PJ41218: IN CERTAIN CASES A ZDBUG DISPLAY CAN RESULT IN AN OPR-4 OUT CDBS.

APAR status

• Closed as program error.

Error description

• See problem summary
  

Local fix

• n/a
  

Problem summary

• APAR NUMBER:  PJ41218
  PRODUCT:  TPF4
  FUNCTIONAL AREA:  DEBUG TOOL SUPPORT
  SHIPPED IN PUT:  26
  
  ABSTRACT:
  With PJ26666 applied, a CTL-4, CTL-74, or other dumps may occur
  when doing a ZDBUG or ZDDBG DISPLAY command when the maximum
  number of program names are registered.
  
  APAR CONTENTS:
  FEATURE   TYPE                STATUS    NAME
  Base      C                   Changed   source/rt/base/cdbs.c
  
  PREREQUISITE APARS:  To be applied in order listed.
  Base      C                   Changed   source/rt/base/cdbs.c
    PJ25632(09)  PJ25983(10)  PJ25981(10)  PJ26600(11)
  PJ26666(11)  PJ27160(13)  PJ27224(13)  PJ27383(13)  PJ28193(16)
   PJ28649(17)  PJ28809(17)  PJ31041(20)  PJ30778(23)  PJ32220(23)
  
  COMMENTS:
  In the ZDBUG/ZDDBG DISPLAY command code, an array of 81
  characters was declared in cdbs.c as a local variable for the
  list of program names. 81 characters were copied from the
  registration entry into the local variable. Then an sprintf was
  used to create the output line to display the list of program
  names. However, if the last character was not NULL, the sprintf
  may write past the end of the buffer corrupting the stack. As a
  result, a variety of dumps may occur.
  

Problem conclusion

• SOLUTION:
  The cdbs.c logic was updated to ensure that the program name
  list local variable is NULL terminated.
  
  
  DEPENDENCIES
  
  SEGMENTS TO BE ASSEMBLED OR COMPILED:
  None.
  
  SEGMENTS TO BE LINK EDITED:
  cdbs40.exe (Shipped in Tar File)
  
  COREQS:
  None.
  
  MIGRATION CONSIDERATIONS:
  None.
  
  UPDATED INFORMATION UNITS:
  None.
  
  See your IBM representative if you need additional information.
  
  DOWNLOAD INSTRUCTIONS:
  http://www.ibm.com/software/htp/tpf/pages/maint.htm
  

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

  TPF 4.1

• Fixed component ID

  5748T1401

Applicable component levels

• R410 PSY

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