From owner-freebsd-stable@FreeBSD.ORG Mon Sep 29 18:43:47 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 737D21065699 for ; Mon, 29 Sep 2008 18:43:47 +0000 (UTC) (envelope-from henrik@50hz.ws) Received: from dsp.50hz.ws (50hz.ws [78.46.69.237]) by mx1.freebsd.org (Postfix) with ESMTP id 2D65B8FC1D for ; Mon, 29 Sep 2008 18:43:47 +0000 (UTC) (envelope-from henrik@50hz.ws) Received: by dsp (Postfix, from userid 1001) id 7BD399B4AA; Mon, 29 Sep 2008 20:13:39 +0200 (CEST) Date: Mon, 29 Sep 2008 20:13:39 +0200 From: Henrik Friedrichsen To: FreeBSD stable Message-ID: <20080929181339.GA12554@dsp.50hz.ws> Mail-Followup-To: FreeBSD stable References: <48E02557.2020303@incunabulum.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48E02557.2020303@incunabulum.net> User-Agent: Mutt/1.4.2.3i Subject: Re: USB detach/attach hangs with 7.0-RELEASE and 7.1-PRERELEASE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Sep 2008 18:43:47 -0000 On Mon, Sep 29, 2008 at 01:46:15AM +0100, Bruce M Simpson wrote: > Hi, > > I've noticed some general instability with plugging in or removing USB > devices with FreeBSD 7.x, even when the devices are not actively in use. > > I had this happen with umass and ucom devices 3 times today. The machine > hangs solid, there are no obvious signs of a panic or trap to DDB. I > can't provide backtraces unfortunately -- these hangs happen on both my > laptop and desktop, and I usually have X running -- if I had more > specific information, I'd open a PR. > > Again, there seems to be no reason why this should happen, the devices > are off-the-shelf consumer items known to work with existing drivers, > and have been repeatedly used in other OSes without these hangs > happening; consider this an "anecdotal report". > > [For some reason my IBM laptop will often not allow me to break into DDB > on a driver related panic, and will just immediately reboot -- I lack > free time to track down exactly why this could be. > My desktop has a USB keyboard and this appears not to be supported by > DDB, I ordered a PS/2 keyboard which hasn't arrived, but that's another > story.] > > thanks > BMS > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" Hey, I can confirm those problems, however I can't provide dumps either. I remember the kernel panicing with PAGE_FAULT errors though. Good to know, that I'm not the only one with those problems though. Henrik.