Bug ID 429429: Disabling plugins can leak memory

Last Modified: Nov 22, 2021

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

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1

Fixed In:
11.5.0, 11.4.1 HF6, 11.3.0 HF8

Opened: Aug 31, 2013

Severity: 3-Major

Related Article: K14802


If a plugin is disabled, the mechanism to recover the memory it has allocated related to a traffic flow when the traffic flow ends is subverted, so that memory leaks.


Memory used by the tmm process increases, until, eventually, the tmm process restarts.


This can happen when plugins are programmatically disabled, for example, by an iRule.


Avoid disabling plugins programmatically. Doing so might not be practical.

Fix Information

Disabling plugins programmatically is now supported, and TMM memory use does not increase with traffic that would otherwise involve those plugins.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips