From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 2F6ABB6EDD for ; Tue, 29 Jun 2010 07:29:40 +1000 (EST) Subject: Re: BUG: scheduling while atomic: swapper/0/0x00000002 From: Benjamin Herrenschmidt To: paulmck@linux.vnet.ibm.com In-Reply-To: <20100628164906.GA6667@linux.vnet.ibm.com> References: <20100609215229.GA12774@linux.vnet.ibm.com> <1276125608.1962.0.camel@pasglop> <20100610010854.GA11432@linux.vnet.ibm.com> <20100628164906.GA6667@linux.vnet.ibm.com> Content-Type: text/plain; charset="UTF-8" Date: Tue, 29 Jun 2010 07:29:29 +1000 Message-ID: <1277760569.4200.190.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, paulus@samba.org, anton@samba.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2010-06-28 at 09:49 -0700, Paul E. McKenney wrote: > And it does appear to be reproducible perhaps 50% of boots running > CONFIG_PREEMPT on kernel-ml8. I have not yet seen it on any other > system. > Do you have a patch to instrument the interrupts so as to get the info > you need, or should I improvise? ftrace & friends ? I don't have anything existing in mind... Cheers, Ben.