From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B6D3C433EF for ; Tue, 31 May 2022 00:43:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 259786B0072; Mon, 30 May 2022 20:43:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 2087D6B0073; Mon, 30 May 2022 20:43:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0CBA66B0074; Mon, 30 May 2022 20:43:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id F1D8F6B0072 for ; Mon, 30 May 2022 20:43:56 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay13.hostedemail.com (Postfix) with ESMTP id BE498601E0 for ; Tue, 31 May 2022 00:43:56 +0000 (UTC) X-FDA: 79524190872.14.51C83AA Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf22.hostedemail.com (Postfix) with ESMTP id 872F4C0035 for ; Tue, 31 May 2022 00:43:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=g4nJNHLU5acCCvTosby/8yo1t0yRHy/MZiOxGl1UM48=; b=sVc1OZ/LiljEnh5no8p+RB5RsQ o3j1mw58LmBVKAyPdUgcZJt7DDxxEuNvfVySZJ86YgYYRfxEcH//GD3rGsmy4cAADYcoJ3h7SvjFO 09B1uPZocQg8hHGeXmJHGSCFAyrnw09KwZwaE7EdCgTHFJmZbE4iFvJmXsX0R6jHA1ZrW1Mg6N7dx O+CwxOKSbAmbaJ2dgYFoiPUy0OaOQxhtbCbkGIJc0fJAT27mRmdsoBO2MYqMNiJ8RCjZ5+XLghbAp 5Vax+P9IwEAiv4MBHL/nrsti8+4HQoEXhKk1FU/4E5h2ovFDJal3TI0B8IPIg4z5emv5SK+8Eeo2x PTEkCKrw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1nvpzA-004uxC-Jj; Tue, 31 May 2022 00:43:48 +0000 Date: Tue, 31 May 2022 01:43:48 +0100 From: Matthew Wilcox To: Dave Chinner Cc: Zorro Lang , linux-mm@kvack.org, linux-xfs@vger.kernel.org, linux-ext4@vger.kernel.org, nvdimm@lists.linux.dev Subject: Re: Potential regression on kernel 5.19-rc0: kernel BUG at mm/page_table_check.c:51! Message-ID: References: <20220530080616.6h77ppymilyvjqus@zlang-mailbox> <20220530183908.vi7u37a6irji4gnf@zlang-mailbox> <20220530222919.GA1098723@dread.disaster.area> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220530222919.GA1098723@dread.disaster.area> X-Rspamd-Queue-Id: 872F4C0035 X-Stat-Signature: nn33ybuhxqigntt7jjxasq6dwiqn7r6m Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=infradead.org header.s=casper.20170209 header.b="sVc1OZ/L"; dmarc=none; spf=none (imf22.hostedemail.com: domain of willy@infradead.org has no SPF policy when checking 90.155.50.34) smtp.mailfrom=willy@infradead.org X-Rspam-User: X-Rspamd-Server: rspam11 X-HE-Tag: 1653957832-675127 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, May 31, 2022 at 08:29:19AM +1000, Dave Chinner wrote: > On Tue, May 31, 2022 at 02:39:08AM +0800, Zorro Lang wrote: > > It's not a regression *recently* at least, I still can reproduce this bug on > > linux v5.16. > > > > But I found it's related with someone kernel configuration (sorry I haven't > > figured out which one config is). I've upload two kernel config files, one[1] > > can build a kernel which reproduce this bug, the other[2] can't. Hope that > > helps. > > > > Thanks, > > Zorro > > > > [1] > > https://bugzilla.kernel.org/attachment.cgi?id=301076 > > > > [2] > > https://bugzilla.kernel.org/attachment.cgi?id=301077 > > Rather than make anyone looking at this download multiple files and > run diff, perhaps you could just post the output of 'diff -u > config.good config.bad'? You guys know about tools/testing/ktest/config-bisect.pl right?