From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752101AbbINVgN (ORCPT ); Mon, 14 Sep 2015 17:36:13 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:34093 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751848AbbINVgM convert rfc822-to-8bit (ORCPT ); Mon, 14 Sep 2015 17:36:12 -0400 Message-ID: <55F73DC7.4070007@canonical.com> Date: Mon, 14 Sep 2015 17:36:07 -0400 From: Joseph Salisbury User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0 MIME-Version: 1.0 To: jarkko.sakkinen@linux.intel.com CC: jason.gunthorpe@obsidianresearch.com, stefanb@linux.vnet.ibm.com, Scot Doyle , peterhuewe@gmx.de, tpmdd@selhorst.net, tpmdd-devel@lists.sourceforge.net, LKML Subject: [v4.0][v4.1][v4.2][Regression] tpm: fix raciness of PPI interface lookup Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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