Bug ID 745600: Tmm crash and core using iRule

Last Modified: Nov 22, 2021

Bug Tracker

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

Known Affected Versions:
13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.2, 13.1.1.3, 13.1.1.4, 13.1.1.5, 14.0.0, 14.0.0.1, 14.0.0.2, 14.0.0.3, 14.0.0.4, 14.0.0.5, 14.0.1, 14.0.1.1

Fixed In:
14.1.0, 13.1.3

Opened: Oct 01, 2018
Severity: 2-Critical

Symptoms

Using iRule function access_session_create_cmd(), while session creation in progress, an internal timer gets set to fire after 1000 msec. In the interim, if the connflow is deleted or removed, an internal inconsistency occurs, so when that timer goes off, tmm restarts and generates a core.

Impact

Tmm crashes. Traffic disrupted while tmm restarts.

Conditions

-- Creating access session using iRule. -- The session connection is deleted or removed. -- The 1000 msec interval passes, and the timer attempts to fire.

Workaround

None.

Fix Information

The issue no longer occurs, as the internal inconsistency is now prevented.

Behavior Change