Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755676Ab2B2UiJ (ORCPT ); Wed, 29 Feb 2012 15:38:09 -0500 Received: from e7.ny.us.ibm.com ([32.97.182.137]:49630 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755592Ab2B2UiG (ORCPT ); Wed, 29 Feb 2012 15:38:06 -0500 Message-ID: <4F4E8C46.3040005@linux.vnet.ibm.com> Date: Wed, 29 Feb 2012 12:36:22 -0800 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.27) Gecko/20120216 Lightning/1.0b2 Thunderbird/3.1.19 MIME-Version: 1.0 To: Andrew Morton CC: Christoph Lameter , "Eric W. Biederman" , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC][PATCH] fix move/migrate_pages() race on task struct References: <20120223180740.C4EC4156@kernel> <4F468F09.5050200@linux.vnet.ibm.com> <4F469BC7.50705@linux.vnet.ibm.com> <4F47BF56.6010602@linux.vnet.ibm.com> <4F47C800.4090903@linux.vnet.ibm.com> <87sjhzun47.fsf@xmission.com> <87d390janv.fsf@xmission.com> <20120229123120.127e21fd.akpm@linux-foundation.org> In-Reply-To: <20120229123120.127e21fd.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Content-Scanned: Fidelis XPS MAILER x-cbid: 12022920-5806-0000-0000-000013082254 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 525 Lines: 15 On 02/29/2012 12:31 PM, Andrew Morton wrote: > What was the user-visible impact of the bug? It'll probably oops dereferencing task->cred: https://lkml.org/lkml/2012/2/23/302 Although I was never actually able to get it to trigger without some code to enlarge the race window. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/