IZ82121: SYSTEM CRASH WHILE CONFIGURING DISKS IN MPIODELDRIVER() APPLIES TO AIX 5300-11

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• while configuring LUNs, the system might crash with a
  stack trace similar to:
  
  (0)> f
  pvthread+011C00 STACK:
  [0001AD00]abend_trap+000000 ()
  [004C0250]xm_bad_free+000250 (??, ??, ??, ??)
  [004BE50C]xmfree1+00024C (??, ??, ??, ??, ??, ??)
  [004BF5A4]xmfree+000144 (??, ??)
  [0462DA08]mpioDelDriver+0000E8 (??)
  [0462F0A4]mpioTerm+000264 (??)
  [045D3734]scsidisk_term_mpio+000034 (??)
  [045E5998]scsidisk_config+001738 (??, ??, ??)
  [00578910]config_dd+000270 (??, ??, ??)
  [005793E0]sysconfig+000240 (??, ??, ??)
  [00003844].svc_instr+000144 ()
  

Local fix

Problem summary

• Possible system crash with following stack trace
  abend_trap+000000 ()
  xm_bad_free+000250 ()
  xmfree1+00024C ()
  xmfree+000144 ()
  mpioDelDriver+0000E8 ()
  mpioTerm+000264 ()
  scsidisk_term_mpio+000034 ()
  scsidisk_config+001738 ()
  config_dd+000270 ()
  sysconfig+000240 ()
  .svc_instr+000144 ()
  

Problem conclusion

• Added code to return error code to scsidisk driver when
  dd path failed.
  

Temporary fix

Comments

• 5300-10 - use AIX APAR IZ82642
  5300-11 - use AIX APAR IZ82121
  5300-12 - use AIX APAR IZ81597
  6100-04 - use AIX APAR IZ78828
  6100-05 - use AIX APAR IZ78799
  6100-06 - use AIX APAR IZ77592
  6100-06 - use AIX APAR IZ77722
  7100-00 - use AIX APAR IZ80282
  

APAR Information

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

  IZ67778

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

  U839396

Fix information

• Fixed component name

  AIX 5.3

• Fixed component ID

  5765G0300

Applicable component levels

• R530 PSY U839396

     UP10/09/20 I 1000