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 AF36DC432C0 for ; Wed, 4 Dec 2019 02:45:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8296120640 for ; Wed, 4 Dec 2019 02:45:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726986AbfLDCpC (ORCPT ); Tue, 3 Dec 2019 21:45:02 -0500 Received: from mail-il1-f200.google.com ([209.85.166.200]:56947 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726856AbfLDCpC (ORCPT ); Tue, 3 Dec 2019 21:45:02 -0500 Received: by mail-il1-f200.google.com with SMTP id e5so4618834ile.23 for ; Tue, 03 Dec 2019 18:45:01 -0800 (PST) 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=tCMUC5Ey7adRpUDsqcilcHQWuXQS9qiXWW1HvjkqOis=; b=swCC4ClbCQAyhxfDlzPWnktQAX+jGUgcNRvTA0pK+pw/gS7fz9tCKLfnlTaXP6diD2 dPMjOgv6NR0ynVt3wDttch5l63PTdK8DgtURUBv8numxj5yjgmUQaFnghBxB9tQNfrXv /flrOAf00wytTAHqHzehoCNgQAwmnlUTlC3CXDygxToC2YpXwcG3beHseq/3wykQB4kG Pn4VQQSpQjeoB3zheCthclCGKsiT78i1HLYAhZvxonHfKQUYJeYaHizecoB744/6XX1l 7NsJGo96e4535zknPu+ELjjHHR6FafS+YcSMj1sQBT+yBubVsYd2897Y9rv+ibnDlw0P 9bbg== X-Gm-Message-State: APjAAAXRxIC+cMaIkHRy9/QC/ahJhD/F8Hw73IwmN69z4c2w/B/6aAB2 XgVkahqDaC1f3B8B9XZWb454EX0KshH3wMLUW1ikMj9AJhXA X-Google-Smtp-Source: APXvYqyTpaCVnDPlSz0wClrWbfe+GR1eD78eZBnhUlXj8esJwkaZhmLdyNh5D6nMvOl+CrbF0oIsolfNn5+b3maERg4zP5CgEcgx MIME-Version: 1.0 X-Received: by 2002:a05:6638:a4a:: with SMTP id 10mr1003754jap.44.1575427501287; Tue, 03 Dec 2019 18:45:01 -0800 (PST) Date: Tue, 03 Dec 2019 18:45:01 -0800 In-Reply-To: <000000000000dd04830598d50133@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009574da0598d7ccfa@google.com> Subject: Re: KASAN: use-after-free Read in tty_open From: syzbot To: gleb@kernel.org, gregkh@linuxfoundation.org, gwshan@linux.vnet.ibm.com, hpa@zytor.com, jslaby@suse.com, 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"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this bug to: commit 2de50e9674fc4ca3c6174b04477f69eb26b4ee31 Author: Russell Currey Date: Mon Feb 8 04:08:20 2016 +0000 powerpc/powernv: Remove support for p5ioc2 bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15e5fc32e00000 start commit: 76bb8b05 Merge tag 'kbuild-v5.5' of git://git.kernel.org/p.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=17e5fc32e00000 console output: https://syzkaller.appspot.com/x/log.txt?x=13e5fc32e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=dd226651cb0f364b dashboard link: https://syzkaller.appspot.com/bug?extid=9af6d43c1beabec8fd05 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d15061e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14b69aeae00000 Reported-by: syzbot+9af6d43c1beabec8fd05@syzkaller.appspotmail.com Fixes: 2de50e9674fc ("powerpc/powernv: Remove support for p5ioc2") For information about bisection process see: https://goo.gl/tpsmEJ#bisection