Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755028Ab3IMMUV (ORCPT ); Fri, 13 Sep 2013 08:20:21 -0400 Received: from mail-we0-f181.google.com ([74.125.82.181]:54461 "EHLO mail-we0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751513Ab3IMMUR (ORCPT ); Fri, 13 Sep 2013 08:20:17 -0400 Date: Fri, 13 Sep 2013 14:20:14 +0200 From: Frederic Weisbecker To: Knut Petersen , Thomas Gleixner Cc: Linus Torvalds , "H. Peter Anvin" , mingo@kernel.org, linux-kernel , gcoady.lk@gmail.com Subject: Re: [BUG] kernel panic during shutdown in run_timer_softirq() Message-ID: <20130913122012.GA4844@somewhere> References: <5232E294.9090909@t-online.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <5232E294.9090909@t-online.de> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1957 Lines: 50 On Fri, Sep 13, 2013 at 12:01:56PM +0200, Knut Petersen wrote: > Hi everybody! > > Since about July I observe occasional kernel panics happening only during system shutdown on two systems. > > Hardware: mobos: both AOpen i915GMm-hfs mobos, cpus: Pentium-M Dothan / Banias, mem: 2GB > Although the stack traces differ, there is one thing in common: CS:EIP is in run_timer_softirq(). > > A first report was posted to lkml on 2013-07-10: http://www.gossamer-threads.com/lists/linux/kernel/1744892?#1744892 > jpg of the stack trace: http://www.gossamer-threads.com/lists/engine?do=post_attachment;postatt_id=57017;list=linux > > There were several reports of kernel panics with run_timer_softirq() in the call_trace. > > @Grant: You reported a kernel panic during shutdown for kernel 3.7.5, but the jpg is not accessible. > Could you please verify if your report is related? > > The problem is still present in yesterdays git master, see attached stacktrace. > A shortened transcription of that stacktrace: > > Bug: unable to handle kernel paging request at ... > [...] > Call Trace: > __do_softirq+[...] > irq_exit+[...] > smp_apic_timer_interrupt+[...] > apic_timer_interrupt+[...] > ?default_idle+[...] > ?clocksource_mark_unstable+[...] > ?default_idle+[...] > arch_cpu_idle+[...] > cpu_startup_entry+[...] > rest_init+[...] > start_kernel+[...] > i386_start_kernel+[...] > [...] > EIP: run_timer_softirq+[...] > Kernel panic panic - not syncing: Fatal exception in interrupt > > Any idea how to debug that problem? Insert some debugging code and constantly rebooting one of the > machines would be an option, but I don?t have a clue what to insert .... Adding Thomas, in case he has a clue. Thanks. -- 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/