From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759364Ab2DJUAj (ORCPT ); Tue, 10 Apr 2012 16:00:39 -0400 Received: from grendel.xisp.net ([96.255.255.193]:58284 "EHLO ba-blue.xisp.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1759052Ab2DJUAh (ORCPT ); Tue, 10 Apr 2012 16:00:37 -0400 X-Greylist: delayed 977 seconds by postgrey-1.27 at vger.kernel.org; Tue, 10 Apr 2012 16:00:37 EDT Date: Tue, 10 Apr 2012 20:17:59 +0100 From: Dale Amon To: linux-kernel@vger.kernel.org Cc: amon@vnl.com Subject: Repeated fd0 messages during boot Message-ID: <20120410191759.GD4684@vnl.com> Mail-Followup-To: Dale Amon , linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Operating-System: Linux, the choice of a GNU generation User-Agent: Mutt/1.5.21 (2010-09-15) X-Greylist: Delayed for 00:25:54 by milter-greylist-3.0 (ba-blue.xisp.net [96.255.255.200]); Tue, 10 Apr 2012 15:43:56 -0400 (EDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This happened after a recent upgrade using an Ubuntu Precise kernel, 3.2.0-22-generic-pae to be, er, precise. The machine is an old one. It has a floppy controller but has no floppy installed. The dmesg shows some floppy related messages that are not terribly worrisome earlier on: [ 2.071881] agpgart-sis 0000:00:00.0: SiS chipset [1039/0746] [ 2.102241] agpgart-sis 0000:00:00.0: AGP aperture is 128M @ 0xe0000000 [ 2.116375] Floppy drive(s): fd0 is 1.44M [ 2.136428] FDC 0 is a post-1991 82077 [ 2.227141] sis900.c: v1.08.10 Apr. 2 2006 [ 3.111250] sdc: sdc1 [ 3.111838] sd 3:0:0:0: [sdc] Attached SCSI disk [ 4.523572] Btrfs loaded [ 17.188579] end_request: I/O error, dev fd0, sector 0 [ 17.313154] REISERFS (device sda1): found reiserfs format "3.6" with standard journal But around about here, it gets into trouble: [ 58.907693] ata4.00: configured for UDMA/133 [ 58.907754] ata4: EH complete [ 60.434537] init: udev-fallback-graphics main process (1063) terminated with status 1 [ 67.164604] end_request: I/O error, dev fd0, sector 0 [ 68.704019] br0: no IPv6 routers present [ 73.568022] br0: port 1(eth1) entering forwarding state [ 79.320863] end_request: I/O error, dev fd0, sector 0 [ 79.320883] Buffer I/O error on device fd0, logical block 0 [ 91.488597] end_request: I/O error, dev fd0, sector 0 [ 91.488619] Buffer I/O error on device fd0, logical block 0 [ 103.644762] end_request: I/O error, dev fd0, sector 0 [ 103.644784] Buffer I/O error on device fd0, logical block 0 [ 115.808406] end_request: I/O error, dev fd0, sector 0 [ 115.808425] Buffer I/O error on device fd0, logical block 0 [ 127.976466] end_request: I/O error, dev fd0, sector 0 This continues for a considerable time, ie many minutes. Then the machine continues booting normally: [ 1174.164517] Buffer I/O error on device fd0, logical block 0 [ 1174.314178] reiserfs: enabling write barrier flush mode [ 1174.369389] REISERFS (device sda1): Removing [63554 81060 0x0 SD]..done [ 1174.369575] REISERFS (device sda1): Removing [63554 51447 0x0 SD]..done Any idea what is causing this? Kernel bug? Ubuntu patch bug?