Bug ID 1106673: Tmm crash with FastL4 virtual servers and CMP disabled

Last Modified: Sep 29, 2022

Bug Tracker

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

Known Affected Versions:
15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4, 15.1.0, 15.1.0.1, 15.1.0.2, 15.1.0.3, 15.1.0.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 16.0.0, 16.0.0.1, 16.0.1, 16.0.1.1, 16.0.1.2, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 17.0.0, 17.0.0.1

Opened: May 16, 2022
Severity: 3-Major

Symptoms

With CMP disabled, all traffic is forwarded to one TMM thread. A crash occurs when these flows are torn down.

Impact

Traffic disrupted while tmm restarts.

Conditions

The following is configured on a virtual server: -- A fastL4 profile -- CMP is disabled -- An IPS firewall policy

Workaround

Enable CMP on the virtual server. tmsh modify ltm virtual <virtual_server_name> cmp-enabled yes

Fix Information

None

Behavior Change