IV46146: CRASH VERIFYING BYTECODES OF CLASS STORED IN THE SHARED CLASSES CACHE

APAR status

• Closed as program error.

Error description

• Error Message: none
  .
  Stack Trace: j9bcv26!verifyBytecodes
  j9bcv26!j9rtv_verifyBytecodes
  j9bcv26!j9bcv_verifyBytecodes
  jclse7b_26!java_lang_J9VMInternals_verifyImpl
  j9ute26!logTracePoint
  j9ute26!utsTraceV
  j9trc26!j9Trace
  j9thr26!j9thread_monitor_exit
  j9vm26!resolveClassRef
  j9vm26!resolveHelper
  j9vm26!javaProtectedThreadProc
  j9prt26!j9sig_protect
  j9vm26!javaThreadProc
  j9thr26!thread_wrapper
  msvcr100!_callthreadstart
  msvcr100!_threadstart
  kernel32!BaseThreadStart
  .
  N/A
  

Local fix

• Disable Shared classes by removing the existing -Xshareclasses
  option or by adding -Xshareclasses:none to the end of the JVM
  Parameters
  

Problem summary

• The crash occurs when verifying "dead code" in classes that have
  been stored in the shared classes cache using the StackMapTable
  attribute.
  

Problem conclusion

• This defect will be fixed in:
  7.0.0 SR6
  6.0.1 SR7
  6.0.0 SR15
  .
  The JVM has been updated to properly handle dead code in classes
  stored in the shared classes cache.
  

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

• R600 PSY

     UP