From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753831Ab1KDJZZ (ORCPT ); Fri, 4 Nov 2011 05:25:25 -0400 Received: from mail.skyhub.de ([78.46.96.112]:54570 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751262Ab1KDJZY (ORCPT ); Fri, 4 Nov 2011 05:25:24 -0400 Date: Fri, 4 Nov 2011 10:25:20 +0100 From: Borislav Petkov To: Yong Zhang Cc: Sergey Senozhatsky , David Rientjes , Tejun Heo , Ingo Molnar , Borislav Petkov , Peter Zijlstra , linux-kernel@vger.kernel.org, Andrew Morton Subject: Re: WARNING: at kernel/lockdep.c:690 __lock_acquire+0x168/0x164b() Message-ID: <20111104092520.GA16897@gere.osrc.amd.com> References: <20111020212353.GZ25124@google.com> <20111020213644.GB25124@google.com> <20111020230040.GC3586@swordfish.minsk.epam.com> <20111021094520.GA9884@zhy> <20111103071735.GA3228@swordfish.minsk.epam.com> <20111103072705.GA15871@zhy> <20111103074506.GB3228@swordfish.minsk.epam.com> <20111103075354.GA16666@zhy> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20111103075354.GA16666@zhy> 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 On Thu, Nov 03, 2011 at 03:53:54PM +0800, Yong Zhang wrote: > On Thu, Nov 03, 2011 at 10:45:06AM +0300, Sergey Senozhatsky wrote: > > On (11/03/11 15:27), Yong Zhang wrote: > > > Did you have tried it? Though I don't find time to polish it yet but > > > I think will smooth your concern. > > > > > > > I'm compiling the kernel with you patch right now. > > The whole point was just for > > case if someone has different approach or whatsoever. > > Understood. If someone can come up with a simple patch which could > cover the case I mentioned before, that would be great. > /me goes to poke at it. I dunno whether this is related but I get the following on 3.1: [ 5499.537074] INFO: trying to register non-static key. [ 5499.537080] the code is fine but needs lockdep annotation. [ 5499.537083] turning off the locking correctness validator. [ 5499.537088] Pid: 0, comm: kworker/0:1 Not tainted 3.1.0 #1 [ 5499.537091] Call Trace: [ 5499.537094] [] __lock_acquire+0x165d/0x1e30 [ 5499.537109] [] ? double_rq_lock+0x2c/0x80 [ 5499.537115] [] lock_acquire+0x93/0x160 [ 5499.537120] [] ? double_rq_lock+0x2c/0x80 [ 5499.537126] [] _raw_spin_lock+0x36/0x50 [ 5499.537130] [] ? double_rq_lock+0x2c/0x80 [ 5499.537135] [] double_rq_lock+0x2c/0x80 [ 5499.537140] [] load_balance+0x215/0x6c0 [ 5499.537146] [] ? load_balance+0x6c0/0x6c0 [ 5499.537151] [] rebalance_domains+0xbd/0x1d0 [ 5499.537155] [] ? load_balance+0x6c0/0x6c0 [ 5499.537161] [] run_rebalance_domains+0xdc/0x130 [ 5499.537166] [] __do_softirq+0xbd/0x290 [ 5499.537173] [] call_softirq+0x1c/0x30 [ 5499.537178] [] do_softirq+0x85/0xc0 [ 5499.537183] [] irq_exit+0x9e/0xc0 [ 5499.537189] [] smp_call_function_single_interrupt+0x2f/0x40 [ 5499.537195] [] call_function_single_interrupt+0x70/0x80 [ 5499.537199] [] ? native_sched_clock+0x26/0x70 [ 5499.537212] [] ? acpi_idle_enter_simple+0xee/0x11f [processor] [ 5499.537221] [] ? acpi_idle_enter_simple+0xe9/0x11f [processor] [ 5499.537227] [] cpuidle_idle_call+0xdd/0x350 [ 5499.537233] [] cpu_idle+0x6f/0xd0 [ 5499.537238] [] start_secondary+0x1ae/0x1b3 -- Regards/Gruss, Boris.