From owner-freebsd-emulation@FreeBSD.ORG  Thu Aug 20 19:49:34 2009
Return-Path: <owner-freebsd-emulation@FreeBSD.ORG>
Delivered-To: emulation@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 9E36B106568D
	for <emulation@freebsd.org>; Thu, 20 Aug 2009 19:49:34 +0000 (UTC)
	(envelope-from uqs@spoerlein.net)
Received: from acme.spoerlein.net (cl-43.dus-01.de.sixxs.net
	[IPv6:2a01:198:200:2a::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 2C0638FC43
	for <emulation@freebsd.org>; Thu, 20 Aug 2009 19:49:34 +0000 (UTC)
Received: from acme.spoerlein.net (localhost.spoerlein.net [127.0.0.1])
	by acme.spoerlein.net (8.14.3/8.14.3) with ESMTP id n7KJnW9f067151
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
	for <emulation@freebsd.org>; Thu, 20 Aug 2009 21:49:32 +0200 (CEST)
	(envelope-from uqs@spoerlein.net)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=spoerlein.net;
	s=dkim200908; t=1250797772;
	bh=N5ylEPYWXM1SlgoGYo27xQMC/k589ByuBdolZ74zCFI=;
	h=Date:From:To:Subject:Message-ID:MIME-Version:Content-Type;
	b=cf7BcQ49yGoFE1hlbnb41e69bElJwySfmLz+MmJ0GntxxNvyp66dC//VHEZUvu83b
	XPzapU3k02xP253lE/C/3Pmqg9AlNak7DXmumsLTOJVK35Fa5X964ygsrTNU86CayH
	DhRMqCHnG7izQT0p9E/l1VKvFrHkXORH81ySVmoA=
Received: (from uqs@localhost)
	by acme.spoerlein.net (8.14.3/8.14.3/Submit) id n7KJnW8m067150
	for emulation@freebsd.org; Thu, 20 Aug 2009 21:49:32 +0200 (CEST)
	(envelope-from uqs@spoerlein.net)
Date: Thu, 20 Aug 2009 21:49:32 +0200
From: Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs@spoerlein.net>
To: emulation@freebsd.org
Message-ID: <20090820194932.GA66475@acme.spoerlein.net>
Mail-Followup-To: Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs@spoerlein.net>,
	emulation@freebsd.org
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.20 (2009-06-14)
Cc: 
Subject: acquiring duplicate lock of same type: "ftlk"
X-BeenThere: freebsd-emulation@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Development of Emulators of other operating systems
	<freebsd-emulation.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-emulation>, 
	<mailto:freebsd-emulation-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-emulation>
List-Post: <mailto:freebsd-emulation@freebsd.org>
List-Help: <mailto:freebsd-emulation-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-emulation>, 
	<mailto:freebsd-emulation-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 20 Aug 2009 19:49:34 -0000

Hi, I'm on RELENG_8/amd64 now and while using flash inside FF3 I
observed the following

acquiring duplicate lock of same type: "ftlk"
 1st ftlk @ /data/freebsd-head/sys/modules/linux/../../compat/linux/linux_futex.c:177
 2nd ftlk @ /data/freebsd-head/sys/modules/linux/../../compat/linux/linux_futex.c:203
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
_witness_debugger() at _witness_debugger+0x2e
witness_checkorder() at witness_checkorder+0x8ef
_sx_xlock() at _sx_xlock+0x55
futex_get0() at futex_get0+0xfe
linux_sys_futex() at linux_sys_futex+0x96
ia32_syscall() at ia32_syscall+0x19c
Xint0x80_syscall() at Xint0x80_syscall+0x95
--- syscall (240, Linux ELF32, linux_sys_futex), rip = 0x287d89b3, rsp = 0xffffaa8c, rbp = 0x4000001 ---

I'm running with linux-f8 (f10 gave me trouble last time I tried on CURRENT) and flash10.

Is this a known problem? Is someone working on this or shall I file a PR?

Regards,
Uli

PS: please keep me CC'ed. thx.