Two threads ran free, no lock in place,
A harmless counter, shared in space.

One meant to add, one meant to check,
But time, not logic, crossed the spec.

They started fine, they ended wrong,
A state that shouldn’t last this long.

Sometimes it's fine. Sometimes it's pain.
Sometimes it never shows again.

You grep your logs, you trace each call,
The bug is gone – was it there at all?

With every run, a different fate,
You learn to dread the word: "nondeterminate."

You add a lock. It deadlocks tight.
You drop it – BOOM – it's broken night.

The semaphores, the spinlocks dance,
You wonder: "Was it chance... or glance?"

It passes tests on local run,
But fails in prod – that's when it's fun.

And when you fix it, patch by patch,
The next one waits – a perfect match.

Final Line:

No virus spreads with such precision
As unsynchronized decision.