From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933623AbdKGIkw (ORCPT ); Tue, 7 Nov 2017 03:40:52 -0500 Received: from mail-wm0-f43.google.com ([74.125.82.43]:54997 "EHLO mail-wm0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932219AbdKGIkt (ORCPT ); Tue, 7 Nov 2017 03:40:49 -0500 X-Google-Smtp-Source: ABhQp+RM+aaZpokZ+OfKsvsrz//38o2bGdSD6qWwLUIzHfW4uy+AS4AUFVlN/b0pIx3HJF5YUWeJOA== Date: Tue, 7 Nov 2017 11:40:45 +0300 From: "Kirill A. Shutemov" To: Corentin Labbe Cc: linux-mm@kvack.org, kirill.shutemov@linux.intel.com, akpm@linux-foundation.org, mhocko@suse.com, vbabka@suse.cz, yasu.isimatu@gmail.com, richard.weiyang@gmail.com, gregkh@linuxfoundation.org, dave.hansen@linux.intel.com, linux-kernel@vger.kernel.org Subject: Re: UBSAN: Undefined behaviour in mm/sparse.c:81:17 Message-ID: <20171107084045.clzrn32pvsw4jthi@node.shutemov.name> References: <20171105125733.GA17434@Red> <20171106192759.GA29097@Red> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171106192759.GA29097@Red> 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 Mon, Nov 06, 2017 at 08:27:59PM +0100, Corentin Labbe wrote: > Hello > > Disabling UBSAN, does not change anything (NULL ptr dereference). > Reverting 83e3c48729d9ebb7af5a31a504f3fd6aff0348c4 ("mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y") made the boot progress further. > > Regards > > PS: I have added more "TO" people according to get_maintainer.pl mm/sparse.c > See http://lkml.kernel.org/r/20171107083337.89952-1-kirill.shutemov@linux.intel.com -- Kirill A. Shutemov