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 A4DD3C43381 for ; Mon, 1 Apr 2019 06:42:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7C626213A2 for ; Mon, 1 Apr 2019 06:42:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731864AbfDAGmO (ORCPT ); Mon, 1 Apr 2019 02:42:14 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:39022 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725911AbfDAGmN (ORCPT ); Mon, 1 Apr 2019 02:42:13 -0400 Received: by mail-wm1-f68.google.com with SMTP id n25so9850295wmk.4 for ; Sun, 31 Mar 2019 23:42:12 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=R2dwsEXJpe+ePQvKT4N+lP1t3+ZzfzBs9BAuUJxE/t4=; b=d0EiO/hce2iOnlRZWnhum4Lg17OIl33oK1M7A3J9UZjZsVlOsE18vCM8y2AgSlUJe/ SYNuR//DqR2ITvKK65eOXZc7HJ3ZJikJIUC7Z2KyIEMU8qv3ID2dO5/1esJKm67gg6kE AMtKtmdvMeYafYLN9rdIub5xV7STGztkM5nbguLG7maSve+fPgQiY36XJTU+Oq7nvM37 IPoA45upasRhcwu6I+kMLCxjZh2OaT/srg71TB6VTOYkJccvISyM6p5LaEi6ETL+tEAK sTwl204mxhUcNQF3zWbDayZK+8cBYUY8Lc9ptKvdoHJy/9vCjFN5Uz/cW09luoSw1vKP gUqg== X-Gm-Message-State: APjAAAXbqktrL90ap+WDB60oItxNJXAA2fB/nNsE7Qv5/TyW+M28kV8p 95PzF3Wv0eHauklvcwGi/XraDA== X-Google-Smtp-Source: APXvYqwmQ7JS3qfRxQ4UZSyjWyfNBLkswP0YF1vBIHdNIFCORYIDqhTFznsabIodpJW3LyCYwTbGQg== X-Received: by 2002:a7b:cb04:: with SMTP id u4mr11389348wmj.0.1554100931823; Sun, 31 Mar 2019 23:42:11 -0700 (PDT) Received: from localhost.localdomain ([151.29.174.33]) by smtp.gmail.com with ESMTPSA id q16sm7777411wmc.39.2019.03.31.23.42.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 31 Mar 2019 23:42:11 -0700 (PDT) Date: Mon, 1 Apr 2019 08:42:08 +0200 From: Juri Lelli To: Borislav Petkov Cc: Tetsuo Handa , Thomas Gleixner , syzbot , syzkaller-bugs@googlegroups.com, "H. Peter Anvin" , LKML , Andy Lutomirski , mingo@redhat.com, x86@kernel.org, Peter Zijlstra Subject: Re: INFO: rcu detected stall in corrupted (3) Message-ID: <20190401064208.GH29508@localhost.localdomain> References: <000000000000b08190058543449f@google.com> <8ecb5bc9-5761-64d0-64b2-1310300a64ec@I-love.SAKURA.ne.jp> <20190330104529.GB5935@zn.tnic> <77650d72-e2ec-e084-c929-210b16b8afb9@i-love.sakura.ne.jp> <20190330110933.GC5935@zn.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190330110933.GC5935@zn.tnic> 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 Hi, On 30/03/19 12:09, Borislav Petkov wrote: > On Sat, Mar 30, 2019 at 07:57:50PM +0900, Tetsuo Handa wrote: > > Yes. But what such threshold be? 0.1 second? 1 second? 10 seconds? > > Can we find a threshold where everyone can agree on? > > This is what we do all day on lkml: discussing changes so that (almost) > everyone is happy with them. Looks like this is the same problem we discussed a while ago [1], but couldn't reach an agreement on what's best to do about it. I'll need to go back and refresh memory. Thanks, - Juri 1 - https://lore.kernel.org/lkml/000000000000a4ee200578172fde@google.com/