From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2104533-1516294137-2-15471427560988166255 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='us-ascii' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-usb-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1516294136; b=VCSZOl0PcoI7O9tJPnJa6fbCVfxI9Vf0e7xP/4sTacHM68K aNa4OwrQ0KZjSX7r9axhtqvOTMXi1Mlja8obxwKMEqv3a4sU+PT1NdxVZH2AT8MM S7rl05ECun3DjAJMe8apJuPsaXwHXueiZRjqyP2AW7cdNNn/NLzv4nNPtHh4vRij skBTZvyGrbhhl143OiXVNVD3ZvK00x/5rAZhaRgRKjFO1SV6tPAnYnNEQ6kHJTU0 FKcCFOsqjaGlSiVONRt3kIwgLasJuPZrMK+2HUhmkPAvqJhI8wzkTzgH8vqs0lwy OuI4v2mPFwEqMjbAQmPHFI2gr2Yd6gTA7S3QVLg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:subject:message-id :references:mime-version:content-type:in-reply-to:sender :list-id; s=arctest; t=1516294136; bh=Iyce6F6fu2I2m18pHPWdLEzMpy dPOcNxiV0PBnKph/8=; b=AI5m6cNGz6Gy0wefFynWWDNFZ7ry+qpfiJBdchGhDg Pzuxef/XKgi03rbbQn6vcmr7LacDRfuCBAUSRfWwYBuofa0FgqsLIuXNf6J4f02a kNhloS8i6RKDFlYGIG8izmH009mOBVSvL76HP/Y/Sobt6vWFnVIdv/QJeA2a1dTh PT2oJC7NfJfl5Wu4E3dfOMcJbUWRhrzyNc3zTfL52fcEj57WhmXV3NWA/gaKpTQX 0S9a9Dq0PnudK0RaB5VXXx7scbF9ngvCgB4J9Ax0LypDCtxmp0oT4HTZ5kjVa2CV OsYUqSL8r8zCRlobCXMqVtHsDkjJ32ZcfwGcDclzBr/w== ARC-Authentication-Results: i=1; mx6.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered; 2048-bit rsa key sha256) header.d=infradead.org header.i=@infradead.org header.b=g7zAvEbC x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=bombadil.20170209; dmarc=none (p=none,has-list-id=yes,d=none) header.from=infradead.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=infradead.org header.result=pass header_is_org_domain=yes Authentication-Results: mx6.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered; 2048-bit rsa key sha256) header.d=infradead.org header.i=@infradead.org header.b=g7zAvEbC x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=bombadil.20170209; dmarc=none (p=none,has-list-id=yes,d=none) header.from=infradead.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=infradead.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932483AbeARQsv (ORCPT ); Thu, 18 Jan 2018 11:48:51 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:47981 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755377AbeARQsp (ORCPT ); Thu, 18 Jan 2018 11:48:45 -0500 Date: Thu, 18 Jan 2018 08:48:43 -0800 From: Matthew Wilcox To: dsterba@suse.cz, linux-kernel@vger.kernel.org, Matthew Wilcox , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org, linux-usb@vger.kernel.org, Bjorn Andersson , Stefano Stabellini , iommu@lists.linux-foundation.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, intel-gfx@lists.freedesktop.org, cgroups@vger.kernel.org, linux-sh@vger.kernel.org, David Howells Subject: Re: [PATCH v6 00/99] XArray version 6 Message-ID: <20180118164843.GA23800@bombadil.infradead.org> References: <20180117202203.19756-1-willy@infradead.org> <20180118160749.GP13726@twin.jikos.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180118160749.GP13726@twin.jikos.cz> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Thu, Jan 18, 2018 at 05:07:50PM +0100, David Sterba wrote: > On Wed, Jan 17, 2018 at 12:20:24PM -0800, Matthew Wilcox wrote: > > From: Matthew Wilcox > > > > This version of the XArray has no known bugs. > > I've booted this patchset on 2 boxes, both had random problems during > boot. On one I was not able to diagnose what went wrong. On the other > one the system booted up to userspace and failed to set up networking. > Serial console worked and the network service complained about wrong > format of /usr/share/wicked/schema/team.xml . That's supposed to be a > text file, though hexdump showed me lots of zeros. Trimmed output: > > 00000000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > (similar output here) > * > 00000a10 00 00 00 00 00 00 00 00 11 03 00 00 00 00 00 00 |................| > 00000a20 20 8b 7f 01 00 00 00 00 a0 84 7d 01 00 00 00 00 | .........}.....| > 00000a30 00 00 00 00 00 00 00 00 10 89 7f 01 00 00 00 00 |................| > 00000a40 a0 84 7d 01 00 00 00 00 00 00 00 00 00 00 00 00 |..}.............| > 00000a50 80 8a 7f 01 00 00 00 00 e0 cf 7d 01 00 00 00 00 |..........}.....| > 00000a60 00 00 00 00 00 00 00 00 60 8a 7f 01 00 00 00 00 |........`.......| > 00000a70 a0 84 7d 01 00 00 00 00 00 00 00 00 00 00 00 00 |..}.............| > 00000a80 30 89 7f 01 00 00 00 00 a0 84 7d 01 00 00 00 00 |0.........}.....| > 00000a90 00 00 00 00 00 00 00 00 60 f2 7f 01 00 00 00 00 |........`.......| > 00000aa0 40 fd 7e 01 00 00 00 00 00 00 00 00 00 00 00 00 |@.~.............| > 00000ab0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00001000 3e 0a 20 20 3c 2f 6d 65 74 68 6f 64 3e 0a 3c 2f |>. . 00001010 73 65 72 76 69 63 65 3e 0a |service>.| > > There's something at the end of the file that does look like a xml fragment. > The file size is 4121. This looks to me like exactly the first page of the file > was not read correctly. > > The xml file is supposed to be read-only during startup, so there was no write > in flight. 'rpm -Vv' reported only this file corrupted. Booting to other > kernels was fine, network up, and the file was ok again. So the > corruption happened only in memory, which leads me to conclusion that > there is an unknown bug in your patchset. Thank you! I shall attempt to debug. Was this with a btrfs root filesystem? I'm most suspicious of those patches right now, since they've received next to no testing. I'm going to put together a smaller patchset which just does the page cache conversion and nothing else in the hope that we can get that merged this year.