JVM 24.95 SIGSEGV on C2 Compiler Thread

[Gustavo Romero]

Hi Tobias

Your wild guess on
https://bugs.openjdk.java.net/browse/JDK-6675699
was correct. Loop peeling issue was the culprit.

Also I finally was able to test exhaustively the code on OpenJDK 8
and could not reproduce it. Fixed on 8 as you said.

Thanks a lot.

Best regards,
Gustavo


On 17-03-2016 12:10, Gustavo Romero wrote:
> Hi Tobias,
> 
> I'll try to reproduce it with 8 on PPC64 and let you know about the
> result.
> 
> Thank you.
> 
> Regards,
> Gustavo
> 
> On 17-03-2016 11:30, Tobias Hartmann wrote:
>> Hi Gustavo,
>>
>> just a wild guess, but this could be one of
>> https://bugs.openjdk.java.net/browse/JDK-6675699
>> https://bugs.openjdk.java.net/browse/JDK-8027388
>>
>> Both were not backported to 7. Did you try to reproduce this with 8?
>>
>> Best regards,
>> Tobias
>>
>> On 17.03.2016 15:00, Gustavo Romero wrote:
>>> Hi Martin,
>>>
>>> I'm facing a problem with a JVM 24.95 when running an application.
>>> However it's being hard to reproduce it, ie many times C2 will
>>> optimize the method fine and the application terminates fine. Just
>>> after many complete runs, one of them will crash. Apparently it is
>>> related to https://bugs.openjdk.java.net/browse/JDK-7068051 bug,
>>> but it was fixed in hs22 and as I could not isolate it on PPC64,
>>> I can't tell if it still exists upstream on PPC64.
>>>
>>> Do you have any clue on how to isolate/debug this problem?
>>>
>>> Hotspot error log:
>>> http://hastebin.com/raw/pepajuwepu
>>>
>>> Backtrace from the thread that caused the segfault:
>>> http://hastebin.com/raw/zirelokuto
>>>
>>> Thank you!
>>>
>>> Best regards,
>>> Gustavo
>>>
>>
>