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=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 C7E70C432C3 for ; Sun, 1 Dec 2019 16:55:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7D5C12082E for ; Sun, 1 Dec 2019 16:55:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="VOSNefNJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7D5C12082E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id E27B66B0003; Sun, 1 Dec 2019 11:55:13 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id DD87C6B0005; Sun, 1 Dec 2019 11:55:13 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id CC8B76B0006; Sun, 1 Dec 2019 11:55:13 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0103.hostedemail.com [216.40.44.103]) by kanga.kvack.org (Postfix) with ESMTP id B2E356B0003 for ; Sun, 1 Dec 2019 11:55:13 -0500 (EST) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with SMTP id 50246180AD81F for ; Sun, 1 Dec 2019 16:55:13 +0000 (UTC) X-FDA: 76217172906.22.beam33_2d8d36d07ce47 X-HE-Tag: beam33_2d8d36d07ce47 X-Filterd-Recvd-Size: 1979 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf30.hostedemail.com (Postfix) with ESMTP for ; Sun, 1 Dec 2019 16:55:12 +0000 (UTC) Received: from localhost (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (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 AFDBC2073C; Sun, 1 Dec 2019 16:55:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575219312; bh=r3b+bnDqexbrCOViiqxKfOKwp1GKepGzbJ9KHNlPw4U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=VOSNefNJesjN26J3buOjenJJjVEqFqwfrrYXt8ah4cxgf9azFX8tS9M+Y0zPpw5kw 8FahXDfVwMSexMpucFrVvrrIWkS/fw+S7ej4pl7YUwD4boqmcEN3p2vAj5Z1D4c8pD /w4cpbO653OwTigF8fNhuDjUL9QNvEiSBgkEX8UE= Date: Sun, 1 Dec 2019 11:55:10 -0500 From: Sasha Levin To: Vlastimil Babka Cc: stable@vger.kernel.org, Ben Hutchings , Matthew Wilcox , Ajay Kaher , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH STABLE ONLY] add missing page refcount overflow checks Message-ID: <20191201165510.GT5861@sasha-vm> References: <20191129090351.3507-1-vbabka@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20191129090351.3507-1-vbabka@suse.cz> User-Agent: Mutt/1.10.1 (2018-07-13) 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 Fri, Nov 29, 2019 at 10:03:48AM +0100, Vlastimil Babka wrote: >This collection of patches add the missing overflow checks in arch-specific >gup.c variants for x86 and s390. Those were missed in backport of 8fde12ca79af >("mm: prevent get_user_pages() from overflowing page refcount") as mainline >had a single gup.c implementation at that point. See individual patches for >details. Queued up, thanks! -- Thanks, Sasha