From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753186Ab3H0NKO (ORCPT ); Tue, 27 Aug 2013 09:10:14 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.122]:8443 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751590Ab3H0NKM (ORCPT ); Tue, 27 Aug 2013 09:10:12 -0400 X-Authority-Analysis: v=2.0 cv=V4T/IJbi c=1 sm=0 a=Sro2XwOs0tJUSHxCKfOySw==:17 a=Drc5e87SC40A:10 a=4YNYSHFQjk8A:10 a=5SG0PmZfjMsA:10 a=kj9zAlcOel0A:10 a=meVymXHHAAAA:8 a=KGjhK52YXX0A:10 a=jyE81Idm5WYA:10 a=20KFwNOVAAAA:8 a=9Oqxv2pTvx3wCAj1LysA:9 a=CjuIK1q_8ugA:10 a=Iqf1Oun2rhYA:10 a=jEp0ucaQiEUA:10 a=zLp-WXH7mxYA:10 a=TYCdBJHPDWYA:10 a=Sro2XwOs0tJUSHxCKfOySw==:117 X-Cloudmark-Score: 0 X-Authenticated-User: X-Originating-IP: 67.255.60.225 Date: Tue, 27 Aug 2013 09:10:11 -0400 From: Steven Rostedt To: Dave Jones Cc: David Ahern , paulmck@linux.vnet.ibm.com, Linux Kernel Subject: Re: suspicious RCU usage (perf) Message-ID: <20130827091011.18ed8b59@gandalf.local.home> In-Reply-To: <20130826194923.GA1549@redhat.com> References: <20130826145838.GA8377@redhat.com> <20130826162928.GQ3871@linux.vnet.ibm.com> <20130826133041.3d750b1b@gandalf.local.home> <20130826175012.GA25202@redhat.com> <20130826141814.54dcaa89@gandalf.local.home> <20130826182907.GB25202@redhat.com> <521BAFD3.2060404@gmail.com> <20130826194923.GA1549@redhat.com> X-Mailer: Claws Mail 3.9.2 (GTK+ 2.24.20; 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 Mon, 26 Aug 2013 15:49:24 -0400 Dave Jones wrote: > > Do you have /sys/kernel/debug with access permissions? > > Ah, yeah, that'll be it. Good catch. > > Sorry for the false alarm Steve ;) Yeah, but it still does not explain how perf got started. Perf requires a sys_perf_event_open() call to run. -- Steve