// SPDX-License-Identifier: GPL-2.0+ #include <linux/error-injection.h> #include <linux/kprobes.h> #include <linux/uaccess.h> void override_function_with_return(struct pt_regs *regs) { /* * Emulate 'blr'. 'regs' represents the state on entry of a predefined * function in the kernel/module, captured on a kprobe. We don't need * to worry about 32-bit userspace on a 64-bit kernel. */ regs_set_return_ip(regs, regs->link); } NOKPROBE_SYMBOL(override_function_with_return);