From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: 2.6.19-rc6 : Spontaneous reboots, stack overflows - seems to implicate xfs, scsi, networking, SMP Date: Fri, 24 Nov 2006 08:52:38 +0100 Message-ID: <1164354759.3147.31.camel@laptopd505.fenrus.org> References: <9a8748490611211551v2ebe88fel2bcf25af004c338a@mail.gmail.com> <20061122.201013.112290046.davem@davemloft.net> <20061123070837.GV11034@melbourne.sgi.com> <200611231416.03387.netdev@axxeo.de> <1164307020.3147.3.camel@laptopd505.fenrus.org> <20061124005528.GF11034@melbourne.sgi.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: Ingo Oeser , David Miller , jesper.juhl@gmail.com, chatz@melbourne.sgi.com, linux-kernel@vger.kernel.org, xfs@oss.sgi.com, xfs-masters@oss.sgi.com, netdev@vger.kernel.org, linux-scsi@vger.kernel.org Return-path: Received: from pentafluge.infradead.org ([213.146.154.40]:16086 "EHLO pentafluge.infradead.org") by vger.kernel.org with ESMTP id S1757628AbWKXHwp (ORCPT ); Fri, 24 Nov 2006 02:52:45 -0500 To: David Chinner In-Reply-To: <20061124005528.GF11034@melbourne.sgi.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 2006-11-24 at 11:55 +1100, David Chinner wrote: > On Thu, Nov 23, 2006 at 07:37:00PM +0100, Arjan van de Ven wrote: > > On Thu, 2006-11-23 at 14:16 +0100, Ingo Oeser wrote: > > > Hi there, > > > > > > David Chinner schrieb: > > > > If the softirqs were run on a different stack, then a lot of these > > > > softirqs DO run on their own stack! > > So they run on a separate stack for 4k stacks on x86? > > They don't run on a separate stack for 8k stacks on x86 - > Jesper's traces show that - so this may indicate an issue > with the methodology used to generate the stack overflow > traces inteh first place. i.e. if 4k stacks use a separate > stack, then most of the reported overflows are spurious > and would not normally occur on 4k stack systems.. > > Can you confirm this, Arjan? yes there are separate stacks for softirq and hardirq context with 4K stacks, but not for 8K stacks. -- if you want to mail me at work (you don't), use arjan (at) linux.intel.com Test the interaction between Linux and your BIOS via http://www.linuxfirmwarekit.org