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=-10.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 5B267C433DF for ; Tue, 11 Aug 2020 14:03:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3511C2076B for ; Tue, 11 Aug 2020 14:03:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728857AbgHKODP (ORCPT ); Tue, 11 Aug 2020 10:03:15 -0400 Received: from mx2.suse.de ([195.135.220.15]:53632 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728516AbgHKODP (ORCPT ); Tue, 11 Aug 2020 10:03:15 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 92157B0A5; Tue, 11 Aug 2020 14:03:34 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 5B948DA83C; Tue, 11 Aug 2020 16:02:12 +0200 (CEST) Date: Tue, 11 Aug 2020 16:02:11 +0200 From: David Sterba To: John Hubbard Cc: Chris Mason , Josef Bacik , David Sterba , linux-btrfs@vger.kernel.org, LKML , linux-fsdevel Subject: Re: btrfs crash in kobject_del while running xfstest Message-ID: <20200811140211.GQ2026@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, John Hubbard , Chris Mason , Josef Bacik , David Sterba , linux-btrfs@vger.kernel.org, LKML , linux-fsdevel References: <200e5b49-5c51-bbe5-de93-c6bd6339bb7f@nvidia.com> <2a3eb48d-6ca1-61c6-20cf-ba2fbda21f45@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2a3eb48d-6ca1-61c6-20cf-ba2fbda21f45@nvidia.com> User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Tue, Aug 11, 2020 at 04:19:47AM -0700, John Hubbard wrote: > Somehow the copy-paste of Chris Mason's name failed (user error > on my end), sorry about that Chris! > > On 8/11/20 4:17 AM, John Hubbard wrote: > > Hi, > > > > Here's an early warning of a possible problem. > > > > I'm seeing a new btrfs crash when running xfstests, as of > > 00e4db51259a5f936fec1424b884f029479d3981 ("Merge tag > > 'perf-tools-2020-08-10' of > > git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux") in linux.git. > > > > This doesn't crash in v5.8, so I attempted to bisect, but ended up with > > the net-next merge commit as the offending one: commit > > 47ec5303d73ea344e84f46660fff693c57641386 ("Merge > > git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next"), which > > doesn't really help because it's 2088 files changed, of course. Thanks for the report, it's already known and patch is on the way to Linus' tree (ETA before rc1). You can apply https://lore.kernel.org/linux-btrfs/20200803062011.17291-1-wqu@suse.com/ locally.