APAR status
Closed as program error.
Error description
Error Message: Unhandled exception Type=Segmentation error vmState=0x0005ff09 Module=libj9jit29.so Method being compiled=java/lang/ClassLoader.defineClass(Ljava/lang/String;<OS B>BIILjava/security/ProtectionDomain;)Ljava/lang/Class; . Stack Trace: TR_S390RegisterDependencyGroup::assignRegisters () TR_S390LabelInstruction::assignRegistersAndDependencies () IBM::Z::InstructionExt::assignRegisters () IBM::Z::CodeGenerator::doRegisterAssignment () TR_S390OutOfLineCodeSection::assignRegisters () TR_S390BranchInstruction::assignRegistersAndDependencies () IBM::Z::InstructionExt::assignRegisters () IBM::Z::CodeGenerator::doRegisterAssignment () OMR::CodeGenPhase::performRegisterAssigningPhase () . This problem can only occur on z Systems.
Local fix
Problem summary
The problem is with the generated code for the 'checkcast' java bytecode. The JIT module can raise a SIGSEGV when register pressure enforces register spilling when generating code for the 'checkcast' bytecode.
Problem conclusion
The JIT code has been updated to prevent the segmentation error from occurring when generating code associated with the 'checkcast' bytecode regardless of the state of registers. . This APAR will be fixed in the following Java Releases: 8 SR2 (8.0.2.0) . 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
IV77915
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-10-09
Closed date
2015-10-09
Last modified date
2015-10-09
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
R130 PSY
UP
[{"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:
09 October 2015