VM TCP/IP Abends Due to an Out of Storage Condition
APAR Identifier ...... PQ63321 Last Changed ........ 02/07/31
VM TCP/IP ABENDS DUE TO AN OUT OF STORAGE CONDITION
Symptom ...... IN INCORROUT Status ........... CLOSED PER
Severity ................... 2 Date Closed ......... 02/07/23
Component .......... 5735FAL00 Duplicate of ........
Reported Release ......... 430 Fixed Release ............ 999
Component Name TCP/IP V2 FOR V Special Notice HIPER
Current Target Date .. Flags RESTART/BOOT/IPL
SCP ...................
Platform ............ PERVASIVE
Status Detail: SHIPMENT - Packaged solution is available for
shipment.
PE PTF List:
PTF List:
Release 430 : UQ68339 available 02/07/25 (1000 )
Parent APAR:
Child APAR list:
ERROR DESCRIPTION:
VM TCPIP abends because of an out of storage condition. Looking
at the DUMP, storage is full with same control block and data:
00000000 009A2F98 00000000 FFFFFF68 *.......q........*
C2D9C5D8 00000000 00000002 00000000 *BREQ............*
00000000 00000000 00000000 00000000 *................*
LOCAL FIX:
PROBLEM SUMMARY:
****************************************************************
* USERS AFFECTED: Users of QDIO devices, including *
* Hipersockets and Gigabit Ethernet networks *
****************************************************************
* PROBLEM DESCRIPTION: VM TCP/IP storage use increases until *
* eventually it runs out of storage, *
* usually with message VIRTUAL STORAGE *
* CAPACITY EXCEEDED. *
****************************************************************
* RECOMMENDATION: APPLY PTF *
****************************************************************
As of TCP/IP 430, the Block Request control block is preserved
rather than being released and reacquired. In one instance, an
existing Block Request pointer was overlaid by another, losing
the associated storage. Eventually, the amount of lost storage
caused the failure.
PROBLEM CONCLUSION:
Code has been changed to preserve the original block so that no
storage is lost.
TEMPORARY FIX:
COMMENTS:
MODULES/MACROS: TCPIP TCQDIO
SRLS: NONE
RTN CODES:
CIRCUMVENTION:
MESSAGE TO SUBMITTER:
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