IV84325: A CRASH OR ASSERT IN THE GC IS ENCOUNTERED OR INVALID VALUES ARE BEING GENERATED IN A JIT COMPILED METHOD

APAR status

• Closed as program error.

Error description

• Error Message: Crash in the GC, JIT compiled method or VM is
  possible as well as invalid values being passed around a JIT
  compiled method.
  .
  Stack Trace: N/A
  .
  This issue only occurs on 64-bit Z series (zOS64 and zLinux64)
  platforms where the use of high word registers is enabled. All
  other platforms are unaffected by this issue.
  

Local fix

• This issue can be worked around using the
  -Xjit:disableHighWordRA option.
  

Problem summary

• The JIT compiler encounters an invalid register state during
  register allocation when an associated internal data structure
  becomes fully saturated. This could occur in a block of code
  where many values are live at the same time.
  

Problem conclusion

• The JIT has been updated to prevent the generation of invalid
  register state during register allocation in the scenarios where
  this problem can occur.
  .
  This APAR will be fixed in the following Java Releases:
   7 SR10 (7.0.10.0)
   8 SR3 FP10 (8.0.3.10)
   7 R1 SR4 (7.1.4.0)
   6 R1 SR10 (6.1.10.0)
  .
  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

• R260 PSY

     UP

• R130 PSY

     UP