From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755936AbaCNUqn (ORCPT ); Fri, 14 Mar 2014 16:46:43 -0400 Received: from youngberry.canonical.com ([91.189.89.112]:45289 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753707AbaCNUqm (ORCPT ); Fri, 14 Mar 2014 16:46:42 -0400 Message-ID: <53236AA2.7030105@canonical.com> Date: Fri, 14 Mar 2014 16:46:26 -0400 From: Joseph Salisbury User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: penguin-kernel@I-love.SAKURA.ne.jp CC: Oleg Nesterov , rientjes@google.com, akpm@linux-foundation.org, Linus Torvalds , tj@kernel.org, Thomas Gleixner , LKML , Kernel Team Subject: [v3.13][v3.14][Regression] kthread: make kthread_create() killable Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Tetsuo, A kernel bug report was opened against Ubuntu[0]. We performed a kernel bisect, and found that reverting the following commit resolved this bug: commit 786235eeba0e1e85e5cbbb9f97d1087ad03dfa21 Author: Tetsuo Handa Date: Tue Nov 12 15:06:45 2013 -0800 kthread: make kthread_create() killable The regression was introduced as of v3.13-rc1. The bug indicates an issue with the SAS controller during initialization, which prevents the system from booting. Additional details are available in the bug report or on request. 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? Thanks, Joe [0] http://pad.lv/1276705