APAR status
Closed as program error.
Error description
Error Message: A SIGSEGV/ABEND is raised when a JIT-compiled Java method attempts to call System.arraycopy with an unusual length or array index. The number has just been incremented from -1 to 0. The problem may also manifest itself as a crash in other locations, or incorrect computation involving a mixture of ints and longs. The problem only affects 64-bit 390, on both z/Linux and z/OS. . Stack Trace: N/A .
Local fix
This issue can be avoided by setting the environment variable TR_NRECORDLGFR=1 before launching the JVM.
Problem summary
The problem is caused when a 32-bit (int) value is sign-extended and assigned to a 64-bit (long) global register, which is later clobbered by an int operation, and then finally used for a long operation again. Under some circumstances, the JIT compiler may optimize away the required sign extension incorrectly.
Problem conclusion
This defect will be fixed in: 6.0.0 SR8 5.0.0 SR11 FP2 . The JIT compiler has been updated to correct the optimization. . To obtain the fix: Install build 20100126 or later
Temporary fix
Comments
APAR Information
APAR number
IZ68006
Reported component name
JIT
Reported component ID
620700124
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-01-15
Closed date
2010-01-26
Last modified date
2010-04-29
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
R600 PSN
UP
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Document Information
Modified date:
29 April 2010