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,URIBL_BLOCKED autolearn=ham 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 1426FC432C0 for ; Mon, 25 Nov 2019 02:41:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DE3CF2073F for ; Mon, 25 Nov 2019 02:41:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726910AbfKYClC (ORCPT ); Sun, 24 Nov 2019 21:41:02 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:37655 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726895AbfKYClC (ORCPT ); Sun, 24 Nov 2019 21:41:02 -0500 Received: by mail-io1-f72.google.com with SMTP id p2so9943127iof.4 for ; Sun, 24 Nov 2019 18:41:01 -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=F6ESBQ5BrJgEXe13MibsQZiG8CziRMl+GW1tZsPwxAk=; b=cnzJTk19JlLa25DaLkGxkHePP3gzM5gBpyVxhgzLrmcXfjj9ik7qMhJBFoxAo5nN0G rGI9TkLrb5ZwpEEMdHMsIAhE6/8Hqwu6rVM9JjL833U/xtUEH/hbe2iBsz0ynGNp0bRt aj/JzQTWMrJqE8qRiN1vLcQKNwSRy9SB4FJi4bOKcv8cxPZmXE4HomWZx6mjrnIKCIcI B3S1Pzdgj4dq8xm7WYMCkxMQ9bKG3VTaGvszFs25lu++xY34mJKxctVpEmJRU9/gqB6s bTRxphnRsuu5gNZ3FfT0m4xZutkumpnUHUgleKtlU4lCp3ZKraRbYhl7LecDnfQj40Wr NN/A== X-Gm-Message-State: APjAAAVSDEI9YEA87ZXGvHktD4mwgjGQ9qXgZeGW940TrG3TlyEECKA8 18ghkhmqFJLWZ7C7z6wN6zCdixMowOLWPm7Wj9IKP12zZ/Hw X-Google-Smtp-Source: APXvYqzgktbuH19cOR1hGiNDDr9llthRGZ7kDd0HTaEUVdWfkRmuL4IAoR7sjdNEMnGGhyMwqsAMmAbAlIu4rV3hOgC0XgNBFuHt MIME-Version: 1.0 X-Received: by 2002:a92:d289:: with SMTP id p9mr9707923ilp.201.1574649661538; Sun, 24 Nov 2019 18:41:01 -0800 (PST) Date: Sun, 24 Nov 2019 18:41:01 -0800 In-Reply-To: <00000000000087008b056df8fbb3@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000b8c995059822b10d@google.com> Subject: Re: possible deadlock in console_unlock From: syzbot To: akpm@linux-foundation.org, gregkh@linuxfoundation.org, jslaby@suse.com, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, penguin-kernel@I-love.SAKURA.ne.jp, pmladek@suse.com, rostedt@goodmis.org, sergey.senozhatsky.work@gmail.com, sergey.senozhatsky@gmail.com, syzkaller-bugs@googlegroups.com, threeearcat@gmail.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-serial-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org syzbot has bisected this bug to: commit b6da31b2c07c46f2dcad1d86caa835227a16d9ff Author: DaeRyong Jeong Date: Mon Apr 30 15:27:04 2018 +0000 tty: Fix data race in tty_insert_flip_string_fixed_flag bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12d9bc0ee00000 start commit: 0ad39cb3 Merge tag 'kconfig-v4.18' of git://git.kernel.org.. git tree: upstream final crash: https://syzkaller.appspot.com/x/report.txt?x=11d9bc0ee00000 console output: https://syzkaller.appspot.com/x/log.txt?x=16d9bc0ee00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b9a1f3aa8b8ddd16 dashboard link: https://syzkaller.appspot.com/bug?extid=43e93968b964e369db0b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c89b9f800000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=167f596f800000 Reported-by: syzbot+43e93968b964e369db0b@syzkaller.appspotmail.com Fixes: b6da31b2c07c ("tty: Fix data race in tty_insert_flip_string_fixed_flag") For information about bisection process see: https://goo.gl/tpsmEJ#bisection