Shenandoah crash

[Lennart Börjeson]

> 7 feb. 2018 kl. 12:10 skrev Aleksey Shipilev <shade at redhat.com>:
> 
> On 02/01/2018 02:53 PM, Aleksey Shipilev wrote:
>> Thanks for the bug report!
>> 
>> On 02/01/2018 01:05 PM, Lennart Börjeson wrote:
>>> #
>>> # A fatal error has been detected by the Java Runtime Environment:
>>> #
>>> #  Internal Error (/Users/lennartb/RaT/openJDK/shenandoah-jdk10/src/hotspot/share/gc/shenandoah/shenandoahVerifier.cpp:184), pid=37194, tid=11267
>>> #  Error: Shenandoah verification failed; After Mark, Roots: Must be marked in complete bitmap
>>> 
>>> Referenced from:
>>>  interior location: 0x00007faf6cd0d3c0
>>>  outside of Java heap
>>>  0x00007faf6cd0d3c0 is a weak global jni handle
>> 
>>                            ^^^^^^^^^^^^^^^^^^^^^^
>> 
>> This one seems enough of the smoking gun to chase the bug for now. It must be the bug in handling
>> the weak global JNI handles: we apparently miss that root during mark?
>> 
>> If we cannot find any obvious bugs there and/or fail to write a reproducer, we would need to work to
>> understanding the failing application better. We are going to FOSDEM for the rest of the week, so --
>> barring heroics of anyone here -- we would be able to look at it next week.
> 
> You might want to test this patch:
>  http://mail.openjdk.java.net/pipermail/shenandoah-dev/2018-February/004924.html
> 
> -Aleksey

I've run my application with this patch, without any errors. I've tested both adaptive and traversal.

Thank you!

/Lennart

>