IV73846: SIGFPE OR ABEND DUE TO DIVISION BY ZERO IN JAVA JIT COMPILER

APAR status

• Closed as program error.

Error description

• Error Message: A SIGFPE or an ABEND is raised in the Java
  Just-In-Time compiler module (libj9jit) due to an attempt to
  divide by zero.
  .
  Stack Trace: setEdgeFrequenciesOnNode
  TR_CFG::setBlockFrequenciesBasedOnInterpreterProfiler
  TR_CFG::propagateFrequencyInfoFromExternalProfiler
  TR_IProfiler::setBlockAndEdgeFrequencies
  TR_CFG::setFrequencies
  TR_CFG::propagateColdInfo
  TR_EstimateCodeSize::estimateCodeSize
  .
  

Local fix

• This issue can be avoided by preventing the compilation of the
  failing method with the -Xjit:exclude={...} option.
  

Problem summary

• The problem is caused by the JIT compiler incorrectly attempting
  to divide by zero during compilation. One instance of this
  problem was fixed in APAR IV67304. This APAR addresses the
  remaining instances.
  

Problem conclusion

• The JIT compiler has been updated to prevent divisions by zero.
  .
  This APAR will be fixed in the following Java Releases:
     6 R1 SR8 FP7   (6.1.8.7)
     7    SR9 FP10  (7.0.9.10)
     8    SR1 FP10  (8.0.1.10)
  .
  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 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

• R260 PSY

     UP

• R130 PSY

     UP