Bug ID 434400: tmm might core with rate-limiting on virtual server

Last Modified: May 14, 2019

Bug Tracker

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

Known Affected Versions:
11.2.1, 11.4.0, 11.4.1, 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

Fixed In:
11.6.0, 11.5.2, 11.4.1 HF9

Opened: Oct 17, 2013
Severity: 3-Major
Related AskF5 Article:
K15803

Symptoms

tmm might core when rate-limiting is configured on a virtual server.

Impact

Traffic disrupted while tmm restarts.

Conditions

This occurs on a virtual server with rate-limiting enabled and unexpected filter operations that send LB selection after connection is in progress. This might also occur with an iRule that behaves similarly, for example, issuing an LB command after a TCP::release.

Workaround

None

Fix Information

The connection is terminated and tmm core no longer occurs.

Behavior Change