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tainted kernel on kernel panics kernel oops and bugs

to check if your kernel is tainted

sudo journalctl -k | grep taint

on kernel panic,oops,bugs you can check the line starting with "CPU" and it will either indicate "Not tainted" or "Tainted"

if it is Tainted, the letters below will give you the reason why

'P' - Proprietary module has been loaded.

'F' - Module has been forcibly loaded.

'S' - SMP with CPUs not designed for SMP.

'R' - User forced a module unload.

'M' - Machine had a machine check experience.

'B' - System has hit bad_page.