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[198.145.29.99]) by mx.google.com with ESMTPS id y36si2083532pgl.336.2019.05.15.08.37.40 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 15 May 2019 08:37:40 -0700 (PDT) Received-SPF: pass (google.com: domain of gregkh@linuxfoundation.org designates 198.145.29.99 as permitted sender) client-ip=198.145.29.99; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=esXearoJ; spf=pass (google.com: domain of gregkh@linuxfoundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=gregkh@linuxfoundation.org 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) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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