Bug ID 676808: FPS: tmm may crash on response with large payload from server

Last Modified: Oct 06, 2020

Bug Tracker

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

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3

Fixed In:
13.1.0, 13.0.1, 12.1.3

Opened: Aug 03, 2017
Severity: 2-Critical


A request to a unprotected FPS URL may cause tmm crash if response payload is large and the URL was configured via live update.


Traffic disrupted while tmm restarts.


1. Page is not protected. 2. Large response payload (e.g.,50 KB). 3. FPS registered for response event (this will happen if a global URL (configured via live update) was matched).


There is no workaround at this time.

Fix Information

FPS will check for fast response situation and will act accordingly.

Behavior Change