The user is reporting an issue with KernelSU on a Xiaomi Redmi Note 8 Pro running MIUI 12.5.6.0 with a kernel version of 4.14.356. The issue arises when compiling the kernel, specifically with the access_ok function in the kpm driver. The user has noticed that the access_ok function requires additional arguments (VERIFY_READ and VERIFY_WRITE) in Linux 4.20 and below when compared to the upstream Linux 4.20 and their kernel. The user has provided a series of compilation errors and warnings that occur when attempting to compile the kernel with the nongki branch. The user expects that the compilation errors should not occur, and they have attached relevant logs and screenshots (although the screenshots are not visible in the provided text). The user mentions additional warnings that are generated during the compilation process, which seem to be related to undefined macros such as __SULOG_GATE. The user is seeking assistance in resolving these compilation issues with KernelSU.