Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754520Ab0LGPCQ (ORCPT ); Tue, 7 Dec 2010 10:02:16 -0500 Received: from mail-ww0-f42.google.com ([74.125.82.42]:62865 "EHLO mail-ww0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753427Ab0LGPCG (ORCPT ); Tue, 7 Dec 2010 10:02:06 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:date :message-id:mime-version:x-mailer:content-transfer-encoding; b=UeVIKxrtMbC3YYNZE7e0PPx9jYgZ8PChp3vGT/n8IV4HUdmz9wnPdzwpvzo2uvedlC bQJPU3WF1xwExyQpHJKr9EH0rINiSU4JBXHht73YvoSg96tAxLheeBIaiOsfgSeajGkN 6jQE17C+5loP7e0029JrdvhusgiNxjep8mKEE= Subject: Re: acpi_button: random oops on boot From: Tobias Karnat To: Bjorn Helgaas Cc: linux-acpi@vger.kernel.org, "linux-kernel@vger.kernel.org" , richard.coe@med.ge.com, jslaby@novell.com In-Reply-To: <20101207051521.GA16804@helgaas.com> References: <1291477752.5096.27.camel@Tobias-Karnat> <201012060928.11307.bjorn.helgaas@hp.com> <1291676503.24968.25.camel@Tobias-Karnat> <201012061626.45962.bjorn.helgaas@hp.com> <1291679699.6246.11.camel@Tobias-Karnat> <20101207051521.GA16804@helgaas.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 07 Dec 2010 16:02:02 +0100 Message-ID: <1291734122.29072.14.camel@Tobias-Karnat> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2009 Lines: 41 Am Montag, den 06.12.2010, 22:15 -0700 schrieb Bjorn Helgaas: > In addition to the isolation ideas I suggested above, you might > boot with "maxcpus=1" and turn on all the Kconfig memory debug > switches. Booting with mminit_loglevel=4 maxcpus=1 causes this to show up: [ 17.364026] usb 1-6: device descriptor read/64, error -110 [ 32.579024] usb 1-6: device descriptor read/64, error -110 [ 32.794012] usb 1-6: new high speed USB device using ehci_hcd and address 6 [ 47.907019] usb 1-6: device descriptor read/64, error -110 [ 63.121019] usb 1-6: device descriptor read/64, error -110 [ 63.335022] usb 1-6: new high speed USB device using ehci_hcd and address 7 [ 73.748031] usb 1-6: device not accepting address 7, error -110 [ 73.861018] usb 1-6: new high speed USB device using ehci_hcd and address 8 [ 84.274018] usb 1-6: device not accepting address 8, error -110 [ 84.285143] hub 1-0:1.0: unable to enumerate USB device on port 6 I have nothing connected to 1-6: Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 004 Device 003: ID 046d:c20a Logitech, Inc. WingMan RumblePad Bus 004 Device 002: ID 03eb:3301 Atmel Corp. at43301 4-Port Hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 003: ID 046d:c062 Logitech, Inc. Bus 002 Device 002: ID 413c:2105 Dell Computer Corp. Model L100 Keyboard Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 005: ID 0dda:2026 Integrated Circuit Solution, Inc. USB2.0 Card Reader Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub It shows up at the same time as the crash happens without maxcpus. However SysRq does work in this case. -Tobias -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/