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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0BBBC433EF for ; Tue, 5 Apr 2022 05:27:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229701AbiDEF25 (ORCPT ); Tue, 5 Apr 2022 01:28:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50576 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229537AbiDEF24 (ORCPT ); Tue, 5 Apr 2022 01:28:56 -0400 Received: from mail105.syd.optusnet.com.au (mail105.syd.optusnet.com.au [211.29.132.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1944F35272 for ; Mon, 4 Apr 2022 22:26:59 -0700 (PDT) Received: from dread.disaster.area (pa49-180-43-123.pa.nsw.optusnet.com.au [49.180.43.123]) by mail105.syd.optusnet.com.au (Postfix) with ESMTPS id 531C810E567A; Tue, 5 Apr 2022 15:26:58 +1000 (AEST) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1nbbiS-00DwUJ-SN; Tue, 05 Apr 2022 15:26:56 +1000 Date: Tue, 5 Apr 2022 15:26:56 +1000 From: Dave Chinner To: bugzilla-daemon@kernel.org Cc: linux-xfs@vger.kernel.org Subject: Re: [Bug 215804] New: [xfstests generic/670] Unable to handle kernel paging request at virtual address fffffbffff000008 Message-ID: <20220405052656.GV1544202@dread.disaster.area> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Optus-CM-Score: 0 X-Optus-CM-Analysis: v=2.4 cv=e9dl9Yl/ c=1 sm=1 tr=0 ts=624bd322 a=MV6E7+DvwtTitA3W+3A2Lw==:117 a=MV6E7+DvwtTitA3W+3A2Lw==:17 a=9pLDvDoYkmKJyd31:21 a=kj9zAlcOel0A:10 a=z0gMJWrwH1QA:10 a=VwQbUJbxAAAA:8 a=20KFwNOVAAAA:8 a=7-415B0cAAAA:8 a=QrtX6K2Hc1lpGlIrNRwA:9 a=CjuIK1q_8ugA:10 a=n7drqJQfYvJZ14RCwtyM:22 a=AjGcO6oz07-iQ99wixmX:22 a=biEYGPWJfzWAr4FL6Ov7:22 Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org Hi Zorro, On Tue, Apr 05, 2022 at 04:44:35AM +0000, bugzilla-daemon@kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=215804 > > Bug ID: 215804 > Summary: [xfstests generic/670] Unable to handle kernel paging > request at virtual address fffffbffff000008 > Product: File System > Version: 2.5 > Kernel Version: xfs-5.18-merge-4 > Hardware: All > OS: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: XFS > Assignee: filesystem_xfs@kernel-bugs.kernel.org > Reporter: zlang@redhat.com > Regression: No > > xfstests generic/670 hit a panic[1] on 64k directory block size XFS (mkfs.xfs > -n size=65536 -m rmapbt=1 -b size=1024): ..... > [37285.246770] Call trace: > [37285.246952] __split_huge_pmd+0x1d8/0x34c > [37285.247246] split_huge_pmd_address+0x10c/0x1a0 > [37285.247577] try_to_unmap_one+0xb64/0x125c > [37285.247878] rmap_walk_file+0x1dc/0x4b0 > [37285.248159] try_to_unmap+0x134/0x16c > [37285.248427] split_huge_page_to_list+0x5ec/0xcbc > [37285.248763] truncate_inode_partial_folio+0x194/0x2ec > [37285.249128] truncate_inode_pages_range+0x2e8/0x870 > [37285.249483] truncate_pagecache_range+0xa0/0xc0 That doesn't look like an XFS regression, more likely a bug in the new large folios in the page cache feature. Can you revert commit 6795801366da ("xfs: Support large folios") and see if the problem goes away? Cheers, Dave. -- Dave Chinner david@fromorbit.com