Bug ID 744407: While the client has been closed, iRule function should not try to check on a closed session

Last Modified: Sep 27, 2019

Bug Tracker

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,,, 13.1.3, 14.0.0,,,,,, 14.0.1, 14.1.0,,,,,,, 14.1.2,, 15.0.0, 15.0.1

Opened: Sep 18, 2018
Severity: 3-Major


tmm cores. System posts a message: access::session exists is used during CLIENT_CLOSED iRule event.


tmm may core. Traffic disrupted while tmm restarts.


-- Client has closed the connection. -- iRule function tries to check on a closed session. -- An 'access session::exists' command is used inside the iRule event CLIENT_CLOSED.


Do not use the iRule command 'access session::exists' inside CLIENT_CLOSED.

Fix Information


Behavior Change