Bug ID 511478: Possible TMM crash when evaluating expression for per-request policy agents.

Last Modified: Oct 01, 2018

Bug Tracker

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

Known Affected Versions:
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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 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

Fixed In:
12.0.0, 11.6.1 HF1, 11.5.4 HF3

Opened: Mar 10, 2015
Severity: 2-Critical

Symptoms

TMM might crash when evaluating expressions in per-request policy agents and possible loss of service.

Impact

Traffic disrupted while tmm restarts.

Conditions

APM is licensed and per-request policy is attached to the virtual. Per-request policy have agents which have configured expressions.

Workaround

Remove expressions from agent in per-request policy.

Fix Information

Applied a different mechanism to evaluation agent's expression to fix this possible crash.

Behavior Change