Bug ID 448606: tmm cores with panic string %slistener ref non-zero%s

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.6.2 HF1, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1

Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF9, 11.2.1 HF15

Opened: Feb 11, 2014

Severity: 3-Major

Related Article: K15556


The listener ref count might overflow and cause a TMM core and crash.


TMM cores with panic string tmm_panic ... %slistener ref non-zero%s. Traffic disrupted while tmm restarts.


This intermittent issue occurs when the listener ref count increases and is never released.



Fix Information

The listener ref count no longer overflows and causes a TMM core and crash.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips