From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262789AbTLDEPw (ORCPT ); Wed, 3 Dec 2003 23:15:52 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262805AbTLDEPv (ORCPT ); Wed, 3 Dec 2003 23:15:51 -0500 Received: from fw.osdl.org ([65.172.181.6]:48066 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262789AbTLDEPu (ORCPT ); Wed, 3 Dec 2003 23:15:50 -0500 Date: Wed, 3 Dec 2003 20:11:49 -0800 From: "Randy.Dunlap" To: Mike Fedyk Cc: fuzzy77@free.fr, zwane@holomorphy.com, linux-kernel@vger.kernel.org Subject: Re: [kernel panic @ reboot] 2.6.0-test10-mm1 Message-Id: <20031203201149.42f58e2a.rddunlap@osdl.org> In-Reply-To: <20031204013408.GE29119@mis-mike-wstn.matchmail.com> References: <3FC4E8C8.4070902@free.fr> <20031126233738.GD1566@mis-mike-wstn.matchmail.com> <3FC53A3B.50601@free.fr> <20031202160303.2af39da0.rddunlap@osdl.org> <20031203003106.GF4154@mis-mike-wstn.matchmail.com> <20031202162745.40c99509.rddunlap@osdl.org> <3FCDE506.7020302@free.fr> <3FCE877B.3010703@free.fr> <20031204013408.GE29119@mis-mike-wstn.matchmail.com> Organization: OSDL X-Mailer: Sylpheed version 0.9.4 (GTK+ 1.2.10; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 3 Dec 2003 17:34:08 -0800 Mike Fedyk wrote: | On Thu, Dec 04, 2003 at 02:01:47AM +0100, Vince wrote: | > Zwane Mwaikambo wrote: | > >On Wed, 3 Dec 2003, Vince wrote: | > > | > > | > >>Well, I get indeed a nice oops on screen with this sysctl... but the | > >>oops/panic does not appear on the floppy dump :-/ | > >> | > >>-------------------------------------------------------- | > >><0>Kernel panic: Fatal exception | > >><4> <0>Dumping messages in 100 seconds : last chance for | > >>Alt-SysRq...<6>SysRq : | > >>Emergency Sync | > >><6>SysRq : Emergency Sync | > >><6>SysRq : Emergency Remount R/O | > >><6>SysRq : Trying to dump through real mode | > >><4> | > >>--------------------------------------------------------- | > > | > > | > >Do you see any floppy disk activity at all? I'll see if i can come up with | > >something. | > | > Yes, there *is* floppy activity. The previous messages make it to the | > floppy (in that case, I experienced with | > Alt-Sysrq+S/Alt-Sysrq+U/Alt-Sysrq+D), but the oops doesn't... It seems possible that these commands (above) are flushing the kernel log buffer to disk (/var/log/messages e.g.), so that they don't need to be saved by kmsgdump. Have you looked in the kernel message file for them? | do you mean s/Alt-Sysrq+D/Alt-Sysrq+B/ ? | | On 2.4 there isn't a Alt-Sysrq+D, but maybe there is on 2.6...? The kmsgdump patch adds Alt-SysRq-D to force entry into kmsgdump instead of getting there via a panic. -- ~Randy