From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934118AbYEIAGh (ORCPT ); Thu, 8 May 2008 20:06:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933143AbYEIAGH (ORCPT ); Thu, 8 May 2008 20:06:07 -0400 Received: from accolon.hansenpartnership.com ([76.243.235.52]:41558 "EHLO accolon.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932914AbYEIAGD (ORCPT ); Thu, 8 May 2008 20:06:03 -0400 Subject: Re: [BUG 2.6.26-rc1] scsi (or sysfs or vm?) oops in sr_probe() From: James Bottomley To: Jeff Garzik Cc: linux-scsi , LKML , Greg KH In-Reply-To: <1209915560.16283.31.camel@localhost.localdomain> References: <481D9C69.8080902@garzik.org> <1209914732.16283.27.camel@localhost.localdomain> <1209915560.16283.31.camel@localhost.localdomain> Content-Type: text/plain Date: Thu, 08 May 2008 19:05:57 -0500 Message-Id: <1210291557.3114.74.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-4.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2008-05-04 at 10:39 -0500, James Bottomley wrote: > On Sun, 2008-05-04 at 10:25 -0500, James Bottomley wrote: > > On Sun, 2008-05-04 at 07:22 -0400, Jeff Garzik wrote: > > > See attached files for additional config detail. > > > > > > Platform summary: AMD64 2x2 (== 4 cores), Fedora 8/x86-64 > > > > > > Driver 'sr' needs updating - please use bus_type methods > > > BUG: unable to handle kernel NULL pointer dereference at 00000000000005d8 > > > IP: [] get_page_from_freelist+0x43/0x573 > > > PGD 7e90f067 PUD 7edbc067 PMD 0 > > > Oops: 0000 [1] SMP > > > > Is this with CONFIG_SLAB or CONFIG_SLUB? > > > > I don't see it in my test systems, but they're CONFIG_SLAB > > OK, should have looked at the attachments: > > ... > CONFIG_SLAB=y > # CONFIG_SLUB is not set > # CONFIG_SLOB is not set > ... > > Since you also have this: > > CONFIG_DEBUG_KERNEL=y > > Can you tell me what source line corresponds to > > :sr_mod:sr_probe+0x17b/0x4a9 Ping on this, please. I suspect it will tell us the faulting call is kmalloc and that it's definitely a vm issue, but we need this data as a first step. James