IZ55994: Arithmetic crashed on HPUX with a long expression of the form 1+1+1+.. around 380 expressions deep

IBM Tivoli 4.0.0-TIV-SSM-FP0010
IBM Tivoli 4.0.0-TIV-SSM-FP0011
IBM Netcool System Service Monitor SSM 4.0 Fix Pack 12 README 4.0.0-TIV-SSM-FP0012
IBM Netcool System Service Monitor SSM 4.0 Fix Pack 13 README 4.0.0-TIV-SSM-FP0013
IBM Netcool System Service Monitor SSM 4.0 Fix Pack 14 README 4.0.0-TIV-SSM-FP0014
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 1 README 4.0.0.14-TIV-SSM-IF0001
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 2 README 4.0.0.14-TIV-SSM-IF0002
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 3 README 4.0.0.14-TIV-SSM-IF0003
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 4 README 4.0.0.14-TIV-SSM-IF0004
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 5 README 4.0.0.14-TIV-SSM-IF0005
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 6 README 4.0.0.14-TIV-SSM-IF0006
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 7 README 4.0.0.14-TIV-SSM-IF0007
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 8 README 4.0.0.14-TIV-SSM-IF0008
IBM Netcool System Service Monitor SSM 4.0 Interim Fix 1 README 4.0.0.15-TIV-SSM-IF0001

APAR status

• Closed as program error.

Error description

• During stress testing (SSM 4.0 FP7 level), it was found that on
  64-bit HPUX machines an expression of 1+1+1+...  (380+ times)
  generated an expression so "deep" that it crashed the agent.
  

Local fix

• In init.cfg, set ArithmeticStack=512. That will cause
  arithmetic to report errors before such stack overflows can
  happen.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of SSM 4.0 on HPUX
  ****************************************************************
  PROBLEM DESCRIPTION:
  Arithmetic crashed on HPUX with a long expression of the form
  1+1+1+.. around 380 expressions deep
  ****************************************************************
  RECOMMENDATION:
  Upgrade to Fix Pack 8 for SSM 4.0.
  ****************************************************************
  

Problem conclusion

• Reduced the default ArithmeticStack limit from 10000 to 512,
  which allows for up to 256 1+1+1 expressions before an error is
  returned (and before a crash occurs). To raise the limit just
  set ArithmeticStack=N in init.cfg.
  
  The fix for this APAR is contained in the following maintenance
  packages:
  | fix pack | 4.0.0-TIV-SSM-FP0008
  

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

  NETCOOL SYS SVC

• Fixed component ID

  5724P4300

Applicable component levels

• R400 PSN

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