https://stackoverflow.com/questions/11140136/whats-the-purpose-of-the-ud2-opcode-in-the-linux-kernel
https://stackoverflow.com/questions/35536597/whats-the-point-of-adding-ud2-after-writing-to-ds0x0?rq=3
https://habr.com/ru/articles/1049052/
https://habr.com/ru/news/1049636/comments/
https://habr.com/ru/news/1049512/
https://habr.com/ru/companies/ruvds/articles/1049502/
https://habr.com/ru/users/PXI/
http://132.243.17.128/
https://habr.com/ru/news/1049002/