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 72B32C33CA9 for ; Mon, 13 Jan 2020 16:42:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 48BB62084D for ; Mon, 13 Jan 2020 16:42:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728988AbgAMQmD (ORCPT ); Mon, 13 Jan 2020 11:42:03 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:55130 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728734AbgAMQmC (ORCPT ); Mon, 13 Jan 2020 11:42:02 -0500 Received: by mail-il1-f197.google.com with SMTP id t4so8208283ili.21 for ; Mon, 13 Jan 2020 08:42:02 -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=UggXgyDMOpX5GHDFThGPB3yVNMKWrTSHTCaDTJ6McXo=; b=WWNcSHcm3IqNckhB3KfP3VHQh+K0OMdM12xS+eFinxefvCITb200qsS/5c4/gbZ5pM y/9gh5dY2tXNl3JXRJhXlvVGiwX99zx1PTWJNJu2iUHCxI+X42kaY2+PPinx6AZEopv9 HefQqVLxeic20ahyhhc8/7nQPKZ5do3dWd9gfdjNc/7PtQCJIxSl5/jPXO9Ui9tW3ym0 TziT/7pcTVA9boiW9GUy63bKs78x3gan35IfeTk8Z0NolLM01aaYjWgTIE1arolxidNk ukJy+X6QABDXN+w50TKebxsnAB+G7tddf214A33ZHsZAtJtjUdYoUgUdGuAx20vAiscH H5cQ== X-Gm-Message-State: APjAAAVHfAS2EqB71wtyrJ4963abc+7qbZIV7c297Z3hHlAJrGBUn/Wh OE11zZatx/to6wQppvA/wRcuUEEPkokctsp+XHrYDtR0bDJJ X-Google-Smtp-Source: APXvYqy9CaTqUtRxm4JcRDeD0S3bogD6d4mwoiAZp6aBCI1DHZPoiOj+/Q+WaCE26zNZRvjut3aai5qER8Zl/wD9tSgZi30iB5tl MIME-Version: 1.0 X-Received: by 2002:a5e:8516:: with SMTP id i22mr13810044ioj.130.1578933722080; Mon, 13 Jan 2020 08:42:02 -0800 (PST) Date: Mon, 13 Jan 2020 08:42:02 -0800 In-Reply-To: <0000000000005ed7710596937e86@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a0ef18059c082789@google.com> Subject: Re: KASAN: use-after-free Read in j1939_xtp_rx_abort_one From: syzbot To: bst@pengutronix.de, davem@davemloft.net, dev.kurt@vandijck-laurijssen.be, ecathinds@gmail.com, kernel@pengutronix.de, linux-can@vger.kernel.org, linux-kernel@vger.kernel.org, linux@rempel-privat.de, lkp@intel.com, maxime.jayat@mobile-devices.fr, mkl@pengutronix.de, netdev@vger.kernel.org, o.rempel@pengutronix.de, robin@protonic.nl, socketcan@hartkopp.net, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot suspects this bug was fixed by commit: commit ddeeb7d4822ed06d79fc15e822b70dce3fa77e39 Author: Oleksij Rempel Date: Sat Nov 9 15:11:18 2019 +0000 can: j1939: j1939_can_recv(): add priv refcounting bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15a7ec76e00000 start commit: de620fb9 Merge branch 'for-5.4-fixes' of git://git.kernel... git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=f9ff8f11e66c1fb1 dashboard link: https://syzkaller.appspot.com/bug?extid=db4869ba599c0de9b13e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113e0d72e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=136aa6e8e00000 If the result looks correct, please mark the bug fixed by replying with: #syz fix: can: j1939: j1939_can_recv(): add priv refcounting For information about bisection process see: https://goo.gl/tpsmEJ#bisection