File: error-inject.c

package info (click to toggle)
linux 6.19.2-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 1,759,612 kB
  • sloc: ansic: 27,004,852; asm: 273,402; sh: 151,313; python: 81,277; makefile: 58,544; perl: 34,311; xml: 21,064; cpp: 5,984; yacc: 4,841; lex: 2,901; awk: 1,707; sed: 30; ruby: 25
file content (25 lines) | stat: -rw-r--r-- 559 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
// 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 "\n"
		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);