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 B99C8C433FE for ; Fri, 30 Sep 2022 16:28:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232160AbiI3Q22 (ORCPT ); Fri, 30 Sep 2022 12:28:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231224AbiI3Q2X (ORCPT ); Fri, 30 Sep 2022 12:28:23 -0400 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4940915FC73 for ; Fri, 30 Sep 2022 09:28:22 -0700 (PDT) Received: from zn.tnic (p200300ea9733e70a329c23fffea6a903.dip0.t-ipconnect.de [IPv6:2003:ea:9733:e70a:329c:23ff:fea6:a903]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 87ABE1EC0657; Fri, 30 Sep 2022 18:28:16 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1664555296; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=BQlYaQrYeBSXEC+SFeCNA5Xu5O65plOEiXrylzf6jf0=; b=oz7Dr0YPEMkyzvrxjfaKypelTYTcWzo7FaRtnvn1oWvN52BcoXf9hfLAgowOzpswStTzCn PJj9Y3TrSNPBNCMVaeRr7DO/gWpKszswZtJo/161oGE0L558XAJk0ExA8zEpGFCT2w685j QDB8Lms18SXby6IYeaTln7H4FoRss/4= Date: Fri, 30 Sep 2022 18:28:12 +0200 From: Borislav Petkov To: "Paul E. McKenney" Cc: Peter Zijlstra , x86-ml , lkml Subject: Re: INFO: task rcu_gp:3 blocked for more than 122 seconds. Message-ID: References: <20220929153722.GG4196@paulmck-ThinkPad-P17-Gen-1> <20220930161129.GH4196@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20220930161129.GH4196@paulmck-ThinkPad-P17-Gen-1> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 30, 2022 at 09:11:29AM -0700, Paul E. McKenney wrote: > That can be annoying! I well recall one bisection session where each step > took several hours, and where each step required manual intervention, > and where the bug was urgent. I got the bisection overnight, but was > pretty useless then next day. ;-) Yikes, I hate those moments. > It is possible that Peter would want proof of this. ;-) Yeah, figured it out while we were talking about it on IRC: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?h=sched/core&id=fdf756f7127185eeffe00e918e66dfee797f3625 Ok, one down, gazillion more to go. :-) -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette