Bug ID 570419: Use of session DB on multi-process appliances and blades may core.

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(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

Fixed In:
12.1.0, 11.6.1 HF2

Opened: Jan 28, 2016
Severity: 2-Critical
Related AskF5 Article:
K10037634

Symptoms

On selected devices and blades, tmm runs multiple processes. When running multiple processes, the session DB may occasionally attempt an operation that will cause a tmm segfault.

Impact

Outage and restart of tmm. This applies when bringing up blades as well as bringing peers online.

Conditions

In order to experience this failure, tmm must be running in multiple processes on the appliance or on the blade, and session DB usage is required with mirroring.

Workaround

None.

Fix Information

Use of session DB on multi-process appliances and blades no longer cores when bringing up blades as well as bringing peers online.

Behavior Change