APAR status
Closed as program error.
Error description
Error Message: An IllegalMonitorStateException is thrown by a Java method that has been re-compiled at higher optimization levels. The throwing method likely has been inlined into a loop in its caller. . Stack Trace: N/A .
Local fix
This issue can be worked around using the -Xjit:disableRedundantMonitorElimination option.
Problem summary
This problem occurs when the inlining of a virtual method is disabled for correctness, e.g. after the loading of a new class that implements the same method. If the inlined call site is on a code path that locks multiple objects, the compensating code generated by the JIT compiler incorrectly attempts to unlock the same object twice.
Problem conclusion
This defect will be fixed in: 6.0.0 SR12 5.0.0 SR16 6.0.1 SR5 7.0.0 SR4 . The JIT compiler has been updated to generate correct code for the non-inlined virtual method call sequence.
Temporary fix
Comments
APAR Information
APAR number
IV33529
Reported component name
JAVA 5 JIT
Reported component ID
620500124
Reported release
500
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-12-17
Closed date
2012-12-18
Last modified date
2012-12-18
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
JAVA 5 JIT
Fixed component ID
620500124
Applicable component levels
R500 PSY
UP
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Document Information
Modified date:
18 December 2012