| 1 | // SPDX-License-Identifier: GPL-2.0+ |
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| 2 | |
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| 3 | #include <linux/kernel.h> |
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| 4 | #include <linux/kprobes.h> |
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| 5 | #include <linux/random.h> |
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| 6 | #include <kunit/test.h> |
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| 7 | #include "test_kprobes.h" |
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| 8 | |
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| 9 | static struct kprobe kp; |
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| 10 | |
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| 11 | static void setup_kprobe(struct kunit *test, struct kprobe *kp, |
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| 12 | const char *symbol, int offset) |
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| 13 | { |
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| 14 | kp->offset = offset; |
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| 15 | kp->addr = NULL; |
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| 16 | kp->symbol_name = symbol; |
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| 17 | } |
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| 18 | |
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| 19 | static void test_kprobe_offset(struct kunit *test, struct kprobe *kp, |
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| 20 | const char *target, int offset) |
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| 21 | { |
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| 22 | int ret; |
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| 23 | |
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| 24 | setup_kprobe(test, kp, symbol: target, offset: 0); |
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| 25 | ret = register_kprobe(p: kp); |
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| 26 | if (!ret) |
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| 27 | unregister_kprobe(p: kp); |
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| 28 | KUNIT_EXPECT_EQ(test, 0, ret); |
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| 29 | setup_kprobe(test, kp, symbol: target, offset); |
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| 30 | ret = register_kprobe(p: kp); |
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| 31 | KUNIT_EXPECT_EQ(test, -EINVAL, ret); |
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| 32 | if (!ret) |
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| 33 | unregister_kprobe(p: kp); |
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| 34 | } |
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| 35 | |
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| 36 | static void test_kprobe_odd(struct kunit *test) |
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| 37 | { |
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| 38 | test_kprobe_offset(test, kp: &kp, target: "kprobes_target_odd" , |
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| 39 | offset: kprobes_target_odd_offs); |
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| 40 | } |
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| 41 | |
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| 42 | static void test_kprobe_in_insn4(struct kunit *test) |
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| 43 | { |
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| 44 | test_kprobe_offset(test, kp: &kp, target: "kprobes_target_in_insn4" , |
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| 45 | offset: kprobes_target_in_insn4_offs); |
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| 46 | } |
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| 47 | |
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| 48 | static void test_kprobe_in_insn6_lo(struct kunit *test) |
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| 49 | { |
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| 50 | test_kprobe_offset(test, kp: &kp, target: "kprobes_target_in_insn6_lo" , |
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| 51 | offset: kprobes_target_in_insn6_lo_offs); |
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| 52 | } |
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| 53 | |
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| 54 | static void test_kprobe_in_insn6_hi(struct kunit *test) |
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| 55 | { |
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| 56 | test_kprobe_offset(test, kp: &kp, target: "kprobes_target_in_insn6_hi" , |
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| 57 | offset: kprobes_target_in_insn6_hi_offs); |
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| 58 | } |
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| 59 | |
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| 60 | static struct kunit_case kprobes_testcases[] = { |
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| 61 | KUNIT_CASE(test_kprobe_odd), |
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| 62 | KUNIT_CASE(test_kprobe_in_insn4), |
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| 63 | KUNIT_CASE(test_kprobe_in_insn6_lo), |
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| 64 | KUNIT_CASE(test_kprobe_in_insn6_hi), |
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| 65 | {} |
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| 66 | }; |
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| 67 | |
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| 68 | static struct kunit_suite kprobes_test_suite = { |
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| 69 | .name = "kprobes_test_s390" , |
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| 70 | .test_cases = kprobes_testcases, |
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| 71 | }; |
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| 72 | |
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| 73 | kunit_test_suites(&kprobes_test_suite); |
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| 74 | |
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| 75 | MODULE_DESCRIPTION("KUnit tests for kprobes" ); |
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| 76 | MODULE_LICENSE("GPL" ); |
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| 77 | |
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