Temurin JRE 25 ARM64 fails to start on Nanos unikernel, IBM Semeru JRE 25 works well

[AngeloRubens]

Please provide a brief summary of the bug

Description:
I encountered an issue running Temurin JRE 25 on ARM64 on the Nanos unikernel. The same JRE works fine on x86_64 Nanos and standard Linux distributions, but fails on ARM64 Nanos, whereas IBM Semeru Runtime 25 ARM64 runs correctly.

Observed behavior:

Temurin JRE ARM64 fails to start on Nanos unikernel, with JVM fatal errors.

Semeru JRE ARM64 works correctly under the same conditions.

Temurin JRE amd64 works well on nanos(see run on nanos on oracle oci http://158.180.236.67:8080/primefaces-showcase-16.0.0-SNAPSHOT/info.xhtml).

Did you test with the latest update version?

• Yes

Please provide steps to reproduce where possible

Install ops on your Nanos system:

curl https://ops.city/get.sh -sSfL | sh

Load IBM Semeru JRE 25 (ARM64) with verbose output:

ops pkg load AngeloRubens/SemeruJREarm64Linux:25.0.1 --arch arm64 --nightly --verbose

This executes correctly; java runs without errors.

Load Temurin JRE 25 (ARM64) with verbose output:

ops pkg load AngeloRubens/TemurinJREarm64Linux:25.0.1 --arch arm64 --nightly --verbose

Expected Results

Expected behavior:

Temurin JRE 25 ARM64 should start and run as IBM Semeru does.

Actual Results

(add --trace after --verbose option, to see the entire stack trace )
ops pkg load AngeloRubens/TemurinJREarm64Linux:25.0.1 --arch arm64 --nightly   --verbose
running local instance
booting /home/lop/.ops/images/java ...
[0.117985] en1: assigned 10.0.2.15
#
# A fatal error has been detected by the Java Runtime Environment:
#
#  Internal Error (assembler_aarch64.hpp:246), pid=2, tid=3
#  guarantee(val < (1ULL << nbits)) failed: Field too big for insn
#
# JRE version:  (25.0.1+8) (build )
# Java VM: OpenJDK 64-Bit Server VM (25.0.1+8-LTS, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, serial gc, linux-aarch64)
# Problematic frame:
# V  [libjvm.so+0xbc4234]  MacroAssembler::zero_dcache_blocks(Register, Register)+0x3b0
#
# Core dump will be written. Default location: core.2 (may not exist)
#
# An error report file with more information is saved as:
# //hs_err_pid2.log
#
#

*** signal 6 received by tid 3, errno 0, code -6

What Java Version are you using?

Temurin jre 25 download from eclipse temurin site and build a package for nanos(https://repo.ops.city/v2/packages/AngeloRubens/TemurinJREarm64Linux/25.0.1/arm64/show)

What is your operating system and platform?

NANOS UNIKERNEL ON ARM64

How did you install Java?

No response

Did it work before?

Did you test with other Java versions?

eclipse temurin 25 amd64, run ok on nanos unikernel

Relevant log output

[sxa]

I'll be honest I hadn't heard of Nanos before (and it's not something we'd claim to support) but I would be curious as to whether jdk8u showed the same symptoms. Also are you using a "standard" glibc library?

[AngeloRubens]

Hi, thanks for the reply, nanos is a modern unikernel solution for deploying and distributing images in the cloud.
The unikernel are the natural next step for cloud evolution.
For more details, you can read:

• Nanos website(https://nanovms.com/)

• this article(foojay.io/today/java-jakarta-ee-and-the-evolution-of-the-cloud-with-nanos-unikernel/),

• see a https://83ik77b8jj36297derqdh7.codia.website/

• POC: payara7 with azul(x86_64) on nanos, deploy on Oracle OCI(http://158.180.236.67:8080/primefaces-showcase-16.0.0-SNAPSHOT/info.xhtml?jfwid=15288)

• POC: glassfish with jre semeru(x86_64) on nanos, deploy on Oracle OCI(Promote Glassfish Deployment on Nanos Unikernel Image eclipse-ee4j/glassfish#25861).

The same glibc for arm64, used by the unikernel nanos(arm64)image for IBM semeru arm64, is used for temurin jre 25 arm64.

Regarding testing with jdk8, which build/version would you recommend?

[karianna]

Java 8 - you can try: https://adoptium.net/en-GB/download?link=https%3A%2F%2Fgithub.com%2Fadoptium%2Ftemurin8-binaries%2Freleases%2Fdownload%2Fjdk8u472-b08%2FOpenJDK8U-jdk_arm_linux_hotspot_8u472b08.tar.gz&vendor=Adoptium

I'd also see if you can post the log

//hs_err_pid2.log

Also if you can get acccess to the core dump:

Core dump will be written. Default location: core.2 (may not exist)

[AngeloRubens]

Hi, this jre 8 aarch64 on nanos unikernel arm64/aarch64 running ok:

https://github.com/adoptium/temurin8-binaries/releases/download/jdk8u472-b08/OpenJDK8U-jdk_aarch64_linux_hotspot_8u472b08.tar.gz:

running local instance
booting /home/lop/.ops/images/java ...
qemu-system-aarch64 -machine virt -machine gic-version=2 -kernel /home/lop/.ops/nightly-arm/kernel.img -device virtio-blk-pci,drive=hd0 -semihosting -m 1G -device virtio-rng-pci -device virtio-balloon -cpu max -drive file=/home/lop/.ops/images/java,format=raw,if=none,id=hd0 -device virtio-net,netdev=n0,mac=9e:22:d3:50:a3:eb -netdev user,id=n0,hostfwd=tcp::8080-:8080,hostfwd=tcp::8181-:8181,hostfwd=tcp::4848-:4848 -display none -serial stdio
[0.136069] en1: assigned 10.0.2.15
OpenJDK 64-Bit Server VM warning: DC ZVA is not available on this CPU
[2.042576] en1: assigned FE80::9C22:D3FF:FE50:A3EB
VM settings:
Max. Heap Size (Estimated): 453.50M
Ergonomics Machine Class: client
Using VM: OpenJDK 64-Bit Server VM

Property settings:
awt.toolkit = sun.awt.X11.XToolkit
file.encoding = ANSI_X3.4-1968
file.encoding.pkg = sun.io
file.separator = /
java.awt.graphicsenv = sun.awt.X11GraphicsEnvironment
java.awt.printerjob = sun.print.PSPrinterJob
java.class.path = quarkus/quarkus-faces-runner.jar
java.class.version = 52.0
java.endorsed.dirs = /jdk-8-jre/lib/endorsed
java.ext.dirs = /jdk-8-jre/lib/ext
/usr/java/packages/lib/ext
java.home = /jdk-8-jre
java.io.tmpdir = /tmp
java.library.path = /usr/java/packages/lib/aarch64
/lib
/usr/lib
java.runtime.name = OpenJDK Runtime Environment
java.runtime.version = 1.8.0_472-b08
java.specification.maintenance.version = 6
java.specification.name = Java Platform API Specification
java.specification.vendor = Oracle Corporation
java.specification.version = 1.8
java.vendor = Temurin
java.vendor.url = https://adoptium.net/
java.vendor.url.bug = https://github.com/adoptium/adoptium-support/issues
java.version = 1.8.0_472
java.vm.info = mixed mode
java.vm.name = OpenJDK 64-Bit Server VM
java.vm.specification.name = Java Virtual Machine Specification
java.vm.specification.vendor = Oracle Corporation
java.vm.specification.version = 1.8
java.vm.vendor = Temurin
java.vm.version = 25.472-b08
line.separator = \n
os.arch = aarch64
os.name = Nanos
os.version = 5.0-0.1.54_aaa
path.separator = :
sun.arch.data.model = 64

[AngeloRubens]

This is the error log for jre 25 temurin aarch64 on nanos aarch64

hs_err_pid2.log

[AngeloRubens]

The same error there is for temurin jre 11,17 and 21....

[AngeloRubens]

Any update or feedback?

[sxa]

It's not an environment which we test in, so at this point I would suggest it would be up to someone in the community to progress with the diagnosis and resolution here.

[karianna]

@AngeloRubens Do try an OpenJDK HotSpot build (e.g., Azul) and see if that also fails. If so it's an upstream challenge and we can recommend a mailing list.

[AngeloRubens]

HI @karianna thanks for reply. I have tryed Azul, Amazon Corretto, Microsoft OpenJdk, Alibaba Dragonwell, the same Internal Error (assembler_aarch64.hpp) for all.

[karianna]

OK, I recommend you post your bug to: https://mail.openjdk.org/mailman/listinfo/hotspot-runtime-dev (you'll need to join). I think if you make it clear that it's happening on 25.0.1 no matter who the vendor is, post the crash log(s) and ask if it's possible to get this patched in order to support the Nanos unikernel then you'll hopefully get a positive response.

You may find the wheels turn slowly as it's not (yet) an officially supported platform.

Once you get your mail/post up on that mailing list do let me know here and I'll track it, perhaps we can find a volunteer in this community to create a fix that upstream would accept.

[AngeloRubens]

HI @karianna i have send mail to hotspot-runtime-dev 👍

https://mail.openjdk.org/pipermail/hotspot-runtime-dev/2026-January/084197.html