Bug ID 753383: Deadlock While Attaching NDAL Devices

Last Modified: May 29, 2024

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

Known Affected Versions:
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, 14.1.0, 14.1.0.1, 14.1.0.2, 14.1.0.3, 14.1.0.5, 14.1.0.6, 14.1.2, 14.1.2.1, 14.1.2.2, 14.1.2.3, 14.1.2.4, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 15.0.0, 15.0.1, 15.0.1.1, 15.0.1.2, 15.0.1.3, 15.0.1.4

Fixed In:
15.1.0, 14.1.4

Opened: Dec 18, 2018

Severity: 3-Major

Symptoms

A potential deadlock may occur while Network Device Abstraction Layer (NDAL) Interfaces are being attached.

Impact

TMM is unable to connect to mcpd. The tmm process cannot reconnect to mcpd in retries, if a connection is not established on tmm startup.

Conditions

-- Using BIG-IP Virtual Edition. -- Attaching NDAL devices. -- The tmm has not yet established a connection with mcpd.

Workaround

None

Fix Information

Deadlock no longer occurs while NDAL devices are being attached.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips