APAR status
Closed as program error.
Error description
Error Message: A segmentation fault is raised in libj9jit26.so; the reported VM state is vmState=0x0005ff08. This problem only occurs on System z hardware equipped with the high word facility (z196 or newer). . Stack Trace: #11 TR_S390RegisterDependencyGroup::checkDependencyGroup(TR_Instruct ion*, unsigned int, TR_CodeGenerator*) #12 0x76bc2482 in TR_S390RegisterDependencyGroup::assignRegisters(TR_Instruction*, TR_RegisterKinds, unsigned int, TR_CodeGenerator*) #13 0x76b6c58c in TR_S390LabelInstruction::assignRegistersAndDependencies(TR_Regis terKinds) #14 0x76b7097e in TR_S390Instruction::assignRegisters(TR_RegisterKinds) #15 0x76b31810 in TR_S390CodeGenerator::doRegisterAssignment(TR_RegisterKinds) #16 0x768e9284 in TR_CodeGenerator::generateCode() #17 0x7691dbd6 in TR_Compilation::generateCode() #18 0x769234c4 in TR_Compilation::compile() .
Local fix
The -Xjit:disableHighWordRA,disableHighWordGRA option will work around the problem.
Problem summary
The problem occurs when register allocation changes the assignment of a high-word register, but fails to update related data structures correctly on one code path.
Problem conclusion
This defect will be fixed in: 7.0.0 SR6 6.0.1 SR7 . The JIT compiler has been updated to assign high-word registers correctly.
Temporary fix
Comments
APAR Information
APAR number
IV48871
Reported component name
JIT
Reported component ID
620700124
Reported release
260
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-09-16
Closed date
2013-09-18
Last modified date
2013-09-18
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
R260 PSY
UP
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Document Information
Modified date:
18 September 2013