Date: Wed, 17 Jun 2015 00:05:39 -0500 From: Paul <pmcnary@cameron.net> To: freebsd-java@freebsd.org Subject: Re: openjdk problem with OpenNMS Message-ID: <55810023.8030908@cameron.net> In-Reply-To: <558086B6.7090305@cameron.net> References: <557A0187.2070009@cameron.net> <9FCA7050-EE97-4D30-95EF-87DDF39E09A8@eileo.com> <558086B6.7090305@cameron.net>
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Another Followup -
hotspot/src/os/bsd/vm/os_bsd.cpp is where mprotect is used and
some of the BSD patches indicate that there might be problem
with the patches.
Has this been looked at as a possible source of the SIGSEGV problems?
----------------------------------------------------------------------------
In tracing system calls ....
Multiple SIGSEGV's are occuring
Many are near: system call:
26326: mprotect(0x800659000,4096,PROT_NONE) = 0 (0x0)
26326: SIGNAL 11 (SIGSEGV)
Several others occurred:
26326:
stat("/usr/local/openjdk8/jre/lib/jaxp.properties",0x7ffffebec078) ERR#2
'No such file or directory'
26326: SIGNAL 11 (SIGSEGV)
A couple more near:
26326:
madvise(0x8df4cb000,0xa0000,0x5,0xaaaaaaaaaaaaaaab,0x0,0x80100bbe0) = 0
(0x0)
26326: SIGNAL 11 (SIGSEGV)
So something in the OpenJDK is having at least a problem with mprotect
and madvise.
These probably have POSIX and non-POSIX versions on FreeBSD.
So problem is not 1 SIGSEGV but many.
On 6/16/2015 3:27 PM, Paul wrote:
> Hello Jean-Yves
>
> Interesting, your last name is same as one of my best friends!
>
> Has anyone taken ownership of this problem (FreeBSD and/or OpenJDK?
> Has OpenJDK responded to anyone about these issues?
> Is there an OpenJDK trouble ticket for this?
>
> Thanks
> Paul
> pmcnary@cameron.net
>
>
> On 6/16/2015 5:07 AM, Jean-Yves Moulin wrote:
>> Hi,
>>
>>
>>> On 11 Jun 2015, at 23:45 , Paul <pmcnary@cameron.net> wrote:
>>>
>>> Bug report is on OpenNMS JIRA as replies and links show below.
>>> Dumps and crash reports are attached to the JIRA bug report.
>>>
>>> Can the FreeBSD JAVA team please assist with this problem?
>>>
>>> Problem only seems to exist on FreeBSD OpenJDK!
>>
>> This OpenJDK issue doesn’t concern only OpenNMS: we have the same
>> kind of segfault in our internal application, with both OpenJDK-7 and
>> OpenJDK-8. Segfault which doesn’t happen when using linux binary JVM.
>>
>> Unfortunately, we are unable to reproduce the issue with a simple code.
>>
>>
>> Regards,
>> jym
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