APAR status
Closed as program error.
Error description
Error Message: Unhandled exceptionType=Segmentation error vmState=0x00051cff . Stack Trace: The stack trace in gdb will most likely contain the following methods:._ZN15TR_VPConstraint9intersectEPS_P19TR_ValuePropagatio n ()._ZN19TR_ValuePropagation19addConstraintToListEP7TR_NodeiiP15T R_VPConstraintP12TR_HedgeTreeINS_15ValueConstraintEEb ()._ZN19TR_ValuePropagation18addBlockConstraintEP7TR_NodeP15TR_V PConstraintS1_b ()._ZN19TR_ValuePropagation13getConstraintEP7TR_NodeRbS1_ ()._Z12findConstantP19TR_ValuePropagationP7TR_Node () . N/A
Local fix
-Xjit:disableGlobalValuePropagation,disableLocalValuePropagation will prevent the crash. Any resulting performance degradation can be mitigated by limiting this option to the method being compiled at the time of the crash.
Problem summary
The Value Propagation optimization attempted to obtain type information for a certain expression in the program, and this required the optimization to obtain a lock. If the optimization was unable to acquire the lock immediately (which could occur during garbage collection), it chose to continue without the desired type information, but subsequent processing was unable to proceed without the information, and crashed.
Problem conclusion
The optimization was changed to wait for the lock, thereby ensuring that it always obtains the desired type information. . This APAR will be fixed in the following Java Releases: 7 SR9 (7.0.9.0) 7 R1 SR3 (7.1.3.0) 6 R1 SR8 FP4 (6.1.8.4) . 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
IV72272
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2015-04-15
Closed date
2015-04-15
Last modified date
2015-04-21
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:
21 April 2015