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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 3B701C2BA15 for ; Sat, 4 Apr 2020 22:29:22 +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 93FE9206CC for ; Sat, 4 Apr 2020 22:29:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 93FE9206CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com 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 48vs0v1qxfzDrdM for ; Sun, 5 Apr 2020 08:29:19 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com (client-ip=209.85.166.72; helo=mail-io1-f72.google.com; envelope-from=3caajxgkbajsntuf5gg9m5kkd8.bjjbg9pn9m7jio9io.7jh@m3kw2wvrgufz5godrsrytgd7.apphosting.bounces.google.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=syzkaller.appspotmail.com Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 48vrfH1H6WzDqR0 for ; Sun, 5 Apr 2020 08:13:06 +1000 (AEST) Received: by mail-io1-f72.google.com with SMTP id s1so1783825iow.18 for ; Sat, 04 Apr 2020 15:13:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=bt/1x8EyTmuUIcBDvOOh7SgGrhssirnD/BYB/4tXepA=; b=agSnaOp0CP71HiMPIPAbSXY5T/vjfZ3ury/XCWAdjPvHxxtbJfT4Tqgn/3YdjVVNqm 0K3S09wHF7YYjY3razurNeCZy2K/+AAdBy+r06eYiucxBNbzaGR71VxC7rv64f7/Wtid PFq9+nAR8Nqb2abKQ/0+14HYkSFgqRYyOl/gi0Z6TLBoKq10RhTPHn6O/BP+pg19rq1P a+rY5QSdqLbIzZZLhAhLikq1uWoTV+hYbzajUrq5/j81jReP57PTHmI5DpAAEz1U881x BB4AS19ZeJia2GeRfEpFtd5sZWMqsI9Z/DYErVLPEUcO09lGqzx7CEqKcmT/97lG7t26 IwbA== X-Gm-Message-State: AGi0PubK9LYNYJDIUK4ChDN+Y9Y4M46m0UkUzTf/vtyIDiRJoQMAd5Ug Yrb+c8KC7Q1Gqzlwhwu909RS2AUWr0fqE4iaOfeyX6POriMG X-Google-Smtp-Source: APiQypKcRyVBeoiDWCvZb7tswqkam9aNeXGh+t+Ou4uEcCLuNQD/97y44iDElTiQg68XVts3nXfySRjVZo8xHnjk4aisV+oXHT50 MIME-Version: 1.0 X-Received: by 2002:a92:8183:: with SMTP id q3mr14989618ilk.43.1586038384055; Sat, 04 Apr 2020 15:13:04 -0700 (PDT) Date: Sat, 04 Apr 2020 15:13:04 -0700 In-Reply-To: <20200404183707.GK45598@mit.edu> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007b5aea05a27e5637@google.com> Subject: Re: WARNING in ext4_da_update_reserve_space From: syzbot To: 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, tytso@mit.edu Content-Type: text/plain; charset="UTF-8" X-Mailman-Approved-At: Sun, 05 Apr 2020 08:28:01 +1000 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: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+67e4f16db666b1c8253c@syzkaller.appspotmail.com Tested on: commit: 54d3adbc ext4: save all error info in save_error_info() an.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev kernel config: https://syzkaller.appspot.com/x/.config?x=4527d1e2fb19fd5c dashboard link: https://syzkaller.appspot.com/bug?extid=67e4f16db666b1c8253c compiler: gcc (GCC) 9.0.0 20181231 (experimental) Note: testing is done by a robot and is best-effort only.