Describe the bug
The internal table mutex for the timer callback (timecb) object type is missing/not implemented. This leave a potential race condition as timer callbacks are registered.

To Reproduce
Not observed in real execution at this time - but theoretically possible if two timers are registered by two tasks at the exact same time.

Expected behavior
Should be protected.

System observed on:
Ubuntu 20.04

Additional context
The global lock table is simply missing an entry for this object type.

Reporter Info
Joseph Hickey, Vantage Systems, Inc.