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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, 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 C7A22C46464 for ; Fri, 10 Aug 2018 14:06:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 86D4D223FF for ; Fri, 10 Aug 2018 14:06:38 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 86D4D223FF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com 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 S1727341AbeHJQgj (ORCPT ); Fri, 10 Aug 2018 12:36:39 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:50418 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727209AbeHJQgj (ORCPT ); Fri, 10 Aug 2018 12:36:39 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1FB9040216F5; Fri, 10 Aug 2018 14:06:36 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.34.27.30]) by smtp.corp.redhat.com (Postfix) with SMTP id DD41D10FFE7D; Fri, 10 Aug 2018 14:06:34 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Fri, 10 Aug 2018 16:06:35 +0200 (CEST) Date: Fri, 10 Aug 2018 16:06:34 +0200 From: Oleg Nesterov To: Steven Rostedt Cc: LKML , Masami Hiramatsu , Namhyung Kim , Andrew Morton , stable Subject: Re: [PATCH] uprobes: Use synchronize_rcu() not synchronize_sched() Message-ID: <20180810140633.GD3677@redhat.com> References: <20180809160553.469e1e32@gandalf.local.home> <20180810113548.GA3677@redhat.com> <20180810084832.70b9a62a@gandalf.local.home> <20180810133608.GC3677@redhat.com> <20180810094412.79d7b181@gandalf.local.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180810094412.79d7b181@gandalf.local.home> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Fri, 10 Aug 2018 14:06:36 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.5]); Fri, 10 Aug 2018 14:06:36 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'oleg@redhat.com' RCPT:'' Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/10, Steven Rostedt wrote: > > Are you OK with this patch? I set it for stable and plan on pushing it > with the patches for the upcoming merge window. If you are OK, mind > giving me an Acked or Reviewed-by? Yes, thanks, feel free to add Acked-by: Oleg Nesterov > Even if it is theoretical, we should make sure it can't happen. But > this is unrelated to the current patch, agreed. > and if we should fix this, then > it can be a separate patch. I don't think your change hurts, and even > if it can't technically happen, it may let us sleep better at night. > Want to send a formal patch to make this change? OK, will do. Oleg.