C2 Jit compiler fails accessing off-heap memory via Unsafe with ShenandoahGC

Sergey Korotkov serge.korotkov at gmail.com
Mon Jun 16 03:56:11 UTC 2025


Hello Roland,

Thanks much for an amazingly fast fix!

Are there any chances to get it backported to jdk 17 and 21?

Our product (Apache Ignite) heavily relies on off-heap memory operations 
via Unsafe.  I already applied the work around in our code but still not 
100% sure that problem wouldn't hit in some other place.

I can drive the backport if you would help with steps which needed the 
JBS user account.

WBR,
--
   Sergey



On 6/2/25 22:52, Roland Westrelin wrote:
> 
> Hi Sergey,
> 
> Thanks for the bug report. I created
> https://bugs.openjdk.org/browse/JDK-8358334 to track that one. I'm
> having a look.
> 
> Roland.
> 



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