OA67277: ZFS ABEND 00C4 REASON 00000038 IN MODULE IOEFSKN AT OFFSET 009795CA S0C4 PIC38

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Customer's system is running on zOS 2.5 on level OA64882 -
  HZFS450. 
  
  Customer is experiencing Terminating exception causing 0C4
  PIC38, during ZFSCREAT routine.
  
  At the time of the 0C4 the trace back:
  
  DSA (F4SA) at address: 50912E1FD8                              
                 
  
  DSA (F4SA) at address: 50912E19D0                              
                 
  
  Routine at addr 26279050 name: epiv_CreateAnode                
                 
  
  Routine at addr 26753C18 name: epif_CreateOE                  
                 
  
  Routine at addr 26056808 name: efsvn_file_create              
                 
  
  Routine at addr 26650C80 name: efsvn2_create                  
                     
  
  Routine at addr 26062330 name: efsvn_create                    
                        
  
  Routine at addr 259AB7A0 name: ZFSCREAT                        
                        
  
  Routine at addr 25735860 name: CNCREAT
  
  The routine epiv_CreateAnode was called with bad handle pointer,
   where efsvn2_create ended up passing garbage to
  efsvn_file_create.
  
  At the time of the 0C4, register 8(R8) had a bad handle pointer.
  
  
  (007 .404639) General Registers 08: 00E01057_A0250E19
  00000000_00000000 00E01057_A0250E19 00000050_912E22F8
  
  Register 8 had a bad value because the filesystem was corrupted,
  which was the reason for triggering the ABEND0C4 PIC38.
  

Local fix

• Run the salvager utility with "-verifyonly" option to make sure
  that filesystem is not corrupted.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: z/OS File System (zFS) 2.5                   *
  *                 zFS FMID:HZFS450                             *
  *                                                              *
  *                 z/OS File System (zFS) 3.1                   *
  *                 zFS FMID:HZFS510                             *
  ****************************************************************
  * PROBLEM DESCRIPTION: zFS encountered a terminating ABEND0C4  *
  *                      exception while processing an anode     *
  *                      create request during a ZFSCREAT        *
  *                      function call.                          *
  *                                                              *
  *                      Additional symptoms/information:        *
  *                                                              *
  *                      epiv_CreateAnode ABEND0C4 PIC x'38'     *
  *                                                              *
  *                                                              *
  ****************************************************************
  * RECOMMENDATION: APPLY PTF                                    *
  ****************************************************************
  The routine epiv_CreateAnode was called with a bad handle
  pointer that caused the abend to be taken. It was determined
  that the abend was potentially the result of a corrupted ZFS
  file system.
  

Problem conclusion

• Code has been added to detect the reported condition to avoid
  the terminating ABEND0C4. As the source of the potential
  corruption has not been determined, a diagnostic dump will be
  collected  for future analysis. The ZFS aggregate may also be
  marked disabled to prevent further disruptions.
  

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:

  UJ96772 UJ96773

Modules/Macros

• IOEAGFMT IOEAGSLV IOEDUMPF IOEFSCM  IOEFSKN  IOEFSTHD IOEFSUTL
  IOEZADM
  

Fix information

• Fixed component name

  ZFS ZSERIES FIL

• Fixed component ID

  5696EFS00

Applicable component levels

• R450 PSY UJ96773

     UP25/03/25 P F503

• R510 PSY UJ96772

     UP25/03/25 P F503

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.