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eclipse-openj9 / openj9

Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.
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IBM J9 JAVA CRASH when compile a methond on optLevel warm. #11228

Open nikxliu opened 3 years ago

nikxliu commented 3 years ago

Java -version output

java version "1.8.0_251" Java(TM) SE Runtime Enviroment (build 8.0.6.10 -pxa6480sr6fp10-20200408_01(SR6 FP10)) IBM J9 VM (build 2.9, JRE 1.8.0 Linux amd64-64-Bit Compressed References 2020402_443261 (JIT enabled, AOT enabled) OpenJ9 - 35ef566 OMR - 4bca4f4 IBM - 55acf4a) JCL - 20200407_01 based on Oracle jdk8u251-b08

Summary of problem

I have a java application which deployed on IBM JAVA. It's version is 8.0.6.10. OpenJ9 35ef566, OMR 4bca4f4, IBM 55acf4a. This application always crashed when the java attempt to compile a method on optLevel warm. When I use the -Xjit parameter to decrease the optLevel to cold. The application crashed again when the java attempt to compile another method on optLevel warm. So I want get the omr team's support to resolve this question.

I got the jitdump and javacore files. If you need this files I will upload them.

thanks very much

I paste some messages which are from jitdump file.

=======>java/beans/PropertyDescriptor.getReadMethod()Ljava/lang/reflect/Method; <ilgen method="java/beans/PropertyDescriptor.getReadMethod()Ljava/lang/reflect/Method;">

{DumpMethod()}

...... ExceptionRange: start [ a3] end [ a7] handler [ ab] type [ 25] got fieldsig as Ljava/beans/MethodRef;� IlGenerator: Generating compressedRefs anchor [00007F019B003F50] for node [00007F019B003EB0] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B0801E0] for node [00007F019B080140] got fieldsig as Ljava/beans/MethodRef;� IlGenerator: Generating compressedRefs anchor [00007F019B080640] for node [00007F019B0805A0] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B0813B0] for node [00007F019B081310] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B081A40] for node [00007F019B0819A0] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B082A30] for node [00007F019B082990] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B082BC0] for node [00007F019B082B20] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B0832A0] for node [00007F019B083200] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B083480] for node [00007F019B0833E0] got fieldsig as Ljava/lang/String;� IlGenerator: Generating compressedRefs anchor [00007F019B083610] for node [00007F019B083570] genIL() returned 1

Diagnostic files

pshipton commented 3 years ago

This problem is reported on IBM Java, not OpenJ9. 8.0.6.10 is the April quarterly update, roughly equivalent to OpenJ9 0.20.0.

There are newer versions available. Does the crash still occur with the most recent version?

pshipton commented 3 years ago

Note the best way to get support for IBM Java is via IBM support.

nikxliu commented 3 years ago

AYYYYYY, I knew that. But IBM did not support if you only use the IBMJ9 for the standalone application.

pshipton commented 3 years ago

Possibly we can help, but there isn't much point in looking at it if it's already been fixed in a later version.

nikxliu commented 3 years ago

Yes. This issue can occur on any method which compiled by the JIT. It is interesting. I had added the -Xnocompressedrefs to the application's start command. The issue did not happened again in past two days. I wish this parameter can help to resolve this question.

nikxliu commented 3 years ago

If this issue is going to happened again. I will suggest developer use the the newest openj9 or other hotspot jdk to test.