From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757920Ab3EBKnV (ORCPT ); Thu, 2 May 2013 06:43:21 -0400 Received: from www.linutronix.de ([62.245.132.108]:39120 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755971Ab3EBKnU (ORCPT ); Thu, 2 May 2013 06:43:20 -0400 Date: Thu, 2 May 2013 12:43:19 +0200 (CEST) From: Thomas Gleixner To: Markus Trippelsdorf cc: linux-kernel@vger.kernel.org Subject: Re: WARNING: at kernel/cpu/idle.c:96 In-Reply-To: <20130430155203.GA512@x4> Message-ID: References: <20130430155203.GA512@x4> User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 30 Apr 2013, Markus Trippelsdorf wrote: > Just booted todays git tree and got the following warning: > > ------------[ cut here ]------------ > WARNING: at kernel/cpu/idle.c:96 cpu_startup_entry+0x14d/0x160() > Hardware name: System Product Name > Pid: 0, comm: swapper/2 Not tainted 3.9.0-03462-gab86e97-dirty #424 > Call Trace: > smpboot: Booting Node 0, Processors #1 #2 > [] ? warn_slowpath_common+0x60/0xa0 > [] ? cpu_startup_entry+0x14d/0x160 > ---[ end trace 40a24a5550891913 ]--- Fix below. Thanks, tglx diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index 607af0d..e4cd638 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -312,6 +312,8 @@ void arch_cpu_idle(void) { if (cpuidle_idle_call()) x86_idle(); + else + local_irq_enable(); } /*