APAR status
Closed as program error.
Error description
Error Message: A SIGSEGV or 0C4 ABEND is raised in a JIT-compiled method, or in a function of the JIT module that is called by JIT-compiled code. Analysis of the JIT-compiled code shows that an incorrect value has been loaded into a register with the ICM (insert character under mask) instruction. . Stack Trace: jitInstanceOf com/ibm/db2/jcc/t2zos/T2zosPreparedStatement.a com/ibm/db2/jcc/t2zos/T2zosPreparedStatement.a com/ibm/db2/jcc/t2zos/T2zosPreparedStatement.b com/ibm/db2/jcc/am/io.b com/ibm/db2/jcc/am/io.dc .
Local fix
This issue can be worked around by excluding the problematic method from JIT compilation, with the following option: -Xjit:exclude={com/ibm/db2/jcc/t2zos/T2zosPreparedStatement.a*}
Problem summary
The problem is caused by the incorrect use of a peephole optimization that exploits the ICM instruction. This problem only affects JVMs on System z.
Problem conclusion
This defect will be fixed in: 6.0.0 SR14 5.0.0 SR17 6.0.1 SR6 7.0.0 SR5 . The JIT compiler has been updated to make the necessary checks before applying the optimization.
Temporary fix
Comments
APAR Information
APAR number
IV37226
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
2013-02-26
Closed date
2013-03-04
Last modified date
2013-03-04
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:
04 March 2013