From: Theodore Tso Subject: Re: kernel BUG at fs/ext/super.c:428 Date: Wed, 14 Jan 2009 16:20:38 -0500 Message-ID: <20090114212038.GJ6222@mit.edu> References: <20090110003645.GA16107@linux-os.sc.intel.com> <20090113164842.c6aa7095.akpm@linux-foundation.org> <20090114014434.GE14730@mit.edu> <496D526D.1010402@linux.intel.com> <20090114044059.GA6222@mit.edu> <20090114191632.GA13114@linux-os.sc.intel.com> <1231961377.14825.51.camel@laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Pallipadi, Venkatesh" , Arjan van de Ven , Andrew Morton , linux-kernel@vger.kernel.org, linux-ext4@vger.kernel.org, Ingo Molnar , Nick Piggin To: Peter Zijlstra Return-path: Received: from BISCAYNE-ONE-STATION.MIT.EDU ([18.7.7.80]:46803 "EHLO biscayne-one-station.mit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754273AbZANVWa (ORCPT ); Wed, 14 Jan 2009 16:22:30 -0500 Content-Disposition: inline In-Reply-To: <1231961377.14825.51.camel@laptop> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Jan 14, 2009 at 08:29:37PM +0100, Peter Zijlstra wrote: > > 38d47c1b7075bd7ec3881141bb3629da58f88dab is first bad commit > > commit 38d47c1b7075bd7ec3881141bb3629da58f88dab > > Author: Peter Zijlstra > > Date: Fri Sep 26 19:32:20 2008 +0200 > > > > futex: rely on get_user_pages() for shared futexes > > > > On the way of getting rid of the mmap_sem requirement for shared futexes, > > start by relying on get_user_pages(). > > > > Signed-off-by: Peter Zijlstra > > Acked-by: Nick Piggin > > Signed-off-by: Ingo Molnar > > > However does a futex change make ext3 crap its pants? I agree, this doesn't make much sense. I've looked at the patch, and I don't see how this would cause an ext3 orphaned-inode list handling problem Are you sure the bisect was done correctly? Have you tried reverting that one commit, or otherwise conclusively shown that a kernel with this commit fails, and one without this commit works just fine? - Ted