What the actual motherfucking fuck? What have I done so bad in my previous life to get this shit? Did I slay little cute puppies?

So I got a call from the client and he argued about how slow the system runs or that it happens that the copy commands fails.

It sounded interessting and I didn't know in what kind of rabbithole I'm going through.
The system is always in the year 2012 (don't ask why, it's just hardcoded ... another rant story).
Some of you maybe know that bug because it was very popular.
Wayne train, let's continue -> I saw that the copy command fails sometimes and that the system has a high CPU usage and futex lockups. Pretty strange and doesn't seem obivous why that is.
Sadly there are no logs in the system (not implemented and again ... another.fucking.rant.story.)

The system is kinda old and to patch it would mean to port shitty written programs and I don't have the time for that..

After searching and testing for weeks I finally found the fucking fuckidi fucked up problem.
A WRONG IMPLEMENTATION OF THE MOTCHERFUCKING LEAPSECOND CAUSED THIS SHITTY SHIT. A.FUCKING.LEAPSECOND. In all this time I questioned my OWN FUCKING SANITY! NOT EVERY FUCKING MINUTE HAS 60 SECONDS. THERE ARE SOME WITH 61!!
WHAT.THE.ACTUCAL.FUUUUUUUUUUUUUCK.........

I'm just mad af. It's such a release to find the solution but it's so fucked up you just wanna jump of a bridge

Here if you are interested about this bullshit: https://bugs.launchpad.net/ubuntu/...