From owner-freebsd-current@freebsd.org Sat Dec 7 02:08:12 2019 Return-Path: Delivered-To: freebsd-current@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C6DA51C2D08 for ; Sat, 7 Dec 2019 02:08:12 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.95.76.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "troutmask", Issuer "troutmask" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 47VCXr4c1vz4Gq9; Sat, 7 Dec 2019 02:08:12 +0000 (UTC) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) by troutmask.apl.washington.edu (8.15.2/8.15.2) with ESMTPS id xB7289JK001288 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Fri, 6 Dec 2019 18:08:09 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost) by troutmask.apl.washington.edu (8.15.2/8.15.2/Submit) id xB7289Zr001287; Fri, 6 Dec 2019 18:08:09 -0800 (PST) (envelope-from sgk) Date: Fri, 6 Dec 2019 18:08:09 -0800 From: Steve Kargl To: Alexander Motin Cc: Warner Losh , FreeBSD Current Subject: Re: CAM breaks USB [was Re: USB causing boot to hang] Message-ID: <20191207020809.GA1234@troutmask.apl.washington.edu> Reply-To: sgk@troutmask.apl.washington.edu References: <20191206202316.GA1053@troutmask.apl.washington.edu> <20191206223144.GA3224@troutmask.apl.washington.edu> <20191206225231.GA949@troutmask.apl.washington.edu> <20191206234105.GA1027@troutmask.apl.washington.edu> <3df3ff25-9f62-6f0f-7823-e846a43725eb@FreeBSD.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3df3ff25-9f62-6f0f-7823-e846a43725eb@FreeBSD.org> User-Agent: Mutt/1.12.2 (2019-09-21) X-Rspamd-Queue-Id: 47VCXr4c1vz4Gq9 X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-6.00 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; REPLY(-4.00)[]; NEURAL_HAM_LONG(-1.00)[-0.999,0] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 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: Sat, 07 Dec 2019 02:08:12 -0000 On Fri, Dec 06, 2019 at 07:09:55PM -0500, Alexander Motin wrote: > On 06.12.2019 18:41, Steve Kargl wrote: > > On Fri, Dec 06, 2019 at 06:15:32PM -0500, Alexander Motin wrote: > >> On 06.12.2019 17:52, Steve Kargl wrote: > >>> On Fri, Dec 06, 2019 at 03:33:09PM -0700, Warner Losh wrote: > >>>> On Fri, Dec 6, 2019 at 3:31 PM Steve Kargl > >>>> wrote: > >>>>> The problem seems to be caused 355010. This is a commit to > >>>>> fix CAM, which seems to break USB. > >>>>> > >>>> Yes. mav@ made this change... > >>>> > >>> src/UPDATING seems to be missing an entry about CAM breaking USB. > >> > >> And also that moon is made of cheese. :-\ > > > > Not sure what you mean. > > I mean that if we are going to write there random fairy-tales, then I > prefer my moon. > > If serious, then my change did not change semantics of any existing > tunables, only the way some of them are implemented, so there was > nothing to write in UPDATING. The system boots at 355009. The system hangs at 355010. How about adding: After revision 355010, the cam subsystem may cause the usb subsystem to hang during boot. It is recommended to disable usb. You even hint at problems in your original commit message. The system is at work and unattended until Monday. -- Steve