From patchwork Fri Nov 7 07:44:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 40375 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-wi0-f198.google.com (mail-wi0-f198.google.com [209.85.212.198]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id AD5EB24237 for ; Fri, 7 Nov 2014 07:44:51 +0000 (UTC) Received: by mail-wi0-f198.google.com with SMTP id n3sf1559586wiv.1 for ; Thu, 06 Nov 2014 23:44:50 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:delivered-to:mime-version:in-reply-to:references :date:message-id:subject:from:to:cc:sender:precedence:list-id :x-original-sender:x-original-authentication-results:mailing-list :list-post:list-help:list-archive:list-unsubscribe:content-type; bh=JbBaCBGUB1ytOQnYYWSQ3Y3g7d5UWHGCSrx2ja4Fp/c=; b=QdFxS6f9XT3sVDfqfILgZstztSEQtaw4/y7IEd22fMGfBu9TbtgIt1QNeIc4tgOdxX Pm5g9m1Aew5q/misDoNGIiWK/ZtpTcsD4iciCkrWtrkZZLJxdZ9AbOJp0YjogCG/7OV6 kiDmyNiivMGpdF9tJ/g8HEWV+Ex19c2iRpFIo5mioz24MgciS4xvx9qGNh+6XhajwBvJ riC1DKfgtFQyg22/lYKtz9Duv0l7jCMF6lZzg4BnUi0tM2Rv70JC02GnJIjl2eMKKrI4 ZYgGrYyGwSpLDc6sGcPW2rlAiOiSUGIQJabXNZX+CD+g6NmNDk0OKsO75L1DDQGnWyAX 1xmA== X-Gm-Message-State: ALoCoQnZj3PnlRZWlady/iueOdpUZDu6sRrSrtJ/irIxIdHU57kGPNS9fURPbF24udhmjjr4xGy7 X-Received: by 10.112.247.74 with SMTP id yc10mr1590832lbc.8.1415346290878; Thu, 06 Nov 2014 23:44:50 -0800 (PST) X-BeenThere: patchwork-forward@linaro.org Received: by 10.152.6.227 with SMTP id e3ls181333laa.69.gmail; Thu, 06 Nov 2014 23:44:50 -0800 (PST) X-Received: by 10.112.235.196 with SMTP id uo4mr478459lbc.66.1415346290573; Thu, 06 Nov 2014 23:44:50 -0800 (PST) Received: from mail-lb0-f170.google.com (mail-lb0-f170.google.com. [209.85.217.170]) by mx.google.com with ESMTPS id ak6si14097833lbc.58.2014.11.06.23.44.50 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 06 Nov 2014 23:44:50 -0800 (PST) Received-SPF: pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.170 as permitted sender) client-ip=209.85.217.170; Received: by mail-lb0-f170.google.com with SMTP id z12so2255404lbi.1 for ; Thu, 06 Nov 2014 23:44:50 -0800 (PST) X-Received: by 10.112.14.69 with SMTP id n5mr9695436lbc.34.1415346290077; Thu, 06 Nov 2014 23:44:50 -0800 (PST) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patch@linaro.org Received: by 10.112.184.201 with SMTP id ew9csp161280lbc; Thu, 6 Nov 2014 23:44:49 -0800 (PST) X-Received: by 10.66.118.136 with SMTP id km8mr10526053pab.100.1415346288451; Thu, 06 Nov 2014 23:44:48 -0800 (PST) Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id nx7si8289943pbb.70.2014.11.06.23.44.45 for ; Thu, 06 Nov 2014 23:44:48 -0800 (PST) Received-SPF: none (google.com: linux-kernel-owner@vger.kernel.org does not designate permitted sender hosts) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751322AbaKGHon (ORCPT + 25 others); Fri, 7 Nov 2014 02:44:43 -0500 Received: from mail-lb0-f175.google.com ([209.85.217.175]:55457 "EHLO mail-lb0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750962AbaKGHom (ORCPT ); Fri, 7 Nov 2014 02:44:42 -0500 Received: by mail-lb0-f175.google.com with SMTP id n15so2222479lbi.6 for ; Thu, 06 Nov 2014 23:44:40 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.112.11.133 with SMTP id q5mr1768329lbb.77.1415346280867; Thu, 06 Nov 2014 23:44:40 -0800 (PST) Received: by 10.112.84.67 with HTTP; Thu, 6 Nov 2014 23:44:40 -0800 (PST) In-Reply-To: <20141107073720.GB24745@yliu-dev.sh.intel.com> References: <20141107054741.GB30507@yliu-dev.sh.intel.com> <20141107073720.GB24745@yliu-dev.sh.intel.com> Date: Fri, 7 Nov 2014 08:44:40 +0100 Message-ID: Subject: Re: [LKP] [dmi] PANIC: early exception 0e rip 10:ffffffff81899e6b error 9 cr2 ffffffffff240000 From: Ard Biesheuvel To: Yuanhan Liu Cc: LKP , Matt Fleming , Leif Lindholm , LKML Sender: linux-kernel-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: ard.biesheuvel@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.170 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , On 7 November 2014 08:37, Yuanhan Liu wrote: > On Fri, Nov 07, 2014 at 08:17:36AM +0100, Ard Biesheuvel wrote: >> On 7 November 2014 06:47, LKP wrote: >> > FYI, we noticed the below changes on >> > >> > https://git.linaro.org/people/ard.biesheuvel/linux-arm efi-for-3.19 >> > commit aacdce6e880894acb57d71dcb2e3fc61b4ed4e96 ("dmi: add support for SMBIOS 3.0 64-bit entry point") >> > >> > >> > +-----------------------+------------+------------+ >> > | | 2fa165a26c | aacdce6e88 | >> > +-----------------------+------------+------------+ >> > | boot_successes | 20 | 10 | >> > | early-boot-hang | 1 | | >> > | boot_failures | 0 | 5 | >> > | PANIC:early_exception | 0 | 5 | >> > +-----------------------+------------+------------+ >> > >> > >> > [ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000036fffffff] usable >> > [ 0.000000] bootconsole [earlyser0] enabled >> > [ 0.000000] NX (Execute Disable) protection: active >> > PANIC: early exception 0e rip 10:ffffffff81899e6b error 9 cr2 ffffffffff240000 >> > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.18.0-rc2-gc5221e6 #1 >> > [ 0.000000] 0000000000000000 ffffffff82203d30 ffffffff819f0a6e 00000000000003f8 >> > [ 0.000000] ffffffffff240000 ffffffff82203e18 ffffffff823701b0 ffffffff82511401 >> > [ 0.000000] 0000000000000000 0000000000000ba3 0000000000000000 ffffffffff240000 >> > [ 0.000000] Call Trace: >> > [ 0.000000] [] dump_stack+0x4e/0x68 >> > [ 0.000000] [] early_idt_handler+0x90/0xb7 >> > [ 0.000000] [] ? dmi_save_one_device+0x81/0x81 >> > [ 0.000000] [] ? dmi_table+0x3f/0x94 >> > [ 0.000000] [] ? dmi_table+0x16/0x94 >> > [ 0.000000] [] ? dmi_save_one_device+0x81/0x81 >> > [ 0.000000] [] ? dmi_save_one_device+0x81/0x81 >> > [ 0.000000] [] dmi_walk_early+0x44/0x69 >> > [ 0.000000] [] dmi_present+0x180/0x1ff >> > [ 0.000000] [] dmi_scan_machine+0x144/0x191 >> > [ 0.000000] [] ? loglevel+0x31/0x31 >> > [ 0.000000] [] setup_arch+0x490/0xc73 >> > [ 0.000000] [] ? printk+0x4d/0x4f >> > [ 0.000000] [] start_kernel+0x9c/0x43f >> > [ 0.000000] [] ? early_idt_handlers+0x120/0x120 >> > [ 0.000000] [] x86_64_start_reservations+0x2a/0x2c >> > [ 0.000000] [] x86_64_start_kernel+0x13b/0x14a >> > [ 0.000000] RIP 0x4 >> > >> >> This is most puzzling. Could anyone decode the exception? >> This looks like the non-EFI path through dmi_scan_machine(), which >> calls dmi_present() /after/ calling dmi_smbios3_present(), which >> apparently has not found the _SM3_ header tag. Or could the call stack >> be inaccurate? >> >> Anyway, it would be good to know the exact type of the platform, > > It's a Nehalem-EP machine, wht 16 CPU and 12G memory. > >> and >> perhaps we could find out if there is an inadvertent _SM3_ tag >> somewhere in the 0xF0000 - 0xFFFFF range? > > Sorry, how? > That's not a brand new machine, so I suppose there wouldn't be a SMBIOS 3.0 header lurking in there. Anyway, if you are in a position to try things, could you apply this and try again? That is the only change that is relevant to the non-EFI code path which this machine appears to take, so if this fixes things, that would be valuable information even if it doesn't tell us exactly what is going wrong. Thanks, Ard. --- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -617,7 +617,7 @@ void __init dmi_scan_machine(void) memset(buf, 0, 16); for (q = p; q < p + 0x10000; q += 16) { memcpy_fromio(buf + 16, q, 16); - if (!dmi_smbios3_present(buf) || !dmi_present(buf)) { + if (!dmi_present(buf)) { dmi_available = 1; dmi_early_unmap(p, 0x10000); goto out;