IJ02284: DIVISION BY ZERO IN JIT COMPILER

APAR status

• Closed as program error.

Error description

• Error Message: The JVM will report a Floating Point Exception
  due to a SIGFPE and the JVM will terminate.
  .
  Stack Trace: TR_IPBCDataCallGraph::getData(TR_Compilation*)
  TR_IProfiler::getProfilingData
  TR_IProfiler::getBranchCounters
  TR_BranchProfileInfoManager::getBranchCounters
  TR_CFG::getBranchCounters
  TR_CFG::getInterpreterProfilerBranchCountersOnDoubleton
  TR_CFG::setBlockFrequenciesBasedOnInterpreterProfiler
  .
  This problem cannot happen on POWER
  

Local fix

• N/A
  

Problem summary

• A division calculation is done in the JIT compiler as part of
  its heuristics. In rare cases the denominator can be zero and
  this can cause hardware exceptions on some platforms.
  

Problem conclusion

• The JIT compiler has been updated to prevent the possibility of
  division by zero here.
  .
  This APAR will be fixed in the following Java Releases:
     7 R1 SR4 FP20  (7.1.4.20)
     8    SR5 FP6   (8.0.5.6)
     7    SR10 FP20 (7.0.10.20)
     6 R1 SR8 FP60  (6.1.8.60)
  .
  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

• R130 PSY

     UP

• R260 PSY

     UP