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

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
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, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4

Fixed In:
12.1.0, 11.6.1 HF2

Opened: Jan 28, 2016

Severity: 2-Critical

Related 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

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips