IV98626: CRASH IN JIT

APAR status

• Closed as program error.

Error description

• Error Message: A SIGSEGV/GPF is received when the JIT is
  compiling a method
  .
  Stack Trace: TR_J9Method::TR_J9Method
          TR_ResolvedJ9Method::TR_ResolvedJ9Method
          TR_ResolvedJ9Method::createResolvedMethodFromJ9Method
          TR_ResolvedJ9Method::getResolvedInterfaceMethod
          CollectImplementors::visitSubclass
          TR_SubclassVisitor::visitSubclasses
          TR_SubclassVisitor::visit
          TR_ClassQueries::collectImplementorsCapped
          TR_PersistentCHTable::findSingleInterfaceImplementer
          TR_InvariantArgumentPreexistence::processIndirectCall
          TR_InvariantArgumentPreexistence::processNode
          TR_InvariantArgumentPreexistence::perform
          TR_OptimizerImpl::performOptimization
          TR_OptimizerImpl::optimize
          TR_ResolvedMethodSymbol::genIL
          TR_Compilation::compile
  .
  

Local fix

Problem summary

• The problem occurs when the JIT compiler is trying to find the
  implementation of an interface and gets a NULL pointer on a
  default conflict method.
  

Problem conclusion

• The JVM has been updated to properly handle the default conflict
  method.
  .
  This APAR will be fixed in the following Java Releases:
     8    SR5       (8.0.5.0)
  .
  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:

Fix information

• Fixed component name

  J9 COMMON CODE

• Fixed component ID

  620700127

Applicable component levels

• R270 PSY

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