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=-2.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 972FEC04EB8 for ; Mon, 10 Dec 2018 23:01:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5078A2086D for ; Mon, 10 Dec 2018 23:01:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544482906; bh=9kqY+F/oQkLwQllZIemzQu7Xm+h3PIfAzRLVDKU+FqI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=a8hA4SPSYnCHwr3Zb4GGB5HIRbp9GuC8STivPBzvNg7dDPHz1Lqgks6SYLQUuGhIu crOXIl0Fl5sMD3Lkq32UZgPoI9BEiT6DU9OYMF1Xjl7j00PRDzoFxjqa8nBeHq6a83 SH05Y4PaBZ/t9XFGXNO2wYBffT+IyrbgSTl0ZbTA= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5078A2086D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729858AbeLJXBp (ORCPT ); Mon, 10 Dec 2018 18:01:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:44130 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729467AbeLJXBo (ORCPT ); Mon, 10 Dec 2018 18:01:44 -0500 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 1338820821; Mon, 10 Dec 2018 23:01:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544482904; bh=9kqY+F/oQkLwQllZIemzQu7Xm+h3PIfAzRLVDKU+FqI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=L3x7RC9lEHSVIbjb9UCpJ7s+zRLxHKjJF3O/IykurORgpg3AlQ5NSCeYcyDDwbjfd wzgmksRLxrNYi8Mx5Xb70SDH4Byxle9rSt35w6uUyMvWjT21nzro77llK7pLt+dKSd b7dSHnAQkPyv6gQPhVRsasJ7wCEp/IpF6eTPm9t0= Date: Mon, 10 Dec 2018 18:01:42 -0500 From: Sasha Levin To: Thomas Gleixner Cc: LKML , stable@vger.kernel.org Subject: Re: [patch] futex: Cure exit race Message-ID: <20181210230142.GG97256@sasha-vm> References: <20181210152311.986181245@linutronix.de> <20181210210920.75EBD20672@mail.kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 10, 2018 at 10:16:03PM +0100, Thomas Gleixner wrote: >On Mon, 10 Dec 2018, Sasha Levin wrote: >> This commit has been processed because it contains a -stable tag. >> The stable tag indicates that it's relevant for the following trees: all >> >> The bot has tested the following trees: v4.19.8, v4.14.87, v4.9.144, v4.4.166, v3.18.128, >> >> v4.19.8: Build OK! >> v4.14.87: Build OK! >> v4.9.144: Build failed! Errors: >> kernel/futex.c:1186:28: error: ???uaddr??? undeclared (first use in this function) >> >> v4.4.166: Build failed! Errors: >> kernel/futex.c:1181:28: error: ???uaddr??? undeclared (first use in this function) >> >> v3.18.128: Build failed! Errors: >> kernel/futex.c:1103:28: error: ???uaddr??? undeclared (first use in this function) >> >> How should we proceed with this patch? > >I'll look into that once this is sorted... I so love these rotten kernels. It seems we need: 734009e96d19 ("futex: Change locking rules") Which isn't trivial to backport. -- Thanks, Sasha