APAR status
Closed as program error.
Error description
Error Message: JVMCDRT000E Unable to locate JIT stack map - aborting VM JVMCDRT001E Method: 000003c5 org/eclipse/mat/tests/SameHash.hash(I)Ljava/lang/String; (@000007FEC7E06FED) 00000019 org/eclipse/mat/tests/SameHash.main(<OSB>Ljava/lang/String;)V or Unhandled exception Type=Segmentation error vmState=0x00040000 J9Generic_Signal_Number=00000004 ExceptionCode=c0000005 . Stack Trace: N/A .
Local fix
This problem can be worked around by using -Xjit:disableLoopUnroller,disableGLU option in the Java command. This option can also be applied to a specific method to reduce the impact on performance, -Xjit:{failingMethod}(disableLoopUnroller,disableGLU)
Problem summary
The crash happens because the JIT compiler generates an optimized version of Java/lang/String.hashCode()I which if is called inside a loop would corrupt a loop invariant variable.
Problem conclusion
The jit has been updated to generate the correct assembly sequence that will not corrupt the loop invariant variable. . This APAR will be fixed in the following Java Releases: 8 SR3 (8.0.3.0) . 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
IV81897
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-02-26
Closed date
2016-02-26
Last modified date
2016-02-29
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 February 2016