Bug ID 585094: tmm crash in FPS plugin

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4

Opened: Apr 04, 2016
Severity: 3-Major

Symptoms

Internal TMM message counter is not decreased correctly.

Impact

Possible TMM crash.

Conditions

When FPS sources a response (like injected JavaScript). And at some specific circumstances inside TMM (order of traffic events). When there are many requests on a persistent HTTP connection.

Workaround

Limit the number of requests on a persistent HTTP connection (e.g. max-requests=64). This prevents the counter - which is 7 bits long - to overflow.

Fix Information

None

Behavior Change