1// SPDX-License-Identifier: GPL-2.0+
2
3#include <linux/kernel.h>
4#include <linux/kprobes.h>
5#include <linux/random.h>
6#include <kunit/test.h>
7#include "test_kprobes.h"
8
9static struct kprobe kp;
10
11static void setup_kprobe(struct kunit *test, struct kprobe *kp,
12 const char *symbol, int offset)
13{
14 kp->offset = offset;
15 kp->addr = NULL;
16 kp->symbol_name = symbol;
17}
18
19static void test_kprobe_offset(struct kunit *test, struct kprobe *kp,
20 const char *target, int offset)
21{
22 int ret;
23
24 setup_kprobe(test, kp, symbol: target, offset: 0);
25 ret = register_kprobe(p: kp);
26 if (!ret)
27 unregister_kprobe(p: kp);
28 KUNIT_EXPECT_EQ(test, 0, ret);
29 setup_kprobe(test, kp, symbol: target, offset);
30 ret = register_kprobe(p: kp);
31 KUNIT_EXPECT_EQ(test, -EINVAL, ret);
32 if (!ret)
33 unregister_kprobe(p: kp);
34}
35
36static void test_kprobe_odd(struct kunit *test)
37{
38 test_kprobe_offset(test, kp: &kp, target: "kprobes_target_odd",
39 offset: kprobes_target_odd_offs);
40}
41
42static void test_kprobe_in_insn4(struct kunit *test)
43{
44 test_kprobe_offset(test, kp: &kp, target: "kprobes_target_in_insn4",
45 offset: kprobes_target_in_insn4_offs);
46}
47
48static void test_kprobe_in_insn6_lo(struct kunit *test)
49{
50 test_kprobe_offset(test, kp: &kp, target: "kprobes_target_in_insn6_lo",
51 offset: kprobes_target_in_insn6_lo_offs);
52}
53
54static void test_kprobe_in_insn6_hi(struct kunit *test)
55{
56 test_kprobe_offset(test, kp: &kp, target: "kprobes_target_in_insn6_hi",
57 offset: kprobes_target_in_insn6_hi_offs);
58}
59
60static struct kunit_case kprobes_testcases[] = {
61 KUNIT_CASE(test_kprobe_odd),
62 KUNIT_CASE(test_kprobe_in_insn4),
63 KUNIT_CASE(test_kprobe_in_insn6_lo),
64 KUNIT_CASE(test_kprobe_in_insn6_hi),
65 {}
66};
67
68static struct kunit_suite kprobes_test_suite = {
69 .name = "kprobes_test_s390",
70 .test_cases = kprobes_testcases,
71};
72
73kunit_test_suites(&kprobes_test_suite);
74
75MODULE_LICENSE("GPL");
76

source code of linux/arch/s390/lib/test_kprobes.c