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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, USER_AGENT_MUTT autolearn=ham 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 52D97C43381 for ; Sat, 2 Mar 2019 11:01:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 1F44320836 for ; Sat, 2 Mar 2019 11:01:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="amnEvRsJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1F44320836 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=1wt.eu Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dtALu38LZgvYrraTTZVJFev+DfCHw4G+FVPPr4ne8XA=; b=amnEvRsJdEpYpw QHtRfUVzjQlVViHB7/PHvRsl9rS4MAr/ip5brzkeGIBG7vJWWZhB3cDFN15vW7iWMxrASp3N4B831 sdJvPGYnGbv2Zp8Wfw2XexloSYGJeFk28/WBedUan2XRGdIvz1yrTxpFY8/vrUGl/ivmQRooRKyWU HhFiw7zKIF2x9Bewy3dglvQypApytAPalfW45FyRM9eS1rY3q5HkV4C7LJehtG+H0kWvBVXcYrTb+ czQ1nNpBk+CzE7nU8D3VIMcFwaSwX3vRVBRw+mGoYnyczRZq+eRwsxlIZLqRpJn76qQ9Wui7QpyGv ro1/YoDALkrbDUwTqC3A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h02Oj-0005nU-Ax; Sat, 02 Mar 2019 11:01:41 +0000 Received: from wtarreau.pck.nerim.net ([62.212.114.60] helo=1wt.eu) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h02Of-0005mN-Jz for linux-arm-kernel@lists.infradead.org; Sat, 02 Mar 2019 11:01:39 +0000 Received: (from willy@localhost) by pcw.home.local (8.15.2/8.15.2/Submit) id x22B1C8B013437; Sat, 2 Mar 2019 12:01:12 +0100 Date: Sat, 2 Mar 2019 12:01:12 +0100 From: Willy Tarreau To: Embedded Engineer Subject: Re: Unstable Kernel behavior on an ARM based board Message-ID: <20190302110112.GA13405@1wt.eu> References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.6.1 (2016-04-27) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190302_030138_073714_F0EF07CF X-CRM114-Status: UNSURE ( 8.22 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sat, Mar 02, 2019 at 03:44:49PM +0500, Embedded Engineer wrote: > We have designed a custom board based on an ARM based SoC (Nvidia > TK1). Much of the board design is derived from reference kit (Jetson > TK1). But on our board, we are facing quite an unstable behavior of > Kernel (v 3.10.40 downstream). ^^^^^^^^^ So not only this kernel is from a branch that went end of life more than a year ago, but within this now unmaintained branch, your version is affected by more than 4000 bugs which were fixed before the branch was dropped : $ git log --oneline v3.10.40..v3.10.108 | wc -l 4044 So there is no hope that anyone will be willing to review each of them and try to guess which ones might be responsible for the problem you're experiencing, the first thing to do is to switch to an up to date kernel which is not affected by many known bugs like this. Branches 4.4, 4.9, 4.14 and 4.19 are long term supported, so it will be a good investment to rebase your possible code onto one of these kernels, you'll get fixes for free for many years. Willy _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel