Bug ID 452334: TMM might crash when categorizing the payload for Secure Web Gatway (SWG).

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP SWG(all modules)

Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9

Fixed In:

Opened: Mar 14, 2014
Severity: 3-Major
Related AskF5 Article:


This issue might result into a TMM crash and generating TMM core file.


Traffic disrupted while tmm restarts.


Analyzing bigger payloads under SWG might result in this issue.


This issue has no workaround.

Fix Information

Issue was seen because the TIMER associated with content scanning was being disabled as soon as the content scanning is done. This results in firing the timer later on which try to free up some resources which are already freed and hence results into a TMM crash. This issue is now fixed.

Behavior Change