PH07516: CRASH OCCURS IF ADDING IPV6 ADDRESSES

9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
8.5.5.17: WebSphere Application Server V8.5.5 Fix Pack 17
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
8.5.5.20: WebSphere Application Server V8.5.5.20
8.5.5.18: WebSphere Application Server V8.5.5 Fix Pack 18
8.5.5.19: WebSphere Application Server V8.5.5 Fix Pack 19
8.5.5.16: WebSphere Application Server V8.5.5 Fix Pack 16
8.5.5.21: WebSphere Application Server V8.5.5.21

APAR status

• Closed as program error.

Error description

• crash occurs if adding ipv6 addresses
  

Local fix

• Disable MODS
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  IBM WebSphere Application Server Load       *
  *                  Balancer for IPv4 and IPv6 users            *
  ****************************************************************
  * PROBLEM DESCRIPTION: A crash can occur when using IPv6       *
  *                      servers if the name or IP exceeds 24    *
  *                      characters                              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When using IPv6 servers, a crash can occur if adding the
  server using the IPv6 address or an IPv6 hostname that exceeds
  24 characters.
  

Problem conclusion

• The load balancer for IPv4 and IPv6 was storing the IPv6
  server ID (Id representing the IPv6 address or hostname
  depending on how the server is added) is a string which was
  too short. If memory overlay detection is enabled, this will
  be detected and a crash will occur.
  
  Fix (to increase the string length to proper size) is provided
  in :
  8.5.5.16
  9.0.0.11
  

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

  WS EDGE LB IPV4

• Fixed component ID

  5724H8812

Applicable component levels

• R850 PSY

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