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Date:      Thu, 30 Jan 2014 13:00:27 -0500
From:      Jung-uk Kim <jkim@FreeBSD.org>
To:        Kenneth Culver <kwculver@gmail.com>,  Sevan / Venture37 <venture37@gmail.com>
Cc:        "huanghwh@gmail.com" <huanghwh@gmail.com>, "freebsd-stable@freebsd.org" <freebsd-stable@freebsd.org>, "freebsd-java@freebsd.org" <freebsd-java@freebsd.org>
Subject:   Re: openjdk6 - FreeBSD 10.0-RELEASE - dies with "exited on signal 6"
Message-ID:  <52EA933B.6030307@FreeBSD.org>
In-Reply-To: <CAMKv5kbErZixmtDfms-4YQ6uGZF_D0dmRA-mcVjN1AtU-bzsrg@mail.gmail.com>
References:  <CABW2x9r0zgnb=XX%2BzeaPpGFrCVrf_a0rZz3_Rt%2BGX9zUieCkKg@mail.gmail.com> <CAMKv5kYcG8ZQLyRO6F5C-PaqtE1d4MZ80=1yeE-PWR72Qv_m1w@mail.gmail.com> <CA%2BU3Mf6g_3S=%2BE5tp37NYc2Xcwqnzc73zATU_EPOwc8hMynimA@mail.gmail.com> <CAMKv5kY0pWHg1_%2BSN%2BorCs7_VH%2BZ5U=xY1MTY08mppymsahpMQ@mail.gmail.com> <CAB8uncZDWzkHwBNBG96cmPnky8roJ4W9%2BxyLUACvMLkXoorJ6g@mail.gmail.com> <52B72D09-62E0-4D36-9D56-F45D4D223382@gmail.com> <CAMKv5kbErZixmtDfms-4YQ6uGZF_D0dmRA-mcVjN1AtU-bzsrg@mail.gmail.com>

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On 2014-01-30 07:53:41 -0500, Kenneth Culver wrote:
> Disabling background compilation fixed my issues.
> 
> On Wednesday, January 29, 2014, Sevan / Venture37
> <venture37@gmail.com> wrote:
> 
>> On 29 Jan 2014, at 01:13, Huang Wen Hui <huanghwh@gmail.com
>> <javascript:;>> wrote:
>> 
>>> I got the same problem on FreeBSD 10, disable Background
>>> Compilation
>> seems to fixed this problem.
>> 
>> Patched & rebuild openjdk6, I was able to complete the opennms
>> built process so I thought I'd restart it to double check, build
>> process froze with java process in a state of uwait. Aborted
>> after 4 hours & restarted once more.

We are well aware of this problem and trying hard to fix it ATM.
However, debugging process is very slow because I cannot reproduce the
problem at all.  ale@ is providing some core dumps and I am trying to
figure out what's happening.  I know some objects are getting
free()'ed earlier than expected, which is ultimately causing SIGSEGV
or SIGBUS *later*.  So, I need more information.  Please send the
following information *privately*.

grep -B 3 -C 8 CPU: /var/run/dmesg.boot
cd /usr/ports/java/openjdk6 && make -V CC -V CFLAGS -V CXX -V CXXFLAGS

In the mean time, it seems disabling background compilation (-Xbatch)
significantly reduces chance of crashes as you already found out.
Obviously, disabling JIT compilation (-Xint) should always work.

Thanks,

Jung-uk Kim
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