From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ie0-f182.google.com (mail-ie0-f182.google.com [209.85.223.182]) by kanga.kvack.org (Postfix) with ESMTP id 0EBA26B011D for ; Tue, 11 Nov 2014 17:23:48 -0500 (EST) Received: by mail-ie0-f182.google.com with SMTP id rd18so12566467iec.13 for ; Tue, 11 Nov 2014 14:23:47 -0800 (PST) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org. [140.211.169.12]) by mx.google.com with ESMTPS id r40si33443865ioi.59.2014.11.11.14.23.46 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 11 Nov 2014 14:23:46 -0800 (PST) Date: Tue, 11 Nov 2014 14:23:44 -0800 From: Andrew Morton Subject: Re: [PATCH 1/2] mm: page_isolation: check pfn validity before access Message-Id: <20141111142344.b4eb11c6e3c240d345fdd995@linux-foundation.org> In-Reply-To: <000001cff998$ee0b31d0$ca219570$%yang@samsung.com> References: <000001cff998$ee0b31d0$ca219570$%yang@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Weijie Yang Cc: kamezawa.hiroyu@jp.fujitsu.com, 'Minchan Kim' , mgorman@suse.de, mina86@mina86.com, 'linux-kernel' , 'Linux-MM' , 'Weijie Yang' On Thu, 06 Nov 2014 16:08:02 +0800 Weijie Yang wrote: > In the undo path of start_isolate_page_range(), we need to check > the pfn validity before access its page, or it will trigger an > addressing exception if there is hole in the zone. > There is not enough information in the chagnelog for me to decide how to handle the patch. 3.19? 3.18? 3.18+stable? When fixing bugs, please remember to fully explain the end-user impact of the bug. Under what circumstances does it occur? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org