From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752706AbdBMRUw (ORCPT ); Mon, 13 Feb 2017 12:20:52 -0500 Received: from mga03.intel.com ([134.134.136.65]:27752 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752252AbdBMRUu (ORCPT ); Mon, 13 Feb 2017 12:20:50 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.35,156,1484035200"; d="scan'208";a="933375073" Message-ID: <1487006448.2833.94.camel@linux.intel.com> Subject: Re: crypto: NULL deref in sha512_mb_mgr_get_comp_job_avx2 From: Tim Chen To: Herbert Xu Cc: Dmitry Vyukov , David Miller , linux-crypto@vger.kernel.org, LKML , megha.dey@linux.intel.com, fenghua.yu@intel.com, syzkaller Date: Mon, 13 Feb 2017 09:20:48 -0800 In-Reply-To: <20170211105043.GA855@gondor.apana.org.au> References: <20170201184502.GA11649@linux.intel.com> <20170211105043.GA855@gondor.apana.org.au> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.18.5.2 (3.18.5.2-1.fc23) Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2017-02-11 at 18:50 +0800, Herbert Xu wrote: > On Wed, Feb 01, 2017 at 10:45:02AM -0800, Tim Chen wrote: > > > > > > One theory that Mehga and I have is that perhaps the flusher > > and regular computaion updates are stepping on each other.  > > Can you try this patch and see if it helps? > Patch applied.  Thanks. Herbert, Megha is now able to create a test set up that produce similar problem reported by Dmitry.  This patch did not completely fix it.  So maybe you can hold off on merging this patch to the mainline till we can develop a more complete fix. Thanks. Tim