APAR status
Closed as program error.
Error description
Error Message: N/A . Stack Trace: Stack will likely include doStackSlot__31MM_ParallelScavengerRootScannerFPP8J9ObjectPvPCv . the problem can only occur when object synchronization is used and two GC cycles execute during a single execution of a method.
Local fix
If the method associated with the bad o-slot can be determined from either the error log or snap trace output then the method can be excluded from jit compilation using -Xjit:exclude={package/classname.methodname(*}
Problem summary
Under some circumstances, the JIT could incorrectly analyze a code path involving an exception throw and catch and could leave stale object address in a stack slot after the GC runs. The stale object address value could then cause problems for a second GC if the method in question keeps running across 2 GC cycles.
Problem conclusion
The JIT's live monitor analysis has been fixed so that throw-catch paths are processed accurately. . This APAR will be fixed in the following Java Releases: 7 R1 SR3 FP50 (7.1.3.50) 6 R1 SR8 FP30 (6.1.8.30) 7 SR9 FP50 (7.0.9.50) 8 SR3 FP10 (8.0.3.10) 6 SR16 FP40 (6.0.16.40) . 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
IV84322
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-05-02
Closed date
2016-05-02
Last modified date
2016-12-15
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
R260 PSY
UP
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Document Information
Modified date:
15 December 2016