From owner-freebsd-current@FreeBSD.ORG Tue Feb 18 05:27:29 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 95AD74A3 for ; Tue, 18 Feb 2014 05:27:29 +0000 (UTC) Received: from dmz-mailsec-scanner-8.mit.edu (dmz-mailsec-scanner-8.mit.edu [18.7.68.37]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 22BCB1CC7 for ; Tue, 18 Feb 2014 05:27:28 +0000 (UTC) X-AuditID: 12074425-f79906d000000cf9-3e-5302ef39ee3d Received: from mailhub-auth-3.mit.edu ( [18.9.21.43]) (using TLS with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by dmz-mailsec-scanner-8.mit.edu (Symantec Messaging Gateway) with SMTP id 3C.84.03321.93FE2035; Tue, 18 Feb 2014 00:27:21 -0500 (EST) Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) by mailhub-auth-3.mit.edu (8.13.8/8.9.2) with ESMTP id s1I5RKbM025729; Tue, 18 Feb 2014 00:27:21 -0500 Received: from multics.mit.edu (system-low-sipb.mit.edu [18.187.2.37]) (authenticated bits=56) (User authenticated as kaduk@ATHENA.MIT.EDU) by outgoing.mit.edu (8.13.8/8.12.4) with ESMTP id s1I5RIaV009757 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 18 Feb 2014 00:27:19 -0500 Received: (from kaduk@localhost) by multics.mit.edu (8.12.9.20060308) id s1I5RIHS018182; Tue, 18 Feb 2014 00:27:18 -0500 (EST) Date: Tue, 18 Feb 2014 00:27:18 -0500 (EST) From: Benjamin Kaduk To: Dennis Glatting Subject: Re: LOR r262009 In-Reply-To: <1392676364.45152.12.camel@btw.pki2.com> Message-ID: References: <1392676364.45152.12.camel@btw.pki2.com> User-Agent: Alpine 1.10 (GSO 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrHIsWRmVeSWpSXmKPExsUixCmqrWv5ninY4NJzGYs5bz4wWXzb9IfV gcljxqf5LB4Tdm1mCmCK4rJJSc3JLEst0rdL4MqY/+4ac0ELS8XSKSdZGhhXM3cxcnJICJhI fF+2gxXCFpO4cG89WxcjF4eQwGwmiS0be1kgnI2MEuenr4bKHGKS6GjtZYVwGhglNr3vYAHp ZxHQluj5Oh9sLpuAisTMNxvZQGwRATWJ+5M2g9nMAvIS/69cZgKxhQUkJFb9vgzWyylgKrHn bhtYnFfAQeLW4tdgNwkB3bekZQVYXFRAR2L1/iksEDWCEidnPmGBmGkpce7PdbYJjIKzkKRm IUktYGRaxSibklulm5uYmVOcmqxbnJyYl5dapGuhl5tZopeaUrqJERSs7C6qOxgnHFI6xCjA wajEw/tDiylYiDWxrLgy9xCjJAeTkihv0iugEF9SfkplRmJxRnxRaU5q8SFGCQ5mJRHeO/eB crwpiZVVqUX5MClpDhYlcd5ai19BQgLpiSWp2ampBalFMFkZDg4lCV7Vd0CNgkWp6akVaZk5 JQhpJg5OkOE8QMNtQGp4iwsSc4sz0yHypxgVpcR5Xd4CJQRAEhmleXC9sGTyilEc6BVhXmeQ dh5gIoLrfgU0mAlosNdeRpDBJYkIKakGxuSQw/+Z4nUalycq8aqIGEyYMet9cf8Fe5X0Aw7N 71eoyDOy35DPvVPAyjzbT/hq+9fbL2rYm8zWmHsVf/Kp6+BXrPea+9PE/+W+pZbvlVzLTwvM Yaz6sCxT5t8R/37eSZs+XH/4a7WivmCe0Hu3SV5SS3bM2hfX9XPiztBf/icUXDzjpq2rVGIp zkg01GIuKk4EABEvzaUBAwAA Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 18 Feb 2014 05:27:29 -0000 On Mon, 17 Feb 2014, Dennis Glatting wrote: > Decided to try clang 3.4 under CURRENT and got a LOR under ESXi: > > > Feb 17 14:13:10 Head kernel: lock order reversal: > Feb 17 14:13:10 Head kernel: 1st 0xfffffe00f6868548 bufwait (bufwait) > @ /usr/src/sys/kern/vfs_bio.c:3081 > Feb 17 14:13:10 Head kernel: 2nd 0xfffff800035d3c00 dirhash (dirhash) > @ /usr/src/sys/ufs/ufs/ufs_dirhash.c:284 That looks like a well-known false positive, http://sources.zabbadoz.net/freebsd/lor.html numbr 261. -Ben