From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752253Ab1JCXqc (ORCPT ); Mon, 3 Oct 2011 19:46:32 -0400 Received: from cantor2.suse.de ([195.135.220.15]:53858 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751983Ab1JCXqb (ORCPT ); Mon, 3 Oct 2011 19:46:31 -0400 Date: Mon, 3 Oct 2011 16:32:16 -0700 From: Greg KH To: Knut Petersen Cc: linux-kernel@vger.kernel.org Subject: Re: [BUG: kernel 3.0.4] Hard lockup / NULL pointer reference USB / BLOCK Layer Message-ID: <20111003233216.GA30470@suse.de> References: <4E89E374.8020804@t-online.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4E89E374.8020804@t-online.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 03, 2011 at 06:31:48PM +0200, Knut Petersen wrote: > Hi everybody! > > I connected two USB flash drives and tried to erase them using dd: > > dd if=/dev/zero of=/dev/sdc bs=65536 > dd if=/dev/zero of=/dev/sdd bs=65536 > > I left the machine for some hours and found it completely locked > on return. No reaction to the keybard, network access impossible. > A hard reboot was necessary. > > Attached find the relevant part of /var/log/messages and the configuration > of the kernel used. Can you please try 3.0.6 which is now out? There is a USB/block layer fix in it. thanks, greg k-h