IV01623: SEGMENTATION FAULT DURING PARALLEL SCAVENGE

APAR status

• Closed as program error.

Error description

• Error Message: A Segmentation fault occurs during a Parallel
  Scavenge with heaps under 28GB using the gencon GC policy
  .
  Stack Trace: void
  MM_ParallelScavenger::backoutFixupAndReverseForwardPointersInSur
  vivor(MM_EnvironmentStandard *env)
  .
  

Local fix

• Disable compressed references using -Xnocompressedrefs at the
  end of the commandline
  

Problem summary

• The problem occurs during the backout of a Parallel Scavenge
  using the Gencon GC policy.
  

Problem conclusion

• This defect will be fixed in:
  6.0.1 FP2
  .
  The JVM has been updated to ensure the backout occurs correctly
  .
  To obtain the fix:
  Install build 20110603 or later
  

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

• R260 PSY

     UP