From owner-freebsd-current Tue May 29 9:47:53 2001 Delivered-To: freebsd-current@freebsd.org Received: from pike.osd.bsdi.com (pike.osd.bsdi.com [204.216.28.222]) by hub.freebsd.org (Postfix) with ESMTP id BCFF037B422 for ; Tue, 29 May 2001 09:47:50 -0700 (PDT) (envelope-from jhb@foo.osd.bsdi.com) Received: from foo.osd.bsdi.com (root@foo.osd.bsdi.com [204.216.28.137]) by pike.osd.bsdi.com (8.11.1/8.9.3) with ESMTP id f4TGlnK04831; Tue, 29 May 2001 09:47:49 -0700 (PDT) (envelope-from jhb@foo.osd.bsdi.com) Received: (from jhb@localhost) by foo.osd.bsdi.com (8.11.1/8.11.1) id f4TGllc58180; Tue, 29 May 2001 09:47:47 -0700 (PDT) (envelope-from jhb) Message-ID: X-Mailer: XFMail 1.4.0 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <20010527104228P.ken@tyd2.tydfam.machida.tokyo.jp> Date: Tue, 29 May 2001 09:47:47 -0700 (PDT) From: John Baldwin To: Takeshi Ken Yamada Subject: RE: Q) lock order reversal Cc: freebsd-current@FreeBSD.ORG Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 27-May-01 Takeshi Ken Yamada wrote: > Hi! > With recent -current kernel, I get message below with P3@800Mhz X 2 > when booting up. > > What is wrong? > > lock order reversal > 1st 0xc04d4ac0 mntvnode @ ../../ufs/ffs/ffs_vfsops.c 1007 > 2nd 0xdb3001ac vnode interlock @ ../../ufs/ffs/ffs_vfsops.c 1016 This is a FAQ. These reversals have been around for a long time, we just haven't had the tools to find them before. -- John Baldwin -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.Baldwin.cx/~john/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message