From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754788AbbCPOBT (ORCPT ); Mon, 16 Mar 2015 10:01:19 -0400 Received: from mail-qg0-f53.google.com ([209.85.192.53]:36034 "EHLO mail-qg0-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751221AbbCPOBR (ORCPT ); Mon, 16 Mar 2015 10:01:17 -0400 Message-ID: <5506E228.3050204@hurleysoftware.com> Date: Mon, 16 Mar 2015 10:01:12 -0400 From: Peter Hurley User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Pranith Kumar , Michael Ellerman CC: "open list:LINUX FOR POWERPC..." , LKML Subject: Re: linux panic on 4.0.0-rc4 References: <1426493810.4716.0.camel@ellerman.id.au> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/16/2015 09:30 AM, Pranith Kumar wrote: > On Mon, Mar 16, 2015 at 4:16 AM, Michael Ellerman wrote: >> On Mon, 2015-03-16 at 01:34 -0400, Pranith Kumar wrote: >>> On Mon, Mar 16, 2015 at 1:11 AM, Pranith Kumar wrote: >>>> Hello, >>>> >>>> I have a power mac mini 32-bit system. >>>> >>> ... >>>> You can see the panic message here: http://imgur.com/s1lH15g. (there >>>> is no log and I have no serial console). >>> >>> There was some debug code in there when it hit. The actual hang seems >>> to be in printk_late_init(). It does not return from this. May be this >>> is a hint? >> >> That is where the boot consoles get disabled and it switches to the "real" >> console. It suggests that the system is not "hung" there but you just lost >> output. >> >> Try booting with "keep_bootcon" ? > > I tried this and got to the same place as in the first mail: > http://imgur.com/s1lH15g > > There is a kernel panic with the message printed. Any more suggestions > to how to debug this? git bisect. Regards, Peter Hurley