Java 21 clinit deadlock

[David Holmes]

Hi Simone,

On 13/09/2023 4:16 pm, Simone Bordet wrote:
> Hi,
> 
> On Tue, Sep 12, 2023 at 11:44 PM David Holmes <david.holmes at oracle.com> wrote:
>>
>> Hi Simone,
>>
>> Thanks for the logs. Unfortunately they shed no light on what is
>> happening. There is no sign of the MutableHttpFields class starting
>> actual initialization, though we can see that it was linked (verified).
>> And there are no exceptions indicated relevant to the class loading and
>> initialization process that I can discern.
>>
>> The class initialization logging is unfortunately rather sparse and I
>> think we would need to add some additional logging to shed further light
>> on this. Are you in a position to patch the sources, create a custom
>> build and test again with that build?
> 
> Yes we can do this.

I've created a draft PR here:

https://github.com/openjdk/jdk/pull/15732

can you apply that patch, build and re-test? Hopefully that will show 
which thread is doing the missing initialization.

Thanks,
David