Tainting the kernel

Few weeks ago, I tried tainting the kernel by undervolting my T470 laptop using [throttled](https://www.google.com/search?q=throttled). By trying, I also found that there was little to none impact in terms of battery life or performance. My laptop just became suddenly very unreliable with frequent freezes. I tried lowering the offset but still the same. I ended up not undervolting my laptop and leave the kernel untainted.

If you ever feel like your Linux laptop is unreliable, try checking if the kernel is tainted.

```
cat /proc/sys/kernel/tainted
```

The output of `0` means the kernel is not tainted.