Minecraft Version

1.20.1 (LTS)

Mod Loader

Forge

Describe the Issue

Playing with Legendary Survival Overhaul and Zombie Survival Kit (latest 1.20.1 versions) and hardcore revival, I put on the Bomb Suit armor set and died, this caused me to get stuck in a permanent loop of dying, but not really cause I didn't get put in the revival screen, nor did I respawn, I'm just taking damage over and over while being on 0 hearts

Logs

No log

Hardcore Revival will only trigger the knockout if you'd receive damage that would kill you, and then reduces that damage to keep you alive with half a heart while putting you in the knockout state. That knockout state is completely reset when /revive is used, along with all of its restrictions.

That means anything experienced afterwards is most likely caused by some other mod that did not properly handle the fact that your death was prevented initially. It would probably be a mod that does something to your player on death, e.g. I've heard of Zombie and Vampire related mods having issues with this.

#165 sounds very similar to this, so perhaps you have overlapping mods.