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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6EBEC43217 for ; Tue, 12 Apr 2022 12:41:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354412AbiDLMm4 (ORCPT ); Tue, 12 Apr 2022 08:42:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46480 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355260AbiDLMjF (ORCPT ); Tue, 12 Apr 2022 08:39:05 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0CDD462A0A for ; Tue, 12 Apr 2022 04:59:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; 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=++CuEWmMFr3JtalWqa+Q+0MtLvDBWWOfSiXyxOg+sfQ=; b=TLrlss4IK1zvwsvPnnO4QFfO+b uEx/FCQ6acqIPpWkdk0xR7EyZUBOLJ3NP47L0i+VaJWIcHgu4QC9SS2oo8wd0rFVCnIikMYM942mP w9HBffir9f1dVb6ufswELWsQmQHEyJ/rdZ+iz5N/x96voji6iDhpzPpkPednuilVT/QizIyDC4m3e lmT9B91bQAz0jWYiggebGhgQMl65v2/cq+xJJB4o3T3QGMxYXxOrS0++ZQL4cA/wEbR50aayPSfy9 edJ05lTPPRG02m2Ci99ZUTfshEEFtRbOR9CqGxf396YNnb+r4rtRkFmLD02A1J8IkllcCIR7Fd5ap xf9QLxMA==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1neFBP-00DImD-7p; Tue, 12 Apr 2022 11:59:43 +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 (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id C82D6300250; Tue, 12 Apr 2022 13:59:42 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id A63C926670FA9; Tue, 12 Apr 2022 13:59:42 +0200 (CEST) Date: Tue, 12 Apr 2022 13:59:42 +0200 From: Peter Zijlstra To: "Eric W. Biederman" Cc: Oleg Nesterov , Sebastian Andrzej Siewior , linux-kernel@vger.kernel.org, Ben Segall , Daniel Bristot de Oliveira , Dietmar Eggemann , Ingo Molnar , Juri Lelli , Mel Gorman , Steven Rostedt , Thomas Gleixner , Vincent Guittot Subject: Re: [PATCH v2] ptrace: fix ptrace vs tasklist_lock race on PREEMPT_RT. Message-ID: References: <20220405102849.GA2708@redhat.com> <20220407121340.GA2762@worktop.programming.kicks-ass.net> <87v8vk8q4g.fsf@email.froward.int.ebiederm.org> <20220408090908.GO2731@worktop.programming.kicks-ass.net> <874k332wjp.fsf@email.froward.int.ebiederm.org> <87ee23zqdj.fsf@email.froward.int.ebiederm.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For all who I forgot on the Cc list.. continued here: https://lkml.kernel.org/r/20220412114421.691372568@infradead.org (once it shows up, the web seems congested just now)