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=-2.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,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 658A7C433DB for ; Sun, 14 Mar 2021 11:18:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 387B764EB7 for ; Sun, 14 Mar 2021 11:18:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235229AbhCNLR1 (ORCPT ); Sun, 14 Mar 2021 07:17:27 -0400 Received: from mout.gmx.net ([212.227.15.19]:58295 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235115AbhCNLRC (ORCPT ); Sun, 14 Mar 2021 07:17:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1615720593; bh=SUPmWCtuh0yjnQfAJn8q88caDuLHyt/axn1UyiS6pDA=; h=X-UI-Sender-Class:Subject:To:References:From:Date:In-Reply-To; b=KDmWHZwmIvbh3rRHLhVq7a3zFfDFpogpRG1TkjKP0tpjC8xboQypPAkYSRggiF7A5 zc5i4ST99cTIZ93/vzybQ49lGVRs+HDwHEmsy8987G6c44plfZB/QVy9Il97qkIiXk 2hgM/7pzv9VdBM5MfwLDcTOElKPxpNd7WRK+4vtg= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.20.60] ([92.116.151.28]) by mail.gmx.net (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MYeQr-1lH9lL41pr-00VcyH; Sun, 14 Mar 2021 12:16:33 +0100 Subject: Re: Cycle offset is larger than allowed by the 'jiffies' clock's max_cycles value To: Rolf Eike Beer , linux-parisc References: <11708426.O9o76ZdvQC@eto.sf-tec.de> <2570738.mvXUDI8C0e@daneel.sf-tec.de> <69833c49-2eb4-5f6c-fdb6-a1e01d105a8c@gmx.de> <2573804.mvXUDI8C0e@daneel.sf-tec.de> From: Helge Deller Message-ID: Date: Sun, 14 Mar 2021 12:16:11 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: <2573804.mvXUDI8C0e@daneel.sf-tec.de> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:HSF2RMJNhkfz/qFSS7vv56XK1qc89BGsIL6JG9b1Z3Sdc6MEPXb t4mC+06pfKYuWDnCjKpWShHO7NMQOvQMe0sw0WtPNuvd9owumm+U5+RE4SuRsaXExSs86D4 sLr5XiRsCiEsEu2zg7DgYCwqyLk9cHy33CdVQrj9ZUij4D235+5bXI8uGvMXX2FOFhW0tRm ztvYNR1YytRf58F+WzAXA== X-UI-Out-Filterresults: notjunk:1;V03:K0:QWVoEcvBR0E=:AEk5kkkrvNjpCiqT4YqVeQ naaIQjAaAWvZGJ3xFXbdjOo5ZQJbQRpboOyXXVNC2BwkdYQ8tpKAyYnNk/f6xxNOD0TcI3kzp cAa7wvHvh+fhjxvzTBcqL4p4OJnywh2TRIucH7v/xQ7gLokORUbnXRzAnWxKlCQNGsaR9XIJN SOnsEFPoLezxdxTbq/NCd2WkLHNdiF8xIC1O+s5bn/MOa7Jp+7C4aQ14mF7DPf4PCbM5wqL9L s2oHk/b5uj/TiKfzmC46wGWnBX5uGzRLWTpciIT0hysMou4iu5JOfodLP7X9MSeADai1axUgq XWoy+U3qHqfXhQPRtmukvQkBMD9oTPRQfbHbe2PhgZk7VdIUZ54hWXRisMPzJbfqoKBwOJZuh xEuO2zsDSGQVQFPOD0y2sQhAMPMuxYYuFIoLrBHixf7GuAqyVwXhCyaf4dRyhDQn5b+DCG1kv 8gDrmIqTSbDPEXZ2cAWxRIGVHAo6RqHdUzg+3GwVYTKwL99/Ja/y0VSKaEdeZ4zj0AJEqCgaj wPoYa/1HakhQaiT/1jwhIr/96HfnAB7ETWWDqfxtGfHendoxRE3iHCJeXLgyyS5QV7Tfei6xq jujF2OozPPHc35mg8/aTA6x5vALSViH2/ynYUj10sJX/SxhROFBy8m/PuBQZ1k7A7vC+brab9 OWbiRyMiNciqDersSgkzRUI3OOl28GjctzGUu+YgW4GUc5yzhcPRwpJiJU2v3+ZaVFHqyR14T JWUcvQw554qpLUS+wBEdBhOBHf8lrGPdi6JiHW6vDQ6wSmxDWOCKiBME/zqaY46oxrrNjeANf SpPACFpmikjKE2ESbm9gk0eVpzsqMqIa6f+c/oNbJ6VMx905LxGhkUkyEwPCf5RpXS2cZOdvf iZuz19dzX6ac/2P2zF4A== Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On 3/14/21 10:47 AM, Rolf Eike Beer wrote: > Am Mittwoch, 3. M=E4rz 2021, 15:29:42 CET schrieb Helge Deller: >> On 3/1/21 7:44 PM, Rolf Eike Beer wrote: >>> Am Montag, 1. M=E4rz 2021, 17:49:42 CET schrieb Rolf Eike Beer: >>>> Am Montag, 1. M=E4rz 2021, 17:25:18 CET schrieb Rolf Eike Beer: >>>>> After upgrade to 5.11 get this multiple times per second on my C8000= : >>>>> >>>>> [ 36.998702] WARNING: timekeeping: Cycle offset (29) is larger tha= n >>>>> allowed by the 'jiffies' clock's max_cycles value (10): time overflo= w >>>>> danger [ 36.998705] timekeeping: Your kernel is sick, but >>>>> tries >>>>> to cope by capping time updates >> >> I know I have seen this at least once with a 32-bit kernel in qemu as >> well.... >>>> Not 5.11, but 5.10.11. 5.10.4 is fine. It could be a bad upgrade atte= mpt, >>>> I'll retry once I have built a proper 5.11 kernel. >>> >>> Ok, it's there also in 5.11.2: >> You don't see it in 5.11, but in 5.11.2. >> Sadly none of the changes between those versions seem related >> to this problem. >> >> Do you still see this? >> I'd like to get it anaylzed/fixed. > > Me too. What do you need? I actually don't know. First of all it would be great if we could reproduce it. Right now I don't see this issue any longer, so I have nowhere to start fr= om. Helge