IV70497: MAY CRASH IN EAMAPOUT WITH MODS ENABLED APPLIES TO AIX 6100-09 15/06/01 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• AIX may crash in the following stack with MODS enabled
  and  while setting AIXC or NFS4 ACL.
  
  This can only happen on the systems which are having
  the APAR IV47117 and MODS enabled.
  
  (0)> dw xmdbg
  xmdbg+000000: 00000001 00000000 3FFFFFFF FFFFFFFC
  ........?.......
  
  (0)> dr r3
  r3  : EEEE0000DA51B023   EEEE0000DA51B023
  
  (0)> f
  pvthread+03DB00 STACK:
  [0001C040]abend_trap+000000 ()
  [000DB2C8]xmdbg_error+000088 (??, ??, ??, ??)
  [00294338]check_free+000278 (??, ??, ??)
  [0028237C]validfault+00011C (??, ??, ??)
  [00280CEC]v_pfget+00038C (??, ??, ??, ??, ??, ??)
  [00279480]state_save_ret+000578 ()
  ____ Exception (F00000002FF47600) ____
  [0006AA7C].backt+000000 ()
  [0006BEF0].vcs_movep_excp+000020 ()
  [00361344]vmpcopy+000744 (F10001015175DC00,
  FFFFF00000000000,
     F00000002FF467C8, 0000060100000001, 0000000100000001,
  0000000002E02660,
     0000000000000000, 0000000000000000)
  [003629EC]vmfcopyin+0002CC (??, ??, ??, ??, ??, ??, ??,
  ??)
  [00361F18]vm_uiomove+000718 (??, ??, ??, ??)
  [003408D8]eaMapOut@AF43_5+000058 (??, ??, ??)
  [0033F2F4]j2_eav2_setxacl+000514 (??, ??, ??, ??, ??, ??)
  [0033E16C]j2_setxacl+0001CC (??, ??, ??, ??, ??, ??)
  [005FB788]vnop_setxacl_common+000088 (??, ??, ??, ??, ??,
  ??)
  [005FBB98]vnop_setxacl+0001D8 (??, ??, ??, ??, ??, ??)
  [008233C0]__chxacl+0002C0 (??, ??, ??, ??, ??, ??, ??,
  ??)
  [00003888]mfspurr_sc_flih01+0000E4 ()
  [kdb_get_virtual_memory] no real storage @ 2FF203A8
  [D029FEC0]D029FEC0 ()
  [kdb_read_mem] no real storage @ FFFFFFFFFFF8D40
  

Local fix

• Disable MODS
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:
  * Systems running the 6100-09 Technology Level with
  * bos.mp64 below 6.1.9.30
  ****************************************************************
  * PROBLEM DESCRIPTION:
  * AIX may crash in the following stack with MODS enabled
  * and  while setting AIXC or NFS4 ACL.
  * This can only happen on the systems which are having
  * the APAR IV47117 and MODS enabled.
  * (0)> dw xmdbg
  * xmdbg+000000: 00000001 00000000 3FFFFFFF FFFFFFFC
  * ........?.......
  * (0)> dr r3
  * r3  : EEEE0000DA51B023   EEEE0000DA51B023
  * (0)> f
  * pvthread+03DB00 STACK:
  *  0001C040 abend_trap+000000 ()
  *  000DB2C8 xmdbg_error+000088 (??, ??, ??, ??)
  *  00294338 check_free+000278 (??, ??, ??)
  *  0028237C validfault+00011C (??, ??, ??)
  *  00280CEC v_pfget+00038C (??, ??, ??, ??, ??, ??)
  *  00279480 state_save_ret+000578 ()
  * ____ Exception (F00000002FF47600) ____
  *  0006AA7C .backt+000000 ()
  *  0006BEF0 .vcs_movep_excp+000020 ()
  *  00361344 vmpcopy+000744 (F10001015175DC00,
  * FFFFF00000000000,
  *    F00000002FF467C8, 0000060100000001, 0000000100000001,
  * 0000000002E02660,
  *    0000000000000000, 0000000000000000)
  *  003629EC vmfcopyin+0002CC (??, ??, ??, ??, ??, ??, ??,
  * ??)
  *  00361F18 vm_uiomove+000718 (??, ??, ??, ??)
  *  003408D8 eaMapOut@AF43_5+000058 (??, ??, ??)
  *  0033F2F4 j2_eav2_setxacl+000514 (??, ??, ??, ??, ??, ??)
  *  0033E16C j2_setxacl+0001CC (??, ??, ??, ??, ??, ??)
  *  005FB788 vnop_setxacl_common+000088 (??, ??, ??, ??, ??,
  * ??)
  *  005FBB98 vnop_setxacl+0001D8 (??, ??, ??, ??, ??, ??)
  *  008233C0 __chxacl+0002C0 (??, ??, ??, ??, ??, ??, ??,
  * ??)
  *  00003888 mfspurr_sc_flih01+0000E4 ()
  *  kdb_get_virtual_memory  no real storage @ 2FF203A8
  *  D029FEC0 D029FEC0 ()
  *  kdb_read_mem  no real storage @ FFFFFFFFFFF8D40
  ****************************************************************
  * RECOMMENDATION:
  * Install APAR IV70497.
  ****************************************************************
  

Problem conclusion

• Corrected the code to write data within the allocated memory.
  

Temporary fix

Comments

• 6100-09 - use AIX APAR IV70497
  7100-03 - use AIX APAR IV70710
  

APAR Information

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

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

  IV70710 IV70723

Fix information

• Fixed component name

  AIX 610 STD EDI

• Fixed component ID

  5765G6200

Applicable component levels

• R610 PSY U861403

     UP15/11/22 I 1000

PTF to Fileset Mapping

• U867415 bos.mp64 6.1.9.45

• U861403 bos.mp64 6.1.9.100