Bug ID 429429: Disabling plugins can leak memory

Last Modified: Nov 22, 2021

Bug Tracker

Affected Product:  See more info
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

Symptoms

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.

Impact

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

Conditions

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

Workaround

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