PM00573: CRASH IN FASTLOCALMARK()

APAR status

• Closed as program error.

Error description

• Error Message: Crash in fastLocalMark()
  .
  Stack Trace: Native stack for thread b1449ba0 - GC Helper 3
   ============================
          at 0xb7d6e023 in fastLocalMark+0xe3 (libjvm.so)
          at 0xb7d6e802 in parallelMark+0x112 (libjvm.so)
          at 0xb7d6ebd3 in parallelMarkHelper+0x43 (libjvm.so)
          at 0xb7d65321 in gcHelper+0x1d1 (libjvm.so)
          at 0xb7ddda0a in xmExecuteThread+0x15a (libjvm.so)
          at 0xb7dd62aa in threadStart+0x1a (libjvm.so)
          at 0xb7bc1433 in _start+0x2e3 (libhpi.so)
  .
  

Local fix

Problem summary

• This crash was due to an assertion failure, while validating
  each of the references of a classblock.  When st_verify is
  enabled it makes a call to the ValidHandle(). This tries to
  validate the objects on the java heap by checking if the object
  is within the middleware
  heap, it is grained, and the alloc bit is set. If any of the
  condition are not met then the object is invalidated.
  If the object is a class block, then the references of the
  classblock are validated too. In the process of validation, the
  lclassname is found to be invalid, resulting in a sysassert.
  The class block which was being validated was going to be freed
  and already in the freeclass list and the cb was wrongly
  validated.
  

Problem conclusion

• This defect will be fixed in:
  1.4.2 SR13 FP3
  .
  The code for verifyHandle(), not to validate a class which is
  already made as unreferenced.  This only affects the PD build.
  .
  To obtain the fix:
  Install build 20090902 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

  JAVA(1.3/1.4 CO

• Fixed component ID

  5648C9800

Applicable component levels

• R42A PSN

     UP

• R42L PSN

     UP

• R42W PSN

     UP

• R420 PSN

     UP