From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: [Bug 13311] New: mptsas: ioc0: removing ssp device, kernel oops Date: Thu, 28 May 2009 01:00:38 -0700 Message-ID: <20090528010038.b4d3b2b9.akpm@linux-foundation.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:51672 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759039AbZE1IBI (ORCPT ); Thu, 28 May 2009 04:01:08 -0400 In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: mike.tummy@gmail.com Cc: linux-scsi@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, Kay Sievers , Greg KH (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Thu, 14 May 2009 18:17:10 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13311 > > Summary: mptsas: ioc0: removing ssp device, kernel oops I'd have thought that the severity of this problem is not matched by the response. > Product: SCSI Drivers > Version: 2.5 > Kernel Version: 2.6.27.21 Is it reproducible? If so, is there any change that it can be retested under a 2.6.29-based kernel? Thanks. > May 12 05:20:20 tile01-primary kernel: RIP: 0010:[] [] sysfs_find_dirent+0x9/0x2f OK, I assume that the scsi driver did something bad to sysfs and that sysfs then fell on its face. Really, given the frequency and imaginativeness with which drivers abuse sysfs, the driver-core should be more robust. Kay, would you have time to plunk through this and see if we can strengthen the sysfs code a bit so it doesn't crash? But the core bug is presumably in the mptsas driver. Perhaps you can also see if you can work out what it did wrong? Thanks.