From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751709Ab3LLAYf (ORCPT ); Wed, 11 Dec 2013 19:24:35 -0500 Received: from mga01.intel.com ([192.55.52.88]:43668 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751507Ab3LLAYd (ORCPT ); Wed, 11 Dec 2013 19:24:33 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,874,1378882800"; d="scan'208";a="448649115" From: "Kirill A. Shutemov" To: Dave Jones , akpm@linux-foundation.org Cc: Vlastimil Babka , Linux Kernel , linux-mm@kvack.org, kirill.shutemov@linux.intel.com, Sasha Levin In-Reply-To: <20131211163809.GA26342@redhat.com> References: <20131206210254.GA7962@redhat.com> <52A8877A.10209@suse.cz> <20131211163809.GA26342@redhat.com> Subject: Re: oops in pgtable_trans_huge_withdraw Content-Transfer-Encoding: 7bit Message-Id: <20131212002422.98262E0090@blue.fi.intel.com> Date: Thu, 12 Dec 2013 02:24:22 +0200 (EET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dave Jones wrote: > On Wed, Dec 11, 2013 at 04:40:42PM +0100, Vlastimil Babka wrote: > > On 12/06/2013 10:02 PM, Dave Jones wrote: > > > I've spent a few days enhancing trinity's use of mmap's, trying to make it > > > reproduce https://lkml.org/lkml/2013/12/4/499 > > > > FYI, I managed to reproduce that using trinity today, > > trinity was from git at commit e8912cc which is from Dec 09 so I guess > > your enhancements were already there? > > yep, everything I had pending is in HEAD now. > > > kernel was linux-next-20131209 > > I was running trinity -c mmap -c munmap -c mremap -c remap_file_pages -c > > mlock -c munlock > > A shorthand for all those -c's is '-G vm'. (Though there might be a couple > extra syscalls in the list too, madvise, mprotect etc). > > > Now I'm running with Kirill's patch, will post results later. > > Seemed to fix it for me, I've not reproduced that particular bug since applying it. > Kirill, is that on its way to Linus soon ? It's in -mm tree for a week already. Andrew, could you push it to Linus? More people steps on the bug. -- Kirill A. Shutemov