IV80957: SYSTEM CRASH WHEN USING CIFS_FS DUE TO TREE CORRUPTION APPLIES TO AIX 7200-00

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• **************************************************************
  * USERS AFFECTED:
    * Systems running the AIX 7200-00 Technology Level
    * with bos.cifs_fs.rte at the 7.2.0.0 level.
    **************************************************************
    * PROBLEM DESCRIPTION:
    * This only affects users of the CIFS client driver.
    *
    * The system may crash or hang in the CIFS driver after
    * removing a file or directory.
    * The stack trace of the crash can vary, but will include
    * smbfs_search_tree() or smbfs_create_node().
    **************************************************************
    * RECOMMENDATION:
    * Install APAR IV80957.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv80957/
    * https://aix.software.ibm.com/aix/ifixes/iv80957/
    * The ifix can be installed using Live Update (LU).
    * If LU is not used, installation of the ifix requires a
    * reboot.
    **************************************************************
  

Local fix

Problem summary

•   **************************************************************
    * USERS AFFECTED:
    * Systems running the AIX 7200-00 Technology Level
    * with bos.cifs_fs.rte at the 7.2.0.0 level.
    **************************************************************
    * PROBLEM DESCRIPTION:
    * This only affects users of the CIFS client driver.
    *
    * The system may crash or hang in the CIFS driver after
    * removing a file or directory.
    * The stack trace of the crash can vary, but will include
    * smbfs_search_tree() or smbfs_create_node().
    **************************************************************
    * RECOMMENDATION:
    * Install APAR IV80957.
    * Prior to fix availability, an interim fix is available from
    * either
    * ftp://aix.software.ibm.com/aix/ifixes/iv80957/
    * https://aix.software.ibm.com/aix/ifixes/iv80957/
    * The ifix can be installed using Live Update (LU).
    * If LU is not used, installation of the ifix requires a
    * reboot.
    **************************************************************
  

Problem conclusion

• Change locking mechanism to avoid trying to remove a node twice
  

Temporary fix

•   *********
    * HIPER *
    *********
  

Comments

APAR Information

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

  IV80334

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

Fix information

• Fixed component name

  AIX V7.2

• Fixed component ID

  5765CD200

Applicable component levels

• R720 PSY U870399

     UP16/05/04 I 1000 Ž

PTF to Fileset Mapping

• U870399 bos.cifs_fs.rte 7.2.0.1