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MF63642 - OSP-OTHER-THREADS-UNPRED GIANT FAULT HANDLER DEADLOCKS ON RE

PTF ( Program Temporary Fixes ) Cover letter


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Abstract

OSP-OTHER-THREADS-UNPRED GIANT FAULT HANDLER DEADLOCKS ON RE


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
NONE



NOTICE:
-------
Application of this PTF may disable or render ineffective programs that
use system memory addresses not generated by the IBM translator,
including programs that circumvent control technology designed to limit
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for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

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Code', the terms of which were provided in a printed document that was
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APAR Error Description / Circumvention

-------------------------------------------------
The stack extension interrupt handler held a Licensed Internal
Code heap gate while issuing VL02000606.  The code logging the
VL02000606 attempted to allocate additional heap storage in
order to create an event message, but the allocation of heap
storage was stuck waiting on the same gate.  This thread held a
valuable heap resource that other threads were waiting for.  The
result was a system deadlock.

CORRECTION FOR APAR 'MA46230' :
-------------------------------
The Licensed Internal Code stack extension interrupt handler was
updated to use a safer method to log VL02000606 that will avoid
the deadlock that was reported.

CIRCUMVENTION FOR APAR 'MA46230' :
----------------------------------
None.


Activation Instructions

None.




Special Instructions

None.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
     NONE

Summary Information

System.............................. i
Models..............................
Release............................. V7R3M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA46230
Superseded by:......................
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C7283730


System i Support

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Document information

More support for: i family

Software version: V7R3M0

Operating system(s): OS/400

Reference #: MF63642

Modified date: 26 June 2017