From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755149AbbHGHQP (ORCPT ); Fri, 7 Aug 2015 03:16:15 -0400 Received: from mail-pa0-f54.google.com ([209.85.220.54]:34104 "EHLO mail-pa0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754544AbbHGHQN (ORCPT ); Fri, 7 Aug 2015 03:16:13 -0400 Date: Fri, 7 Aug 2015 12:45:53 +0530 From: Sudip Mukherjee To: Greg Kroah-Hartman Cc: kernel test robot , David Kershner , lkp@01.org, LKML Subject: Re: [lkp] [staging] 68905a14e49: kernel BUG at drivers/base/driver.c:153! Message-ID: <20150807071553.GA28337@sudip-pc> References: <87vbczy4m2.fsf@yhuang-dev.intel.com> <20150807022812.GI25067@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150807022812.GI25067@kroah.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 Thu, Aug 06, 2015 at 07:28:12PM -0700, Greg Kroah-Hartman wrote: > > > On Sat, Aug 01, 2015 at 01:12:05PM +0800, kernel test robot wrote: > > [ 12.276231] RIP > > [ 12.276231] RIP [] driver_register+0xa8/0xe0 > > [] driver_register+0xa8/0xe0 > > [ 12.276231] RSP > > [ 12.276231] RSP > > [ 12.403330] ---[ end trace 075c805d53b02836 ]--- > > [ 12.403330] ---[ end trace 075c805d53b02836 ]--- > > David, any ideas of what needs to be done to fix this? Hi Greg, I was having a quick look and it looks like visorchipset is not yet initialised and the bus is not yet registered. If you remember we had a loooong discussion in another thread "usb: ulpi: don't register drivers if bus doesn't exist", I sent a proposed patch also. For your reference: "http://www.spinics.net/lists/linux-usb/msg125368.html". I think this one is the perfect example of that case here. regards sudip