IV78339: JVM CRASHES COMPILING A METHOD ON X86 PLATFORMS

APAR status

• Closed as program error.

Error description

• Error Message: A segmentation error is raised by the JIT
  compiler during code generation
  .
  Stack Trace: TR_X86MemoryReference::initialize
  generateX86MemoryReference
  TR_X86Machine::reverseGPRSpillState
  TR_X86Machine::coerceGPRegisterAssignment
  TR_X86RegisterDependencyGroup::assignRegisters
  .
  This problem can only occur on the x86 platform
  

Local fix

Problem summary

• Under certain circumstances it is possible for the JIT
  compiler's register assigner to get confused while generating
  code for an array store runtime check, resulting in a crash.
  

Problem conclusion

• The JIT x86 code generator has been modified to ensure the
  correct register dependencies are propagated preventing the
  confusion leading to the crash.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR2 (8.0.2.0)
  .
  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:

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

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