From owner-freebsd-current@FreeBSD.ORG  Sat Dec 10 15:44:15 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: current@freebsd.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 5063A16A41F
	for <current@freebsd.org>; Sat, 10 Dec 2005 15:44:15 +0000 (GMT)
	(envelope-from mcsi@mcsi.pp.ru)
Received: from portpc-design.spb.ru (portpc-design.spb.ru [81.176.64.110])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 3EC8B43D76
	for <current@freebsd.org>; Sat, 10 Dec 2005 15:44:08 +0000 (GMT)
	(envelope-from mcsi@mcsi.pp.ru)
Received: from [85.140.159.33] (ppp85-140-159-33.pppoe.mtu-net.ru
	[85.140.159.33]) (authenticated bits=0)
	by portpc-design.spb.ru (8.13.5/8.13.5) with ESMTP id jBAFi44q026714
	for <current@freebsd.org>; Sat, 10 Dec 2005 18:44:04 +0300 (MSK)
	(envelope-from mcsi@mcsi.pp.ru)
Message-ID: <439AF7C0.9060801@mcsi.pp.ru>
Date: Sat, 10 Dec 2005 18:44:00 +0300
From: Maxim Maximov <mcsi@mcsi.pp.ru>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.12) Gecko/20051204
X-Accept-Language: ru, en-us, en
MIME-Version: 1.0
To: current@freebsd.org
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: ClamAV version 0.87.1,
	clamav-milter version 0.87 on 81.176.64.226
X-Virus-Status: Clean
Cc: 
Subject: LOR in pcm
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/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: Sat, 10 Dec 2005 15:44:15 -0000

Hi all.

	Got this on SMP CURRENT from Sun Dec  4 22:06:46 MSK 2005.
	I have no recording devices, FWIW.

lock order reversal:
  1st 0xc35884c0 pcm0 (sound cdev) @ /usr/src/sys/dev/sound/pcm/dsp.c:277
  2nd 0xc3562ac0 pcm0:record:0 (pcm record channel) @ 
/usr/src/sys/dev/sound/pcm/dsp.c:290
KDB: stack backtrace:
kdb_backtrace(0,ffffffff,c09a4d28,c09a4cb0,c0929504) at kdb_backtrace+0x29
witness_checkorder(c3562ac0,9,c08ab43d,122) at witness_checkorder+0x580
_mtx_lock_flags(c3562ac0,0,c08ab43d,122,1) at _mtx_lock_flags+0x5b
dsp_open(c3586c00,7,2000,c436cc00,c0995100) at dsp_open+0x2b2
giant_open(c3586c00,7,2000,c436cc00,c3586c00) at giant_open+0x30
devfs_open(db324a18) at devfs_open+0x223
VOP_OPEN_APV(c0921cc0,db324a18) at VOP_OPEN_APV+0x7e
vn_open_cred(db324b70,db324c70,468,c3ee6b80,43) at vn_open_cred+0x448
vn_open(db324b70,db324c70,468,43,c09e2ad0) at vn_open+0x1e
kern_open(c436cc00,15696050,0,7,bfbf6478) at kern_open+0xb6
open(c436cc00,db324d04,86,c06acb33,c436cc00) at open+0x1a
syscall(14da003b,bf2f003b,bf2f003b,bfbf6488,15696050) at syscall+0x27e
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (5, FreeBSD ELF32, open), eip = 0x28a70b5f, esp = 
0xbfbf644c, ebp = 0xbfbf6478 ---

-- 
Maxim Maximov