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
9 static struct kprobe kp;
10
11 static 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
19 static 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, target, 0);
25 ret = register_kprobe(kp);
26 if (!ret)
27 unregister_kprobe(kp);
28 KUNIT_EXPECT_EQ(test, 0, ret);
29 setup_kprobe(test, kp, target, offset);
30 ret = register_kprobe(kp);
31 KUNIT_EXPECT_EQ(test, -EINVAL, ret);
32 if (!ret)
33 unregister_kprobe(kp);
34 }
35
36 static void test_kprobe_odd(struct kunit *test)
37 {
38 test_kprobe_offset(test, &kp, "kprobes_target_odd",
39 kprobes_target_odd_offs);
40 }
41
42 static void test_kprobe_in_insn4(struct kunit *test)
43 {
44 test_kprobe_offset(test, &kp, "kprobes_target_in_insn4",
45 kprobes_target_in_insn4_offs);
46 }
47
48 static void test_kprobe_in_insn6_lo(struct kunit *test)
49 {
50 test_kprobe_offset(test, &kp, "kprobes_target_in_insn6_lo",
51 kprobes_target_in_insn6_lo_offs);
52 }
53
54 static void test_kprobe_in_insn6_hi(struct kunit *test)
55 {
56 test_kprobe_offset(test, &kp, "kprobes_target_in_insn6_hi",
57 kprobes_target_in_insn6_hi_offs);
58 }
59
60 static 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
68 static struct kunit_suite kprobes_test_suite = {
69 .name = "kprobes_test_s390",
70 .test_cases = kprobes_testcases,
71 };
72
73 kunit_test_suites(&kprobes_test_suite);
74
75 MODULE_DESCRIPTION("KUnit tests for kprobes");
76 MODULE_LICENSE("GPL");
77
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