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_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 EE516C06511 for ; Tue, 2 Jul 2019 08:35:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CDD0520836 for ; Tue, 2 Jul 2019 08:35:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727066AbfGBIft convert rfc822-to-8bit (ORCPT ); Tue, 2 Jul 2019 04:35:49 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:44033 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725991AbfGBIft (ORCPT ); Tue, 2 Jul 2019 04:35:49 -0400 Received: from bigeasy by Galois.linutronix.de with local (Exim 4.80) (envelope-from ) id 1hiEGG-0002yj-OP; Tue, 02 Jul 2019 10:35:36 +0200 Date: Tue, 2 Jul 2019 10:35:36 +0200 From: Sebastian Andrzej Siewior To: Kurt Kanzenbach Cc: Steven Rostedt , Corey Minyard , Corey Minyard , linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org, Peter Zijlstra , tglx@linutronix.de Subject: Re: [PATCH RT v2] Fix a lockup in wait_for_completion() and friends Message-ID: <20190702083536.vt346ysqmq6q23iz@linutronix.de> References: <20190509193320.21105-1-minyard@acm.org> <20190510103318.6cieoifz27eph4n5@linutronix.de> <20190628214903.6f92a9ea@oasis.local.home> <20190701190949.GB4336@minyard.net> <20190701161840.1a53c9e4@gandalf.local.home> <20190701204325.GD5041@minyard.net> <20190701170602.2fdb35c2@gandalf.local.home> <20190701171333.37cc0567@gandalf.local.home> <20190701172825.7d861e85@gandalf.local.home> <20190702070418.h6ynkkgk6v6s3aii@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8BIT In-Reply-To: <20190702070418.h6ynkkgk6v6s3aii@linutronix.de> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019-07-02 09:04:18 [+0200], Kurt Kanzenbach wrote: > > In fact, my system doesn't boot with this commit in 5.0-rt. > > > > If I revert 90e1b18eba2ae4a729 ("swait: Delete the task from after a > > wakeup occured") the machine boots again. > > > > Sebastian, I think that's a bad commit, please revert it. > > I'm having the same problem on a Cyclone V based ARM board. Reverting > this commit solves the boot issue for me as well. Okay. So the original Corey fix as in v5.0.14-rt9 works for everyone. Peter's version as I picked it up for v5.0.21-rt14 is causing problems for two persons now. I'm leaning towards reverting it back to old version for now… > Thanks, > Kurt Sebastian