IV85004: A SEGMENTATION FAULT IS RAISED WHILE THE USER IS DEBUGGING JAVA CODE OR AN AGENT IS ATTACHED

APAR status

• Closed as program error.

Error description

• Error Message: A segmentation fault is raised while the user is
  debugging Java code or an agent is attached
  .
  Stack Trace: The following is one of the possible stack traces
  {libj9jit28.so}{buildInlineStackFrames}
  {libj9jit28.so}{performDecompile}
  {libj9jit28.so}{jitDecompileMethod}
  {libj9jit28.so}{c_jitDecompileOnReturn}
  {libj9jit28.so}{jitDecompileOnReturn0}
  .
  

Local fix

• this problem can be worked around with the Java option
  -Xjit:disableOSR
  

Problem summary

• The crash occasionally occurs when the JVM hits a Java program
  breakpoint and tries to replace a compiled method frame with an
  interpreted frame . In some special cases, the JIT Compiler can
  provide more local variables than the interpreter expected and
  the program crashes because of this inconsistency.
  

Problem conclusion

• The JIT Compiler has been updated to provide the same number of
  local variables as the interpreter expected in those special
  cases.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR3 FP10 (8.0.3.10)
   7 SR9 FP50 (7.0.9.50)
   7 R1 SR3 FP50 (7.1.3.50)
   6 R1 SR8 FP30 (6.1.8.30)
  .
  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

     UP

• R260 PSY

     UP