JDK7 SIGSEGV with G1 garbage collector

[Punya Biswal]

Hi Bengt,

Thanks for the prompt response! Please let me know if I can provide
anything else that will be useful.

--
Punya Biswal
Palantir | Engineer


On 8/21/13 6:28 AM, "Bengt Rutisson" <bengt.rutisson at oracle.com> wrote:

>
>Hi again,
>
>This seems to be a bug in the C2 compiler. I've filed JDK-8023472 to
>track this. I'll come back with a URL once this bug is publicly available.
>
>Thanks again for the great bug report!
>Bengt
>
>On 8/21/13 8:52 AM, Bengt Rutisson wrote:
>>
>> Hi Punya,
>>
>> Thank you for the excellent bug report!
>>
>> I cloned the test case and can reproduce the issue both with 7u25
>> build 15 (that you used) and also with the latest build of JDK8.
>>
>> I'll dig some more into what is going on and file a bug. Will ping
>> this thread when I have more information.
>>
>> Bengt
>>
>> On 8/21/13 12:05 AM, Punya Biswal wrote:
>>> [Apologies if this message is delivered twice; I sent it once before I
>>> realized this was a members-only list.]
>>>
>>> We're running into a JVM segfault when using a third-party library
>>> (Elasticsearch) alongside the G1 garbage collector. This issue has been
>>> reported elsewhere (for example,
>>> 
>>>https://urldefense.proofpoint.com/v1/url?u=https://jira.terracotta.org/j
>>>ira/browse/CDV-1651&k=fDZpZZQMmYwf27OU23GmAQ%3D%3D%0A&r=kTrYN051orSRhyA6
>>>mqYxbjRIX%2BBCPm7thmzLC79vBeM%3D%0A&m=eQXvXMfzOBqOYQJCPTAI8m0yYLgOXGzbUN
>>>Y%2FyEd6LjE%3D%0A&s=4517eb7bba43d15b07ba2a16457f9371f3d18509f2b13a22de37
>>>6bdb2e19e95f) and might already
>>> be on
>>> the OpenJDK roadmap. It's usually associated with the use of GNU Trove.
>>>
>>> We've been able to reduce the amount of code required to reproduce the
>>> crash to a short program that reliably crashes on my computer
>>> (a MacBook Pro) using only JDK core classes. I've also included the
>>> hs_err_* diagnostic file; both are at
>>> 
>>>https://urldefense.proofpoint.com/v1/url?u=https://gist.github.com/punya
>>>/6287943&k=fDZpZZQMmYwf27OU23GmAQ%3D%3D%0A&r=kTrYN051orSRhyA6mqYxbjRIX%2
>>>BBCPm7thmzLC79vBeM%3D%0A&m=eQXvXMfzOBqOYQJCPTAI8m0yYLgOXGzbUNY%2FyEd6LjE
>>>%3D%0A&s=1a3b70ed491698a5a44b0fc5d03329444dbe1b093056d9609cf1ff8c57deb28
>>>8 .
>>>
>>> Does this reduced repro help understand what's going on?
>>>
>>>
>>> A few points of interest:
>>>
>>> * running with -XX:+UseG1GC -Dcount=100000 always crashes
>>> * running with -XX:+UseG1GC -Xint -Dcount=100000 never crashes
>>> * running with -Xint -Dcount=100000 never crashes
>>>
>>>
>>> Using -ea and/or -server don't any effect these results. With regard to
>>> JVM versions,
>>>
>>> * it never crashes on JDK 6u51
>>> * it crashes on JDK 7u25 and JDK 7u43 (prerelease)
>>> * it never crashes on JDK 8 (prerelease)
>>>
>>>
>>> I'm happy to provide a link to a core dump if that helps.
>>>
>>> -- 
>>> Punya Biswal
>>> Palantir | Engineer
>>> pbiswal at palantir.com | 206 605 2397
>>
>