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 X-Spam-Level: X-Spam-Status: No, score=-7.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A69FC3A5A2 for ; Fri, 23 Aug 2019 15:38:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3B75F2339D for ; Fri, 23 Aug 2019 15:38:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566574688; bh=VA1ZiaQZX4KwPmP2agYkzSplsL+J6b11+mfxePrt3jk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=R7AkliO8O3Nq4GzyhEh5/8hwnJIds3LCWpbsQu0DjgnhiifbVEbS6t6jDBbqh92ns +Z7MGaPcVzozEi0mcLrF60Lr28cJqdNBYCpIXC0aqnGrMGtGmObaxGL5Ut2ZIlyu4a omuWbiVOgP01/BmQrwZc+3q73dBBE/PGtujQp2co= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405862AbfHWPiH (ORCPT ); Fri, 23 Aug 2019 11:38:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:53500 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726964AbfHWPiH (ORCPT ); Fri, 23 Aug 2019 11:38:07 -0400 Received: from localhost (unknown [12.236.144.82]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9733121726; Fri, 23 Aug 2019 15:38:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566574686; bh=VA1ZiaQZX4KwPmP2agYkzSplsL+J6b11+mfxePrt3jk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=i3831KWdpPley/W5ozTytDpqX07vK78qPizycnS7u2yOvy9EG5bDkqDtLrDJztyY4 fINHp195FnOPw16A0Z5Jh8KNMYnm/FZJ09cXFDPE7LXZR07CJ2R3to8qVl3/xDd5us LL51jfxgB7/9cfdJ6ycCYCA85hI1/n+2A+nJ6drM= Date: Fri, 23 Aug 2019 11:38:05 -0400 From: Sasha Levin To: Jan Stancek Cc: Greg KH , CKI Project , Linux Stable maillist , Memory Management , Xiong Zhou Subject: Re: =?utf-8?B?4p2MIEZBSUw=?= =?utf-8?Q?=3A?= Stable queue: queue-5.2 Message-ID: <20190823153805.GD1581@sasha-vm> References: <20190822233717.GA24034@kroah.com> <900819847.7915389.1566543455477.JavaMail.zimbra@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <900819847.7915389.1566543455477.JavaMail.zimbra@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Fri, Aug 23, 2019 at 02:57:35AM -0400, Jan Stancek wrote: > > >----- Original Message ----- >> On Thu, Aug 22, 2019 at 06:48:50PM -0400, CKI Project wrote: >> > >> > Hello, >> > >> > We ran automated tests on a patchset that was proposed for merging into >> > this >> > kernel tree. The patches were applied to: >> > >> > Kernel repo: >> > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git >> > Commit: aad39e30fb9e - Linux 5.2.9 >> > >> > The results of these automated tests are provided below. >> > >> > Overall result: FAILED (see details below) >> > Merge: OK >> > Compile: OK >> > Tests: FAILED >> > >> > All kernel binaries, config files, and logs are available for download >> > here: >> > >> > https://artifacts.cki-project.org/pipelines/116984 >> > >> > >> > >> > One or more kernel tests failed: >> > >> > aarch64: >> > ❌ LTP lite >> > ❌ Loopdev Sanity >> >> Odd, what suddenly broke? No new patches had been added to the queue >> since Tuesday, except I removed a single patch. Removing a patch >> shouldn't break anything, right? > >It's a race: > [ 1289.578972] LTP: starting mtest06 ( mmap1) > ... > [ 1455.794564] kernel BUG at mm/filemap.c:171! > >Here's a verbose description: > https://lore.kernel.org/lkml/50b8914e20d1d62bb2dee42d342836c2c16ebee7.1563438048.git.jstancek@redhat.com/ > >Final (less verbose) patch: > e1b98fa31664 ("locking/rwsem: Add missing ACQUIRE to read_slowpath exit when queue is empty") > >Code review found also this issue, which is theoretical and very unlikely, but it's a small patch: > 99143f82a255 ("lcoking/rwsem: Add missing ACQUIRE to read_slowpath sleep loop") Okay, so this is not a new regression in 5.2 but rather something that we just ended up hitting now. We can queue up the fixes for the next release. -- Thanks, Sasha