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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 B8136C433DB for ; Thu, 18 Feb 2021 19:01:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7627A64EAE for ; Thu, 18 Feb 2021 19:01:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231703AbhBRTBj (ORCPT ); Thu, 18 Feb 2021 14:01:39 -0500 Received: from mail-02.mail-europe.com ([51.89.119.103]:34162 "EHLO mail-02.mail-europe.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232190AbhBRRW0 (ORCPT ); Thu, 18 Feb 2021 12:22:26 -0500 Date: Thu, 18 Feb 2021 17:19:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1613668797; bh=eMQ9wejdkfSy6ufKo1ig20AOpgFlxP2XLZYAMHxn5PE=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=o+azsuTIG+EvZecrrKxGl56aKVz1cmVL9f8VvRBmZMGKJTW9peGWaSQybqp6L89He tmVG+ISK8dtHYa/uuQcnDkFDvxr5CTnGwNy0if5VBHkNK4GwZkDTpobGzjfqkYCSqF RZ3CYUfOJQR01rb1rVHF3zog/NDNVBywuQ5qCTEU= To: Willy Tarreau From: Jari Ruusu Cc: Jari Ruusu , Greg Kroah-Hartman , Scott Branden , Linux ARM , LKML , BCM Kernel Feedback Reply-To: Jari Ruusu Subject: Re: 5.10 LTS Kernel: 2 or 6 years? Message-ID: In-Reply-To: <20210218143341.GB13671@1wt.eu> References: <8cf503db-ac4c-a546-13c0-aac6da5c073b@broadcom.com> <20210218113107.GA12547@1wt.eu> <602E766F.758C74D8@users.sourceforge.net> <20210218143341.GB13671@1wt.eu> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thursday, February 18, 2021 4:33 PM, Willy Tarreau wrote: > Usually you pick an LTS kernel for a specific hardware. If it > works that's great. But you cannot expect hardware to suddenly start to > work in the middle of a stable kernel. Sometimes it happens (PCI IDs) but > that's basically all and that's not their purpose. It was the other way around. Fine working in-tree driver got broken by backported "fixes". I did mention bit-rot. In-tree iwlwifi worked half-ok on early 4.9.y stable. If connection somehow de-autheticated (out of radio range or whatever) it crashed the kernel spectacularly. Eventually that was fixed and in-tree iwlwifi worked fine on 4.9.y and 4.14.y stable kernels. On second half of year 2020 (don't remember exactly when) iwlwifi started causing erratic behavior when some random process terminated, as if some exit processing left some resources un-freed or something weird like that. Upgraded to 4.19.y kernels in hope to fix the issue. Nope, same problems continued there as well. Replacing in-tree iwlwifi with out-of-tree upstream Intel version solved the problem for me. -- Jari Ruusu=C2=A0 4096R/8132F189 12D6 4C3A DCDA 0AA4 27BD=C2=A0 ACDF F073 3C= 80 8132 F189 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, URIBL_BLOCKED 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 E77B4C433DB for ; Thu, 18 Feb 2021 17:21:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 667BA64E79 for ; Thu, 18 Feb 2021 17:21:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 667BA64E79 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=protonmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:Reply-To:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-ID: Subject:From:To:Date:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=+BhAFv6o2sGzaIKJVSPDE397Q5k3VtbkrpvvQBiTmvI=; b=d3DoBmM8RAw1uExkoJiTkP/y29 vGdBPf3ehyfUvT2j6ihE7lTsxqcDBj9wlK1oLxCEWv0AwSbrIoCbqpuUImyJV6HS3xG1utklgl0CR vOWA22j5RpkhouN+Hgmsb+HgwcOvRBqQdWt8eK4VbyNo5k0qINXWoeo/nOGM0Vmq7j8ilUkmO8PjR wgByRbgF7nzBEcpWoiBNtPiz9Pt3vkKaBujL2hlW2fETpNu9bRmFRQ5jANRE5iK9LbBWLSasQmBoA ZdElI0rcMK8pVaFYNh1/hvBIk2H2pw8Sd617lOrzBAzChgtI8AWbMTcYR4tO9rjWrF3fl5Yyvnkxw +fy/O0zw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lCmyE-00075s-LT; Thu, 18 Feb 2021 17:20:06 +0000 Received: from mail-40135.protonmail.ch ([185.70.40.135]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1lCmyA-00074Q-Ab for linux-arm-kernel@lists.infradead.org; Thu, 18 Feb 2021 17:20:04 +0000 Date: Thu, 18 Feb 2021 17:19:54 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com; s=protonmail; t=1613668797; bh=eMQ9wejdkfSy6ufKo1ig20AOpgFlxP2XLZYAMHxn5PE=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=o+azsuTIG+EvZecrrKxGl56aKVz1cmVL9f8VvRBmZMGKJTW9peGWaSQybqp6L89He tmVG+ISK8dtHYa/uuQcnDkFDvxr5CTnGwNy0if5VBHkNK4GwZkDTpobGzjfqkYCSqF RZ3CYUfOJQR01rb1rVHF3zog/NDNVBywuQ5qCTEU= To: Willy Tarreau From: Jari Ruusu Subject: Re: 5.10 LTS Kernel: 2 or 6 years? 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