Bug ID 755854: TMM crash due to missing classification category

Last Modified: Apr 29, 2023

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,,, 14.1.5,,,,

Fixed In:

Opened: Jan 18, 2019

Severity: 3-Major


TMM crashes when 'Thin_Client' category is used. The tmm2 log contains messages: -- notice panic: ../modules/hudfilter/gpa/gpa_config.c:507: Assertion "Category does not exist" failed.


TMM restart loop. Traffic disrupted while tmm restarts.


-- TMM is configured for debug mode (which might occur in cases described in K11490: Configuring the Traffic Management Microkernel to use debug mode :: https://support.f5.com/csp/article/K11490). -- There is a classification configured with a category that does not exist.


Change the category to something that exists to load tmm.debug.

Fix Information

TMM no longer crashes with 'Thin_client' category.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips