From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753446AbcEYJrp (ORCPT ); Wed, 25 May 2016 05:47:45 -0400 Received: from mga01.intel.com ([192.55.52.88]:9298 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753302AbcEYJro (ORCPT ); Wed, 25 May 2016 05:47:44 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,363,1459839600"; d="scan'208";a="974150035" Date: Wed, 25 May 2016 12:47:34 +0300 From: Mika Westerberg To: Andrea Arcangeli Cc: "Kirill A. Shutemov" , "Kirill A. Shutemov" , linux-kernel@vger.kernel.org Subject: Re: v4.6 kernel BUG at mm/rmap.c:1101! Message-ID: <20160525094734.GJ1789@lahna.fi.intel.com> References: <20160523140638.GA1738@lahna.fi.intel.com> <20160523142459.GA31159@node.shutemov.name> <20160523151855.GB20829@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160523151855.GB20829@redhat.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo User-Agent: Mutt/1.6.1 (2016-04-27) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 23, 2016 at 05:18:55PM +0200, Andrea Arcangeli wrote: > > diff --git a/mm/rmap.c b/mm/rmap.c > > index 8a839935b18c..0ea5d9071b32 100644 > > --- a/mm/rmap.c > > +++ b/mm/rmap.c > > @@ -1098,6 +1098,8 @@ void page_move_anon_rmap(struct page *page, > > > > VM_BUG_ON_PAGE(!PageLocked(page), page); > > VM_BUG_ON_VMA(!anon_vma, vma); > > + if (IS_ENABLED(CONFIG_DEBUG_VM) && PageTransHuge(page)) > > + address &= HPAGE_PMD_MASK; > > VM_BUG_ON_PAGE(page->index != linear_page_index(vma, address), page); > > > > anon_vma = (void *) anon_vma + PAGE_MAPPING_ANON; > > Reviewed-by: Andrea Arcangeli My desktop survived overnight without crash so I guess this is Tested-by: Mika Westerberg Thanks.