IV50394: CRASH IN COMPILED CODE WHILE RUNNING IN FULL SPEED DEBUG MODE

APAR status

• Closed as program error.

Error description

• Error Message: The VM crashes in compiled code while running
  with full speed debug mode turned on.
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• This error only occurs while running in debugging mode. During
  class redefinition the JIT was not properly patching methods
  while running under full speed debug mode.  This could result in
  a compiled method branching to an invalid method that was
  compiled before class redefinition.  Producing JIT verbose logs
  can help identify this error.  If a method is compiled more than
  once during full speed debug mode, and is on top of the stack
  trace produced by the crash, it is possible that the method was
  not properly patched after class redefinition.
  

Problem conclusion

• This defect will be fixed in:
  7.0.0 SR6
  6.0.1 SR7
  6.0.0 SR15 FP1
  .
  The code that patches methods is properly reset when class
  redefinition occurs.
  

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

• R260 PSY

     UP

• R600 PSY

     UP