IJ30269: VIOS CRASH IN NPIV_FAIL_COMMAND AFTER LINK DOWN EVENT

APAR status

• Closed as program error.

Error description

• VIOS can crash with the following stack trace :
  CRASH INFORMATION:
  CPU 4 CSA F000000030019600 at time of crash,
   error code for LEDs: 30000000
  pvthread+09F600 STACK:
  [0000E864]___memset64+00005C ()
  [F1000000C03373E4]vfc_host:npiv_fail_command+000884 (...)
  [F1000000C03363C0]vfc_host:npiv_fail_crq+0001C0 (...)
  [F1000000C03172C4]vfc_host:npiv_crq_reader+000C04 (...)
  [F1000000C0318934]vfc_host:npiv_cmd_handler+0000B4 (??)
  [F1000000C0319B30]vfc_host:npiv_cmdh_thr_sched+0000D0
  (??)
  [F1000000C0318D30]vfc_host:npiv_thr_sched_run+000070 (??)
  
  while there's a disconnect running on the same
  vfchost :
  [00698CB8]slock+000158 (...)
  [000090C4].disable_lock+0000C0 ()
  [F1000000C0323538]vfc_host:npiv_disconnect+000478 (??)
  [F1000000C034A69C]vfc_host:npiv_kproc+00021C (...)
  

Local fix

Problem summary

• VIOS 3.1.1 crashes with below stack,
   F1000000C03373E4 npiv_fail_command+000884 (??, ??, ??, ??, ??)
   F1000000C03363C0 npiv_fail_crq+0001C0 (??, ??)
   F1000000C03172C4 npiv_crq_reader+000C04 (??, ??)
   F1000000C0318934 npiv_cmd_handler+0000B4 (??)
   F1000000C0319B30 npiv_cmdh_thr_sched+0000D0 (??)
   F1000000C0318D30 npiv_thr_sched_run+000070 (??)
  

Problem conclusion

• code modified to handle the error properly
  

Temporary fix

Comments

APAR Information

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

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

Fix information

• Fixed component name

  VIRTUAL I/O SER

• Fixed component ID

  5765G3400

Applicable component levels

• R310 PSY

     UP

PTF to Fileset Mapping

• U888086 devices.vdevice.IBM.vfc-server.rte 7.2.4.4