Bug ID 527016: CLASSIFICATION_DETECTED irule event results in tmm core

Last Modified: Aug 19, 2026

Affected Product(s):
BIG-IP All(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, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3

Fixed In:
12.0.0

Opened: Jun 08, 2015

Severity: 2-Critical

Symptoms

If an irule script which uses the CLASSIFICATION_DETECTED is used, then it may result in a tmm core.

Impact

Traffic disrupted while tmm restarts.

Conditions

Configure an ltm irule with CLASSIFICATION_DETECTED event, and the body of the script contains atleast one irule command that runs asynchronously.

Workaround

None

Fix Information

Using the CLASSIFICATION_DETECTED irule event does not cause tmm to core.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips