IJ25499: ON SOLARIS, UNIX OS AGENT CRASHES WITH INVALID KCID VALUE

IBM Tivoli Monitoring 6.3.0 Fix Pack 7 Service Pack 7 (6.3.0.7-TIV-ITM-SP0007)

APAR status

• Closed as program error.

Error description

• Environment: Across versions - 6.3 FP7
  
  Problem Description: On
  Solaris, the Monitoring Agent for UNIX OS crashes when an
  invalid value for the kcid is returned from the kstat_read API
  call.
  
  Related Files and Output: In the agent RAS1 log with
  tracing set to (UNIT:vm ALL), the following message can be seen
  showing a value other than 0, -1, or a positive number:
  
  (5EA903
  8B.6770-A:vm_stat_externals.cpp,1785,"get_cpu_stats") kcid =
  -185337964
  
  If a core file is generated, it will show a stack
  trace that includes:
  
  #0 0x00000001002e3428 in
  __1cNget_cpu_stats6FpnLsysvminfo_t__i_ ()
  #1 0x00000001002caebc
  in __1cICpuStatsGsample6MpnDstdDmap4CinLCpuStatInfo_n0BEless4Ci_
  _n0BJallocator4n0BEpair4Ckin0C________v_ ()
  #2
  0x0000000100245f28 in __1cQCpuStatsTemplateTupdateCpuStatistics6
  MnDstdMbasic_string4Ccn0BLchar_traits4Cc__n0BJallocator4Cc_____v
  _ ()
  #3 0x000000010012bce8 in
  __1cSomunx_unixos_agentKTakeSample6M_v_ ()
  #4
  0xffffffff7dad9630 in __1cFctiraTDriveDataCollection6M_I_ ()
  from /opt/IBM/ITM/tmaitm6/sol286/lib/libkra.so
  #5
  0xffffffff7daea088 in
  __1cMTableManagerXcheckForExpiredRequests6Ml_v_ () from
  /opt/IBM/ITM/tmaitm6/sol286/lib/libkra.so
  #6 0xffffffff7daea800
  in __1cMTableManagerHtimeout6FpnPCTRA_Timerspec___v_ () from
  /opt/IBM/ITM/tmaitm6/sol286/lib/libkra.so
  #7 0xffffffff7da77f00
  in __1cPCTRA_timer_baseUTimerCallbackHandler6M_v_ () from
  /opt/IBM/ITM/tmaitm6/sol286/lib/libkra.so
  #8 0xffffffff7da75f48
  in __1cMHandler_base6Fpv_v_ () from
  /opt/IBM/ITM/tmaitm6/sol286/lib/libkra.so
  #9 0xffffffff7da794a0
  in __1cPCTRA_timer_task6Fpv_0_ () from
  /opt/IBM/ITM/tmaitm6/sol286/lib/libkra.so
  #10
  0xffffffff7b149884 in _lwp_start () from
  /lib/sparcv9/libc.so.1
  #11 0xffffffff7b149884 in _lwp_start ()
  from /lib/sparcv9/libc.so.1
  

Local fix

Problem summary

• On Solaris, UNIX OS Agent crashes with invalid KCID value.
  
  On Solaris, the Monitoring Agent for UNIX OS crashes when an
  invalid value for the kcid is returned from the kstat_read API
  call.
  

Problem conclusion

• The API call was returning a value of -185337964 whereas valid
  values are supposed to be -1, 0, or greater than 0.   The code
  has been updated to handle the invalid value correctly.
  
  The fix for this APAR is contained in the following maintenance
  packages:
  
  | Service Pack | 6.3.0.7-TIV-ITM-SP0007
  

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

  ITM AGENT UNIX

• Fixed component ID

  5724C040U

Applicable component levels