From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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 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: Sender: stable-owner@vger.kernel.org List-ID: 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