From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753070AbcDZUwX (ORCPT ); Tue, 26 Apr 2016 16:52:23 -0400 Received: from smtprelay0055.hostedemail.com ([216.40.44.55]:36924 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752389AbcDZUwU (ORCPT ); Tue, 26 Apr 2016 16:52:20 -0400 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,rostedt@goodmis.org,:::::::::::::,RULES_HIT:41:69:355:379:541:599:800:960:973:988:989:1260:1277:1311:1313:1314:1345:1359:1437:1515:1516:1518:1534:1539:1593:1594:1711:1714:1730:1747:1777:1792:2393:2553:2559:2562:3138:3139:3140:3141:3142:3351:3622:3874:3876:4250:4321:5007:6261:7875:7903:7974:9040:10004:10400:10848:10967:11026:11232:11658:11914:12043:12438:12517:12519:12555:12683:12740:13069:13311:13357:13439:14110:14181:14659:14721:21080,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:2,LUA_SUMMARY:none X-HE-Tag: cars90_888c8c813704a X-Filterd-Recvd-Size: 2096 Date: Tue, 26 Apr 2016 16:52:17 -0400 From: Steven Rostedt To: Tony Lindgren Cc: "Paul E. McKenney" , linux-kernel@vger.kernel.org, mingo@kernel.org, Russell King , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH arm 1/1] arm: Use _rcuidle tracepoint to allow use from idle Message-ID: <20160426165217.5b46eea7@gandalf.local.home> In-Reply-To: <20160426204613.GT5995@atomide.com> References: <20160426175214.GJ3715@linux.vnet.ibm.com> <20160426182939.GO5995@atomide.com> <20160426190755.GK3715@linux.vnet.ibm.com> <20160426193949.GP5995@atomide.com> <20160426154414.7bb33de4@gandalf.local.home> <20160426195158.GR5995@atomide.com> <20160426200613.GO3715@linux.vnet.ibm.com> <20160426201134.GA29779@linux.vnet.ibm.com> <20160426202538.GS5995@atomide.com> <20160426204148.GR3715@linux.vnet.ibm.com> <20160426204613.GT5995@atomide.com> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 26 Apr 2016 13:46:15 -0700 Tony Lindgren wrote: > [ INFO: suspicious RCU usage. ] > 4.6.0-rc5-next-20160426+ #1127 Not tainted > ------------------------------- > include/trace/events/clk.h:45 suspicious rcu_dereference_check() usage! > > other info that might help us debug this: > > > RCU used illegally from idle CPU! > rcu_scheduler_active = 1, debug_locks = 0 > RCU used illegally from extended quiescent state! > 2 locks held by swapper/0/0: > #0: (&oh->hwmod_key#30){......}, at: [] omap_hwmod_enable+0x18/0x44 > #1: (enable_lock){......}, at: [] clk_enable_lock+0x18/0x124 > Hah! I knew that mole would show up. -- Steve