Received: by 2002:a25:6193:0:0:0:0:0 with SMTP id v141csp1753552ybb; Sat, 4 Apr 2020 11:38:33 -0700 (PDT) X-Google-Smtp-Source: APiQypKMzSgPxw/tsw90RR3bpNEXTOwaAS1Ll6JrNE9RrqDB7aphZalCxZeDjJDvVdf3Fgjg+D8y X-Received: by 2002:aca:4997:: with SMTP id w145mr7618066oia.58.1586025513010; Sat, 04 Apr 2020 11:38:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1586025513; cv=none; d=google.com; s=arc-20160816; b=fXRtOXpmT4kSd9bGMvZxWEMudjbFyDjkFcKgYMMjykKEjCyFiP9c+ghPsvJro1uFZV 25KhPYELYEksA7i/u7m5Usl4wWhNqB0mHYTUJRkRsG/Sru3EsOwJ9OEriuH83r7IAcVM vXXmDzwS3ng/J9cKrQYqYAyDkj7cu/AICzvpzHE8ZBmRWpPDfidfUh5v4k6mn+J0eEK0 mJPshwk62W5WfLj6XgDQrnHoJinkXEX6ZHcie4P+kf1oRAxCfyTPWT+Po7Lqf6IgtiwV SdU+Ah/HzUYgXP0DdS5QSp23DLW9vkUaYfWlX8BnoqyuZYmzylBJK4BvftEE90S1Be6x vDHA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date; bh=htpChZCd76VchFd8qgp0m5kJhRwBlPR16lyltSfr1oY=; b=y0L/Hml5NuBWVDnyhUco4M5T+glL9EKmwLjeTWWTr4qLVRZB7keKETS8sZuB64KPvk Y0WrAX0kqy0WmP918yGophseUHNgPwt31l1cfGtQYOJYBd9vCco59ANzfsLgJ5UnOe32 E6X5+5zsOt+XCrSk4w1mzaN+r3A8bzcRDRSaFWwf3G7HyskJvi+8kPLc3e9YNHlvUSVF J5GIcruK3IgB2fVItWuABKRDaqgAajSxY940kOhki171NDNxweWW+/i3H7jgHtFRvbKQ zqYO5mxgiPF9F8xHnqNPGKVVchgly0rshhJiCFemyKsv3jzP3Znpe4nOxXq2gn+E1BQi bSeA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id j69si5373516oib.93.2020.04.04.11.38.11; Sat, 04 Apr 2020 11:38:32 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726207AbgDDSiJ (ORCPT + 99 others); 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: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@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