Bug ID 686996: TMM core under heavy load with PEM

Last Modified: Jan 29, 2019

Bug Tracker

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

Known Affected Versions:
13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4

Fixed In:
14.0.0

Opened: Oct 03, 2017
Severity: 2-Critical

Symptoms

An internal race condition when deleting stale PEM data may cause a TMM core due to a use after free.

Impact

Traffic disrupted while tmm restarts.

Conditions

PEM policies configured. The crash is more likely with CGNAT / FWNAT configured and after a CMP state change such as after a blade failure.

Workaround

none

Fix Information

The race condition is eliminated. TMM does not core under heavy load with PEM.

Behavior Change