From owner-freebsd-java@freebsd.org  Sat Apr  8 07:03:45 2017
Return-Path: <owner-freebsd-java@freebsd.org>
Delivered-To: freebsd-java@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id E5916D34345
 for <freebsd-java@mailman.ysv.freebsd.org>;
 Sat,  8 Apr 2017 07:03:45 +0000 (UTC)
 (envelope-from kostikbel@gmail.com)
Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 618BB94;
 Sat,  8 Apr 2017 07:03:45 +0000 (UTC)
 (envelope-from kostikbel@gmail.com)
Received: from tom.home (kib@localhost [127.0.0.1])
 by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id v3873eW0059349
 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO);
 Sat, 8 Apr 2017 10:03:40 +0300 (EEST)
 (envelope-from kostikbel@gmail.com)
DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua v3873eW0059349
Received: (from kostik@localhost)
 by tom.home (8.15.2/8.15.2/Submit) id v3873el9059348;
 Sat, 8 Apr 2017 10:03:40 +0300 (EEST)
 (envelope-from kostikbel@gmail.com)
X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com
 using -f
Date: Sat, 8 Apr 2017 10:03:40 +0300
From: Konstantin Belousov <kostikbel@gmail.com>
To: ????????? <redraiment@gmail.com>
Cc: freebsd-java@freebsd.org, vangyzen@freebsd.org
Subject: Re: OpenJDK8 Thread.sleep will deadlock while turn down system date
 time.
Message-ID: <20170408070340.GD1788@kib.kiev.ua>
References: <CAPRzLQSOfySJWqN8CoLNchRs_JgHkeQz57ZNB9E__Meip3zmOQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAPRzLQSOfySJWqN8CoLNchRs_JgHkeQz57ZNB9E__Meip3zmOQ@mail.gmail.com>
User-Agent: Mutt/1.8.0 (2017-02-23)
X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00,
 DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no
 autolearn_force=no version=3.4.1
X-Spam-Checker-Version: SpamAssassin 3.4.1 (2015-04-28) on tom.home
X-BeenThere: freebsd-java@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: Porting Java to FreeBSD <freebsd-java.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-java>,
 <mailto:freebsd-java-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-java/>
List-Post: <mailto:freebsd-java@freebsd.org>
List-Help: <mailto:freebsd-java-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-java>,
 <mailto:freebsd-java-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 08 Apr 2017 07:03:46 -0000

On Fri, Apr 07, 2017 at 08:12:42PM -0700, ????????? wrote:
> Hi all,
> 
> I found a Java process deadlock issue, and can be reproduced in FreeBSD
> 10.3 and 11.0 .
> 
> My environment:
> 
> * VirutalBox 5.1.16 r113841 on Mac OS X 10.12.4
> * FreeBSD-11.0-RELEASE-amd64.vhd.xz
> 
> Reproduction steps:
> 
> 1. install openjdk8
> 
> ```sh
> pkg install openjdk8
> ```
> 
> 2. Java source code
> 
> ```java
> public class Main {
>     public static void main(String[] args) {
>         while (true) {
>             System.out.println("tick");
>             Thread.sleep(3000);
>         }
>     }
> }
> ```
> 
> 3. Run java
> 
> ```sh
> $ javac Main.java
> $ java Main
> tick
> tick
> ...
> ```
> 
> 4. Turn down system date time.
> 
> ```sh
> $ date '+%Y-%m-%d %H:%M:%S'
> 20170408 11:09:11
> $ date 201001010000
> Fri Jan  1 00:00:00 CST 2010
> ```
> 
> Then, the java process will hung.
Hang != deadlock, why do you claim that the process deadlocked.
> 
> The issue will reproduce while turn "DOWN" the date time. It's OK while
> turn up the date time.

If JVM sets timeouts using absolute times than it might be fixed in latest
HEAD and stable/11.