Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754887AbaDPRrm (ORCPT ); Wed, 16 Apr 2014 13:47:42 -0400 Received: from merlin.infradead.org ([205.233.59.134]:57268 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754382AbaDPRrl (ORCPT ); Wed, 16 Apr 2014 13:47:41 -0400 Date: Wed, 16 Apr 2014 19:47:33 +0200 From: Peter Zijlstra To: Vince Weaver Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Ingo Molnar Subject: Re: [perf] more perf_fuzzer memory corruption Message-ID: <20140416174733.GQ26782@laptop.programming.kicks-ass.net> References: <20140416141514.GS11182@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/1.5.21 (2012-12-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Apr 16, 2014 at 01:43:49PM -0400, Vince Weaver wrote: > On Wed, 16 Apr 2014, Vince Weaver wrote: > > > On Wed, 16 Apr 2014, Peter Zijlstra wrote: > > > > > Does the below make any difference? I've only ran it through some light > > > testing to make sure it didn't insta-explode on running. > > > > > > (perf stat make -j64 -s in fact) > > > > I'm running with your patch now and so far so good. > > spoke too soon, just got this with your patch applied > (I wasn't running ftrace so no trace with this one): > > [ 1555.756490] Slab corruption (Not tainted): kmalloc-2048 start=ffff88011879a000, len=2048 > [ 1555.765699] 040: 6b 6b 6b 6b 6b 6b 6b 6b 88 a7 97 ce 00 88 ff ff kkkkkkkk........ > [ 1555.774684] Next obj: start=ffff88011879a800, len=2048 > [ 1555.780396] 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > [ 1555.789150] 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Awww, bugger. OK more staring tomorrow. Thanks for trying. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/