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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 A46D8C433E0 for ; Fri, 5 Jun 2020 04:20:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AA1E207D5 for ; Fri, 5 Jun 2020 04:20:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591330803; bh=yr2lNhySyjTAqk88/DfbvYyzTWs9YwgsZWVXVbcavpk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=QqJo/RetcyQHF3LKpEzOGjN3yQQyyRJo75DFaAZdkwbc9C138k8Fbj274rtHAPyPf v5q1+h6SCcjJb1ISI3+EHrHldkF3CYTZzVTCuwbtSe4+FoNOJQ4fu3svoYgeV+7FHg gE5PPI3PGJCp0EfDDoMFNNTb0h7QyE8cXTrlxNWM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725968AbgFEEUC (ORCPT ); Fri, 5 Jun 2020 00:20:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:54806 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725280AbgFEEUC (ORCPT ); Fri, 5 Jun 2020 00:20:02 -0400 Received: from sol.localdomain (c-107-3-166-239.hsd1.ca.comcast.net [107.3.166.239]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0D21F207D3; Fri, 5 Jun 2020 04:20:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591330802; bh=yr2lNhySyjTAqk88/DfbvYyzTWs9YwgsZWVXVbcavpk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=POyhlySDRQUiXLxTsatMNVSI3oKUO4CvD8DMQAzplIYRjaf6mwcUd2TZXJwTDMX6i fOz2/wDLdML9InRkGJ59ah7r9xuN1DItmDY3uy7bFxnJfalSxdvej+s2+GvfOnyfQT 1pwb8xXJfYLUxy+aoQmzDBP40GcFVcYh5kg5QI/0= Date: Thu, 4 Jun 2020 21:20:00 -0700 From: Eric Biggers To: syzbot Cc: brendanhiggins@google.com, dmitry.torokhov@gmail.com, gregkh@linuxfoundation.org, heikki.krogerus@linux.intel.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, rafael.j.wysocki@intel.com, rdunlap@infradead.org, syzkaller-bugs@googlegroups.com Subject: Re: KASAN: use-after-free Read in joydev_cleanup Message-ID: <20200605042000.GK2667@sol.localdomain> References: <0000000000007f040505a6624308@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000007f040505a6624308@google.com> Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org On Sun, May 24, 2020 at 03:24:12AM -0700, syzbot wrote: > Hello, > > syzbot found the following crash on: > > HEAD commit: c11d28ab Add linux-next specific files for 20200522 > git tree: linux-next > console output: https://syzkaller.appspot.com/x/log.txt?x=1587269a100000 > kernel config: https://syzkaller.appspot.com/x/.config?x=3f6dbdea4159fb66 > dashboard link: https://syzkaller.appspot.com/bug?extid=833ac95f0a2451d63a9f > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1114d626100000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14c4da9a100000 > > The bug was bisected to: > > commit 4ef12f7198023c09ad6d25b652bd8748c965c7fa > Author: Heikki Krogerus > Date: Wed May 13 15:18:40 2020 +0000 > > kobject: Make sure the parent does not get released before its children > Commit was reverted. #syz invalid