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=-3.7 required=3.0 tests=BAYES_00,DATE_IN_PAST_03_06, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 A6453C433ED for ; Thu, 1 Apr 2021 19:04:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 82C7F6101A for ; Thu, 1 Apr 2021 19:04:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238315AbhDATDj (ORCPT ); Thu, 1 Apr 2021 15:03:39 -0400 Received: from netrider.rowland.org ([192.131.102.5]:48283 "HELO netrider.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S235172AbhDAS5U (ORCPT ); Thu, 1 Apr 2021 14:57:20 -0400 Received: (qmail 1052805 invoked by uid 1000); 1 Apr 2021 09:30:37 -0400 Date: Thu, 1 Apr 2021 09:30:37 -0400 From: Alan Stern To: syzbot Cc: a@unstable.cc, alex.aring@gmail.com, b.a.t.m.a.n@lists.open-mesh.org, davem@davemloft.net, info@sophiescuban.com, jkosina@suse.cz, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-wpan@vger.kernel.org, mareklindner@neomailbox.ch, netdev@vger.kernel.org, stefan@datenfreihafen.org, sw@simonwunderlich.de, syzkaller-bugs@googlegroups.com Subject: Re: [syzbot] WARNING in ieee802154_del_seclevel Message-ID: <20210401133037.GA1052133@rowland.harvard.edu> References: <00000000000073afff05bbe9a54d@google.com> <00000000000020564605bedb716e@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000020564605bedb716e@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Mar 31, 2021 at 02:03:08PM -0700, syzbot wrote: > syzbot has bisected this issue to: > > commit 416dacb819f59180e4d86a5550052033ebb6d72c > Author: Alan Stern > Date: Wed Aug 21 17:27:12 2019 +0000 > > HID: hidraw: Fix invalid read in hidraw_ioctl > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=127430fcd00000 > start commit: 6e5a03bc ethernet/netronome/nfp: Fix a use after free in n.. > git tree: net > final oops: https://syzkaller.appspot.com/x/report.txt?x=117430fcd00000 > console output: https://syzkaller.appspot.com/x/log.txt?x=167430fcd00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=daeff30c2474a60f > dashboard link: https://syzkaller.appspot.com/bug?extid=fbf4fc11a819824e027b > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13bfe45ed00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1188e31ad00000 > > Reported-by: syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com > Fixes: 416dacb819f5 ("HID: hidraw: Fix invalid read in hidraw_ioctl") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection It seems likely that the bisection ran off the rails here. This commit could not have caused a problem, although it may have revealed a pre-existing problem that previously was hidden. By the way, what happened to the annotated stack dumps that syzkaller used to provide in its bug reports? Alan Stern