From owner-freebsd-current@FreeBSD.ORG Fri Dec 16 20:10:49 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CCCEC16A41F for ; Fri, 16 Dec 2005 20:10:49 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from speedfactory.net (mail6.speedfactory.net [66.23.216.219]) by mx1.FreeBSD.org (Postfix) with ESMTP id D5A9B43D5C for ; Fri, 16 Dec 2005 20:10:48 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (unverified [66.23.211.162]) by speedfactory.net (SurgeMail 3.5b3) with ESMTP id 3960496 for multiple; Fri, 16 Dec 2005 15:08:49 -0500 Received: from localhost (john@localhost [127.0.0.1]) by server.baldwin.cx (8.13.1/8.13.1) with ESMTP id jBGKAgBK081855; Fri, 16 Dec 2005 15:10:42 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: freebsd-current@freebsd.org Date: Fri, 16 Dec 2005 14:54:21 -0500 User-Agent: KMail/1.8.2 References: <17314.60552.595375.783753@grasshopper.cs.duke.edu> In-Reply-To: <17314.60552.595375.783753@grasshopper.cs.duke.edu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200512161454.22232.jhb@freebsd.org> X-Virus-Scanned: ClamAV 0.87.1/1210/Thu Dec 15 10:23:22 2005 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-2.8 required=4.2 tests=ALL_TRUSTED autolearn=failed version=3.0.2 X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on server.baldwin.cx X-Server: High Performance Mail Server - http://surgemail.com r=1653887525 Cc: Andrew Gallatin Subject: Re: PREEMPTION vs ndisulator X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Fri, 16 Dec 2005 20:10:49 -0000 On Friday 16 December 2005 11:34 am, Andrew Gallatin wrote: > I'm trying to use an ndis driver on an amd64 machine running > FreeBSD/amd64 -current from yesterday. If I enable PREEMPTION, the > machine hangs when loading the driver (kldload never returns): > > ndis0: mem > 0xfc000000-0xfcffffff,0xfdf00000-0xfdffffff irq 18 at device 0.0 on pci5 > ndis0: NDIS API version: 5.1 > > > Witness detects no problems, and if I disable PREEMPTION, the driver > seems to work fine. Is PREEMPTION not safe to be used with the > ndisulator, or is there a problem with the ndis driver itself? > > I've included some very brief debugging info below.. Looks like an ithread has preempted your driver's start routine. If you let it run some more and then break into ddb is the same thread (pid 11) still running? Also, which process is pid 11? -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org