1 // SPDX-License-Identifier: GPL-2.0+
2 
3 #include <linux/error-injection.h>
4 #include <linux/kprobes.h>
5 #include <linux/uaccess.h>
6 
override_function_with_return(struct pt_regs * regs)7 void override_function_with_return(struct pt_regs *regs)
8 {
9 	/*
10 	 * Emulate 'blr'. 'regs' represents the state on entry of a predefined
11 	 * function in the kernel/module, captured on a kprobe. We don't need
12 	 * to worry about 32-bit userspace on a 64-bit kernel.
13 	 */
14 	regs_set_return_ip(regs, regs->link);
15 }
16 NOKPROBE_SYMBOL(override_function_with_return);
17