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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,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 E05B4C433E0 for ; Wed, 29 Jul 2020 09:50:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A732C207E8 for ; Wed, 29 Jul 2020 09:50:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="cRq9tkO9"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="DmlOq4+6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726757AbgG2Juz (ORCPT ); Wed, 29 Jul 2020 05:50:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45066 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726208AbgG2Juy (ORCPT ); Wed, 29 Jul 2020 05:50:54 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BDC22C061794 for ; Wed, 29 Jul 2020 02:50:54 -0700 (PDT) From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1596016252; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mEp89+etIGJZdpdVKttldSzJgWyllaXhBDptvwj7oJA=; b=cRq9tkO98RD8oRNAY8eZmj9a9Xw2bHDfLEjua9fNYEQqSO1kiOHipiLyeo7nyuIMsYTGsR Hsc0++6tdusDpyt+bHUooW5YLZR5W5Sk2cHD+hlLjDLQLY6sAbxmJza5/arfrxdN86DtIT Tml2XGbHBpmYY5YUo2EYX56iHjzEsuKnO0GnrC0s7SWRtzJ8fXBR38tRHKXmbphWoB/Oqq 27omrcPWl3qrLfap1YyeN9ZZMKVSb3JFyjyBKcLL/DXNf4cJMWmJwnSRT4lds+4JXJ1wPA 3dxsKs8Lj5bPaBrxJ0Y+7JoY+RUXRXPWacv/36rU4ug0CR7H4yB5CeEU14arFw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1596016252; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mEp89+etIGJZdpdVKttldSzJgWyllaXhBDptvwj7oJA=; b=DmlOq4+6WAcU1nUqOjhBQLvwpDF/xtuzHXxgUwE0NbH/QW+b+9yCiZSi0+7WYnQBH3V7Cb IMcaS2z10nZczzCw== To: Scott Branden , bp@alien8.de, x86@kernel.org, mingo@redhat.com Cc: linux-kernel@vger.kernel.org, Tom Lendacky Subject: Re: Kernel panic - not syncing: IO-APIC + timer doesn't work! In-Reply-To: References: <18cb4d48-6571-1fdb-5902-ba64c23eee75@broadcom.com> <87h7tsbs1n.fsf@nanos.tec.linutronix.de> <87blk0aw1k.fsf@nanos.tec.linutronix.de> Date: Wed, 29 Jul 2020 11:50:41 +0200 Message-ID: <87y2n2abv2.fsf@nanos.tec.linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Scott, Scott Branden writes: > On 2020-07-28 1:22 a.m., Thomas Gleixner wrote: >> Scott Branden writes: >>> Bios now updated to latest.=C2=A0 Same kernel panic issue.=C2=A0 Log be= low. >>> >>> I think it is related to power cycling quickly. >>> Should APIC work if PC power cycled in a few seconds or is that the >>> problem? >> Yes, emphasis on should. Just to clarify, if you reboot it works and >> cold start works as well if power was off long enough? >> > So far I have only been able to reproduce the issue by cold start with po= wer off for only a few seconds > before re-powering the system.=C2=A0 It has not failed via reboot yet tha= t I remember. > Will have to keep my eye on whether using reboot is an issue or not. > And also keeping power off longer when doing a cold start. Weird. > Please find attached the failed console log with ignore_loglevel. Aside of the differences caused by the BIOS update there is nothing related to the APIC/IO-APIC setup which is different between the working and failing boot. TBH, I have no idea what's going wrong there. Maybe Tom has one. Thanks, tglx