Bug ID 2221017: The BIG-IP virtio driver may core during startup

Last Modified: Feb 10, 2026

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

Known Affected Versions:
17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.1.3.1, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 17.5.1.4, 21.0.0, 21.0.0.1

Opened: Feb 09, 2026

Severity: 3-Major

Symptoms

If a failure occurs in the BIG-IP's virtio driver during startup, it may core when attempting to modify statistics that have not yet been initialized.

Impact

TMM cores and restarts.

Conditions

-- Virtio driver in use. -- BIG-IP is starting up. -- An error occurs that is tracked by a statistic.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips