Bug ID 484013: tmm might crash under load when logging profile is used with packet classification

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.6.2 HF1, 11.6.0, 11.6.1, 11.6.2, 11.6.3,,,,, 11.6.4, 11.6.5,,,, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.6.1 HF1, 11.5.1 HF6

Opened: Oct 11, 2014

Severity: 2-Critical

Related Article: K12435402


When tmm is under heavy load it may run out of memory and crash under certain conditions.


Traffic disrupted while tmm restarts.


This occurs when the following conditions are met: 1. Packet classification is enabled 2. Security logging profile is used with 'log translation fields' option enabled. 3. Fast flow forwarding is enabled on forwarding virtual server.


To work around this, do one of the following: -- Disable 'log translation fields' in the security logging profile. -- Disable fast flow forwarding.

Fix Information

This fixes a memory leak when TMM is overloaded and forwards flows to the peer, and packet classification is enabled with 'log translation fields' in the logging profile.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips