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 autolearn=ham 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 A0B1DC43603 for ; Sun, 15 Dec 2019 06:52:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 70D12206D7 for ; Sun, 15 Dec 2019 06:52:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725837AbfLOGwB (ORCPT ); Sun, 15 Dec 2019 01:52:01 -0500 Received: from mail-io1-f71.google.com ([209.85.166.71]:54947 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725788AbfLOGwB (ORCPT ); Sun, 15 Dec 2019 01:52:01 -0500 Received: by mail-io1-f71.google.com with SMTP id a22so3265689iol.21 for ; Sat, 14 Dec 2019 22:52:01 -0800 (PST) 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=u5G1wrWjpZdsvluOyjyhr3hFBI3eS6YddfcUNsAZMTM=; b=OpViazhWYf3iCPmUM3GBXyb8NohNwm6cenZmS2zZ9IwUrU5KYFhHHWxM+eNFAyi9CI bcepCBAuvk0BpU0p0oUn3lWyVi8jkSFd1zeGw3qc6QdK4AjjQF5MQGPx0623LMGtoC4C N+PEecwgT+/t4lwDg/XKll5r/SQpPud/ctViyGjb8Z5sKpd4JGuhPHD0LJ63zoSeWoNS aIqYP4oh8elAaGcn4zDhXt//9CHoVYbKkw72YLM+eytEpOnjz4Lqpmzz9ISEapOGNNdZ U6UsfiPRs0gGee8OOmCtbkthFDc0jH9i7U4gEZv875xIWXxgwiExunRoxtINTharTKO4 DKTw== X-Gm-Message-State: APjAAAXmb9uoz85nWWNisqEmOGzs+kaPHUVpCKaAe45SbzbHzxTPA0i2 +vX6jYhI1UwJPM0PleDtjYk6eBAX9nleBR+lJma325mO7+P8 X-Google-Smtp-Source: APXvYqxyLGjpjTN0mObYvpOtmBDQtr6uJ7PwrSM6L61lcM5UPHprWuZJancgeOdVtUb3P1pj0JRYbD3+nDwIa7kKTYXjQFKUuwTE MIME-Version: 1.0 X-Received: by 2002:a92:3b98:: with SMTP id n24mr7262387ilh.189.1576392721076; Sat, 14 Dec 2019 22:52:01 -0800 (PST) Date: Sat, 14 Dec 2019 22:52:01 -0800 In-Reply-To: <20191215063020.GA11512@mit.edu> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002a99070599b888dd@google.com> Subject: Re: KASAN: use-after-free Read in ext4_xattr_set_entry (2) From: syzbot To: a@unstable.cc, adilger.kernel@dilger.ca, afd@ti.com, b.a.t.m.a.n@lists.open-mesh.org, chris@lapa.com.au, davem@davemloft.net, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, mareklindner@neomailbox.ch, netdev@vger.kernel.org, pali.rohar@gmail.com, sre@kernel.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com, tytso@mit.edu Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Hello, syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+4a39a025912b265cacef@syzkaller.appspotmail.com Tested on: commit: dfdeeb41 Merge branch 'tt/misc' into dev git tree: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git master kernel config: https://syzkaller.appspot.com/x/.config?x=be3b077056d26622 dashboard link: https://syzkaller.appspot.com/bug?extid=4a39a025912b265cacef compiler: gcc (GCC) 9.0.0 20181231 (experimental) patch: https://syzkaller.appspot.com/x/patch.diff?x=11b02546e00000 Note: testing is done by a robot and is best-effort only.