arm64: fix oops in concurrently setting insn_emulation sysctls
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v4.19.256 by commit b51881b1da57fe9877125dfdd0aac5172958fcfd. For more details please see the references link.