IV39188: JDMPVIEW 'INFO THREAD' REPORTS CORRUPT JAVA STACKS

APAR status

• Closed as program error.

Error description

• Error Message: Running the jdmpview "info thread *" command
  shows several threads with corrupt Java stacks, for example:
     associated Java thread:
      name:          WebSphere WLM Dispatch Thread t=009c2360
      Thread object: com/ibm/ws/util/ThreadPool$ZOSWorker @
  0x29585c28
      Priority:      5
      Thread.State:  RUNNABLE
      JVMTI state:   ALIVE RUNNABLE
      Java stack frames:
       <corrupt data encountered>
  .
  Stack Trace: N/A
  .
  

Local fix

Problem summary

• The code in jdmpview failed to check whether any native stack
  frames were found before accessing the first frame in the list.
  

Problem conclusion

• This defect will be fixed in:
  6.0.1 SR6
  7.0.0 SR5
  .
  jdmpview has been updated to correctly process the thread
  stacks.
  

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