From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752053AbbIOKxn (ORCPT ); Tue, 15 Sep 2015 06:53:43 -0400 Received: from mga11.intel.com ([192.55.52.93]:10737 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751054AbbIOKxm (ORCPT ); Tue, 15 Sep 2015 06:53:42 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,535,1437462000"; d="scan'208";a="804742254" Date: Tue, 15 Sep 2015 13:53:32 +0300 From: Jarkko Sakkinen To: Joseph Salisbury Cc: jarkko.sakkinen@linux.intel.com, jason.gunthorpe@obsidianresearch.com, stefanb@linux.vnet.ibm.com, Scot Doyle , peterhuewe@gmx.de, tpmdd@selhorst.net, tpmdd-devel@lists.sourceforge.net, LKML Subject: Re: [v4.0][v4.1][v4.2][Regression] tpm: fix raciness of PPI interface lookup Message-ID: <20150915105332.GA18109@intel.com> References: <55F73DC7.4070007@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <55F73DC7.4070007@canonical.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sorry for the late reply. Looking into this now and sending feedback later today. /Jarkko On Mon, Sep 14, 2015 at 05:36:07PM -0400, Joseph Salisbury wrote: > Hi Jarkko, > > A kernel bug report was opened against Ubuntu [0] and in bugzilla[1]. A > kernel bisect was performed, and it identified the following commit as > the first bad commit: > > commit 0dc553652102c55a43eb1ab52e2049e478469f53 > Author: Jarkko Sakkinen > Date: Fri Dec 12 11:46:35 2014 -0800 > > tpm: fix raciness of PPI interface lookup > > > The regression was introduced as of v4.0-rc1. > > I was hoping to get your feedback, since you are the patch author. Do > you think gathering any additional data will help diagnose this issue, > or would it be best to submit a revert request? An issue with the > revert request is that it would also require reverting several other > commits that came after this commit or a backport of the revert. > > > Thanks, > > Joe > > [0] http://pad.lv/1491467 > [1] https://bugzilla.kernel.org/show_bug.cgi?id=53071 >