Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752208AbaKKWXr (ORCPT ); Tue, 11 Nov 2014 17:23:47 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:56683 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751736AbaKKWXq (ORCPT ); Tue, 11 Nov 2014 17:23:46 -0500 Date: Tue, 11 Nov 2014 14:23:44 -0800 From: Andrew Morton To: Weijie Yang Cc: kamezawa.hiroyu@jp.fujitsu.com, "'Minchan Kim'" , mgorman@suse.de, mina86@mina86.com, "'linux-kernel'" , "'Linux-MM'" , "'Weijie Yang'" 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> X-Mailer: Sylpheed 3.4.0beta7 (GTK+ 2.24.23; x86_64-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 List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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/