Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752898AbcKRIYm (ORCPT ); Fri, 18 Nov 2016 03:24:42 -0500 Received: from mail-wm0-f44.google.com ([74.125.82.44]:37351 "EHLO mail-wm0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752168AbcKRIYk (ORCPT ); Fri, 18 Nov 2016 03:24:40 -0500 Date: Fri, 18 Nov 2016 09:24:36 +0100 From: Ingo Molnar To: Vince Weaver Cc: "linux-kernel@vger.kernel.org" , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , "dvyukov@google.com" , Alexander Shishkin Subject: Re: perf: fuzzer KASAN: global-out-of-bounds in match_token Message-ID: <20161118082436.GA6992@gmail.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 627 Lines: 18 * Vince Weaver wrote: > On Thu, 17 Nov 2016, Vince Weaver wrote: > > > On Thu, 17 Nov 2016, Vince Weaver wrote: > > > > > > > > [ 911.507365] ================================================================== > > > > [ 911.514824] BUG: KASAN: global-out-of-bounds in match_token+0x268/0x310 at addr ffffffffb14ad058 > > > > [ 911.523912] Read of size 8 by task perf_fuzzer/20662 > > > > [ 911.528945] Address belongs to variable if_tokens+0x78/0xa0 > > I managed to create a short reproducer that reliably causes the issue on > my skylake test machine. Awesome, thanks a lot Vince! Ingo