Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754432Ab0BAR4G (ORCPT ); Mon, 1 Feb 2010 12:56:06 -0500 Received: from qw-out-2122.google.com ([74.125.92.27]:34802 "EHLO qw-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752091Ab0BAR4C (ORCPT ); Mon, 1 Feb 2010 12:56:02 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; b=ALwcqtqstcUumKQap3L+nsYEX/HdxHJ+g2ObAFKTdy30voR6oYbbEsWwZH5vlUoYY/ FQGbtBFEXnYb4N+PUHmLLUYg9ahBr31tieeBCnkMCmIstJgKf15r9WyGbY2bB1OQeP7X b5nLIMy7UbHs3DW3lsfpVR8UIXO3dcy23e4HU= Message-ID: <4B671606.3080405@gmail.com> Date: Mon, 01 Feb 2010 09:57:26 -0800 From: "Justin P. Mattock" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091114 Lightning/1.0pre Thunderbird/3.0b4 MIME-Version: 1.0 To: Dan Carpenter , linux1394-devel@lists.sourceforge.net, "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Stefan Richter Subject: Re: [Bug #14487] PANIC: early exception 08 rip 246:10 error ffffffff810251b5 cr2 0 References: <4B6630CA.9010207@gmail.com> <20100201125441.GB2576@bicker> In-Reply-To: <20100201125441.GB2576@bicker> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3530 Lines: 98 On 02/01/10 04:54, Dan Carpenter wrote: > On Sun, Jan 31, 2010 at 05:39:22PM -0800, Justin P. Mattock wrote: >> On 01/31/10 16:43, Rafael J. Wysocki wrote: >>> This message has been generated automatically as a part of a report >>> of regressions introduced between 2.6.31 and 2.6.32. >>> >>> The following bug entry is on the current list of known regressions >>> introduced between 2.6.31 and 2.6.32. Please verify if it still should >>> be listed and let me know (either way). >>> >>> >>> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=14487 >>> Subject : PANIC: early exception 08 rip 246:10 error ffffffff810251b5 cr2 0 >>> Submitter : Justin P. Mattock >>> Date : 2009-10-23 16:45 (101 days old) >>> References : http://lkml.org/lkml/2009/10/23/252 >>> >>> >>> >> >> >> yeah still hitting this. >> looking at the issue if I change: >> >> @@ 260 >> >> if ((class == 0xffffffff)) >> continue; >> to >> >> if ((class == 0xffffffff || 0xffffffffffffffff)) >> continue; >> > > Uh... 0xffffffffffffffff is always true so basically that's the same as deleting the > if condition. > > I've added the linux1394-devel people to the CC list. > > Justin has found an issue that when he boots with: ohci1394_dma=early his computer > crashes. > > He can get it to boot by modifying drivers/ieee1394/init_ohci1394_dma.c: > > init_ohci1394_dma_on_all_controllers() > 254 /* Poor man's PCI discovery, the only thing we can do at early boot */ > 255 for (num = 0; num< 32; num++) { > 256 for (slot = 0; slot< 32; slot++) { > 257 for (func = 0; func< 8; func++) { > 258 u32 class = read_pci_config(num,slot,func, > 259 PCI_CLASS_REVISION); > 260 if ((class == 0xffffffff)) > 261 continue; /* No device at this func */ > > If he continues here then his system boots. > > 262 > 263 if (class>>8 != PCI_CLASS_SERIAL_FIREWIRE_OHCI) > 264 continue; /* Not an OHCI-1394 device */ > 265 > 266 init_ohci1394_controller(num, slot, func); > 267 break; /* Assume one controller per device */ > > This comment is not terribly clear btw. The code assumes one controller per slot. > > 268 } > 269 } > 270 } > > regards, > dan carpenter > > >> I'm able to boot, but don't have enough knowledge to know >> what is really happening(or how to execute this). >> will continue looking at this >> (hopefully I get somewhere on this); >> >> Justin P. Mattock >> -- >> 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/ > yeah I'll admit it, I don't know what I'm doing (but am willing to try). Thanks for the response, I'll try and give as much info on this as possible. Justin P. Mattock -- 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/