OA58749: __INHERITANCE.TIMELIMITSPAWN NOT INHERITED ACROSS SPAWN __SPAWN2INHESETTIMELIMIT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When attempting to limit CPU time for a spawned job
  (RLIMIT_CPU), __spawn2 is used `with the __inheritance.timelimit
  to set an appropriate value for CPU time.  The spawned job is
  not inheriting the value set for __inheritance.timelimit.  This
  could result in a spawned job accumulating a greater CPU time
  than the limit should have allowed.
  
  KEYWORDS: BPXYINHE INHE
  
  VERIFICATION STEPS:
  Verification Steps:
  
  1) Confirm from a dump that includes the parent and
     problem child jobs that the spawned job reflects the same
     CPU time limit as its parent job (ASCBJSTL).
  
  2) Confirm that AscbToff is ON in both the parent and child.
  3) Confirm that the TcbSenv (if one exists) matches the AsxbSenv
  (ie The task is using the address space level ACEE).
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users of z/OS UNIX System Services for                   *
  * HBB77B0 using spawn().                                       *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * The spawn() callable service is not correctly setting the    *
  * job time limit for newly created child address spaces when   *
  * the new limit is specified in the INHE structure             *
  * (INHETIMELIMIT).                                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During job selection (BPXPRJSR), the job time limit was
  correctly set using the INHETIMELIMIT value; but that value was
  overwritten during fork child process. Fork child is incorrectly
  propagating the parent time limit even though the INHE value
  should take precedence
  

Problem conclusion

• Child processing (BPXPRFC) will be updated to bypass propagating
  the parent's time limit when an INHETIMELIMIT has been specified
  by the caller.
  

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:

  UJ02078

Modules/Macros

• BPXPRFC
  

Fix information

• Fixed component name

  OPENMVS SYS SRV

• Fixed component ID

  5695SCPX1

Applicable component levels

• R7B0 PSY UJ02078

     UP20/02/26 P F002

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.