From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wg0-f52.google.com (mail-wg0-f52.google.com [74.125.82.52]) by kanga.kvack.org (Postfix) with ESMTP id 185FB6B0032 for ; Wed, 25 Feb 2015 15:21:37 -0500 (EST) Received: by wgha1 with SMTP id a1so6030658wgh.5 for ; Wed, 25 Feb 2015 12:21:36 -0800 (PST) Received: from jenni1.inet.fi (mta-out1.inet.fi. [62.71.2.195]) by mx.google.com with ESMTP id g4si31080867wie.103.2015.02.25.12.21.35 for ; Wed, 25 Feb 2015 12:21:35 -0800 (PST) Date: Wed, 25 Feb 2015 22:21:30 +0200 From: "Kirill A. Shutemov" Subject: Re: 4.0-rc1/PARISC: BUG: non-zero nr_pmds on freeing mm Message-ID: <20150225202130.GA31491@node.dhcp.inet.fi> References: <20150224225454.GA14117@fuloong-minipc.musicnaut.iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150224225454.GA14117@fuloong-minipc.musicnaut.iki.fi> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Aaro Koskinen Cc: "Kirill A. Shutemov" , linux-parisc@vger.kernel.org, linux-mm@kvack.org On Wed, Feb 25, 2015 at 12:54:54AM +0200, Aaro Koskinen wrote: > Hi, > > Here's a kernel config to reproduce the issue (no special steps needed, > just boot to userspace), and bootlog after that: > > # > # Automatically generated file; DO NOT EDIT. > # Linux/parisc 4.0.0-rc1 Kernel Configuration ... > [ 18.940000] BUG: non-zero nr_pmds on freeing mm: -6 It happens due missing __PAGETABLE_PMD_FOLDED in custom page table folding. This has been fixed in CONFIG_PGTABLE_LEVELS patcheset. Andrew, are you going to submit that patchset to Linus in this cycle? If not, I can prepare a patchset which only adds missing __PAGETABLE_PUD_FOLDED and __PAGETABLE_PMD_FOLDED. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org