From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992589AbXCBQ3c (ORCPT ); Fri, 2 Mar 2007 11:29:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S2992584AbXCBQ3c (ORCPT ); Fri, 2 Mar 2007 11:29:32 -0500 Received: from e33.co.us.ibm.com ([32.97.110.151]:54452 "EHLO e33.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2992589AbXCBQ3b (ORCPT ); Fri, 2 Mar 2007 11:29:31 -0500 Subject: Re: Kernel Oops with shm namespace cleanups From: Adam Litke To: Bill Irwin Cc: linux-kernel , "Eric W. Biederman" , akpm@linux-foundation.org In-Reply-To: <20070302000808.GE10643@holomorphy.com> References: <1172693610.12805.16.camel@localhost.localdomain> <20070302000808.GE10643@holomorphy.com> Content-Type: text/plain Date: Fri, 02 Mar 2007 10:29:16 -0600 Message-Id: <1172852957.12220.4.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.8.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2007-03-01 at 16:08 -0800, Bill Irwin wrote: > On Wed, Feb 28, 2007 at 02:13:29PM -0600, Adam Litke wrote: > > Hey. While testing 2.6.21-rc2 with libhugetlbfs, the shm-fork test case > > causes the kernel to oops. To reproduce: Execute 'make check' in the > > latest libhugetlbfs source on a 2.6.21-rc2 kernel with 100 huge pages > > allocated. Using fewer huge pages will likely also trigger the oops. > > Libhugetlbfs can be downloaded from: > > http://libhugetlbfs.ozlabs.org/snapshots/libhugetlbfs-dev-20070228.tar.gz > > Looks like I should grab these testcases for the sake of due diligence > (not to say I intend to alter maintenance style from primarily review, > approval, and bugfixing, not that I've been doing as much of any of those > as I should). To which architectures and/or distributions have the > userspace bits been ported, or otherwise run/tested on? A quick sniff > test on an Altix suggests SLES and/or ia64 may trip up the scripts: Right now we support x86, powerpc, and x86_64. Segment remapping and hugetlb malloc won't work on ia64 until long format vhpt is supported (I suspect). But the test framework should be adaptable to other architectures. -- Adam Litke - (agl at us.ibm.com) IBM Linux Technology Center