IBM Support

MF65275 - OSP-OTHER-INCORROUT NETSERVER NOT RESPONDING AND QZLSFILET I

PTF ( Program Temporary Fixes ) Cover letter


Order this fix

Abstract

OSP-OTHER-INCORROUT NETSERVER NOT RESPONDING AND QZLSFILET I


Pre/Co-Requisite PTF / Fix List

REQ  LICENSED           PTF/FIX  LEVEL

TYPE PROGRAM  RELEASE   NUMBER   MIN/MAX  OPTION
---- -------- --------- -------  -------  ------
CO   5770999  V7R3M0    MF64772   00/00    0000
CO   5770999  V7R3M0    MF64296   00/00    0000
DIST 5770SS1  V7R3M0    SI65556   00/00    0000



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
interactive capacity to purchased levels.  This PTF may be a prerequisite
for future PTFs.  By applying this PTF you authorize and agree to the
foregoing.

This PTF is subject to the terms of the 'IBM License Agreement for Machine
Code', the terms of which were provided in a printed document that was
delivered with the machine.

SUBJECT TO ANY WARRANTIES WHICH CAN NOT BE EXCLUDED OR EXCEPT AS EXPLICITLY
AGREED TO IN THE APPLICABLE LICENSE AGREEMENT OR AN APPLICABLE SUPPORT
AGREEMENT, IBM MAKES NO WARRANTIES OR CONDITIONS EITHER EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON INFRINGEMENT,
REGARDING THE PTF.


APAR Error Description / Circumvention

-------------------------------------------------
Instances occur where IBM i NetServer response takes longer than
usual and eventually NetServer appears to lock up and mapped
drives are not accessible. When this happens, the QZLSFILET job
is in MTXW status. After a period of time the problem clears and
NetServer operates normally.

CORRECTION FOR APAR 'MA47234' :
-------------------------------
A timing window exists in the SMB2 Read and Write request
processors where a file reference may not be released if the
client session begins close processing while the operation is in
progress.  The dangling reference can cause the session close
processing to take a long time to complete.

IBM i NetServer has been changed to ensure file references are
released.  The PTF corrects the problem.

CIRCUMVENTION FOR APAR 'MA47234' :
----------------------------------
None.

DESCRIPTION OF PROBLEM FIXED FOR APAR 'MA47236' :
-------------------------------------------------
Attempts to run certain application executable files that are
stored in IBM i NetServer shares will hang. Network activity
shows that the client is repeatedly attempting to read the same
range of data beyond the end of the executable file during the
hang.

CORRECTION FOR APAR 'MA47236' :
-------------------------------
IBM i NetServer follows Posix file system semantics that reading
past the end of file is not an error.  The read returns success
with zero bytes read.  The SMB2 protocol specification is
unclear that an error response is expected in this situation.
Samba servers handle the same condition by returning a
STATUS_END_OF_FILE error.

The IBM i NetServer SMB2 behavior has been changed to return
STATUS_END_OF_FILE if a client attempts to read beyond the end
of file.  This more closely matches the behavior of other SMB2
servers.

CIRCUMVENTION FOR APAR 'MA47236' :
----------------------------------
None.


Activation Instructions

None.




Special Instructions

ENDTCPSVR *NETSVR before applying or removing the PTF.
STRTCPSVR *NETSVR after applying or removing the PTF.

********************************************************************
THE FOLLOWING ARE SUPERSEDED SPECIAL INSTRUCTIONS. IF THE SUPERSEDED
PTF HAS ALREADY BEEN APPLIED AND ITS SPECIAL INSTRUCTION FOLLOWED,
IT IS NOT NECESSARY TO FOLLOW THAT SPECIAL INSTRUCTION AGAIN.
********************************************************************

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF64938 :
=================================================

ENDTCPSVR *NETSVR before applying or removing the PTF.
STRTCPSVR *NETSVR after applying or removing the PTF.

If you have experienced corruption or loss of IBM i NetServer function,
an IPL of the system will be required to recover after applying the
PTF.

SPECIAL INSTRUCTIONS FOR SUPERSEDED PTF MF64187 :
=================================================

ENDTCPSVR *NETSVR before applying or removing the PTF.
STRTCPSVR *NETSVR after applying or removing the PTF.

IBM i NetServer can be configured to disable the SMB1 protocol by using
the following command:

CALL QZLSMAINT PARM('40' '1' '0x100')

The configuration change takes effect immediately, and any existing
SMB1 connections to the server will fail.  It is recommended to make
the configuration change while NetServer is not active.


Use of the SMB1 protocol can be restored by calling the following
command, if needed:

CALL QZLSMAINT PARM('40' '2' '0x100')


Whenever the server is configured to enable or disable a version of the
SMB protocol, it may be necessary to reboot client PCs for the client
to begin using the new settings.


Default Instructions

THIS PTF CAN BE APPLIED IMMEDIATE OR DELAYED.



Supersedes

PTF/FIX NO(S).  APAR TITLE LINE
--------------  ------------------------------------------------------------
   MF64871      LIC-INCORROUT Change Default SMB2 IOCTL Response
   MF64871      LIC-INCORROUT Invalid Session Setup Responses After Failed C
   MF64871      LIC-INCORROUT Unsupported Security Option on SMB2 Negotiate
   MF64871      LIC-INCORROUT SMB2 Server Delays on Set Attribute
   MF64871      LIC-INCORROUT Honor FILE_NON_DIRECTORY_FILE Flag
   MF64938      LIC-INCORROUT IBM i NetServer RMDIR and Other Failures
   MF64774      LIC-SRCB6000302-UNPRED SYSTEM FAILS WITH SRCB6000302
   MF64672      LIC-UNPRED-MSGCPIB683 NETSERVER BECOMES UNUSABLE
   MF64402      LIC-OTHER INTERNAL EXTENSIONS FOR MAINTAINABILITY
   MF64414      LIC-INCORROUT Guest Access Fails with Extended Session Secur
   MF64298      LIC-INCORROUT Add Extended Session Security for IBM i NetSer
   MF61727      LIC-UNPRED TMPSTG LEAK IN NETSERVER SMB2 QUERY DIRECTORY
   MF64207      LIC-PERF SMB2 Query Directory Causing Paging
   MF64187      LIC-OTHER Allow Disable of SMB1 Support for IBM i NetServer
   MF64050      LIC-INCORROUT SMB2 Close chained after Query fails with STAT
   MF63675      LIC-INCORROUT 'SAVE AS' FROM INTERNET EXPLORER TO A NETSERVE
   MF63672      OSP-MSGMCH3203 HEAP SPACE PROBLEM CAUSES NETSERVER TO FAIL T
   MF63402      LIC-INCORROUT SMB2 COMPATIBILITY ENHANCEMENTS
   MF63369      LIC-INCORROUT SMB2 Delete Fails for Some Clients
   MF63136      LIC-OTHER-INCORROUT WINDOWS SYSTEM ERROR 1359 MAPPING SMB2 N
   MF61210      LIC-OTHER-INCORROUT NETSERVER ACCESS DENIED
   MF60936      LIC Support Raw NTLMSSP Authentication to IBM i NetServer
   MF62394      OSP-OTHER-UNPRED WINDOWS CLIENT GETS "SYSTEM ERROR 1359" WHE
   MF62364      OSP-OTHER-INCORROUT CANNOT WRITE TO NETSERVER SHARE WHEN "AL
   MF61485      LIC-INCORROUT SMB2 Null bytes padded at end of file
   MF61182      LIC-OTHER IBM i NetServer does not grant SMB2 oplocks
   MF61075      LIC-OTHER Listing shares by UNC server name fails for Window
   MF61075      LIC-OTHER SMB2 with Samba client slow when signing is requir
   MF61075      LIC-OTHER SMB2 Lock requests may unexpectedly conflict
   MF60937      LIC Heap Storage Leak for IBM i NetServer SMB2 Requests
   MF60937      LIC-INCORROUT SMB2 Sharing Violation on Get Attributes
   MF60934      LIC Multiple SMB2 Failures with Samba 4 Clients

Summary Information

System.............................. i
Models..............................
Release............................. V7R3M0
Licensed Program............... 5770999
APAR Fixed.......................... View details for APAR MA47234
View details for APAR MA47236
Superseded by:...................... View fix details for PTF MF66641
Recompile........................... N
Library............................. QSYS
MRI Feature ........................ NONE
Cum Level........................... C9116730


IBM i Support

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Document information

More support for: i family

Software version: V7R3M0

Operating system(s): OS/400

Reference #: MF65275

Modified date: 14 September 2018