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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 6180FC432BE for ; Thu, 2 Sep 2021 11:06:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3AB3A6054E for ; Thu, 2 Sep 2021 11:06:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242421AbhIBLHW (ORCPT ); Thu, 2 Sep 2021 07:07:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230256AbhIBLHR (ORCPT ); Thu, 2 Sep 2021 07:07:17 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C6703C061575 for ; Thu, 2 Sep 2021 04:06:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=Z73x2L2rOoDwRYkagwjL/Oyo2Vlc7NsRgYgsKEc/tB0=; b=mP6/AXJfjGwoPVKWYucX3Lxbj5 n5BKtbgjARzVRDFN8GMkTEhqQJd52WYOHXCDsscuWFO8m7O9143u9rSJ6C5YfvKbRzpY1qFoQJ2XA RhXxbYNtvaU9FyN3DtjY36yEDdvKugurh7fCSeX4kdujnsXqGqZdnA4xpEYKT1WaUTgH6tMhUBYyG 9nP+yTvDP+i0fOC84Ai0tJhVr0pSaotaemv+aN1j81emkTUWJMSihEMuu8qiYWevNFA5TzKa9yv0B fMuMIZWCFaDjcEPIufN1fjVRCNNhV+eb42FFN0gL22k/qTFaatWQCscH3+bfboNO3flCpUrCXNPO6 cizt5Atg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLkXr-0006dL-Ot; Thu, 02 Sep 2021 11:06:14 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 7C65030029F; Thu, 2 Sep 2021 13:06:13 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 65C162BC01581; Thu, 2 Sep 2021 13:06:13 +0200 (CEST) Date: Thu, 2 Sep 2021 13:06:13 +0200 From: Peter Zijlstra To: Thomas Gleixner Cc: LKML , Ingo Molnar , Davidlohr Bueso , Darren Hart , Sebastian Andrzej Siewior Subject: Re: [patch 0/3] futex: Prevent inconsistent state and exit race Message-ID: References: <20210902093755.087908334@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210902093755.087908334@linutronix.de> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Sep 02, 2021 at 11:48:47AM +0200, Thomas Gleixner wrote: > The recent requeue PI changes introduced a condition where a waiter can > escape to user space with inconsistent state and in the worst case exit > before state has been made correct. > > The following series addresses this. > Acked-by: Peter Zijlstra (Intel)