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 A26D7C433F5 for ; Tue, 19 Apr 2022 18:58:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354012AbiDSTAx (ORCPT ); Tue, 19 Apr 2022 15:00:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233003AbiDSTAw (ORCPT ); Tue, 19 Apr 2022 15:00:52 -0400 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 490D03EF0A; Tue, 19 Apr 2022 11:58:07 -0700 (PDT) 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=Bp4bwe3H7WczeFj56jWpI8QBoijIjdBXfNXBKn0bveA=; b=BnjvFkL1Ut5niN1GJU9Qqiqxk6 bSPHAiXL02AryU4BQbQpKlkwkXIt6mnpaGai1EkMfb0N77GoGMiPu82Wt1d4/+QTWXcjmBV6Ku7ag 5hFnENghTqRcnVGh//6lZ3HUdy935pKzoa0T5tTd6a06gSHsV+1rn8Io1dCb+FjgCxRGlfV1yw4Y7 cXkAHqXV7UtAWVHSPZreuF+Fv6h6X24hK0ekZ6grYTMiEtvlDlP9dUvb31vc66WRUZZTLiANfU0Sd ijIbnGbDawioK8ZKRXJzI4YrOxtoaUSi1Hwf0K71Z6Ka7hBoV/5ziHXVUw7oTmuDiI0mQAuI0pLBc s6mPA9Zw==; Received: from shell.armlinux.org.uk ([fd8f:7570:feb6:1:5054:ff:fe00:4ec]:58334) by pandora.armlinux.org.uk with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1ngt2s-0001Sk-I9; Tue, 19 Apr 2022 19:57:50 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.94.2) (envelope-from ) id 1ngt2g-00011J-Hx; Tue, 19 Apr 2022 19:57:38 +0100 Date: Tue, 19 Apr 2022 19:57:38 +0100 From: "Russell King (Oracle)" To: Naresh Kamboju Cc: Linux ARM , open list , Linux-Next Mailing List , lkft-triage@lists.linaro.org, Stephen Rothwell , Arnd Bergmann , Ard Biesheuvel , Andrew Morton , max.krummenacher@toradex.com, Shawn Guo , Stefano Stabellini , Christoph Hellwig , Konrad Rzeszutek Wilk , "Eric W. Biederman" Subject: Re: [next] arm: boot failed - PC is at cpu_ca15_set_pte_ext Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: Russell King (Oracle) Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org On Tue, Apr 19, 2022 at 04:28:52PM +0530, Naresh Kamboju wrote: > Linux next 20220419 boot failed on arm architecture qemu_arm and BeagleBoard > x15 device. Was the immediately previous linux-next behaving correctly? If so, nothing has changed in the ARM32 kernel tree, so this must be someone else's issue - code that someone else has pushed into linux-next. It looks to me like someone is walking the page tables incorrectly, somewhere buried in handle_mm_fault(), because the PTE pointer is in the upper-2k of a 4k page, which is most definitely illegal on arm32. -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!