From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262026AbUENXDB (ORCPT ); Fri, 14 May 2004 19:03:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263117AbUENXDB (ORCPT ); Fri, 14 May 2004 19:03:01 -0400 Received: from fw.osdl.org ([65.172.181.6]:11441 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262026AbUENXC7 (ORCPT ); Fri, 14 May 2004 19:02:59 -0400 Date: Fri, 14 May 2004 16:05:24 -0700 From: Andrew Morton To: "R. J. Wysocki" Cc: ak@muc.de, linux-kernel@vger.kernel.org Subject: Re: 2.6.6-mm2(-mm1,-bk1): SMP bug on dual AMD64 Message-Id: <20040514160524.57dd9de4.akpm@osdl.org> In-Reply-To: <200405142328.59471.rjwysocki@sisk.pl> References: <200405142328.59471.rjwysocki@sisk.pl> X-Mailer: Sylpheed version 0.9.7 (GTK+ 1.2.10; i586-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org "R. J. Wysocki" wrote: > > I've just compiled the 2.6.6-mm2 kernel (with gcc-3.4) and tried to run it. > Well, it generally works, but there seems to be an SMP bug that may be > triggered with the help of a USB storage device (please see the attached > log). The device works fine in spite of it, though. > > This bug seems to be present in the 2.6.6-mm1 and 2.6.6-bk1, but it is not > present in the 2.6.6, apparently. > > My system is a dual Opteron and I use an add-on USB 2.0 card based on the NEC > chipset (the .config is attached). The WARN_ON() backtrace is unrelated to USB - it is due to SCSI calling vmalloc/vfree with interrupts disabled. People are working on that. As for this: May 14 23:57:09 chimera kernel: usb usb2: string descriptor 0 read error: -108 May 14 23:57:09 chimera last message repeated 2 times It has been reported before and I assume people are working it, but it would be nice to have confirmation of that...