IJ21488: CRASH DURING JIT COMPILATION

APAR status

• Closed as program error.

Error description

• Error Message: The JVM exits unexpectedly, with crash data
  written as per operating system and JVM configuration.
  .
  Stack Trace: The javacore will show a crash in module libj9jit,
  and one or more of the registers will hold the 32 bit value for
  -1 (00000000FFFFFFFF). Use of a native debugger will show the
  crashing method is
  TR_J9VMBase::getResolvedVirtualMethod(TR_OpaqueClassBlock*, int,
  bool), called during inlining.
  .
  

Local fix

• The method that was being compiled can be excluded from JIT
  compilation. e.g. if the method was in package a.b, class C and
  called 'method':
  -Xjit:exclude={a/b/C.method(*},dontInline={a/b/C.method(*}
  

Problem summary

• An error in the JIT compiler resulted in an incorrect vtable
  offset being passed to getResolvedVirtualMethod.
  

Problem conclusion

• The JIT has been modified so that a valid vtable offset is
  stored in all cases.
  For more details:
  https://github.com/eclipse/openj9/pull/6993
  .
  This APAR will be fixed in the following Java Releases:
     8    SR6 FP5   (8.0.6.5)
  .
  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