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=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 0F4E4C2BA1A for ; Sat, 4 Apr 2020 18:38:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E338D206F7 for ; Sat, 4 Apr 2020 18:38:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726302AbgDDSiJ (ORCPT ); Sat, 4 Apr 2020 14:38:09 -0400 Received: from outgoing-auth-1.mit.edu ([18.9.28.11]:56297 "EHLO outgoing.mit.edu" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726187AbgDDSiJ (ORCPT ); Sat, 4 Apr 2020 14:38:09 -0400 Received: from callcc.thunk.org (pool-72-93-95-157.bstnma.fios.verizon.net [72.93.95.157]) (authenticated bits=0) (User authenticated as tytso@ATHENA.MIT.EDU) by outgoing.mit.edu (8.14.7/8.12.4) with ESMTP id 034Ib7GU017545 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 4 Apr 2020 14:37:08 -0400 Received: by callcc.thunk.org (Postfix, from userid 15806) id 80DC1420021; Sat, 4 Apr 2020 14:37:07 -0400 (EDT) Date: Sat, 4 Apr 2020 14:37:07 -0400 From: "Theodore Y. Ts'o" To: syzbot Cc: a@unstable.cc, adilger.kernel@dilger.ca, b.a.t.m.a.n@diktynna.open-mesh.org, benh@kernel.crashing.org, davem@davemloft.net, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, mareklindner@neomailbox.ch, mpe@ellerman.id.au, muriloo@linux.ibm.com, netdev@vger.kernel.org, paulus@samba.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com Subject: Re: WARNING in ext4_da_update_reserve_space Message-ID: <20200404183707.GK45598@mit.edu> References: <0000000000008c5a4605a24cbb16@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000008c5a4605a24cbb16@google.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org #syz test https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev I'm curious why this is only showing up as failing on next-next. Let's see if it fails on the ext4.git tree. >From the bisect logs syzbot is able to repro on all of v5.x and v4.20.0. However, I'm not able to repro it using kvm with either v5.6-rc4 or the tip of the ext4 git tree. So let's see what syzbot can do with the tip of the dev tree. - Ted