From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758631Ab2DXXxx (ORCPT ); Tue, 24 Apr 2012 19:53:53 -0400 Received: from gate.crashing.org ([63.228.1.57]:38201 "EHLO gate.crashing.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753468Ab2DXXxw (ORCPT ); Tue, 24 Apr 2012 19:53:52 -0400 Message-ID: <1335311621.15830.42.camel@pasglop> Subject: Re: Regression in 32-bit ppc kernel From: Benjamin Herrenschmidt To: Larry Finger Cc: Paul Mackerras , linuxppc-dev@lists.ozlabs.org, LKML Date: Wed, 25 Apr 2012 09:53:41 +1000 In-Reply-To: <4F973026.3020103@lwfinger.net> References: <4F973026.3020103@lwfinger.net> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.3-0ubuntu6 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2012-04-24 at 17:58 -0500, Larry Finger wrote: > Hi, > > Somewhere between v3.2 and v3.3, the kernel in my Powerbook G4 started issuing > the following traceback on bootup: Does it continue working afterward or not at all ? Are you using the old IDE driver or the newer libata based pata_macio ? Cheers, Ben. > [ 40.264006] irq 23: nobody cared (try booting with the "irqpoll" option) > [ 40.264031] Call Trace: > [ 40.264070] [dfff3f00] [c000984c] show_stack+0x7c/0x194 (unreliable) > [ 40.264102] [dfff3f40] [c00a6840] __report_bad_irq+0x44/0xf4 > [ 40.264119] [dfff3f60] [c00a6adc] note_interrupt+0x1ec/0x2ac > [ 40.264135] [dfff3f80] [c00a48a8] handle_irq_event_percpu+0x250/0x2b8 > [ 40.264152] [dfff3fd0] [c00a4944] handle_irq_event+0x34/0x54 > [ 40.264169] [dfff3fe0] [c00a7514] handle_fasteoi_irq+0xb4/0x124 > [ 40.264192] [dfff3ff0] [c000f5bc] call_handle_irq+0x18/0x28 > [ 40.264208] [dec85ce0] [c000719c] do_IRQ+0x114/0x1cc > [ 40.264226] [dec85d10] [c0015868] ret_from_except+0x0/0x1c > [ 40.264254] --- Exception: 501 at find_vma+0x10/0x80 > [ 40.264259] LR = do_page_fault+0x26c/0x6ac > [ 40.264272] [dec85dd0] [c03f0128] do_page_fault+0x25c/0x6ac (unreliable) > [ 40.264289] [dec85f40] [c00155e4] handle_page_fault+0xc/0x80 > [ 40.264327] --- Exception: 301 at 0x4800a174 > > The problem still exists in v3.4-rc3. I am currently doing a bisection of this > problem, but it will take a long time to complete. > > Note: IRQ 23 is not active in v3.2. > > Thanks, > > Larry