IV16584: CRASH IN SNA_V5ROUTER64

Communications Server for AIX, Version 6.4 -- Latest PTFs

APAR status

• Closed as program error.

Error description

• Communications Server for AIX, Version 6.4
  ------------------------------------------
  Crash in sna_v5router64 during startup at boot time.
  

Local fix

Problem summary

• USERS AFFECTED: All users.
  
  PROBLEM DESCRIPTION:
  During a failed startup of SNA at bot time, the kernel crashed
  with a stack showing the logging function
  vll_router_write_log_to_buf called from vpr_stream_open. The
  problem was seen when snatpsrvd is attempting to issue an open
  to the logger function in the kernel, but any of the SNA
  processes could trigger this. The dump showed that the
  snaerrlog process was no longer running.
  
  PROBLEM SUMMARY:
  There is a very small window where the logging code has been
  initialized and then terminated while a log entry is being
  generated.
  

Problem conclusion

• Additional locking code has been added to protect against this
  window.
  

Temporary fix

• sna_v5router64
  

Comments

APAR Information

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

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

  LI76763 LI76764 LI76765 LI77291 LI77292 LI77293 IV40852

Fix information

• Fixed component name

  CS AIX V6.X

• Fixed component ID

  5765E5100

Applicable component levels

• R631 PSY

     UP

• R640 PSY U851826

     UP12/09/11 I 1000