From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756060AbaGaCkV (ORCPT ); Wed, 30 Jul 2014 22:40:21 -0400 Received: from mga11.intel.com ([192.55.52.93]:5591 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754477AbaGaCkT (ORCPT ); Wed, 30 Jul 2014 22:40:19 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.01,769,1400050800"; d="scan'208";a="569752071" Date: Thu, 31 Jul 2014 10:40:14 +0800 From: Fengguang Wu To: Alexei Starovoitov Cc: David Rientjes , Christoph Hellwig , Al Viro , Jet Chen , Su Tao , Yuanhan Liu , LKP , linux-fsdevel@vger.kernel.org, "linux-kernel@vger.kernel.org" Subject: Re: [delayed_fput] BUG: unable to handle kernel paging request at ffff8800122a0ad0 Message-ID: <20140731024014.GA10184@localhost> References: <20140730035541.GD16537@localhost> <20140730111521.GB759@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: 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 On Wed, Jul 30, 2014 at 04:00:58PM -0700, Alexei Starovoitov wrote: > On Wed, Jul 30, 2014 at 3:51 PM, David Rientjes wrote: > > On Wed, 30 Jul 2014, Christoph Hellwig wrote: > > > >> On Wed, Jul 30, 2014 at 11:55:41AM +0800, Fengguang Wu wrote: > >> > Greetings, > >> > > >> > 0day kernel testing robot got the below dmesg and the first bad commit is > >> > >> How does this manage to trip over a 2 year old commit now? > > may be because all kernels are built with gcc 4.8.2 ? > Fengguang, did you recently switch to new compiler? > I think all older builds were with 4.6.3 Alexei, I've been using gcc 4.8.2 for 4 months. Maybe it's because I test new randconfigs every day. And the problem may only show up with very specific kernel config? Thanks, Fengguang > > I think there's something weird going on with the testing of CONFIG_SLOB, > > same as http://permalink.gmane.org/gmane.linux.kernel/1759314 that > > identified a harmless commit that only initializes a field of > > struct mm_struct and then ended up exploded in slob freeing. > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/