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use ksu_patch_text in replace_syscall_table, remove finit_module hook
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目前,KernelSU 中有多处 hook 依赖 kprobes 和 tracepoint ,然而这些 hook 的回调运行在原子上下文,不便于调用可能睡眠的函数(如 kmalloc(GFP_KERNEL), strncpy_from_user 等),导致部分代码需要移动到 task_work 中执行或者不得不以不安全的方式执行(如多处读用户内存的代码),在代码编写上有诸多不便。我们希望将这些 hook 重构为 syscall hook 或者 inline hook ,以避免 hook 回调处于原子上下文中。
目前状况: