APAR status
Closed as program error.
Error description
Error Message: Floating point error (SIGFPE) reported upon JVM startup on a z13 (or later) processor. . Stack Trace: 0x000000007ca00356 {libj9vm29.so}{ZJ9SYM1} <OSB> 0x000000007ca08ca4 {libj9vm29.so}{sendClinit} 0x000000007cadf7ac {libj9vm29.so}{initializeImpl} 0x000000007cae1258 {libj9vm29.so}{classInitStateMachine(J9VMThread*,J9Class*,J9Clas sInitState)} 0x000000007cae177e {libj9vm29.so}{initializeClass} 0x000000007a61eb46 {libjclse7b_29.so}{initializeRequiredClasses} 0x000000007a66055a {libjclse7b_29.so}{standardInit} 0x000000007a674996 {libjclse7b_29.so}{J9VMDllMain} .
Local fix
This problem can be worked around by specifying the -Xjit:disableZ13 command line to the JVM. Note that specifying this option will prevent the JIT compiler from generating any z13 instructions which may slightly degrade the performance of an average workload.
Problem summary
If the `LOADxx MACHMIG VEF` load parameter is set at IPL time the user has requested to disable the VEF support in z/OS, as such the CVTVEF bit will not be enabled for the system. The JVM was not previously testing the CVTVEF flag for vector support and was executing vector instructions when the user has disabled them. This causes a SIGFPE on first execution of any vector instruction.
Problem conclusion
The JVM has been updated to check the CVTVEF bit. . This APAR will be fixed in the following Java Releases: 8 SR5 FP22 (8.0.5.22) . 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
IJ08655
Reported component name
JIT
Reported component ID
620700124
Reported release
130
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-08-20
Closed date
2018-08-20
Last modified date
2018-08-20
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
[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSC9HBA","label":"Just In Time (JIT) Compiler"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"130","Edition":"","Line of Business":{"code":"","label":""}}]
Document Information
Modified date:
20 August 2018