riscv: process: fix kernel info leakage
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 v5.10.155 by commit e56d18a976dda653194218df6d40d8122c775712, it was introduced in version v4.15 by commit 7db91e57a0acde126a162ababfb1e0ab190130cb. For more details please see the references link.