Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756297AbcCOPk2 (ORCPT ); Tue, 15 Mar 2016 11:40:28 -0400 Received: from [198.137.202.9] ([198.137.202.9]:52496 "EHLO bombadil.infradead.org" rhost-flags-FAIL-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1756270AbcCOPkY (ORCPT ); Tue, 15 Mar 2016 11:40:24 -0400 Date: Tue, 15 Mar 2016 16:38:30 +0100 From: Peter Zijlstra To: Vince Weaver Cc: mingo@kernel.org, alexander.shishkin@linux.intel.com, eranian@google.com, linux-kernel@vger.kernel.org, dvyukov@google.com, andi@firstfloor.org, jolsa@redhat.com, panand@redhat.com, sasha.levin@oracle.com, oleg@redhat.com, Borislav Petkov Subject: Re: [PATCH 00/12] perf: more fixes Message-ID: <20160315153830.GA6356@twins.programming.kicks-ass.net> References: <20160224174539.570749654@infradead.org> <20160310143924.GR6356@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 Content-Length: 885 Lines: 21 On Thu, Mar 10, 2016 at 09:44:30AM -0500, Vince Weaver wrote: > On Thu, 10 Mar 2016, Peter Zijlstra wrote: > > > On Wed, Feb 24, 2016 at 06:45:39PM +0100, Peter Zijlstra wrote: > > > > Boris, who has been running syz-kaller on AMD hardware and was hitting a > > very similar bug with the AMD-IBS code, says its not fixed it for him, > > so maybe there's still more to find. > > sorry I am not being much help with this big syz-kaller bug hunt, but I > just wanted to chime in that there's a (probably the same) long standing > IBS bug that perf_fuzzer hits all the time too, it was bad enough > that I had to stop running perf_fuzzer on my AMD box. Running perf_fuzzer on that AMD box is still producing lots of fail, I seen long strings of dazed and confused msgs, indicating we have a 'spurious' NMI problem somewhere. And occasionally it locks up.. So we're not there yet.