IT18080: CLIENT CRASH DURING BACKUP WITH ACCESS VIOLATION EXCEPTION C0000005 IF DEDUPLICATION ENABLED.

IBM Spectrum Protectâ„¢ Client 8.1.2 Downloads and READMEs
IBM Spectrum Protectâ„¢ Client 7.1.8 Downloads and READMEs

APAR status

• Closed as program error.

Error description

• A rare race condition can cause a client crash when an invalid
  chunk reference error is received from the server and resets a
  local chunk list while another thread is working inside that
  list.
  
  Tivoli Storage Manager Versions Affected:
  All versions and platforms that support the deduplication
  feature / functionality.
  
  Customer/L2 Diagnostics (If Applicable)
  DSMCRASH.LOG:
  dsmc.exe caused exception C0000005
           (EXCEPTION_ACCESS_VIOLATION)
  
  CALLSTACK:
  dsmc!Dedup::FindEntry+0x135
  dsmc!Dedup::SearchFor+0x138
  dsmc!Dedup::createChunks+0x6a4
  dsmc!DedupMT::dedupThread+0x1e3
  dsmc!callDedupThread+0x12
  msvcr110!beginthreadex+0x107
  msvcr110!endthreadex+0x192
  kernel32!BaseThreadInitThunk+0xd
  
  Initial Impact: Low
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Spectrum Protect client versions 6.3, 6.4, 7.1 and       *
  * 8.1.0 running on all platforms.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See ERROR DESCRIPTION                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * This issue is projected to be fixed in the IBM Spectrum      *
  * Protect client version 7.1.8 and 8.1.2 on all platforms.     *
  ****************************************************************
  

Problem conclusion

• Enhanced handling of Invalid chunk reference condition.
  

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:

Fix information

• Fixed component name

  TSM CLIENT

• Fixed component ID

  5698ISMCL

Applicable component levels

• R81W PSY

     UP

• R81L PSY

     UP

• R81S PSY

     UP

• R81A PSY

     UP

• R81M PSY

     UP

• R81H PSY

     UP