From owner-freebsd-security Thu Feb 14 5:31:21 2002 Delivered-To: freebsd-security@freebsd.org Received: from sneakerz.org (sneakerz.org [216.33.66.254]) by hub.freebsd.org (Postfix) with ESMTP id E788637B400 for ; Thu, 14 Feb 2002 05:31:16 -0800 (PST) Received: by sneakerz.org (Postfix, from userid 1023) id 518195D006; Thu, 14 Feb 2002 07:31:11 -0600 (CST) Date: Thu, 14 Feb 2002 07:31:11 -0600 From: Maxime Henrion To: freebsd-security@freebsd.org Cc: kurnik@kurnik.pl Subject: Re: FreeBSD 4.5 syncache problem Message-ID: <20020214073111.C26590@sneakerz.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: ; from kurnik@kurnik.pl on Thu, Feb 14, 2002 at 02:12:47PM +0100 Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org kurnik@kurnik.pl (kurnik@kurnik.pl) wrote: > Hi! > > I'd like to migrate my Linux powered server to FreeBSD 4.5 but there's > a critical syncache related bug that makes it easy to remotely cause > kernel panic on any server running FreeBSD 4.5. > (more on this bug at www.freebsd.org/cgi/query-pr.cgi?pr=kern/34658) Could you probide a way to reliable reproduce it ? I'm sure this would help a lot getting this bug fixed, since it's not mentioned in the PR. > My questions: > > 1. Is there a simple way to fix this problem? (e.g. disabling syncache, > whatever) Look at the various sysctls in net.inet.tcp, there's probably one to this purpose. > 2. Is it a good idea to run FreeBSD 4.5 on a server or should I consider > some older releases like 4.4 or 4.0? I'd say disable syncache if possible and run 4.5. Maxime Henrion To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message