APAR status
Closed as program error.
Error description
Error Message: a gpf/SIGSEGV/0C4 abend is raised by the JIT compiler . Stack Trace: OMR::Z::MemoryReference::populateAddTree OMR::Z::TreeEvaluator::aladdEvaluator OMR::CodeGenerator::evaluate OMR::Z::CodeGenerator::gprClobberEvaluate OMR::Z::TreeEvaluator::primitiveArraycopyEvaluator OMR::Z::TreeEvaluator::arraycopyEvaluator OMR::CodeGenerator::evaluate OMR::Z::TreeEvaluator::treetopEvaluator OMR::CodeGenerator::evaluate . This problem can only happen on IBM Z systems (both z/OS and linux on Z) The problem is known to occur with java/nio/DirectByteBuffer.put(<OSB>BII)Ljava/nio/ByteBuffer; and java/nio/Bits.copyFromArray(Ljava/lang/Object;JJJJ)V which might inline DirectByteBuffer.put
Local fix
Problem summary
To generate code for an array copy associated with a call to Unsafe.copyMemory, for a specific case the code generator assumed the index register would always be set, but the base register could be set instead. As a result a null dereference occurred when trying to access the data structure representing the index register when the equivalent structure for the base register should have been used.
Problem conclusion
This problem has been addressed by https://github.com/eclipse/omr/pull/4205 . This APAR will be fixed in the following Java Releases: 8 SR5 FP41 (8.0.5.41) . Contact your IBM Product's Service Team for these Service Refreshes and Fix Packs. For those running stand-alone, information about the available Service Refreshes and Fix Packs can be found at: https://www.ibm.com/developerworks/java/jdk/
Temporary fix
Comments
APAR Information
APAR number
IJ18497
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2019-08-21
Closed date
2019-08-21
Last modified date
2019-08-21
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
JIT
Fixed component ID
620700124
Applicable component levels
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
21 August 2019