IV96360: SYSTEM CRASH OR HANG DURING ERROR RECOVERY ON SOME FC ADAPTERS APPLIES TO AIX 7200-01

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• **************************************************************
  * USERS AFFECTED:
  * Systems running the AIX 7200-01 Technology Level.
    **************************************************************
  * ERROR DESCRIPTION:
  * For some Fibre Channel adapters, when error recovery happens,
  * the driver may crash or hang the partition.
  * Adapters using the emfcdd driver are exposed.
  *
  * To find out if a system has any adapters using an affected
  * driver with lsdev, for example:
  * # lsdev -F "name ddins" | grep emfcdd
  * Note: on a VIOS, this must be run as root using
  * 'oem_setup_env'.
    **************************************************************
  * RECOMMENDATION:
  * Install APAR IV96360.
  * Prior to fix availability, an interim fix is available from
  * either
  * ftp://aix.software.ibm.com/aix/ifixes/iv96360/
  * https://aix.software.ibm.com/aix/ifixes/iv96360/
  * 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

• 1. Possible hang with similar stack below during error
  recovery.
  
   04314D68 emfc_find_abt_info_active_xri+000068
   0431388C emfc_sm_abort_proc_ctl_elem+0000EC (??, ??, ??)
   0430E558 emfc_proc_cqe_proto+000598 (??, ??, ??)
   043102AC emfc_proc_cq_wq+0002AC (??, ??)
   04310F00 emfc_proc_eq+000140 (??, ??)
   04311444 emfc_intr+000144 (??)  002646C4 i_poll_soft+000204
  (??)  00263E50 i_softmod+000670 ()  0020292C flih_util+000258
  ()
  
  OR
  
   05A6B318 emfc_log_err+000778 (??, ??, ??, ??, ??, ??)
   05AE7724 emfc_sm_abort_proc_xri_aborted+000264 (??, ??)
   05AE5318 emfc_proc_cq_wq+0002B8 (??, ??)
   05AE5F70 emfc_proc_eq+000150 (??, ??)
   05AE64B8 emfc_intr+000138 (??)  002BFA54 i_poll_soft+0001F4
  (??)  002BF1E4 i_softmod+000624 ()  001B0338 flih_util+000258
  ()
  
  2. And possible system crash with similar stack below during
  error recovery.
  
  pvthread+085900 STACK:   00024BE0 abend_trap+000000 ()
   05AE9190 emfc_sm_abort_build_rrq+0001D0 (??, ??)
   05AE9A9C emfc_sm_abort+0003DC (??, ??)
   05AE79E0 emfc_sm_abort_proc_xri_aborted+000520 (??, ??)
   05AE5318 emfc_proc_cq_wq+0002B8 (??, ??)
   05AE5F70 emfc_proc_eq+000150 (??, ??)
   05AE64B8 emfc_intr+000138 (??)  002BFA54 i_poll_soft+0001F4
  (??)  002BF1E4 i_softmod+000624 ()  001B0338 flih_util+000258
  ()
  

Problem conclusion

• Fixed code to avoid hang and crash.
  

Temporary fix

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

Comments

• 6100-09 - use AIX APAR IJ00360
  6100-09 - use AIX APAR IJ00360
  7100-04 - use AIX APAR IJ00519
  7100-05 - use AIX APAR IJ01304
  7200-01 - use AIX APAR IV96360
  7200-02 - use AIX APAR IJ01262
  

APAR Information

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

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

  IJ00360

Fix information

• Fixed component name

  AIX V7.2

• Fixed component ID

  5765CD200

Applicable component levels

• R720 PSY U876741

     UP18/05/01 I 1000 Ž

PTF to Fileset Mapping

• U876741 devices.pciex.df1060e214103404.com 7.2.1.3