Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750709AbXAHVHb (ORCPT ); Mon, 8 Jan 2007 16:07:31 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750716AbXAHVHb (ORCPT ); Mon, 8 Jan 2007 16:07:31 -0500 Received: from mga02.intel.com ([134.134.136.20]:42530 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750709AbXAHVHa (ORCPT ); Mon, 8 Jan 2007 16:07:30 -0500 X-ExtLoop1: 1 X-IronPort-AV: i="4.13,160,1167638400"; d="scan'208"; a="182799473:sNHT17866779" Date: Mon, 8 Jan 2007 13:07:13 -0800 From: Kristen Carlson Accardi To: Jiri Kosina Cc: Len Brown , Andrew Morton , linux-acpi@intel.com, linux-kernel@vger.kernel.org Subject: Re: ACPI bay - 2.6.20-rc3-mm1 hangs on boot Message-Id: <20070108130713.57f3f351.kristen.c.accardi@intel.com> In-Reply-To: References: X-Mailer: Sylpheed version 2.2.10 (GTK+ 2.8.20; i386-redhat-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 Content-Length: 1884 Lines: 65 On Fri, 5 Jan 2007 14:19:41 +0100 (CET) Jiri Kosina wrote: > Hi, > > 2.6.20-rc3-mm1 hangs on boot on my IBM T42p when compiled with ACPI_BAY=y. > Below is the trace of two BUGs I get. Hi, I was able to duplicate this problem - it only occurs when the bay driver is built-in, not when the bay driver is compiled as a module. While I work on the fix for the problem, you can as a temporary workaround just use ACPI_BAY=m. By the way, I also found that the bay driver will not build at all if ACPI_DOCK=n. Oops. I will fix that too. thanks, Kristen > > When compiled with ACPI_BAY=n, it boots fine. > > The traces are hand-rewritten (no serial console on that machine), so I > have omitted the code offsets in the stacktraces. > > ACPI: ACPI Dock Station Driver > ACPI: \_SB_PCI0.IDE0.SCND.MSTR: found ejectable bay > ACPI: \_SB_PCI0.IDE0.SCND.MSTR: Adding notify handler > PM: Adding info for platform:bay.0 > ACPI: Bay [\_SB_.PCI0.IDE0.SCND.MSTR] Added > BUG: at lib/kref.c:32 kref_get() > kref_get+0x34/0x3b > kobject_get+0xf/0x13 > get_bus+0xe/0x1d > bus_add_driver+0x13/0x165 > init_waitqueue_head+0x12/0x1e > bay_init+0x57/0x79 > find_bay+0x0/0x2c4 > init+0x88/0x16d > restore_nocheck+0x12/0x15 > init+0x0/0x16d > init+0x0/0x16d > kernel_thread_helper+0x7/0x10 > ========== > BUG: at lib/kref.c:32 kref_get() > kref_get+0x34/0x3b > kobject_get+0xf/0x13 > kobject_init+0x5d/0x70 > kobject_set_name+0x5c/0x92 > bus_add_driver+0x50/0x79 > bay_init+0x57/0x79 > find_bay+0x0/0x2c4 > init+0x88/0x16d > init+0x88/0x16d > kernel_thread_helper+0x7/0x10 > ========= > > -- > Jiri Kosina > - 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/