Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754072Ab2FMNyg (ORCPT ); Wed, 13 Jun 2012 09:54:36 -0400 Received: from cantor2.suse.de ([195.135.220.15]:51865 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753789Ab2FMNyf (ORCPT ); Wed, 13 Jun 2012 09:54:35 -0400 Date: Wed, 13 Jun 2012 15:54:27 +0200 (CEST) From: Jiri Kosina X-X-Sender: jikos@twin.jikos.cz To: Alan Cox Cc: Mahmood Naderan , "linux-kernel@vger.kernel.org" Subject: Re: logging on kernel panic In-Reply-To: <20120613133927.73c44f09@pyramind.ukuu.org.uk> Message-ID: References: <1339589919.53487.YahooMailNeo@web111718.mail.gq1.yahoo.com> <20120613133927.73c44f09@pyramind.ukuu.org.uk> User-Agent: Alpine 2.00 (LRH 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 743 Lines: 21 On Wed, 13 Jun 2012, Alan Cox wrote: > > Hi everybody > > If a system receives kernel panic during boot, will it be logged somewhere? > > Often not.. especially if it is fatal. Look up netconsole however. Well your machine's BIOS can still be providing non-volatile sotrage which under recent kernels registers itself with 'pstore', and you can get the dmesg+panic from there then (provided you have all the necessary bits, such as APEI, compiled in and enabled). -- Jiri Kosina SUSE Labs -- 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/