From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755483Ab3K2WWj (ORCPT ); Fri, 29 Nov 2013 17:22:39 -0500 Received: from mail-qa0-f49.google.com ([209.85.216.49]:34695 "EHLO mail-qa0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751964Ab3K2WWi (ORCPT ); Fri, 29 Nov 2013 17:22:38 -0500 Date: Fri, 29 Nov 2013 17:22:35 -0500 From: Tejun Heo To: Yuanhan Liu Cc: linux-kernel@vger.kernel.org, Fengguang Wu Subject: Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000098 Message-ID: <20131129222235.GJ21755@mtj.dyndns.org> References: <20131126092152.GF17626@yliu-dev.sh.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131126092152.GF17626@yliu-dev.sh.intel.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 26, 2013 at 05:21:52PM +0800, Yuanhan Liu wrote: > Greetings, > > I got the below dmesg and the first bad commit is > > commit 98de48a0e011f2ef497a0f0c40b79169198cf797 > Author: Tejun Heo > AuthorDate: Sat Nov 23 18:01:54 2013 -0500 > Commit: Tejun Heo > CommitDate: Sat Nov 23 18:01:54 2013 -0500 > > sysfs, kernfs: make sysfs_dirent definition public ... > [ 0.372911] BUG: unable to handle kernel NULL pointer dereference at 0000000000000098 > [ 0.374091] IP: [] kobject_add_internal+0x1cb/0x6c0 This was from the patch incorrectly replacing dummy noop implementation for !CONFIG_SYSFS with the actual implementation. Updated patches posted. Thank you very much! -- tejun