1 // SPDX-License-Identifier: GPL-2.0
2 
3 #include <linux/error-injection.h>
4 #include <linux/kprobes.h>
5 
6 asmlinkage void just_return_func(void);
7 
8 asm(
9 	".text\n"
10 	".type just_return_func, @function\n"
11 	".globl just_return_func\n"
12 	"just_return_func:\n"
13 	"	ret\n"
14 	".size just_return_func, .-just_return_func\n"
15 );
16 
override_function_with_return(struct pt_regs * regs)17 void override_function_with_return(struct pt_regs *regs)
18 {
19 	regs->ip = (unsigned long)&just_return_func;
20 }
21 NOKPROBE_SYMBOL(override_function_with_return);
22