IJ48707: VIOS CAN CRASH DURING ASYNC EVENT ON UNMAPPED VFCHOST APPLIES TO AIX 7300-03

APAR status

• Closed as program error.

Error description

• After unmapping vfchost, a crash may occur on the VIOS
  when trying to forward and asynchronous event to client
  adapter.
  The stack trace is as below :
  [F100091590377224]npiv_real_fcscsi_async+000024(...)
  [00014D70].hkey_legacy_gate+00004C ()
  [0769251C]emfsc_npiv_send_async_stat+0000DC (...)
  [07692B58]emfsc_npiv_async_stat+000498 (...)
  [0765BB34]emfsc_async_rscn+000614 (...)
  [0765F258]emfsc_async_stat+000478 (...)
  [07541238]emfc_async_status@AF105_1+000078 (...)
  [0752D4F0]emfc_async_status+000050 (...)
  [07531188]emfc_offlevel_admin_completion+000828 (??)
  

Local fix

• N/A
  

Problem summary

• VIOS crashes in vfc host stack for an async event, when the
  vfc host is being removed via rmdev or when vfc adapter
  un-configuration on client lpar.
  

Problem conclusion

• Validate VFC instance and protocol handle before
  consuming the async event in vfchost for async events.
  

Temporary fix

Comments

APAR Information

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

  IJ48549

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

Fix information

• Fixed component name

  AIX V7.3

• Fixed component ID

  5765CD300

Applicable component levels