PK83455: ABEND0C4 REASON CODE X'4' IN MODULE EZAFTPLS PROGRAM EZAFTPRU AT OFFSET '192A'

Obtain the fix for this APAR.

APAR status

• Closed as unreproducible in next release.

Error description

• When using FTPS, EZAFTPRU's setup_FTPOSTPR routine gets
  control. At offset x'192a' into EZAFTPRU, an attempt is made
  to store a halfword from Register 15 into the location
  addressed by Register 14, but Register 14's value at that
  point is zero, and therefore execution of the STH results in
  an attempt to store into low-core (inaccessible storage).  This
  causes the abend0c4 reason code 4.
  
  KEYWORDS: FTPOSTPR 0C4 ABEND TLS
  

Local fix

• Do not use TLS.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All users of the IBM Communications Server   *
  *                 for z/OS Version 1 Release(s) 10 IP: FTP     *
  ****************************************************************
  * PROBLEM DESCRIPTION: When using the FTP FTPOSTPR user exit,  *
  *                      EZAFTPRU's setup_FTPOSTPR routine may   *
  *                      ABEND at offset x'192A' when an         *
  *                      anonymous user, or TLS user attempts    *
  *                      to login.                               *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  FTP routine setup_FTPOSTPR() was storing into a buffer that
  may not have been allocated yet.  This happens for an anonymous
  or TLS user.
  +-------------------------------------------------------------+
  + Please check our Communications Server for OS/390 homepages +
  + for common networking tips and fixes.  The URL for these    +
  + homepages can be found in Informational APAR II11334.       +
  +-------------------------------------------------------------+
  

Problem conclusion

Temporary fix

Comments

• FTP has been corrected.
  

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UK45593

Modules/Macros

• EZAFTPFC EZAFTPFR EZAFTPFU EZAFTPGM EZAFTPRA
  EZAFTPRI EZAFTPRX EZAFTPSR
  

Fix information

• Fixed component name

  TCP/IP V3 MVS

• Fixed component ID

  5655HAL00

Applicable component levels

• R1A0 PSY UK45593

     UP09/04/24 P F904

Fix is available

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