APAR status
Closed as program error.
Error description
Error Message: A Illegal Instruction exception is thrown when user run a java problem on a P7 iSeries machine. . Stack Trace: javasoft/sqe/tests/api/java/io/StreamTokenizer/STate.resetSyntax (STate.java) javasoft/sqe/tests/api/java/io/StreamTokenizer/STate.resetState( STate.java:104(Compiled Code)) javasoft/sqe/tests/api/java/io/StreamTokenizer/STate.testState(S Tate.java:407) javasoft/sqe/tests/api/java/io/StreamTokenizer/commentCharTests. StreamTokenizer0050(commentCharTests.java:48) sun/reflect/NativeMethodAccessorImpl.invoke0(Native Method) sun/reflect/NativeMethodAccessorImpl.invoke(NativeMethodAccessor Impl.java:95) .
Local fix
This issue can be worked around using the -Xjit:disableAutoSIMD option.
Problem summary
The problem is caused when a iSeries machine trying to execute a SIMD load/store on a non dword-aligned address. This issue is only seen on iSeries with Power 7 cpu, because on Power 7 system, such instructions requires extra support from OS. Those instructions are not safe for IBM iSeries.
Problem conclusion
The JIT has been updated to prevent the crash from occurring by only generate safe SIMD load/store instructions on Power 7. . This APAR will be fixed in the following Java Releases: 8 SR2 FP10 (8.0.2.10) . 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
IV80395
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2016-01-15
Closed date
2016-01-15
Last modified date
2016-01-15
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:
15 January 2016