| // SPDX-License-Identifier: GPL-2.0 |
| |
| #include <linux/linkage.h> |
| #include <linux/error-injection.h> |
| #include <linux/kprobes.h> |
| #include <linux/objtool.h> |
| |
| asmlinkage void just_return_func(void); |
| |
| asm( |
| ".text\n" |
| ".type just_return_func, @function\n" |
| ".globl just_return_func\n" |
| ASM_FUNC_ALIGN |
| "just_return_func:\n" |
| ANNOTATE_NOENDBR |
| ASM_RET |
| ".size just_return_func, .-just_return_func\n" |
| ); |
| |
| void override_function_with_return(struct pt_regs *regs) |
| { |
| regs->ip = (unsigned long)&just_return_func; |
| } |
| NOKPROBE_SYMBOL(override_function_with_return); |
