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=-7.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, 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 D8EEFC4743F for ; Tue, 8 Jun 2021 08:53:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BF83A61289 for ; Tue, 8 Jun 2021 08:53:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230444AbhFHIzm (ORCPT ); Tue, 8 Jun 2021 04:55:42 -0400 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]:17778 "EHLO mx0b-00069f02.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229507AbhFHIzk (ORCPT ); Tue, 8 Jun 2021 04:55:40 -0400 Received: from pps.filterd (m0246630.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1588lt9Q000998; Tue, 8 Jun 2021 08:53:28 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-2020-01-29; bh=uXsfBS09h5r8atqX2PNh5Ig45l4lwTr4pwZjL/r3r08=; b=rIHqGiszTwgFXYU/29HrTXFSuOgR9+nwuryBFW68Xibj9DLPsIar+VXv/BI9MdswqoYW 2qR4lyled93+VhADteVmUs9HeKBOAQyMh8qnNO8Fr5XK8r1U1S4AZ0uFyUc4sgJY9EIf +XrbhyeczsMbcIjlnA9yYyf/LrrpIKgiANecaz/VPhzenvG0jKqlG1h1YvJYHJEEt7RH mscM9rM8T6aLdp334Non989aCGXV6XRsWAl6PMNBuuz3mBtdfATRf1MNq5iz+iZ0jnLw MwQZc+pA5q0zFWnC/kVAdl3hiEU70Or7jAUNXolAmXEZy+puOr+cvoJseSgdfyJFalN6 Vw== Received: from oracle.com (aserp3030.oracle.com [141.146.126.71]) by mx0b-00069f02.pphosted.com with ESMTP id 3916ehrkkr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 08 Jun 2021 08:53:27 +0000 Received: from aserp3030.oracle.com (aserp3030.oracle.com [127.0.0.1]) by pps.podrdrct (8.16.0.36/8.16.0.36) with SMTP id 1588pMAu194740; Tue, 8 Jun 2021 08:53:27 GMT Received: from pps.reinject (localhost [127.0.0.1]) by aserp3030.oracle.com with ESMTP id 38yyaaqvpv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 08 Jun 2021 08:53:27 +0000 Received: from aserp3030.oracle.com (aserp3030.oracle.com [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 1588rQWJ003308; Tue, 8 Jun 2021 08:53:26 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 38yyaaqvpd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 08 Jun 2021 08:53:26 +0000 Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 1588rJqi003329; Tue, 8 Jun 2021 08:53:22 GMT Received: from kadam (/41.212.42.34) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 08 Jun 2021 08:53:18 +0000 Date: Tue, 8 Jun 2021 11:53:10 +0300 From: Dan Carpenter To: "Jason A. Donenfeld" Cc: SyzScope , syzbot , davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, kernel-hardening@lists.openwall.com Subject: Re: KASAN: use-after-free Read in hci_chan_del Message-ID: <20210608085310.GA1955@kadam> References: <000000000000adea7f05abeb19cf@google.com> <2fb47714-551c-f44b-efe2-c6708749d03f@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.4 (2018-02-28) X-Proofpoint-GUID: 9xkxAKvdty5E81yk4zbMACfpHhdkZeVE X-Proofpoint-ORIG-GUID: 9xkxAKvdty5E81yk4zbMACfpHhdkZeVE Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This SyzScope stuff could be good in theory and it could be something useful with more work. But in real life terms do you know anyone who looked at "use-after-free Read in hci_chan_del" and thought, "Oh that sounds totally harmless." regards, dan carpenter