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=-5.0 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,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 A1A81C4361B for ; Fri, 18 Dec 2020 14:01:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 768B523AC9 for ; Fri, 18 Dec 2020 14:01:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726810AbgLROBi (ORCPT ); Fri, 18 Dec 2020 09:01:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55646 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726207AbgLROBh (ORCPT ); Fri, 18 Dec 2020 09:01:37 -0500 Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:32c8:5054:ff:fe00:142]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 457DBC06138C for ; Fri, 18 Dec 2020 06:00:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=YsRdlIw1j0ww4MkAqOnBL7nj6Bz8RfTaAFPukAbPwQw=; b=VSpiS+DP56PSv88kUvUmc00Km Qgq4423c/3W2k277eCxXw4dDlDVGnNO+IGc9hF7R3kd2AnAEy6wWC63j5Nu4iMzZAX81hsN+aeHzf QlIkqIx7S6LdVkQAxXsgeJwdU0AW6dobW6TkET4UolFpwt8tqI4kBl1Pz4Rh7JnTeXN5YYexiiFZJ i7MbnvsgdWju5Wkgf7UgbOJ2LFjR9m6F+Skqes/WEs0MM1St44i/I4EQnVlSnIB/URDp+7Rl7bIOh gMY9KjOEsu1Ze4WoBgW/l6mmeZN0n+8JQ3tV+grdZcq+iqFnFPirfDmMNBc6bpqe/wZjw1J+HyjNG tWSTyYStQ==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:44338) by pandora.armlinux.org.uk with esmtpsa (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kqGIx-0005do-1m; Fri, 18 Dec 2020 14:00:23 +0000 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1kqGIs-0007xC-8t; Fri, 18 Dec 2020 14:00:18 +0000 Date: Fri, 18 Dec 2020 14:00:18 +0000 From: Russell King - ARM Linux admin To: Guillaume Tucker Cc: kernelci-results@groups.io, Linus Walleij , Nick Desaulniers , Ard Biesheuvel , Kees Cook , Abbott Liu , linux-kernel@vger.kernel.org, "kernelci@groups.io" , Ingo Molnar , linux-arm-kernel@lists.infradead.org Subject: Re: next/master bisection: baseline.login on ox820-cloudengines-pogoplug-series-3 Message-ID: <20201218140018.GZ1551@shell.armlinux.org.uk> References: <5fdc89c3.1c69fb81.c9707.68bb@mx.google.com> <3e1680ed-94b8-74c9-ffe6-c2bd71f2a705@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3e1680ed-94b8-74c9-ffe6-c2bd71f2a705@collabora.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: Russell King - ARM Linux admin Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Dec 18, 2020 at 01:48:09PM +0000, Guillaume Tucker wrote: > Please see the bisection report below about a boot failure on > ox820-cloudengines-pogoplug-series-3. There was also a bisection > yesterday with next-20201216 which landed on the same commit, on > the same platform and also with oxnas_v6_defconfig. I'm not > aware of any other platform on kernelci.org showing the same > regression. Ah, I bet I know what's happening. We test for the presence of VFP by issuing an instruction to read FPSID. If VFP is not present, this will raise an undefined instruction exception, and we expect to head into the vfp_testing_entry code. I bet Pogoplug, being an ARM11 MPCore platform, either raises an exception here. We probably need to also rework the code in vfp_init() as well to register a temporary hook when reading the FPSID. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!