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 SR16 FP3 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
IV37225
Reported component name
JIT
Reported component ID
620700124
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-02-26
Closed date
2013-03-04
Last modified date
2013-06-13
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 PSY
UP
R260 PSY
UP
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Document Information
Modified date:
13 June 2013