IT33095: CLIENT ON WINDOWS MAY CRASH WHEN THE NUMBER OF STREAMS IS CHANGING DURING AN OPERATION

APAR status

• Closed as program error.

Error description

• IBM Spectrum Protect Backup Archive Client can crash during the
  incremental/selective backup of a file.
  This happens when the number of named streams used by the backup
  process is changing during operation.
  
  
  The crash stack when TRACING is OFF:
  ...
  NTNamedStreamRead()+869 bytes
  fioRead()+2697
  bytes
  UncompressedFileSend()+602 bytes
  SendFileData()+1243
  bytes
  sdSendObj()+5637 bytes
  sendIt()+712
  bytes
  PFtxnListLoop()+1027 bytes
  PrivFlush2()+717
  bytes
  PrivFlush()+32 bytes
  tlSend()+94
  bytes
  DccTxnConsumer::HandleQueue()+1863
  bytes
  DccTxnConsumer::Run()+1365 bytes
  ...
  
  The crash stack
  when TRACING is ON
  ...
  vswprintf()+110 bytes,
  pkVsprintf()+239
  bytes
  trPrintf()+229 bytes,
  NTNamedStreamOpen()+1699
  bytes,
  fioRead()+1055 bytes,
  UncompressedFileSend()
  SendFileData
  ()
  sdSendObj()
  sendIt()
  PFtxnListLoop()
  PrivFlush2()
  PrivFlush()
  
  tlSend()
  DccTxnConsumer::HandleQueue()
  DccTxnConsumer::Run()
  ..
  .
  
  IBM Spectrum Protect Client affected:
  Spectrum Protect Backup-Archive client versions 7.1.x and 8.1.x
  are affected on Windows platform.
  
  
  Additional Keywords:
  TSM dsm.exe dsmcsvc.exe Windows TS003395847
  
  Initial Impact:
  Low
  
  Local Fix:
  None
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * Spectrum Protect Backup-Archive client versions 7.1.6,       *
  * 7.1.8, 8.1.4, 8.1.6, 8.1.8, 8.1.9 and 8.1.10 on Windows      *
  * platform.                                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * This issue is projected to be fixed in the Data Protection   *
  * for Microsoft Hyper-V 8.1.11 version on Windows platform.    *
  * Note that this is subject to change at the discretion of     *
  * IBM.                                                         *
  ****************************************************************
  

Problem conclusion

• Internal routine that processes the named streams was not able
  to handle situation when the number of named streams is
  changing. This routing has been updated to correctly handle this
  situation.
  

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:

Modules/Macros

• DSM      DSMC     DSMCSVC
  

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels