From: "Pallipadi, Venkatesh" Subject: Re: kernel BUG at fs/ext/super.c:428 Date: Wed, 14 Jan 2009 11:48:39 -0800 Message-ID: <20090114194838.GB18436@linux-os.sc.intel.com> 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> <20090114193844.GA18436@linux-os.sc.intel.com> <1231962169.14825.54.camel@laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "Pallipadi, Venkatesh" , Theodore Tso , 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 mga11.intel.com ([192.55.52.93]:43441 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752237AbZANTst (ORCPT ); Wed, 14 Jan 2009 14:48:49 -0500 Content-Disposition: inline In-Reply-To: <1231962169.14825.54.camel@laptop> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Jan 14, 2009 at 11:42:49AM -0800, Peter Zijlstra wrote: > On Wed, 2009-01-14 at 11:38 -0800, Pallipadi, Venkatesh wrote: > > > > > Below is the result of full bisect > > > > > futex: rely on get_user_pages() for shared futexes > > > > However does a futex change make ext3 crap its pants? > > > > > > Is there anything more to it than start the machine, and reboot? > > > > Just system startup and reboot is enough to reproduce the problem. And 100% > > reproducible. So, does seem to be any timing involved either. > > That's very odd indeed, non of my test systems nor Ingo's ever triggered > this, and that patch has been in -tip for a rather long time. > > CommitDate: Tue Sep 30 12:35:20 2008 +0200 > > That's 3.5 months of test time.. most curious. What kind of userland do > you have that triggers this? > This is a Core 2 (X5460) DP server system with SuSE SLES 10 installation. I have 3 ext3 partitions mounted; root, home and my own masterboot that I use to switch between different OS installations.