PH43421: AMPX036I TCPIP ASSERTION ERRORS IN QDIOUNPA ROUTINE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Assertion errors may occur while unpacking a QDIO input buffer
  when a packet is either malformed or invalid.  Repeated
  assertion errors may result in a program interrupt.
  
  The error log would contain a QDIO transmission error:
  
  
  
      DTCQDI001I QDIO device DEV@1100 device number 1100:
      DTCQDI012E   encountered a transmission error
      DTCQDI013E Input queue 80000000 location: 02 error code: 00
                   index 00
  
  
  Followed by TCPIP assertion errors that could look similar to
  this:
  
  
  
  
  
  AMPX036I  ASSERTION FAILURE CHECKING ERROR
        TRACE BACK OF CALLED ROUTINES
   ROUTINE                          STMT AT ADDRESS IN MODULE
   QdioUnpa                         1812    00E1373A
   QDIO_Pol                          334    00E12A90
   Schedule                          802    00CA8704
   <MAIN-PROGRAM>                     14    00BE11FE   TCPIP
   VSPASCAL                                 00E3EAEA
  
  
  AMPX014I PROTECTION EXCEPTION
        TRACE BACK OF CALLED ROUTINES
   ROUTINE                          STMT AT ADDRESS IN MODULE
   QdioUnpa                          948    00E133DA
   QDIO_Pol                          334    00E12A90
   Schedule                          802    00CA8704
   <MAIN-PROGRAM>                     14    00BE11FE   TCPIP
   VSPASCAL                                 00E3EAEA
  
  
  AMPX036I ASSERTION FAILURE CHECKING ERROR
        TRACE BACK OF CALLED ROUTINES
   ROUTINE                          STMT AT ADDRESS IN MODULE
   QdioUnpa                         1790    00E13724
   QDIO_Pol                          334    00E12A90
   Schedule                          802    00CA8704
   <MAIN-PROGRAM>                     14    00BE11FE   TCPIP
   VSPASCAL                                 00E3EAEA
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All z/VM TCPIP users.                        *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  When a packet is either malformed or invalid, assertion errors
  may occur while unpacking the QDIO Input buffer.
  

Problem conclusion

• When improper or invalid packets are received, the QDIO unpack
  routine in FPQDIO is incorrectly handling them.  This results
  in one or more assertion errors.
  FPQDIO has been updated to correctly handle improper and invalid
  packets.
  

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:

  UI79479 UI79480

Modules/Macros

• FPIPUP   FPQDIO   MSTCP
  

Fix information

• Fixed component name

  TCP/IP FOR Z/VM

• Fixed component ID

  5735FAL00

Applicable component levels

• R710 PSY UI79479

     UP22/03/02 I 1000

• R720 PSY UI79480

     UP22/03/02 P 2201

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.