APAR status
Closed as program error.
Error description
Error Message: A common symptom is for the Garbage Collector to report this assertion failure: "Object neither in heap nor stack-allocated" However a crash during Garbage Collection is also possible. . Stack Trace: . This problem can only happen if a java agent or debugger is attached. This problem can happen at all optimization levels except for noOpt.
Local fix
The problem can be avoided with the following Java command line option: -Xjit:disableInlining Note, this likely will significantly decrease performance.
Problem summary
When inlining a method into another method when the JRE has been launched with an agent or debugger attached, information necessary for the JIT compiler to keep track of Monitors was incorrectly propagated to one of the code paths which caused the JIT compiler to generate incorrect metadata used by Garbage Collection to keep track of objects in JIT compiled methods. The incorrect metadata for the Monitor caused the Garbage Collector to treat a register as if it contained the Monitor object when it did not, causing the Garbage Collector to throw an assertion error or crash.
Problem conclusion
The JIT compiler has been updated to correctly propagate information in the code paths specific to this problem. . This APAR will be fixed in the following Java Releases: 7 R1 SR4 FP5 (7.1.4.5) 8 SR4 FP5 (8.0.4.5) . 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
IV94682
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-03-29
Closed date
2017-03-29
Last modified date
2017-03-29
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
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Document Information
Modified date:
29 March 2017