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 1A64BC433F5 for ; Sun, 23 Jan 2022 14:37:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233538AbiAWOhj (ORCPT ); Sun, 23 Jan 2022 09:37:39 -0500 Received: from mout.gmx.net ([212.227.17.20]:33057 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233480AbiAWOhj (ORCPT ); Sun, 23 Jan 2022 09:37:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1642948628; bh=2pu656PLv9lr12C0IZIyVBUVDcD2WNDmV/Q0cQCkIVk=; h=X-UI-Sender-Class:Date:Subject:To:References:From:In-Reply-To; b=KPItin1YSNXPStovnICnN2dajheMJUICL4Gtoa+j0fDyHbjL9WR+LBl1VzpJuKPW7 FpDTJNhhoMRDyOmKvSX5sy/lmHvcjZ+VaxobA0BuMc7JH/iRL44iUqkheJKDIKHZZl d4/mdAviI6CU8+QOU8uLO3o/eDLz0AEaFY749bmI= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.20.60] ([92.116.169.228]) by mail.gmx.net (mrgmx105 [212.227.17.168]) with ESMTPSA (Nemesis) id 1N6bjy-1mDkRm0Q6Y-01867t; Sun, 23 Jan 2022 15:37:08 +0100 Message-ID: <9063d674-4c9a-bf15-95e2-5400d0dfa704@gmx.de> Date: Sun, 23 Jan 2022 15:36:00 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.3.0 Subject: Re: pagefaults and hang with 5.15.11 Content-Language: en-US To: John David Anglin , Rolf Eike Beer , linux-parisc@vger.kernel.org References: <11891682.O9o76ZdvQC@daneel.sf-tec.de> <4372681.LvFx2qVVIh@eto.sf-tec.de> <9f531648-c222-f203-8bf0-04f7199c115c@bell.net> From: Helge Deller In-Reply-To: <9f531648-c222-f203-8bf0-04f7199c115c@bell.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:H6LRO3UH8n4oMTp0gKUeMlXBRIGUvQavLGVpmBwP4wCz2CnXuhw bVeMqVhlQyk5grV6H1exCH+Fk/A+JnoCu/h/4A6IBnbHo6bZycwCDxJRhXfl6d9eCBF/w+6 TfO+VBTSoG5p+QvWTVUXu3NgVLEl/kYKarV8jeLV1KT0HYot9zI9rVc44RNOM9htN1OFhil YD13NGIgr+8dyMjv5ZtlA== X-UI-Out-Filterresults: notjunk:1;V03:K0:d22zyvDsvho=:ZEvmxb2fyD2Wqe6MCy7KNE ejen/kjUaSUIQAA8qpGn/EBhayvPQKkytu8rPM0m5wf8ncWLAU1EsNVmUSIVj3eFdXlq2E3WO 1azeygoH1z66YEVLMeHSDYygTIwXlUYmACKCwS1LhHf1i1er2KbeMHfJREYHAS8NgiE8OEEhU xoq7gpWC2K9ODAd60Ij5JDRMZk4dty+dcZ63sWI17eDReVpZ3ZHG+DSZ8ksrvwM3+O95q+Jas JFr2cqmZQZ3Tp4s7rZKEH1y66Q9OSU9D3S1pFN70G3NefR5L5opZI4Ps67r2vHwbWyQ9qKjQh ln9lLayyfup/1QsgKNnwpB8hp1gP0WEh+UKLsEB0Qbws9S2wrSXp8tnvE7MsFSHWBXBShPbeo HuxEg7Bd6h/uSwBVOY+wWOqqQxfhu9f5Ez4SXkDqlKayi13cuHejA1Zg5dnJfasqfLbZmpaCY wLP2znD+g8tStdRR+V8VJHtMDZP6Cdux2d46C1pHy1bj308QJHSqqZ1J2aP0+PsBepl/wnioD OcTM+qGk0KEdY0YPCMJs9YJwoW+5D+maziChHJj92CR7MqCegZjQoIkLzad4rEMGeVSdB51xN +mzJEPy6c5mpeFKJR2eHRIACngSarOp2qVmUoijAkMDAfmEFGeFLQDUOvD7r/2XXXibidiSPu Ep3Xy/GatBNHdU8D0qa/BhgmV3bQbhT4vkioa8vevcN3NYfpPO7JjuYLBK7kzaSDS7BF/5of8 WxspY1wDFkqQS4yPkIZSo0xF9gzCNaFKXcGVCY3o/PXdOZx7JKfWhkSThAsBZ7xSBMaNxaSoa xAN7rSeEX42FZN1zGZrNrbW7oPSG0J3NuKZisq+zMacfogBTqvDSlqPIM8siUcRBrg0RKK7ul q3ACN1gTS45h7EvpM/pEpWkMxuUB68uwy1ASqXZyMTTCbN2dXuJCnpGWsm4ufuSsiQQeCmm0r K7DWvstG41Y4MadV92ysXSd8CSV9DeYgwF4LSG2JkLP3kAnzJoV3BSa5dD2nfz0mHw9VSyIQS 7fLhfNT5TaF7po+p/eSiHbiiBnQMjwQz34uf89SXhjNBZJgbS5flXbEOkv18rC0wwpn0neRCF ybJBxKQmXFBe6k= Precedence: bulk List-ID: X-Mailing-List: linux-parisc@vger.kernel.org On 1/23/22 14:51, John David Anglin wrote: > On 2022-01-23 6:53 a.m., Rolf Eike Beer wrote: >> Am Sonntag, 26. Dezember 2021, 18:22:12 CET schrieb John David Anglin: >>> On 2021-12-26 11:21 a.m., Rolf Eike Beer wrote: >>>> [139181.966881] WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 >>>> rcu_eqs_enter.constprop.0+0x8c/0x98 >>> This is probably not reproducible. You might try this change from Sven >>> I haven't found 5.15.11 to be stable. >> When I was running 5.15.0 I had uptimes of 21 and 29 days before crashe= s, and >> then 5 days before I rebooted into 5.15.11 to test that. >> >> With 5.15.11 my longest uptime was 5 days. >> >> I have switched to 5.15.4 afterwards, which is now already up for 2 wee= ks. I >> see regular userspace crashes with that, usually gcc or ld as the machi= ne is >> mainly building things, which seems to happen way more often than it ha= s >> happened with 5.15.0 for me. > The problem is how to find the changes responsible for this instability?= =C2=A0 I'm sure they aren't > caused by parisc specific changes.=C2=A0 It would take a very long time = to bisect and test, and it would > be very easy to make a mistake bisecting because the issues are close to= random. > > So the best we can do is to analyze specific problems and try to fix the= m. I also faced problems with 5.15. So I switched all hppa debian buildd servers to 5.10.90 and they are runni= ng stable since 14 days now. I think 5.15 isn't used widely yet, so there are probably still many non-p= arisc related issues in it. Helge