From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE5CDC04E53 for ; Wed, 15 May 2019 15:37:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90E2820873 for ; Wed, 15 May 2019 15:37:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557934662; bh=lIwfUgZLsOETAqKmdIH6ivluhJ74dnvjF64W3zo7G3U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=G5T358YWyn8WoIJpnicH0UF6bbhQ/u5jM0Lq8Iq0pwFVnu622cii/JeM6dqydOuhU x4F1cqKerwHlSzO8MekS7C1Uc22Q1fW+DAtIvB+PXSYEkm7+9dEno00niiNQvHG0Za NmCVTg8ynI3znD1aNLIsfD5ryajprjskGpVf5Dlc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727971AbfEOPhl (ORCPT ); Wed, 15 May 2019 11:37:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:40910 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726335AbfEOPhl (ORCPT ); Wed, 15 May 2019 11:37:41 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2F41A20818; Wed, 15 May 2019 15:37:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557934660; bh=lIwfUgZLsOETAqKmdIH6ivluhJ74dnvjF64W3zo7G3U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=esXearoJXyErGlUIXkOrnIwNQRHkRzCAqnhw7vp9RJR39xntePk7hOYLZEhbxtgA4 AaJRauP72JOUeasJHE7Wimfzcs5d/cquM0J5pC1xnS4aRGQ0Bcs/uw8xgNuQvJXYTk Ip/EGnYVhJ/lQ34norEhZKVj9l199Bg7B6z4b690= Date: Wed, 15 May 2019 17:37:38 +0200 From: Greg Kroah-Hartman To: Matthew Wilcox Cc: Lech Perczak , Al Viro , Eric Dumazet , "linux-kernel@vger.kernel.org" , Piotr Figiel , Krzysztof =?utf-8?Q?Drobi=C5=84ski?= , Pawel Lenkow , "linux-mm@kvack.org" Subject: Re: Recurring warning in page_copy_sane (inside copy_page_to_iter) when running stress tests involving drop_caches Message-ID: <20190515153738.GA27219@kroah.com> References: <14c9e6f4-3fb8-ca22-91cc-6970f1d52265@camlintechnologies.com> <011a16e4-6aff-104c-a19b-d2bd11caba99@camlintechnologies.com> <20190515144352.GC31704@bombadil.infradead.org> <20190515150406.GA22540@kroah.com> <20190515152035.GE31704@bombadil.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190515152035.GE31704@bombadil.infradead.org> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 15, 2019 at 08:20:35AM -0700, Matthew Wilcox wrote: > On Wed, May 15, 2019 at 05:04:06PM +0200, Greg Kroah-Hartman wrote: > > > Greg, can you consider 6daef95b8c914866a46247232a048447fff97279 for > > > backporting to stable? Nobody realised it was a bugfix at the time it > > > went in. I suspect there aren't too many of us running HIGHMEM kernels > > > any more. > > > > > > > Sure, what kernel version(s) should this go to? 4.19 and newer? > > Looks like the problem was introduced with commit > a90bcb86ae700c12432446c4aa1819e7b8e172ec so 4.14 and newer, I think. Ok, I'll look into it after this round of stable kernels are released, thanks. greg k-h