From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752510AbcHPRDu (ORCPT ); Tue, 16 Aug 2016 13:03:50 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:44033 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751018AbcHPRDt (ORCPT ); Tue, 16 Aug 2016 13:03:49 -0400 Date: Tue, 16 Aug 2016 19:03:42 +0200 From: Peter Zijlstra To: Vince Weaver Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Arnaldo Carvalho de Melo , Alexander Shishkin Subject: Re: perf: fuzzer WARNING event_function_local.constprop Message-ID: <20160816170342.GM30192@twins.programming.kicks-ass.net> References: <20160816100742.GH30192@twins.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23.1 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 16, 2016 at 12:17:27PM -0400, Vince Weaver wrote: > On Tue, 16 Aug 2016, Peter Zijlstra wrote: > > > Could you see if the below cures things? > > > > --- > > kernel/events/core.c | 60 +++++++++++++++++++++++++++++++++++++++++----------- > > 1 file changed, 48 insertions(+), 12 deletions(-) > > yes, it seems to fix things, or at least my reliable test case no longer > will trigger it. Awesome, I'll go write a Changelog and such. Meanwhile I found a livelock in ftrace-perf, once I get that sorted I'll go look at the other things you reported.