From owner-freebsd-hackers@FreeBSD.ORG Thu Aug 7 11:16:30 2003 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4CE4137B401 for ; Thu, 7 Aug 2003 11:16:30 -0700 (PDT) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 98BD543FBD for ; Thu, 7 Aug 2003 11:16:29 -0700 (PDT) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (localhost [127.0.0.1]) by fledge.watson.org (8.12.9/8.12.9) with ESMTP id h77IGJAL023173; Thu, 7 Aug 2003 14:16:19 -0400 (EDT) (envelope-from robert@fledge.watson.org) Received: from localhost (robert@localhost)h77IGJuP023168; Thu, 7 Aug 2003 14:16:19 -0400 (EDT) Date: Thu, 7 Aug 2003 14:16:19 -0400 (EDT) From: Robert Watson X-Sender: robert@fledge.watson.org To: Ted Unangst In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-hackers@freebsd.org Subject: Re: possible deadlocks? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 07 Aug 2003 18:16:30 -0000 On Wed, 6 Aug 2003, Ted Unangst wrote: > My advisor Dawson Engler has written a deadlock detector, and we'd like > some verification. They look like bugs, unless there is some other > reason why two call chains cannot happen at the same time. Neat -- sounds like two good catches given the responses so far. Can we expect more such reports forthcoming? This kind of help will be invaluable in finishing up the fine-grained locking work. Alternatively, do you plan to post the software? Is this static or dynamic analysis? etc, etc? :-) Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Network Associates Laboratories