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=unavailable 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 09992C2BA1A for ; Sat, 25 Apr 2020 00:23:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DCBF02084D for ; Sat, 25 Apr 2020 00:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726059AbgDYAXG (ORCPT ); Fri, 24 Apr 2020 20:23:06 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:34523 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725851AbgDYAXF (ORCPT ); Fri, 24 Apr 2020 20:23:05 -0400 Received: by mail-il1-f199.google.com with SMTP id z5so7994704ilz.1 for ; Fri, 24 Apr 2020 17:23:05 -0700 (PDT) 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=esBSsBbw+kcCXBkpJEM2iyfuK9TKxh9r1ZoVcdUm/nY=; b=mowy9wXzS67eKG4TrLAG8Id1BqJDuWK7GoGy1vdFIzLzJNlOeN0+GX3pXbFs5Gc7SM kMnxa1Gv/CjzVSjDxN/f6/CyBHtI+BolGt2JKU4ONhPb9s2hOB53a0e8aMVHL85rzp87 NpWWm6HuSY5TaMkPY1Dk2hXTlJE4CkuoN04bKqQchnKmNSTeAO3hoZ+vXw5qTiAPI++x 7T9Uc4WuEDM+gaiGuh36cuin9OhJ39TsjiKG/5XwsAppv97C4HxIRJyOvdaJ5RllyKFt lPxTJ666quOezVVSkVUcCBS0Tv3emzDYY+GgUbUt8IiZS1ladERO/UUlZoTVbj7AtILJ JULA== X-Gm-Message-State: AGi0Pua+HNJ/Q5OMte+nNKIJzYpMRowOHkJX1YwoKr3sbYl4uMlmumDq qVayzx0I5Thfgl2NMlWoMew3aGiJJHpwvWiKKUC55ifnWy60 X-Google-Smtp-Source: APiQypL5JVe43wR3OA9+wBM/bsSnyUQzSomysGMB1rykNrbbIzpZF4k6STnA0yLWvTFxmNUaKhUQRanw35nPbZ32kTlU916icgi/ MIME-Version: 1.0 X-Received: by 2002:a05:6602:2d91:: with SMTP id k17mr10959064iow.78.1587774183258; Fri, 24 Apr 2020 17:23:03 -0700 (PDT) Date: Fri, 24 Apr 2020 17:23:03 -0700 In-Reply-To: <000000000000dd04830598d50133@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002d42ee05a4127cfc@google.com> Subject: Re: KASAN: use-after-free Read in tty_open From: syzbot To: dvyukov@google.com, ebiggers@google.com, gleb@kernel.org, gregkh@linuxfoundation.org, gwshan@linux.vnet.ibm.com, hpa@zytor.com, jslaby@suse.com, jslaby@suse.cz, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, mpe@ellerman.id.au, pbonzini@redhat.com, ruscur@russell.cc, stewart@linux.vnet.ibm.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" 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 ca4463bf8438b403596edd0ec961ca0d4fbe0220 Author: Eric Biggers Date: Sun Mar 22 03:43:04 2020 +0000 vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11594fc8100000 start commit: 07c4b9e9 Merge tag 'scsi-fixes' of git://git.kernel.org/pu.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=79f79de2a27d3e3d dashboard link: https://syzkaller.appspot.com/bug?extid=9af6d43c1beabec8fd05 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=113886fae00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1263520ae00000 If the result looks correct, please mark the bug fixed by replying with: #syz fix: vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console For information about bisection process see: https://goo.gl/tpsmEJ#bisection