JVM 24.95 SIGSEGV on C2 Compiler Thread

[Tobias Hartmann]

Hi Gustavo,

On 11.05.2016 23:26, Gustavo Romero wrote:
> 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.

Good, thanks for the update!

[CC'ing hotspot-dev for the record]

Best regards,
Tobias

> 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
>>>>
>>>
>>
>