
>
> I'll have a closer look at this tomorrow.
>
>>
>> panic: spin lock held too long
>> http://paste.org.ru/?acf7io
>>
>
> Thank you!
>

Hi,

This backtrace looks incorrect, because I cannot find where teken code 
calls into callout_xxx().

--HPS

cpuid = 2
KDB: stack backtrace:
#0 0xffffffff80a03680 at kdb_backtrace+0x60
#1 0xffffffff809c19a1 at panic+0x1c1
#2 0xffffffff809a3d57 at _mtx_lock_spin_cookie+0x257
#3 0xffffffff809da367 at callout_lock+0x87
#4 0xffffffff809da3c0 at callout_restart_async+0x20
#5 0xffffffff809da22d at callout_reset_sbt_on+0xfd
#6 0xffffffff809da64e at callout_schedule+0x2e
#7 0xffffffff80c6c179 at teken_subr_do_putchar+0x79
#8 0xffffffff80c6b80e at teken_state_init+0x2ae
#9 0xffffffff80c6d78e at teken_input_char+0x4e
#10 0xffffffff80c6bb18 at teken_input+0x28
#11 0xffffffff80a15821 at termcn_cnputc+0xc1
#12 0xffffffff80961dd0 at cnputc+0x80
#13 0xffffffff809620e8 at cnputs+0xb8
#14 0xffffffff80a09561 at putchar+0x151
#15 0xffffffff80a08186 at kvprintf+0xf6
#16 0xffffffff80a09bad at _vprintf+0x8d
#17 0xffffffff80a09dc3 at printf+0x53