From owner-freebsd-current@FreeBSD.ORG Sun Nov 16 18:34:47 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A1565F4A; Sun, 16 Nov 2014 18:34:47 +0000 (UTC) Received: from gromit.grondar.org (grandfather.grondar.org [IPv6:2a01:348:0:15:5d59:5c20:0:2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 606C78A3; Sun, 16 Nov 2014 18:34:47 +0000 (UTC) Received: from [2001:470:9174:1:1854:2549:19e3:cc92] by gromit.grondar.org with esmtpsa (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.84 (FreeBSD)) (envelope-from ) id 1Xq4ep-000Dy9-7d; Sun, 16 Nov 2014 18:34:43 +0000 Subject: Re: USB locks up system -- WAS Re: shutdown or acpi problem Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Content-Type: text/plain; charset=utf-8 From: Mark R V Murray In-Reply-To: <1416162718.4781.192.camel@revolution.hippie.lan> Date: Sun, 16 Nov 2014 18:34:42 +0000 Content-Transfer-Encoding: quoted-printable Message-Id: <4F3B4E02-0ADD-46EB-BB90-BF360E810585@FreeBSD.org> References: <20141112224212.GA14013@troutmask.apl.washington.edu> <20141113172533.GA18690@troutmask.apl.washington.edu> <20141113180332.GA18990@troutmask.apl.washington.edu> <20141113181515.GA19117@troutmask.apl.washington.edu> <546515BF.6030508@selasky.org> <20141113212206.GA20802@troutmask.apl.washington.edu> <20141116054141.GA33186@troutmask.apl.washington.edu> <20141116175102.GA35649@troutmask.apl.washington.edu> <1416162070.4781.186.camel@revolution.hippie.lan> <1416162718.4781.192.camel@revolution.hippie.lan> To: Ian Lepore X-Mailer: Apple Mail (2.1993) X-SA-Score: -1.0 Cc: Hans Petter Selasky , Adrian Chadd , freebsd-current , Steve Kargl , Dag-Erling Sm?rgrav X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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: Sun, 16 Nov 2014 18:34:47 -0000 > On 16 Nov 2014, at 18:31, Ian Lepore wrote: >=20 > The point I'm trying to make here is that you trimmed away the = important > part of the prior messages and replied only to the part where Steve's > debugging efforts were somewhat speculating. The non-speculative part > was where he bisected the failure to an exact commit: >=20 >>>> The problem is caused >>>> by r273872. This is the recent random device patch. I have no >>>> idea why removing a usb device would cause the system to lock >>>> up other than random is probably trying to harvest some entropy. I=E2=80=99m sorry my commit caused the problem. I=E2=80=99m also trying to find out why, but I don=E2=80=99t know enough = about USB or mass-storage devices to know why, so this may take me a while. In the meanwhile, I=E2=80=99ll try to help by pointing out things I do know. M --=20 Mark R V Murray