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 6F3E6C2BA15 for ; Sat, 4 Apr 2020 18:43:58 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DC4D9206F7 for ; Sat, 4 Apr 2020 18:43:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DC4D9206F7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mit.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 48vm0p63RSzDrQl for ; Sun, 5 Apr 2020 04:43:54 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=mit.edu (client-ip=18.9.28.11; helo=outgoing.mit.edu; envelope-from=tytso@mit.edu; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=mit.edu X-Greylist: delayed 202 seconds by postgrey-1.36 at bilbo; Sun, 05 Apr 2020 04:40:57 AEST Received: from outgoing.mit.edu (outgoing-auth-1.mit.edu [18.9.28.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48vlxP5MS1zDrVM for ; Sun, 5 Apr 2020 04:40:57 +1000 (AEST) 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 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> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mareklindner@neomailbox.ch, sw@simonwunderlich.de, muriloo@linux.ibm.com, a@unstable.cc, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, b.a.t.m.a.n@diktynna.open-mesh.org, netdev@vger.kernel.org, adilger.kernel@dilger.ca, paulus@samba.org, linux-ext4@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, davem@davemloft.net Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" #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