IV87060: UNABLE TO ANALYSE AIX NODE.JS CORE DUMPS WITH IDDE TOOLING

APAR status

• Closed as program error.

Error description

• Error Message: Problem running command:
  com.ibm.j9ddr.NullPointerDereference: Memory Fault reading
  0x00000000 :
  .
  Stack Trace: com.ibm.j9ddr.NullPointerDereference: Memory Fault
  reading 0x00000000 :
           at
  com.ibm.j9ddr.node4.pointer.generated.v8.internal.HeapPointer.ro
  ots_EA(HeapPointer.java:1545)
           at
  com.ibm.j9ddr.node4.helpers.HeapObject.isHashTable(HeapObject.ja
  va:287)
           at
  com.ibm.j9ddr.node4.helpers.HeapObject.isDictionary(HeapObject.j
  ava:293)
           at
  com.ibm.j9ddr.node4.helpers.JSObject.hasFastProperties(JSObject.
  java:137)
           at
  com.ibm.j9ddr.node4.helpers.JSObject.getProperties(JSObject.java
  :201)
           at
  com.ibm.java.diagnostics.idde.commands.ddr.node.node4.NodeBuffer
  sCommand.subrun(NodeBuffersCommand.java:97)
           at
  com.ibm.java.diagnostics.commands.ddr.BaseDDRCommand.run(BaseDDR
  Command.java:104)
           at
  com.ibm.java.diagnostics.utils.Context.tryCommand(Context.java:1
  95)
           at
  com.ibm.java.diagnostics.utils.Context.tryCommand(Context.java:2
  34)
           at
  com.ibm.j9ddr.plugins.DDRContext.execute(DDRContext.java:175)
           at
  com.ibm.java.diagnostics.idde.system.CombinedContext.execute(Com
  binedContext.java:336)
           at
  com.ibm.java.diagnostics.idde.system.SessionJob.execute(SessionJ
  ob.java:60)
           at
  com.ibm.java.diagnostics.idde.system.WorkerThread.processQueue(W
  orkerThread.java:74)
           at
  com.ibm.java.diagnostics.idde.system.WorkerThread.run(WorkerThre
  ad.java:55)
  .
  This problem will not affect Node.js runtime
  functionality/capability for executing applications, but
  compromises post-mortem analysis (and our serviceability) with
  our IBM diagnostic tooling if the unforeseen happens and the
  process should crash.
  

Local fix

Problem summary

• The problem was caused by a mistake made when creating the 4.X.X
  build job, resulting in the BLOb meta-data for a different
  platform being included in the AIX Node.js build.  Some IDDE
  commands were working, but others were completely or partially
  broken (including nodebuffers, which produced the error shown
  above).
  

Problem conclusion

• Our build step, packaging the correct architecture component,
  has been corrected.
  .
  This APAR will be fixed in the following IBM SDK for Node.js
  Releases:
     4.4.6.0
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
             http://www.ibm.com/developerworks/web/nodesdk/
  

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

  NODE.JS

• Fixed component ID

  AIMNDJS00

Applicable component levels

• R421 PSY

     UP