From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752316AbdF0QmC (ORCPT ); Tue, 27 Jun 2017 12:42:02 -0400 Received: from mail-wm0-f54.google.com ([74.125.82.54]:38787 "EHLO mail-wm0-f54.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751492AbdF0Ql4 (ORCPT ); Tue, 27 Jun 2017 12:41:56 -0400 Date: Tue, 27 Jun 2017 19:41:52 +0300 From: "Kirill A. Shutemov" To: Vlastimil Babka , Naresh Kamboju , valdis.kletnieks@vt.edu Cc: "linux-kernel@vger.kernel.org" , linux-mm@kvack.org, "Kirill A. Shutemov" Subject: Re: next-20170620 BUG in do_page_fault / do_huge_pmd_wp_page Message-ID: <20170627164152.w5awvgpyppex6oa2@node.shutemov.name> References: <20815.1498188418@turing-police.cc.vt.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 27, 2017 at 09:13:31AM +0200, Vlastimil Babka wrote: > +CC Kirill, those 512 numbers smell like THP related. > > On 06/23/2017 07:48 AM, Naresh Kamboju wrote: > > Hi Valdis, > > > > On 23 June 2017 at 08:56, wrote: > >> Saw this at boot of next-20170620. Not sure how I managed to hit 4 BUG in a row... > >> > >> Looked in 'git log -- mm/' but not seeing anything blatantly obvious. > >> > >> This ringing any bells? I'm not in a position to recreate or bisect this until > >> the weekend. > >> > >> [ 315.409076] BUG: Bad rss-counter state mm:ffff8a223deb4640 idx:0 val:-512 > >> [ 315.412889] BUG: Bad rss-counter state mm:ffff8a223deb4640 idx:1 val:512 > >> [ 315.416694] BUG: non-zero nr_ptes on freeing mm: 1 > >> [ 315.436098] BUG: Bad page state in process gdm pfn:3e8400 > >> [ 315.439802] page:ffffe8af0fa10000 count:-1 mapcount:0 mapping: (null) index:0x1 Could you check this helps: http://lkml.kernel.org/r/20170627163734.6js4jkwkwlz6xwir@black.fi.intel.com -- Kirill A. Shutemov