From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932932Ab1JDR1g (ORCPT ); Tue, 4 Oct 2011 13:27:36 -0400 Received: from cantor2.suse.de ([195.135.220.15]:51200 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932788Ab1JDR1g (ORCPT ); Tue, 4 Oct 2011 13:27:36 -0400 Date: Tue, 4 Oct 2011 09:52:03 -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: <20111004165203.GD786@suse.de> References: <4E89E374.8020804@t-online.de> <20111003233216.GA30470@suse.de> <4E8AE0BC.70203@t-online.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4E8AE0BC.70203@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 Tue, Oct 04, 2011 at 12:32:28PM +0200, Knut Petersen wrote: > Both 3.0.4 and 3.0.6 were two times able to write to the flash drive that still identifies > itself as a flash drive without problems with dd if=/dev/zero of=/dev/sda bs=65536. > > Conclusion: Either there is/was a problem with massive parallel writes to at least two > usb (flash) drives, or there is a problem with one of the flash drives itself. I would place the blame here on the hardware, most usb flash drives can not handle high rates of data, especially in parallel :( > Any idea how to make a flash drive from that "memory bar"? I have no idea, sorry. greg k-h