OA31106: ABEND=S878,REASON=00000010

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND=S878,REASON=00000010 due to NLM not releasing lock on
  request block.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All Network File System Server NLM users     *
  ****************************************************************
  * PROBLEM DESCRIPTION: - NLM blocking request was blocked and  *
  *                        set up a new request to wait for the  *
  *                        lock available when the client closed *
  *                        the socket, the request control block *
  *                        was not freed.                        *
  *                      - During initialization, NLM callback   *
  *                        request did not get response from     *
  *                        the client and caused Network File    *
  *                        System Server hang.                   *
  *                      - For R1.9 and R1.10, Network File      *
  *                        System Server cannot be started       *
  *                        due to the reserved port not          *
  *                        available.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  - When NLM request cannot be sent due to the client closing
    the socket, all the memory allocated to this request should be
    freed.
  - During initialization, NLM callback request sent to the client
    but the client did not send the reply to the server, and the
    server waits forever for the reply.
  - For R1.9 and R1.10, Network File System Server shut down when
    the reserved port was not available.
  

Problem conclusion

• - When NLM blocking request blocked with a new request
    waiting for the lock available is ready to reply,
    the request control block will be freed if the client
    closes the socket.
  - During initialization, NLM callback request will drop the
    request if there is no response from the client.
  - For R1.9 and R1.10, Network File System Server will retry to
    bind the reserved port if the reserved port is not available.
  

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:

  UA52470 UA52471 UA52472

Modules/Macros

•    GFSAHMVS GFSAHNET GFSAHNLM GFSAHREQ GFSAIREQ
  GFSANFSD GFSANMAI GFSAPLOK GFSAPXDR GFSATCHN GFSATCPI GFSATCPM
  GFSATCPN GFSATUDP GFSAXHOS GFSAXMAI GFSAZMAI
  

Fix information

• Fixed component name

  NETWORK FILE SY

• Fixed component ID

  5695DF121

Applicable component levels

• RAN0 PSY UA52470

     UP10/04/01 P F003

• RB1N PSY UA52471

     UP10/03/31 P F003

• R19N PSY UA52472

     UP10/03/31 P F003

Fix is available

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