IV00030: CRASH WHEN ATTEMPTING TO LOAD A CORRUPTED CLASS

APAR status

• Closed as program error.

Error description

• Error Message: When attempting to load a corrupted class the JVM
  will either crash (stacktrace below) or generate an Out Of
  Memory Error
  .
  Stack Trace: memcpy ()
  readAttributes ()
  readMethods ()
  j9bcutil_readClassFileBytes ()
  j9bcutil_createRomClassEndian ()
  j9bcutil_createRomClass ()
  callDynamicLoader ()
  internalLoadROMClass ()
  
  createROMClassFromClassFile ()
  internalDefineClass ()
  defineClassCommon ()
  .
  

Local fix

• Ensure class is not corrupted
  

Problem summary

• The problem is caused by a corrupted class file.
  

Problem conclusion

• This defect will be fixed in:
  6.0.0 SR10
  5.0.0 SR12 FP3
  .
  The JVM has been updated to be more vigilant when attempting to
  load class files
  .
  To obtain the fix:
  Install build 20110212 or later
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

  IV00020

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  JAVA 5 J9 COMMO

• Fixed component ID

  620500127

Applicable component levels

• R500 PSY

     UP