Bug ID 427448: MCPd memory leak

Last Modified: Nov 22, 2021

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
11.3.0, 11.4.0

Fixed In:
11.5.0, 11.4.1, 11.4.0 HF4

Opened: Aug 08, 2013

Severity: 2-Critical

Related Article: K14824


In 11.4.0, a memory leak inside the MCPd process, which would cause memory exhaustion, could occur over time. The leak was only triggered under certain uses of the product and not during all operations.


The system exhausts all memory resources and eventually is restarted by the operating system, leaving a core containing messages such as 'notice mpi_net_node_deactivate: the node at rank 78 is already deactivated'. The BIG-IP system may experience resource exhaustion and possible failover


This issue occurs when BIG-IP add-on modules use the mcpd process to communicate with TMM.



Fix Information

The memory leak no longer occurs in the MCPd process, so that the previously memory exhaustion no longer occurs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips