From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751207AbaEFQGz (ORCPT ); Tue, 6 May 2014 12:06:55 -0400 Received: from mail-lb0-f177.google.com ([209.85.217.177]:33738 "EHLO mail-lb0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750838AbaEFQGy (ORCPT ); Tue, 6 May 2014 12:06:54 -0400 Date: Tue, 6 May 2014 20:06:51 +0400 From: Cyrill Gorcunov To: Vince Weaver Cc: Peter Zijlstra , linux-kernel@vger.kernel.org, Ingo Molnar Subject: Re: perf_fuzzer crash on pentium 4 Message-ID: <20140506160651.GO28248@moon> References: <20140506154637.GW26782@laptop.programming.kicks-ass.net> <20140506154901.GL28248@moon> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 Tue, May 06, 2014 at 12:05:41PM -0400, Vince Weaver wrote: > On Tue, 6 May 2014, Cyrill Gorcunov wrote: > > > On Tue, May 06, 2014 at 05:46:37PM +0200, Peter Zijlstra wrote: > > > On Tue, May 06, 2014 at 11:42:58AM -0400, Vince Weaver wrote: > > > > > > > > So just to be difficult I fired up the perf_fuzzer on a Pentium 4 machine. > > > > > > > > It crashes more or less instantly (sorry for the line wrapping, > > > > just got the serial console hooked up and don't have minicom configured > > > > right yet). > > > > > > > > this is 3.15-rc4 with the anti-memory corruption patch applied. > > > > > > *sigh*.. the one x86 PMU driver I really don't know. I might actually > > > have some P4 class hardware, I'll try and get it wired up this week > > > somewhere. > > > > I'll take a look, thanks. > > This happens quickly enough I can probably generate a small test case, but > I won't have time to do that until maybe tomorrow. I'm quite busy until night as well, so no rush.