Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932576AbeAKUPV (ORCPT + 1 other); Thu, 11 Jan 2018 15:15:21 -0500 Received: from mail-it0-f50.google.com ([209.85.214.50]:46507 "EHLO mail-it0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932437AbeAKUPU (ORCPT ); Thu, 11 Jan 2018 15:15:20 -0500 X-Google-Smtp-Source: ACJfBouD0WueL4jSJLmQz0m1CY1xMUwvUFsHJXngOsulCNdZ2HajwYMws/KCMVUcXQleQmKn8cSzBQ== From: Vince Weaver X-Google-Original-From: Vince Weaver Date: Thu, 11 Jan 2018 15:15:16 -0500 (EST) X-X-Sender: vince@macbook-air To: Peter Zijlstra cc: Vince Weaver , Ingo Molnar , linux-kernel@vger.kernel.org, Ingo Molnar , Arnaldo Carvalho de Melo , Thomas Gleixner Subject: Re: perf: perf_fuzzer quickly locks up on 4.15-rc7 In-Reply-To: <20180111191125.GG2369@hirez.programming.kicks-ass.net> Message-ID: References: <20180109102507.GG6176@hirez.programming.kicks-ass.net> <20180109132602.GA2369@hirez.programming.kicks-ass.net> <20180111091353.GW6176@hirez.programming.kicks-ass.net> <20180111153845.GD6176@hirez.programming.kicks-ass.net> <20180111170347.GG6176@hirez.programming.kicks-ass.net> <20180111191125.GG2369@hirez.programming.kicks-ass.net> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: Not sure if this info helps, but if I make perf_fuzzer *not* create AUX mmap() buffers, I'm unable to reproduce the hangs both on core2 and haswell. Vince