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=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,USER_AGENT_SANE_1 autolearn=no 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 19F74C35247 for ; Mon, 27 Jan 2020 09:29:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E51152071E for ; Mon, 27 Jan 2020 09:29:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="FehyzrEO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729575AbgA0J3n (ORCPT ); Mon, 27 Jan 2020 04:29:43 -0500 Received: from aserp2120.oracle.com ([141.146.126.78]:34940 "EHLO aserp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727872AbgA0J3n (ORCPT ); Mon, 27 Jan 2020 04:29:43 -0500 Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.27/8.16.0.27) with SMTP id 00R9DDEP054968; Mon, 27 Jan 2020 09:29:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : references : mime-version : content-type : in-reply-to; s=corp-2019-08-05; bh=dqtak0Ip1v1fu40eyS07aEJt+TSWkVxnjJJIK8PU5JU=; b=FehyzrEO2zhzN5U4IqRc/54MG6VUkpCZQxx5DJKM2lyXsufyEqZHzUOS7Q7JH7IcXeZp hP5NIOXHbi9UoNufThTJ5/vt3vRAd5OlBpFe3/86+dv0y4Y64hOCBZyGdPRfTRBfRuut Ds7nY0xZFvYbA13ZT5rBbuANyxTZFKyNhJIwLtw4Db+zYF0IvQTmyT09C27V/eOSG6Ke 3YjWgfxu4NRmImfF5D4UptRorAZO0dDaqOvqi9knfYpaZO5MfUDFCHb6cRKjm1r4Zgey uUeJ9PSAFRQTNHz972N8q2UNshZ8jzvdB9BzpPcleSuOuzaNrFINkaDWYzHNMJBPk2Jf 5Q== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by aserp2120.oracle.com with ESMTP id 2xrdmq61kc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 27 Jan 2020 09:29:06 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.27/8.16.0.27) with SMTP id 00R9Dev7147737; Mon, 27 Jan 2020 09:29:05 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserp3020.oracle.com with ESMTP id 2xry6rrt2a-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 27 Jan 2020 09:29:05 +0000 Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 00R9T3fq014947; Mon, 27 Jan 2020 09:29:03 GMT Received: from kadam (/129.205.23.165) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 27 Jan 2020 01:29:02 -0800 Date: Mon, 27 Jan 2020 12:28:50 +0300 From: Dan Carpenter To: Hillf Danton Cc: syzbot , andreyknvl@google.com, benjamin.tissoires@redhat.com, jikos@kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Subject: Re: KASAN: use-after-free Read in hiddev_disconnect Message-ID: <20200127092850.GX1847@kadam> References: <0000000000004dbaf2059c193a36@google.com> <20200126024957.11392-1-hdanton@sina.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200126024957.11392-1-hdanton@sina.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9512 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=309 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001270081 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9512 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=2 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=388 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001270081 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I already fixed this bug in an earlier thread. Syzbot always reports a use after free as two separate bugs, a read after free and a write after free. It's too much hassle to mark all the duplicates. regards, dan carpenter