1 // SPDX-License-Identifier: GPL-2.0 1
2
3 #include <linux/linkage.h>
4 #include <linux/error-injection.h>
5 #include <linux/kprobes.h>
6 #include <linux/objtool.h>
7
8 asmlinkage void just_return_func(void);
9
10 asm(
11 ".text\n"
12 ".type just_return_func, @function\n"
13 ".globl just_return_func\n"
14 ASM_FUNC_ALIGN
15 "just_return_func:\n"
16 ANNOTATE_NOENDBR
17 ASM_RET
18 ".size just_return_func, .-just_return
19 );
20
21 void override_function_with_return(struct pt_r
22 {
23 regs->ip = (unsigned long)&just_return
24 }
25 NOKPROBE_SYMBOL(override_function_with_return)
26
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