Bug ID 468204: TMM can crash with SIGFPE assertion 'valid ctx crule_cnt' when a firewall iRule and OneConnect are used together.

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP All(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, 11.5.10, 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, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8

Fixed In:
11.6.0, 11.5.9

Opened: Jun 20, 2014
Severity: 2-Critical


TMM crashes with SIGFPE assertion 'valid ctx crule_cnt'.


TMM dumps core and restarts. This can disrupt traffic or lead to a failover on redundant units.


-- Firewall iRule configured. -- OneConnect configured. Note: A firewall policy (eventually referencing a firewall iRule) can be applied to places other than a virtual server. For instance, a firewall policy can be applied to a route-domain. This might still cause interaction with a virtual server equipped with OneConnect, and lead to the issue.


There is no workaround other than not simultaneously configuring firewall iRules and OneConnect.

Fix Information

TMM no longer crashes with SIGFPE assertion 'valid ctx crule_cnt'.

Behavior Change