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=-0.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 73156C432BE for ; Sun, 1 Aug 2021 03:37:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4D97B60F21 for ; Sun, 1 Aug 2021 03:37:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231769AbhHADhx (ORCPT ); Sat, 31 Jul 2021 23:37:53 -0400 Received: from mout.gmx.net ([212.227.17.20]:45415 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229761AbhHADhw (ORCPT ); Sat, 31 Jul 2021 23:37:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1627789018; bh=6XXJXx+B8VKjyQj6r5lwRQRASHQ19Vs67JH7oNnWrqs=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date:In-Reply-To:References; b=Zyde+j+l0uaPx1E4C/OYLAyPLjY7BE8965HpuPaF+1Pf/A6lYqM2J7Kyg57DfTDHc CTnfep6x6R4wZbgct31dhYHkS6gN0WNhhsDCkmg4EQba/OZcGMnM88Uy7201A9VXly hrZgKFjjoQD0wN5HJyejSDrOo3JtzqQnuqpRKAQQ= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from homer.fritz.box ([185.191.216.118]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1MHGCu-1mNFhS1w5Q-00DEjT; Sun, 01 Aug 2021 05:36:58 +0200 Message-ID: <6fce881efc3d8c24a5172528fe1f46ec2ddc0607.camel@gmx.de> Subject: Re: v5.14-rc3-rt1 losing wakeups? From: Mike Galbraith To: Thomas Gleixner , Sebastian Andrzej Siewior Cc: LKML , linux-rt-users@vger.kernel.org, Steven Rostedt , Peter Zijlstra Date: Sun, 01 Aug 2021 05:36:57 +0200 In-Reply-To: <87pmuzsf1p.ffs@tglx> References: <20210730110753.jvli6alm63h5lefy@linutronix.de> <2ae27233ab091d09a7d1e971a47144b40dd51fa0.camel@gmx.de> <87pmuzsf1p.ffs@tglx> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.40.3 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:pAhS6De1tBjzccsz8ujEyarxfwzTih35RCivZSjCr5Qv66InnU0 75xmt73ZIWRst18TIKvzf52L8ouhk5b5EFA1k8DMKEJBuU22jqzE3kLdpHi5ob0+1nSK+XH 31/n2H3K7sG57XHSWB+OpOPK8ycXOJTTv5kY5useV5Vt7CdP3QopdjTz9yx+sjCky0NOIbL bmSGhDDAslcW6vA+SNThA== X-UI-Out-Filterresults: notjunk:1;V03:K0:Ke2jBLI0zwI=:toeU2N4wRUsSAZYYN6dgeT 9q947aXCdTrUhlZLiOPkgC89o/Y0Upq1lwHYtGvsxEes/LxHgpVC8/kg20ghDGobOmZhO9UvD Fmg4U82M10gpqPQ4bgrxEd+4ILBeuD+8JJWNM5yTE3h2PrIUM7r/ztE6G1Cn4olggU4Igpgow xDUbUKb+yekMUM4YCWFS9WO9PBmX9GwycPsiDDHmb6w5xTZa2bAtd3RATwhAA+QO3KLiLBkJH hOWdnmtCH4lcnpb2TDTdwPQLSmrJmv6EuyywYUctBvasK9h1zlTVyx9SOjHU+zI5UM6y9zivf 8qsaDpsCrzX8U3tCaW4NDa9gq/7fZjLfVlKti/O8ysiwBCelsytSXxj0UoEUGhntRl/KhtHBd 71ZOceIqD1vVNwe3wTchR0E31Tz0o93jkNA6GkitH3hKd/3bZ3Gc6+WxhvmdsiO8xH+O5mhPz ZrO99qiigJTsRjnZyHMM4T/qVG8Rf+mxaPCPCBpS8SeH8GznKntUQ6M/ni5KgRfpLs8+9nA3P mwmthSb5Gtb0K5sBA8yT2D9zvAu8F7q8sPpzmEIXIuZUvvBv63m72AM3QoJ4TeNpTMBuuLflv wwJoEYNJW9WrJ4wk8aiNk9MKfaMGe9oRbvgVb6WJkP+4IPHPPWuT325qGeMNlosEXP9BCsdCZ zRRrrNApupGqxhMh4ABmMYA0u6YypJN0RWIO/j8xw7RlsEWpIdhdPDCCGCMYVw+P2HQSKfQ72 cvRVOhaqYD2TsvYOdnaB+YYV7BytWMCSGTRQ6waWhkqH3aBO/EfdAzRxdrbj4dZeqrZBKwQuf k3OVJvJrENqUxxHY4mT81r/0bAu/D5/jMW1lyYLURXdHUVpEWTgyThEiY1eSW/QYWdv6OVc3l mFR/q5iwINWjXSIZW3BbqUGP5vUxCWDndt8huu5DkDMpwLDW7lyQgQGG/OIO+8rdDg8aK3Eaf HxMyZLUtxIxQ2cD40/4RVNXUVUbdC/8K2pLV6wY8AHungalR7Vn4YeDM0FGcN9Bz86KOHuQmQ 1KWdGiZGri2Rh/qjGonzdDeGhnoxc1ch4QkrUlobTPgYCC6H3utnlNO1Imem7axyfgUJRVU4/ qWzV1t/Q33Y0ZGOB0McYyJuTMZweCSR6ePN Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2021-07-30 at 22:49 +0200, Thomas Gleixner wrote: > > > > First symptom is KDE/Plasma's task manager going comatose.=C2=A0 Notic= e soon > > KDE/Plasma points at the new fangled rtmutex based ww_mutex from > Peter. Seems not. When booting KVM box with nomodeset, there's exactly one early boot ww_mutex lock/unlock, ancient history at the failure point. -Mike