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455a35a6 RV |
1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
2 | /* | |
617f55e2 | 3 | * Test cases for arithmetic overflow checks. See: |
0f3f1123 | 4 | * "Running tests with kunit_tool" at Documentation/dev-tools/kunit/start.rst |
617f55e2 | 5 | * ./tools/testing/kunit/kunit.py run overflow [--raw_output] |
455a35a6 RV |
6 | */ |
7 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
8 | ||
83701838 | 9 | #include <kunit/device.h> |
617f55e2 | 10 | #include <kunit/test.h> |
ca90800a | 11 | #include <linux/device.h> |
455a35a6 | 12 | #include <linux/kernel.h> |
ca90800a | 13 | #include <linux/mm.h> |
455a35a6 RV |
14 | #include <linux/module.h> |
15 | #include <linux/overflow.h> | |
ca90800a | 16 | #include <linux/slab.h> |
455a35a6 | 17 | #include <linux/types.h> |
ca90800a | 18 | #include <linux/vmalloc.h> |
455a35a6 | 19 | |
72c3ebea KC |
20 | #define SKIP(cond, reason) do { \ |
21 | if (cond) { \ | |
22 | kunit_skip(test, reason); \ | |
23 | return; \ | |
24 | } \ | |
25 | } while (0) | |
26 | ||
27 | /* | |
28 | * Clang 11 and earlier generate unwanted libcalls for signed output | |
29 | * on unsigned input. | |
30 | */ | |
31 | #if defined(CONFIG_CC_IS_CLANG) && __clang_major__ <= 11 | |
32 | # define SKIP_SIGN_MISMATCH(t) SKIP(t, "Clang 11 unwanted libcalls") | |
33 | #else | |
34 | # define SKIP_SIGN_MISMATCH(t) do { } while (0) | |
35 | #endif | |
36 | ||
37 | /* | |
38 | * Clang 13 and earlier generate unwanted libcalls for 64-bit tests on | |
39 | * 32-bit hosts. | |
40 | */ | |
41 | #if defined(CONFIG_CC_IS_CLANG) && __clang_major__ <= 13 && \ | |
42 | BITS_PER_LONG != 64 | |
43 | # define SKIP_64_ON_32(t) SKIP(t, "Clang 13 unwanted libcalls") | |
44 | #else | |
45 | # define SKIP_64_ON_32(t) do { } while (0) | |
46 | #endif | |
47 | ||
d219d2a9 KC |
48 | #define DEFINE_TEST_ARRAY_TYPED(t1, t2, t) \ |
49 | static const struct test_ ## t1 ## _ ## t2 ## __ ## t { \ | |
50 | t1 a; \ | |
51 | t2 b; \ | |
52 | t sum, diff, prod; \ | |
53 | bool s_of, d_of, p_of; \ | |
54 | } t1 ## _ ## t2 ## __ ## t ## _tests[] | |
55 | ||
56 | #define DEFINE_TEST_ARRAY(t) DEFINE_TEST_ARRAY_TYPED(t, t, t) | |
455a35a6 RV |
57 | |
58 | DEFINE_TEST_ARRAY(u8) = { | |
59 | {0, 0, 0, 0, 0, false, false, false}, | |
60 | {1, 1, 2, 0, 1, false, false, false}, | |
61 | {0, 1, 1, U8_MAX, 0, false, true, false}, | |
62 | {1, 0, 1, 1, 0, false, false, false}, | |
63 | {0, U8_MAX, U8_MAX, 1, 0, false, true, false}, | |
64 | {U8_MAX, 0, U8_MAX, U8_MAX, 0, false, false, false}, | |
65 | {1, U8_MAX, 0, 2, U8_MAX, true, true, false}, | |
66 | {U8_MAX, 1, 0, U8_MAX-1, U8_MAX, true, false, false}, | |
67 | {U8_MAX, U8_MAX, U8_MAX-1, 0, 1, true, false, true}, | |
68 | ||
69 | {U8_MAX, U8_MAX-1, U8_MAX-2, 1, 2, true, false, true}, | |
70 | {U8_MAX-1, U8_MAX, U8_MAX-2, U8_MAX, 2, true, true, true}, | |
71 | ||
72 | {1U << 3, 1U << 3, 1U << 4, 0, 1U << 6, false, false, false}, | |
73 | {1U << 4, 1U << 4, 1U << 5, 0, 0, false, false, true}, | |
74 | {1U << 4, 1U << 3, 3*(1U << 3), 1U << 3, 1U << 7, false, false, false}, | |
75 | {1U << 7, 1U << 7, 0, 0, 0, true, false, true}, | |
76 | ||
77 | {48, 32, 80, 16, 0, false, false, true}, | |
78 | {128, 128, 0, 0, 0, true, false, true}, | |
79 | {123, 234, 101, 145, 110, true, true, true}, | |
80 | }; | |
81 | DEFINE_TEST_ARRAY(u16) = { | |
82 | {0, 0, 0, 0, 0, false, false, false}, | |
83 | {1, 1, 2, 0, 1, false, false, false}, | |
84 | {0, 1, 1, U16_MAX, 0, false, true, false}, | |
85 | {1, 0, 1, 1, 0, false, false, false}, | |
86 | {0, U16_MAX, U16_MAX, 1, 0, false, true, false}, | |
87 | {U16_MAX, 0, U16_MAX, U16_MAX, 0, false, false, false}, | |
88 | {1, U16_MAX, 0, 2, U16_MAX, true, true, false}, | |
89 | {U16_MAX, 1, 0, U16_MAX-1, U16_MAX, true, false, false}, | |
90 | {U16_MAX, U16_MAX, U16_MAX-1, 0, 1, true, false, true}, | |
91 | ||
92 | {U16_MAX, U16_MAX-1, U16_MAX-2, 1, 2, true, false, true}, | |
93 | {U16_MAX-1, U16_MAX, U16_MAX-2, U16_MAX, 2, true, true, true}, | |
94 | ||
95 | {1U << 7, 1U << 7, 1U << 8, 0, 1U << 14, false, false, false}, | |
96 | {1U << 8, 1U << 8, 1U << 9, 0, 0, false, false, true}, | |
97 | {1U << 8, 1U << 7, 3*(1U << 7), 1U << 7, 1U << 15, false, false, false}, | |
98 | {1U << 15, 1U << 15, 0, 0, 0, true, false, true}, | |
99 | ||
100 | {123, 234, 357, 65425, 28782, false, true, false}, | |
101 | {1234, 2345, 3579, 64425, 10146, false, true, true}, | |
102 | }; | |
103 | DEFINE_TEST_ARRAY(u32) = { | |
104 | {0, 0, 0, 0, 0, false, false, false}, | |
105 | {1, 1, 2, 0, 1, false, false, false}, | |
106 | {0, 1, 1, U32_MAX, 0, false, true, false}, | |
107 | {1, 0, 1, 1, 0, false, false, false}, | |
108 | {0, U32_MAX, U32_MAX, 1, 0, false, true, false}, | |
109 | {U32_MAX, 0, U32_MAX, U32_MAX, 0, false, false, false}, | |
110 | {1, U32_MAX, 0, 2, U32_MAX, true, true, false}, | |
111 | {U32_MAX, 1, 0, U32_MAX-1, U32_MAX, true, false, false}, | |
112 | {U32_MAX, U32_MAX, U32_MAX-1, 0, 1, true, false, true}, | |
113 | ||
114 | {U32_MAX, U32_MAX-1, U32_MAX-2, 1, 2, true, false, true}, | |
115 | {U32_MAX-1, U32_MAX, U32_MAX-2, U32_MAX, 2, true, true, true}, | |
116 | ||
117 | {1U << 15, 1U << 15, 1U << 16, 0, 1U << 30, false, false, false}, | |
118 | {1U << 16, 1U << 16, 1U << 17, 0, 0, false, false, true}, | |
119 | {1U << 16, 1U << 15, 3*(1U << 15), 1U << 15, 1U << 31, false, false, false}, | |
120 | {1U << 31, 1U << 31, 0, 0, 0, true, false, true}, | |
121 | ||
122 | {-2U, 1U, -1U, -3U, -2U, false, false, false}, | |
123 | {-4U, 5U, 1U, -9U, -20U, true, false, true}, | |
124 | }; | |
125 | ||
126 | DEFINE_TEST_ARRAY(u64) = { | |
127 | {0, 0, 0, 0, 0, false, false, false}, | |
128 | {1, 1, 2, 0, 1, false, false, false}, | |
129 | {0, 1, 1, U64_MAX, 0, false, true, false}, | |
130 | {1, 0, 1, 1, 0, false, false, false}, | |
131 | {0, U64_MAX, U64_MAX, 1, 0, false, true, false}, | |
132 | {U64_MAX, 0, U64_MAX, U64_MAX, 0, false, false, false}, | |
133 | {1, U64_MAX, 0, 2, U64_MAX, true, true, false}, | |
134 | {U64_MAX, 1, 0, U64_MAX-1, U64_MAX, true, false, false}, | |
135 | {U64_MAX, U64_MAX, U64_MAX-1, 0, 1, true, false, true}, | |
136 | ||
137 | {U64_MAX, U64_MAX-1, U64_MAX-2, 1, 2, true, false, true}, | |
138 | {U64_MAX-1, U64_MAX, U64_MAX-2, U64_MAX, 2, true, true, true}, | |
139 | ||
140 | {1ULL << 31, 1ULL << 31, 1ULL << 32, 0, 1ULL << 62, false, false, false}, | |
141 | {1ULL << 32, 1ULL << 32, 1ULL << 33, 0, 0, false, false, true}, | |
142 | {1ULL << 32, 1ULL << 31, 3*(1ULL << 31), 1ULL << 31, 1ULL << 63, false, false, false}, | |
143 | {1ULL << 63, 1ULL << 63, 0, 0, 0, true, false, true}, | |
144 | {1000000000ULL /* 10^9 */, 10000000000ULL /* 10^10 */, | |
145 | 11000000000ULL, 18446744064709551616ULL, 10000000000000000000ULL, | |
146 | false, true, false}, | |
147 | {-15ULL, 10ULL, -5ULL, -25ULL, -150ULL, false, false, true}, | |
148 | }; | |
149 | ||
150 | DEFINE_TEST_ARRAY(s8) = { | |
151 | {0, 0, 0, 0, 0, false, false, false}, | |
152 | ||
153 | {0, S8_MAX, S8_MAX, -S8_MAX, 0, false, false, false}, | |
154 | {S8_MAX, 0, S8_MAX, S8_MAX, 0, false, false, false}, | |
155 | {0, S8_MIN, S8_MIN, S8_MIN, 0, false, true, false}, | |
156 | {S8_MIN, 0, S8_MIN, S8_MIN, 0, false, false, false}, | |
157 | ||
158 | {-1, S8_MIN, S8_MAX, S8_MAX, S8_MIN, true, false, true}, | |
159 | {S8_MIN, -1, S8_MAX, -S8_MAX, S8_MIN, true, false, true}, | |
160 | {-1, S8_MAX, S8_MAX-1, S8_MIN, -S8_MAX, false, false, false}, | |
161 | {S8_MAX, -1, S8_MAX-1, S8_MIN, -S8_MAX, false, true, false}, | |
162 | {-1, -S8_MAX, S8_MIN, S8_MAX-1, S8_MAX, false, false, false}, | |
163 | {-S8_MAX, -1, S8_MIN, S8_MIN+2, S8_MAX, false, false, false}, | |
164 | ||
165 | {1, S8_MIN, -S8_MAX, -S8_MAX, S8_MIN, false, true, false}, | |
166 | {S8_MIN, 1, -S8_MAX, S8_MAX, S8_MIN, false, true, false}, | |
167 | {1, S8_MAX, S8_MIN, S8_MIN+2, S8_MAX, true, false, false}, | |
168 | {S8_MAX, 1, S8_MIN, S8_MAX-1, S8_MAX, true, false, false}, | |
169 | ||
170 | {S8_MIN, S8_MIN, 0, 0, 0, true, false, true}, | |
171 | {S8_MAX, S8_MAX, -2, 0, 1, true, false, true}, | |
172 | ||
173 | {-4, -32, -36, 28, -128, false, false, true}, | |
174 | {-4, 32, 28, -36, -128, false, false, false}, | |
175 | }; | |
176 | ||
177 | DEFINE_TEST_ARRAY(s16) = { | |
178 | {0, 0, 0, 0, 0, false, false, false}, | |
179 | ||
180 | {0, S16_MAX, S16_MAX, -S16_MAX, 0, false, false, false}, | |
181 | {S16_MAX, 0, S16_MAX, S16_MAX, 0, false, false, false}, | |
182 | {0, S16_MIN, S16_MIN, S16_MIN, 0, false, true, false}, | |
183 | {S16_MIN, 0, S16_MIN, S16_MIN, 0, false, false, false}, | |
184 | ||
185 | {-1, S16_MIN, S16_MAX, S16_MAX, S16_MIN, true, false, true}, | |
186 | {S16_MIN, -1, S16_MAX, -S16_MAX, S16_MIN, true, false, true}, | |
187 | {-1, S16_MAX, S16_MAX-1, S16_MIN, -S16_MAX, false, false, false}, | |
188 | {S16_MAX, -1, S16_MAX-1, S16_MIN, -S16_MAX, false, true, false}, | |
189 | {-1, -S16_MAX, S16_MIN, S16_MAX-1, S16_MAX, false, false, false}, | |
190 | {-S16_MAX, -1, S16_MIN, S16_MIN+2, S16_MAX, false, false, false}, | |
191 | ||
192 | {1, S16_MIN, -S16_MAX, -S16_MAX, S16_MIN, false, true, false}, | |
193 | {S16_MIN, 1, -S16_MAX, S16_MAX, S16_MIN, false, true, false}, | |
194 | {1, S16_MAX, S16_MIN, S16_MIN+2, S16_MAX, true, false, false}, | |
195 | {S16_MAX, 1, S16_MIN, S16_MAX-1, S16_MAX, true, false, false}, | |
196 | ||
197 | {S16_MIN, S16_MIN, 0, 0, 0, true, false, true}, | |
198 | {S16_MAX, S16_MAX, -2, 0, 1, true, false, true}, | |
199 | }; | |
200 | DEFINE_TEST_ARRAY(s32) = { | |
201 | {0, 0, 0, 0, 0, false, false, false}, | |
202 | ||
203 | {0, S32_MAX, S32_MAX, -S32_MAX, 0, false, false, false}, | |
204 | {S32_MAX, 0, S32_MAX, S32_MAX, 0, false, false, false}, | |
205 | {0, S32_MIN, S32_MIN, S32_MIN, 0, false, true, false}, | |
206 | {S32_MIN, 0, S32_MIN, S32_MIN, 0, false, false, false}, | |
207 | ||
208 | {-1, S32_MIN, S32_MAX, S32_MAX, S32_MIN, true, false, true}, | |
209 | {S32_MIN, -1, S32_MAX, -S32_MAX, S32_MIN, true, false, true}, | |
210 | {-1, S32_MAX, S32_MAX-1, S32_MIN, -S32_MAX, false, false, false}, | |
211 | {S32_MAX, -1, S32_MAX-1, S32_MIN, -S32_MAX, false, true, false}, | |
212 | {-1, -S32_MAX, S32_MIN, S32_MAX-1, S32_MAX, false, false, false}, | |
213 | {-S32_MAX, -1, S32_MIN, S32_MIN+2, S32_MAX, false, false, false}, | |
214 | ||
215 | {1, S32_MIN, -S32_MAX, -S32_MAX, S32_MIN, false, true, false}, | |
216 | {S32_MIN, 1, -S32_MAX, S32_MAX, S32_MIN, false, true, false}, | |
217 | {1, S32_MAX, S32_MIN, S32_MIN+2, S32_MAX, true, false, false}, | |
218 | {S32_MAX, 1, S32_MIN, S32_MAX-1, S32_MAX, true, false, false}, | |
219 | ||
220 | {S32_MIN, S32_MIN, 0, 0, 0, true, false, true}, | |
221 | {S32_MAX, S32_MAX, -2, 0, 1, true, false, true}, | |
222 | }; | |
6a022dd2 | 223 | |
455a35a6 RV |
224 | DEFINE_TEST_ARRAY(s64) = { |
225 | {0, 0, 0, 0, 0, false, false, false}, | |
226 | ||
227 | {0, S64_MAX, S64_MAX, -S64_MAX, 0, false, false, false}, | |
228 | {S64_MAX, 0, S64_MAX, S64_MAX, 0, false, false, false}, | |
229 | {0, S64_MIN, S64_MIN, S64_MIN, 0, false, true, false}, | |
230 | {S64_MIN, 0, S64_MIN, S64_MIN, 0, false, false, false}, | |
231 | ||
232 | {-1, S64_MIN, S64_MAX, S64_MAX, S64_MIN, true, false, true}, | |
233 | {S64_MIN, -1, S64_MAX, -S64_MAX, S64_MIN, true, false, true}, | |
234 | {-1, S64_MAX, S64_MAX-1, S64_MIN, -S64_MAX, false, false, false}, | |
235 | {S64_MAX, -1, S64_MAX-1, S64_MIN, -S64_MAX, false, true, false}, | |
236 | {-1, -S64_MAX, S64_MIN, S64_MAX-1, S64_MAX, false, false, false}, | |
237 | {-S64_MAX, -1, S64_MIN, S64_MIN+2, S64_MAX, false, false, false}, | |
238 | ||
239 | {1, S64_MIN, -S64_MAX, -S64_MAX, S64_MIN, false, true, false}, | |
240 | {S64_MIN, 1, -S64_MAX, S64_MAX, S64_MIN, false, true, false}, | |
241 | {1, S64_MAX, S64_MIN, S64_MIN+2, S64_MAX, true, false, false}, | |
242 | {S64_MAX, 1, S64_MIN, S64_MAX-1, S64_MAX, true, false, false}, | |
243 | ||
244 | {S64_MIN, S64_MIN, 0, 0, 0, true, false, true}, | |
245 | {S64_MAX, S64_MAX, -2, 0, 1, true, false, true}, | |
246 | ||
247 | {-1, -1, -2, 0, 1, false, false, false}, | |
248 | {-1, -128, -129, 127, 128, false, false, false}, | |
249 | {-128, -1, -129, -127, 128, false, false, false}, | |
250 | {0, -S64_MAX, -S64_MAX, S64_MAX, 0, false, false, false}, | |
251 | }; | |
252 | ||
d219d2a9 KC |
253 | #define check_one_op(t, fmt, op, sym, a, b, r, of) do { \ |
254 | int _a_orig = a, _a_bump = a + 1; \ | |
255 | int _b_orig = b, _b_bump = b + 1; \ | |
256 | bool _of; \ | |
257 | t _r; \ | |
258 | \ | |
259 | _of = check_ ## op ## _overflow(a, b, &_r); \ | |
260 | KUNIT_EXPECT_EQ_MSG(test, _of, of, \ | |
617f55e2 | 261 | "expected "fmt" "sym" "fmt" to%s overflow (type %s)\n", \ |
d219d2a9 KC |
262 | a, b, of ? "" : " not", #t); \ |
263 | KUNIT_EXPECT_EQ_MSG(test, _r, r, \ | |
617f55e2 | 264 | "expected "fmt" "sym" "fmt" == "fmt", got "fmt" (type %s)\n", \ |
d219d2a9 KC |
265 | a, b, r, _r, #t); \ |
266 | /* Check for internal macro side-effects. */ \ | |
267 | _of = check_ ## op ## _overflow(_a_orig++, _b_orig++, &_r); \ | |
268 | KUNIT_EXPECT_EQ_MSG(test, _a_orig, _a_bump, "Unexpected " #op " macro side-effect!\n"); \ | |
269 | KUNIT_EXPECT_EQ_MSG(test, _b_orig, _b_bump, "Unexpected " #op " macro side-effect!\n"); \ | |
6d334432 RV |
270 | } while (0) |
271 | ||
d219d2a9 KC |
272 | #define DEFINE_TEST_FUNC_TYPED(n, t, fmt) \ |
273 | static void do_test_ ## n(struct kunit *test, const struct test_ ## n *p) \ | |
72c3ebea | 274 | { \ |
6d334432 RV |
275 | check_one_op(t, fmt, add, "+", p->a, p->b, p->sum, p->s_of); \ |
276 | check_one_op(t, fmt, add, "+", p->b, p->a, p->sum, p->s_of); \ | |
277 | check_one_op(t, fmt, sub, "-", p->a, p->b, p->diff, p->d_of); \ | |
278 | check_one_op(t, fmt, mul, "*", p->a, p->b, p->prod, p->p_of); \ | |
279 | check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \ | |
455a35a6 RV |
280 | } \ |
281 | \ | |
d219d2a9 | 282 | static void n ## _overflow_test(struct kunit *test) { \ |
455a35a6 RV |
283 | unsigned i; \ |
284 | \ | |
72c3ebea KC |
285 | SKIP_64_ON_32(__same_type(t, u64)); \ |
286 | SKIP_64_ON_32(__same_type(t, s64)); \ | |
287 | SKIP_SIGN_MISMATCH(__same_type(n ## _tests[0].a, u32) && \ | |
288 | __same_type(n ## _tests[0].b, u32) && \ | |
289 | __same_type(n ## _tests[0].sum, int)); \ | |
290 | \ | |
d219d2a9 KC |
291 | for (i = 0; i < ARRAY_SIZE(n ## _tests); ++i) \ |
292 | do_test_ ## n(test, &n ## _tests[i]); \ | |
617f55e2 | 293 | kunit_info(test, "%zu %s arithmetic tests finished\n", \ |
d219d2a9 | 294 | ARRAY_SIZE(n ## _tests), #n); \ |
455a35a6 RV |
295 | } |
296 | ||
d219d2a9 KC |
297 | #define DEFINE_TEST_FUNC(t, fmt) \ |
298 | DEFINE_TEST_FUNC_TYPED(t ## _ ## t ## __ ## t, t, fmt) | |
299 | ||
455a35a6 RV |
300 | DEFINE_TEST_FUNC(u8, "%d"); |
301 | DEFINE_TEST_FUNC(s8, "%d"); | |
302 | DEFINE_TEST_FUNC(u16, "%d"); | |
303 | DEFINE_TEST_FUNC(s16, "%d"); | |
304 | DEFINE_TEST_FUNC(u32, "%u"); | |
305 | DEFINE_TEST_FUNC(s32, "%d"); | |
455a35a6 RV |
306 | DEFINE_TEST_FUNC(u64, "%llu"); |
307 | DEFINE_TEST_FUNC(s64, "%lld"); | |
455a35a6 | 308 | |
d219d2a9 KC |
309 | DEFINE_TEST_ARRAY_TYPED(u32, u32, u8) = { |
310 | {0, 0, 0, 0, 0, false, false, false}, | |
311 | {U8_MAX, 2, 1, U8_MAX - 2, U8_MAX - 1, true, false, true}, | |
312 | {U8_MAX + 1, 0, 0, 0, 0, true, true, false}, | |
313 | }; | |
314 | DEFINE_TEST_FUNC_TYPED(u32_u32__u8, u8, "%d"); | |
315 | ||
316 | DEFINE_TEST_ARRAY_TYPED(u32, u32, int) = { | |
317 | {0, 0, 0, 0, 0, false, false, false}, | |
318 | {U32_MAX, 0, -1, -1, 0, true, true, false}, | |
319 | }; | |
320 | DEFINE_TEST_FUNC_TYPED(u32_u32__int, int, "%d"); | |
321 | ||
322 | DEFINE_TEST_ARRAY_TYPED(u8, u8, int) = { | |
323 | {0, 0, 0, 0, 0, false, false, false}, | |
324 | {U8_MAX, U8_MAX, 2 * U8_MAX, 0, U8_MAX * U8_MAX, false, false, false}, | |
325 | {1, 2, 3, -1, 2, false, false, false}, | |
326 | }; | |
327 | DEFINE_TEST_FUNC_TYPED(u8_u8__int, int, "%d"); | |
328 | ||
329 | DEFINE_TEST_ARRAY_TYPED(int, int, u8) = { | |
330 | {0, 0, 0, 0, 0, false, false, false}, | |
331 | {1, 2, 3, U8_MAX, 2, false, true, false}, | |
332 | {-1, 0, U8_MAX, U8_MAX, 0, true, true, false}, | |
333 | }; | |
334 | DEFINE_TEST_FUNC_TYPED(int_int__u8, u8, "%d"); | |
335 | ||
d36b6ad2 | 336 | /* Args are: value, shift, type, expected result, overflow expected */ |
617f55e2 | 337 | #define TEST_ONE_SHIFT(a, s, t, expect, of) do { \ |
d36b6ad2 KC |
338 | typeof(a) __a = (a); \ |
339 | typeof(s) __s = (s); \ | |
340 | t __e = (expect); \ | |
341 | t __d; \ | |
342 | bool __of = check_shl_overflow(__a, __s, &__d); \ | |
343 | if (__of != of) { \ | |
617f55e2 KC |
344 | KUNIT_EXPECT_EQ_MSG(test, __of, of, \ |
345 | "expected (%s)(%s << %s) to%s overflow\n", \ | |
d36b6ad2 | 346 | #t, #a, #s, of ? "" : " not"); \ |
d36b6ad2 | 347 | } else if (!__of && __d != __e) { \ |
617f55e2 KC |
348 | KUNIT_EXPECT_EQ_MSG(test, __d, __e, \ |
349 | "expected (%s)(%s << %s) == %s\n", \ | |
d36b6ad2 KC |
350 | #t, #a, #s, #expect); \ |
351 | if ((t)-1 < 0) \ | |
617f55e2 | 352 | kunit_info(test, "got %lld\n", (s64)__d); \ |
d36b6ad2 | 353 | else \ |
617f55e2 | 354 | kunit_info(test, "got %llu\n", (u64)__d); \ |
d36b6ad2 | 355 | } \ |
8e7c8ca6 | 356 | count++; \ |
617f55e2 | 357 | } while (0) |
d36b6ad2 | 358 | |
77974225 KC |
359 | static void shift_sane_test(struct kunit *test) |
360 | { | |
361 | int count = 0; | |
362 | ||
d36b6ad2 | 363 | /* Sane shifts. */ |
617f55e2 KC |
364 | TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false); |
365 | TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false); | |
366 | TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false); | |
367 | TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false); | |
368 | TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false); | |
369 | TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false); | |
370 | TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false); | |
371 | TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false); | |
372 | TEST_ONE_SHIFT(1, 0, int, 1 << 0, false); | |
373 | TEST_ONE_SHIFT(1, 16, int, 1 << 16, false); | |
374 | TEST_ONE_SHIFT(1, 30, int, 1 << 30, false); | |
375 | TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false); | |
376 | TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false); | |
377 | TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false); | |
378 | TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false); | |
379 | TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false); | |
380 | TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false); | |
381 | TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false); | |
382 | TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false); | |
383 | TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false); | |
384 | TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false); | |
385 | TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false); | |
386 | TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false); | |
387 | TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false); | |
388 | TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false); | |
389 | TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64, 0xFFFFFFFFULL << 32, false); | |
d36b6ad2 KC |
390 | |
391 | /* Sane shift: start and end with 0, without a too-wide shift. */ | |
617f55e2 KC |
392 | TEST_ONE_SHIFT(0, 7, u8, 0, false); |
393 | TEST_ONE_SHIFT(0, 15, u16, 0, false); | |
394 | TEST_ONE_SHIFT(0, 31, unsigned int, 0, false); | |
395 | TEST_ONE_SHIFT(0, 31, u32, 0, false); | |
396 | TEST_ONE_SHIFT(0, 63, u64, 0, false); | |
d36b6ad2 KC |
397 | |
398 | /* Sane shift: start and end with 0, without reaching signed bit. */ | |
617f55e2 KC |
399 | TEST_ONE_SHIFT(0, 6, s8, 0, false); |
400 | TEST_ONE_SHIFT(0, 14, s16, 0, false); | |
401 | TEST_ONE_SHIFT(0, 30, int, 0, false); | |
402 | TEST_ONE_SHIFT(0, 30, s32, 0, false); | |
403 | TEST_ONE_SHIFT(0, 62, s64, 0, false); | |
d36b6ad2 | 404 | |
77974225 KC |
405 | kunit_info(test, "%d sane shift tests finished\n", count); |
406 | } | |
407 | ||
408 | static void shift_overflow_test(struct kunit *test) | |
409 | { | |
410 | int count = 0; | |
411 | ||
d36b6ad2 | 412 | /* Overflow: shifted the bit off the end. */ |
617f55e2 KC |
413 | TEST_ONE_SHIFT(1, 8, u8, 0, true); |
414 | TEST_ONE_SHIFT(1, 16, u16, 0, true); | |
415 | TEST_ONE_SHIFT(1, 32, unsigned int, 0, true); | |
416 | TEST_ONE_SHIFT(1, 32, u32, 0, true); | |
417 | TEST_ONE_SHIFT(1, 64, u64, 0, true); | |
d36b6ad2 KC |
418 | |
419 | /* Overflow: shifted into the signed bit. */ | |
617f55e2 KC |
420 | TEST_ONE_SHIFT(1, 7, s8, 0, true); |
421 | TEST_ONE_SHIFT(1, 15, s16, 0, true); | |
422 | TEST_ONE_SHIFT(1, 31, int, 0, true); | |
423 | TEST_ONE_SHIFT(1, 31, s32, 0, true); | |
424 | TEST_ONE_SHIFT(1, 63, s64, 0, true); | |
d36b6ad2 KC |
425 | |
426 | /* Overflow: high bit falls off unsigned types. */ | |
427 | /* 10010110 */ | |
617f55e2 | 428 | TEST_ONE_SHIFT(150, 1, u8, 0, true); |
d36b6ad2 | 429 | /* 1000100010010110 */ |
617f55e2 | 430 | TEST_ONE_SHIFT(34966, 1, u16, 0, true); |
d36b6ad2 | 431 | /* 10000100000010001000100010010110 */ |
617f55e2 KC |
432 | TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true); |
433 | TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true); | |
d36b6ad2 | 434 | /* 1000001000010000010000000100000010000100000010001000100010010110 */ |
617f55e2 | 435 | TEST_ONE_SHIFT(9372061470395238550ULL, 1, u64, 0, true); |
d36b6ad2 KC |
436 | |
437 | /* Overflow: bit shifted into signed bit on signed types. */ | |
438 | /* 01001011 */ | |
617f55e2 | 439 | TEST_ONE_SHIFT(75, 1, s8, 0, true); |
d36b6ad2 | 440 | /* 0100010001001011 */ |
617f55e2 | 441 | TEST_ONE_SHIFT(17483, 1, s16, 0, true); |
d36b6ad2 | 442 | /* 01000010000001000100010001001011 */ |
617f55e2 KC |
443 | TEST_ONE_SHIFT(1107575883, 1, s32, 0, true); |
444 | TEST_ONE_SHIFT(1107575883, 1, int, 0, true); | |
d36b6ad2 | 445 | /* 0100000100001000001000000010000001000010000001000100010001001011 */ |
617f55e2 | 446 | TEST_ONE_SHIFT(4686030735197619275LL, 1, s64, 0, true); |
d36b6ad2 KC |
447 | |
448 | /* Overflow: bit shifted past signed bit on signed types. */ | |
449 | /* 01001011 */ | |
617f55e2 | 450 | TEST_ONE_SHIFT(75, 2, s8, 0, true); |
d36b6ad2 | 451 | /* 0100010001001011 */ |
617f55e2 | 452 | TEST_ONE_SHIFT(17483, 2, s16, 0, true); |
d36b6ad2 | 453 | /* 01000010000001000100010001001011 */ |
617f55e2 KC |
454 | TEST_ONE_SHIFT(1107575883, 2, s32, 0, true); |
455 | TEST_ONE_SHIFT(1107575883, 2, int, 0, true); | |
d36b6ad2 | 456 | /* 0100000100001000001000000010000001000010000001000100010001001011 */ |
617f55e2 | 457 | TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true); |
d36b6ad2 | 458 | |
77974225 KC |
459 | kunit_info(test, "%d overflow shift tests finished\n", count); |
460 | } | |
461 | ||
462 | static void shift_truncate_test(struct kunit *test) | |
463 | { | |
464 | int count = 0; | |
465 | ||
d36b6ad2 | 466 | /* Overflow: values larger than destination type. */ |
617f55e2 KC |
467 | TEST_ONE_SHIFT(0x100, 0, u8, 0, true); |
468 | TEST_ONE_SHIFT(0xFF, 0, s8, 0, true); | |
469 | TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true); | |
470 | TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true); | |
471 | TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true); | |
472 | TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true); | |
473 | TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true); | |
474 | TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true); | |
475 | TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true); | |
d36b6ad2 | 476 | |
77974225 KC |
477 | /* Overflow: shifted at or beyond entire type's bit width. */ |
478 | TEST_ONE_SHIFT(0, 8, u8, 0, true); | |
479 | TEST_ONE_SHIFT(0, 9, u8, 0, true); | |
480 | TEST_ONE_SHIFT(0, 8, s8, 0, true); | |
481 | TEST_ONE_SHIFT(0, 9, s8, 0, true); | |
482 | TEST_ONE_SHIFT(0, 16, u16, 0, true); | |
483 | TEST_ONE_SHIFT(0, 17, u16, 0, true); | |
484 | TEST_ONE_SHIFT(0, 16, s16, 0, true); | |
485 | TEST_ONE_SHIFT(0, 17, s16, 0, true); | |
486 | TEST_ONE_SHIFT(0, 32, u32, 0, true); | |
487 | TEST_ONE_SHIFT(0, 33, u32, 0, true); | |
488 | TEST_ONE_SHIFT(0, 32, int, 0, true); | |
489 | TEST_ONE_SHIFT(0, 33, int, 0, true); | |
490 | TEST_ONE_SHIFT(0, 32, s32, 0, true); | |
491 | TEST_ONE_SHIFT(0, 33, s32, 0, true); | |
492 | TEST_ONE_SHIFT(0, 64, u64, 0, true); | |
493 | TEST_ONE_SHIFT(0, 65, u64, 0, true); | |
494 | TEST_ONE_SHIFT(0, 64, s64, 0, true); | |
495 | TEST_ONE_SHIFT(0, 65, s64, 0, true); | |
496 | ||
497 | kunit_info(test, "%d truncate shift tests finished\n", count); | |
498 | } | |
499 | ||
500 | static void shift_nonsense_test(struct kunit *test) | |
501 | { | |
502 | int count = 0; | |
503 | ||
d36b6ad2 | 504 | /* Nonsense: negative initial value. */ |
617f55e2 KC |
505 | TEST_ONE_SHIFT(-1, 0, s8, 0, true); |
506 | TEST_ONE_SHIFT(-1, 0, u8, 0, true); | |
507 | TEST_ONE_SHIFT(-5, 0, s16, 0, true); | |
508 | TEST_ONE_SHIFT(-5, 0, u16, 0, true); | |
509 | TEST_ONE_SHIFT(-10, 0, int, 0, true); | |
510 | TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true); | |
511 | TEST_ONE_SHIFT(-100, 0, s32, 0, true); | |
512 | TEST_ONE_SHIFT(-100, 0, u32, 0, true); | |
513 | TEST_ONE_SHIFT(-10000, 0, s64, 0, true); | |
514 | TEST_ONE_SHIFT(-10000, 0, u64, 0, true); | |
d36b6ad2 KC |
515 | |
516 | /* Nonsense: negative shift values. */ | |
617f55e2 KC |
517 | TEST_ONE_SHIFT(0, -5, s8, 0, true); |
518 | TEST_ONE_SHIFT(0, -5, u8, 0, true); | |
519 | TEST_ONE_SHIFT(0, -10, s16, 0, true); | |
520 | TEST_ONE_SHIFT(0, -10, u16, 0, true); | |
521 | TEST_ONE_SHIFT(0, -15, int, 0, true); | |
522 | TEST_ONE_SHIFT(0, -15, unsigned int, 0, true); | |
523 | TEST_ONE_SHIFT(0, -20, s32, 0, true); | |
524 | TEST_ONE_SHIFT(0, -20, u32, 0, true); | |
525 | TEST_ONE_SHIFT(0, -30, s64, 0, true); | |
526 | TEST_ONE_SHIFT(0, -30, u64, 0, true); | |
d36b6ad2 | 527 | |
d36b6ad2 KC |
528 | /* |
529 | * Corner case: for unsigned types, we fail when we've shifted | |
530 | * through the entire width of bits. For signed types, we might | |
531 | * want to match this behavior, but that would mean noticing if | |
532 | * we shift through all but the signed bit, and this is not | |
533 | * currently detected (but we'll notice an overflow into the | |
534 | * signed bit). So, for now, we will test this condition but | |
535 | * mark it as not expected to overflow. | |
536 | */ | |
617f55e2 KC |
537 | TEST_ONE_SHIFT(0, 7, s8, 0, false); |
538 | TEST_ONE_SHIFT(0, 15, s16, 0, false); | |
539 | TEST_ONE_SHIFT(0, 31, int, 0, false); | |
540 | TEST_ONE_SHIFT(0, 31, s32, 0, false); | |
541 | TEST_ONE_SHIFT(0, 63, s64, 0, false); | |
8e7c8ca6 | 542 | |
77974225 | 543 | kunit_info(test, "%d nonsense shift tests finished\n", count); |
d36b6ad2 | 544 | } |
77974225 | 545 | #undef TEST_ONE_SHIFT |
d36b6ad2 | 546 | |
ca90800a KC |
547 | /* |
548 | * Deal with the various forms of allocator arguments. See comments above | |
549 | * the DEFINE_TEST_ALLOC() instances for mapping of the "bits". | |
550 | */ | |
8e060c21 KC |
551 | #define alloc_GFP (GFP_KERNEL | __GFP_NOWARN) |
552 | #define alloc010(alloc, arg, sz) alloc(sz, alloc_GFP) | |
553 | #define alloc011(alloc, arg, sz) alloc(sz, alloc_GFP, NUMA_NO_NODE) | |
ca90800a KC |
554 | #define alloc000(alloc, arg, sz) alloc(sz) |
555 | #define alloc001(alloc, arg, sz) alloc(sz, NUMA_NO_NODE) | |
8e060c21 | 556 | #define alloc110(alloc, arg, sz) alloc(arg, sz, alloc_GFP) |
ca90800a KC |
557 | #define free0(free, arg, ptr) free(ptr) |
558 | #define free1(free, arg, ptr) free(arg, ptr) | |
559 | ||
8e060c21 KC |
560 | /* Wrap around to 16K */ |
561 | #define TEST_SIZE (5 * 4096) | |
ca90800a KC |
562 | |
563 | #define DEFINE_TEST_ALLOC(func, free_func, want_arg, want_gfp, want_node)\ | |
617f55e2 | 564 | static void test_ ## func (struct kunit *test, void *arg) \ |
ca90800a KC |
565 | { \ |
566 | volatile size_t a = TEST_SIZE; \ | |
567 | volatile size_t b = (SIZE_MAX / TEST_SIZE) + 1; \ | |
568 | void *ptr; \ | |
569 | \ | |
570 | /* Tiny allocation test. */ \ | |
571 | ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, 1);\ | |
617f55e2 KC |
572 | KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \ |
573 | #func " failed regular allocation?!\n"); \ | |
ca90800a KC |
574 | free ## want_arg (free_func, arg, ptr); \ |
575 | \ | |
576 | /* Wrapped allocation test. */ \ | |
577 | ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ | |
578 | a * b); \ | |
617f55e2 KC |
579 | KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \ |
580 | #func " unexpectedly failed bad wrapping?!\n"); \ | |
ca90800a KC |
581 | free ## want_arg (free_func, arg, ptr); \ |
582 | \ | |
583 | /* Saturated allocation test. */ \ | |
584 | ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ | |
585 | array_size(a, b)); \ | |
586 | if (ptr) { \ | |
617f55e2 | 587 | KUNIT_FAIL(test, #func " missed saturation!\n"); \ |
ca90800a | 588 | free ## want_arg (free_func, arg, ptr); \ |
ca90800a | 589 | } \ |
ca90800a KC |
590 | } |
591 | ||
592 | /* | |
593 | * Allocator uses a trailing node argument --------+ (e.g. kmalloc_node()) | |
594 | * Allocator uses the gfp_t argument -----------+ | (e.g. kmalloc()) | |
595 | * Allocator uses a special leading argument + | | (e.g. devm_kmalloc()) | |
596 | * | | | | |
597 | */ | |
598 | DEFINE_TEST_ALLOC(kmalloc, kfree, 0, 1, 0); | |
599 | DEFINE_TEST_ALLOC(kmalloc_node, kfree, 0, 1, 1); | |
600 | DEFINE_TEST_ALLOC(kzalloc, kfree, 0, 1, 0); | |
601 | DEFINE_TEST_ALLOC(kzalloc_node, kfree, 0, 1, 1); | |
8e7c8ca6 | 602 | DEFINE_TEST_ALLOC(__vmalloc, vfree, 0, 1, 0); |
ca90800a KC |
603 | DEFINE_TEST_ALLOC(kvmalloc, kvfree, 0, 1, 0); |
604 | DEFINE_TEST_ALLOC(kvmalloc_node, kvfree, 0, 1, 1); | |
605 | DEFINE_TEST_ALLOC(kvzalloc, kvfree, 0, 1, 0); | |
606 | DEFINE_TEST_ALLOC(kvzalloc_node, kvfree, 0, 1, 1); | |
607 | DEFINE_TEST_ALLOC(devm_kmalloc, devm_kfree, 1, 1, 0); | |
608 | DEFINE_TEST_ALLOC(devm_kzalloc, devm_kfree, 1, 1, 0); | |
609 | ||
617f55e2 | 610 | static void overflow_allocation_test(struct kunit *test) |
ca90800a KC |
611 | { |
612 | const char device_name[] = "overflow-test"; | |
613 | struct device *dev; | |
8e7c8ca6 | 614 | int count = 0; |
ca90800a | 615 | |
617f55e2 | 616 | #define check_allocation_overflow(alloc) do { \ |
8e7c8ca6 | 617 | count++; \ |
617f55e2 KC |
618 | test_ ## alloc(test, dev); \ |
619 | } while (0) | |
8e7c8ca6 | 620 | |
ca90800a | 621 | /* Create dummy device for devm_kmalloc()-family tests. */ |
83701838 | 622 | dev = kunit_device_register(test, device_name); |
617f55e2 KC |
623 | KUNIT_ASSERT_FALSE_MSG(test, IS_ERR(dev), |
624 | "Cannot register test device\n"); | |
625 | ||
626 | check_allocation_overflow(kmalloc); | |
627 | check_allocation_overflow(kmalloc_node); | |
628 | check_allocation_overflow(kzalloc); | |
629 | check_allocation_overflow(kzalloc_node); | |
630 | check_allocation_overflow(__vmalloc); | |
631 | check_allocation_overflow(kvmalloc); | |
632 | check_allocation_overflow(kvmalloc_node); | |
633 | check_allocation_overflow(kvzalloc); | |
634 | check_allocation_overflow(kvzalloc_node); | |
635 | check_allocation_overflow(devm_kmalloc); | |
636 | check_allocation_overflow(devm_kzalloc); | |
ca90800a | 637 | |
617f55e2 | 638 | kunit_info(test, "%d allocation overflow tests finished\n", count); |
8e7c8ca6 | 639 | #undef check_allocation_overflow |
ca90800a KC |
640 | } |
641 | ||
e1be43d9 KC |
642 | struct __test_flex_array { |
643 | unsigned long flags; | |
644 | size_t count; | |
645 | unsigned long data[]; | |
646 | }; | |
647 | ||
617f55e2 | 648 | static void overflow_size_helpers_test(struct kunit *test) |
e1be43d9 | 649 | { |
230f6fa2 | 650 | /* Make sure struct_size() can be used in a constant expression. */ |
d67790dd | 651 | u8 ce_array[struct_size_t(struct __test_flex_array, data, 55)]; |
e1be43d9 KC |
652 | struct __test_flex_array *obj; |
653 | int count = 0; | |
e1be43d9 | 654 | int var; |
230f6fa2 KC |
655 | volatile int unconst = 0; |
656 | ||
657 | /* Verify constant expression against runtime version. */ | |
658 | var = 55; | |
659 | OPTIMIZER_HIDE_VAR(var); | |
617f55e2 | 660 | KUNIT_EXPECT_EQ(test, sizeof(ce_array), struct_size(obj, data, var)); |
e1be43d9 | 661 | |
617f55e2 KC |
662 | #define check_one_size_helper(expected, func, args...) do { \ |
663 | size_t _r = func(args); \ | |
664 | KUNIT_EXPECT_EQ_MSG(test, _r, expected, \ | |
665 | "expected " #func "(" #args ") to return %zu but got %zu instead\n", \ | |
666 | (size_t)(expected), _r); \ | |
e1be43d9 | 667 | count++; \ |
617f55e2 | 668 | } while (0) |
e1be43d9 KC |
669 | |
670 | var = 4; | |
617f55e2 KC |
671 | check_one_size_helper(20, size_mul, var++, 5); |
672 | check_one_size_helper(20, size_mul, 4, var++); | |
673 | check_one_size_helper(0, size_mul, 0, 3); | |
674 | check_one_size_helper(0, size_mul, 3, 0); | |
675 | check_one_size_helper(6, size_mul, 2, 3); | |
676 | check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 1); | |
677 | check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 3); | |
678 | check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, -3); | |
e1be43d9 KC |
679 | |
680 | var = 4; | |
617f55e2 KC |
681 | check_one_size_helper(9, size_add, var++, 5); |
682 | check_one_size_helper(9, size_add, 4, var++); | |
683 | check_one_size_helper(9, size_add, 9, 0); | |
684 | check_one_size_helper(9, size_add, 0, 9); | |
685 | check_one_size_helper(5, size_add, 2, 3); | |
686 | check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 1); | |
687 | check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 3); | |
688 | check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, -3); | |
e1be43d9 KC |
689 | |
690 | var = 4; | |
617f55e2 KC |
691 | check_one_size_helper(1, size_sub, var--, 3); |
692 | check_one_size_helper(1, size_sub, 4, var--); | |
693 | check_one_size_helper(1, size_sub, 3, 2); | |
694 | check_one_size_helper(9, size_sub, 9, 0); | |
695 | check_one_size_helper(SIZE_MAX, size_sub, 9, -3); | |
696 | check_one_size_helper(SIZE_MAX, size_sub, 0, 9); | |
697 | check_one_size_helper(SIZE_MAX, size_sub, 2, 3); | |
698 | check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 0); | |
699 | check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 10); | |
700 | check_one_size_helper(SIZE_MAX, size_sub, 0, SIZE_MAX); | |
701 | check_one_size_helper(SIZE_MAX, size_sub, 14, SIZE_MAX); | |
702 | check_one_size_helper(SIZE_MAX - 2, size_sub, SIZE_MAX - 1, 1); | |
703 | check_one_size_helper(SIZE_MAX - 4, size_sub, SIZE_MAX - 1, 3); | |
704 | check_one_size_helper(1, size_sub, SIZE_MAX - 1, -3); | |
e1be43d9 KC |
705 | |
706 | var = 4; | |
617f55e2 KC |
707 | check_one_size_helper(4 * sizeof(*obj->data), |
708 | flex_array_size, obj, data, var++); | |
709 | check_one_size_helper(5 * sizeof(*obj->data), | |
710 | flex_array_size, obj, data, var++); | |
711 | check_one_size_helper(0, flex_array_size, obj, data, 0 + unconst); | |
712 | check_one_size_helper(sizeof(*obj->data), | |
713 | flex_array_size, obj, data, 1 + unconst); | |
714 | check_one_size_helper(7 * sizeof(*obj->data), | |
715 | flex_array_size, obj, data, 7 + unconst); | |
716 | check_one_size_helper(SIZE_MAX, | |
717 | flex_array_size, obj, data, -1 + unconst); | |
718 | check_one_size_helper(SIZE_MAX, | |
719 | flex_array_size, obj, data, SIZE_MAX - 4 + unconst); | |
e1be43d9 KC |
720 | |
721 | var = 4; | |
617f55e2 KC |
722 | check_one_size_helper(sizeof(*obj) + (4 * sizeof(*obj->data)), |
723 | struct_size, obj, data, var++); | |
724 | check_one_size_helper(sizeof(*obj) + (5 * sizeof(*obj->data)), | |
725 | struct_size, obj, data, var++); | |
726 | check_one_size_helper(sizeof(*obj), struct_size, obj, data, 0 + unconst); | |
727 | check_one_size_helper(sizeof(*obj) + sizeof(*obj->data), | |
728 | struct_size, obj, data, 1 + unconst); | |
729 | check_one_size_helper(SIZE_MAX, | |
730 | struct_size, obj, data, -3 + unconst); | |
731 | check_one_size_helper(SIZE_MAX, | |
732 | struct_size, obj, data, SIZE_MAX - 3 + unconst); | |
733 | ||
734 | kunit_info(test, "%d overflow size helper tests finished\n", count); | |
735 | #undef check_one_size_helper | |
e1be43d9 KC |
736 | } |
737 | ||
4b21d25b KC |
738 | static void overflows_type_test(struct kunit *test) |
739 | { | |
740 | int count = 0; | |
741 | unsigned int var; | |
742 | ||
743 | #define __TEST_OVERFLOWS_TYPE(func, arg1, arg2, of) do { \ | |
744 | bool __of = func(arg1, arg2); \ | |
745 | KUNIT_EXPECT_EQ_MSG(test, __of, of, \ | |
746 | "expected " #func "(" #arg1 ", " #arg2 " to%s overflow\n",\ | |
747 | of ? "" : " not"); \ | |
748 | count++; \ | |
749 | } while (0) | |
750 | ||
751 | /* Args are: first type, second type, value, overflow expected */ | |
752 | #define TEST_OVERFLOWS_TYPE(__t1, __t2, v, of) do { \ | |
753 | __t1 t1 = (v); \ | |
754 | __t2 t2; \ | |
755 | __TEST_OVERFLOWS_TYPE(__overflows_type, t1, t2, of); \ | |
756 | __TEST_OVERFLOWS_TYPE(__overflows_type, t1, __t2, of); \ | |
757 | __TEST_OVERFLOWS_TYPE(__overflows_type_constexpr, t1, t2, of); \ | |
758 | __TEST_OVERFLOWS_TYPE(__overflows_type_constexpr, t1, __t2, of);\ | |
759 | } while (0) | |
760 | ||
761 | TEST_OVERFLOWS_TYPE(u8, u8, U8_MAX, false); | |
762 | TEST_OVERFLOWS_TYPE(u8, u16, U8_MAX, false); | |
763 | TEST_OVERFLOWS_TYPE(u8, s8, U8_MAX, true); | |
764 | TEST_OVERFLOWS_TYPE(u8, s8, S8_MAX, false); | |
765 | TEST_OVERFLOWS_TYPE(u8, s8, (u8)S8_MAX + 1, true); | |
766 | TEST_OVERFLOWS_TYPE(u8, s16, U8_MAX, false); | |
767 | TEST_OVERFLOWS_TYPE(s8, u8, S8_MAX, false); | |
768 | TEST_OVERFLOWS_TYPE(s8, u8, -1, true); | |
769 | TEST_OVERFLOWS_TYPE(s8, u8, S8_MIN, true); | |
770 | TEST_OVERFLOWS_TYPE(s8, u16, S8_MAX, false); | |
771 | TEST_OVERFLOWS_TYPE(s8, u16, -1, true); | |
772 | TEST_OVERFLOWS_TYPE(s8, u16, S8_MIN, true); | |
773 | TEST_OVERFLOWS_TYPE(s8, u32, S8_MAX, false); | |
774 | TEST_OVERFLOWS_TYPE(s8, u32, -1, true); | |
775 | TEST_OVERFLOWS_TYPE(s8, u32, S8_MIN, true); | |
776 | #if BITS_PER_LONG == 64 | |
777 | TEST_OVERFLOWS_TYPE(s8, u64, S8_MAX, false); | |
778 | TEST_OVERFLOWS_TYPE(s8, u64, -1, true); | |
779 | TEST_OVERFLOWS_TYPE(s8, u64, S8_MIN, true); | |
780 | #endif | |
781 | TEST_OVERFLOWS_TYPE(s8, s8, S8_MAX, false); | |
782 | TEST_OVERFLOWS_TYPE(s8, s8, S8_MIN, false); | |
783 | TEST_OVERFLOWS_TYPE(s8, s16, S8_MAX, false); | |
784 | TEST_OVERFLOWS_TYPE(s8, s16, S8_MIN, false); | |
785 | TEST_OVERFLOWS_TYPE(u16, u8, U8_MAX, false); | |
786 | TEST_OVERFLOWS_TYPE(u16, u8, (u16)U8_MAX + 1, true); | |
787 | TEST_OVERFLOWS_TYPE(u16, u8, U16_MAX, true); | |
788 | TEST_OVERFLOWS_TYPE(u16, s8, S8_MAX, false); | |
789 | TEST_OVERFLOWS_TYPE(u16, s8, (u16)S8_MAX + 1, true); | |
790 | TEST_OVERFLOWS_TYPE(u16, s8, U16_MAX, true); | |
791 | TEST_OVERFLOWS_TYPE(u16, s16, S16_MAX, false); | |
792 | TEST_OVERFLOWS_TYPE(u16, s16, (u16)S16_MAX + 1, true); | |
793 | TEST_OVERFLOWS_TYPE(u16, s16, U16_MAX, true); | |
794 | TEST_OVERFLOWS_TYPE(u16, u32, U16_MAX, false); | |
795 | TEST_OVERFLOWS_TYPE(u16, s32, U16_MAX, false); | |
796 | TEST_OVERFLOWS_TYPE(s16, u8, U8_MAX, false); | |
797 | TEST_OVERFLOWS_TYPE(s16, u8, (s16)U8_MAX + 1, true); | |
798 | TEST_OVERFLOWS_TYPE(s16, u8, -1, true); | |
799 | TEST_OVERFLOWS_TYPE(s16, u8, S16_MIN, true); | |
800 | TEST_OVERFLOWS_TYPE(s16, u16, S16_MAX, false); | |
801 | TEST_OVERFLOWS_TYPE(s16, u16, -1, true); | |
802 | TEST_OVERFLOWS_TYPE(s16, u16, S16_MIN, true); | |
803 | TEST_OVERFLOWS_TYPE(s16, u32, S16_MAX, false); | |
804 | TEST_OVERFLOWS_TYPE(s16, u32, -1, true); | |
805 | TEST_OVERFLOWS_TYPE(s16, u32, S16_MIN, true); | |
806 | #if BITS_PER_LONG == 64 | |
807 | TEST_OVERFLOWS_TYPE(s16, u64, S16_MAX, false); | |
808 | TEST_OVERFLOWS_TYPE(s16, u64, -1, true); | |
809 | TEST_OVERFLOWS_TYPE(s16, u64, S16_MIN, true); | |
810 | #endif | |
811 | TEST_OVERFLOWS_TYPE(s16, s8, S8_MAX, false); | |
812 | TEST_OVERFLOWS_TYPE(s16, s8, S8_MIN, false); | |
813 | TEST_OVERFLOWS_TYPE(s16, s8, (s16)S8_MAX + 1, true); | |
814 | TEST_OVERFLOWS_TYPE(s16, s8, (s16)S8_MIN - 1, true); | |
815 | TEST_OVERFLOWS_TYPE(s16, s8, S16_MAX, true); | |
816 | TEST_OVERFLOWS_TYPE(s16, s8, S16_MIN, true); | |
817 | TEST_OVERFLOWS_TYPE(s16, s16, S16_MAX, false); | |
818 | TEST_OVERFLOWS_TYPE(s16, s16, S16_MIN, false); | |
819 | TEST_OVERFLOWS_TYPE(s16, s32, S16_MAX, false); | |
820 | TEST_OVERFLOWS_TYPE(s16, s32, S16_MIN, false); | |
821 | TEST_OVERFLOWS_TYPE(u32, u8, U8_MAX, false); | |
822 | TEST_OVERFLOWS_TYPE(u32, u8, (u32)U8_MAX + 1, true); | |
823 | TEST_OVERFLOWS_TYPE(u32, u8, U32_MAX, true); | |
824 | TEST_OVERFLOWS_TYPE(u32, s8, S8_MAX, false); | |
825 | TEST_OVERFLOWS_TYPE(u32, s8, (u32)S8_MAX + 1, true); | |
826 | TEST_OVERFLOWS_TYPE(u32, s8, U32_MAX, true); | |
827 | TEST_OVERFLOWS_TYPE(u32, u16, U16_MAX, false); | |
828 | TEST_OVERFLOWS_TYPE(u32, u16, U16_MAX + 1, true); | |
829 | TEST_OVERFLOWS_TYPE(u32, u16, U32_MAX, true); | |
830 | TEST_OVERFLOWS_TYPE(u32, s16, S16_MAX, false); | |
831 | TEST_OVERFLOWS_TYPE(u32, s16, (u32)S16_MAX + 1, true); | |
832 | TEST_OVERFLOWS_TYPE(u32, s16, U32_MAX, true); | |
833 | TEST_OVERFLOWS_TYPE(u32, u32, U32_MAX, false); | |
834 | TEST_OVERFLOWS_TYPE(u32, s32, S32_MAX, false); | |
835 | TEST_OVERFLOWS_TYPE(u32, s32, U32_MAX, true); | |
836 | TEST_OVERFLOWS_TYPE(u32, s32, (u32)S32_MAX + 1, true); | |
837 | #if BITS_PER_LONG == 64 | |
838 | TEST_OVERFLOWS_TYPE(u32, u64, U32_MAX, false); | |
839 | TEST_OVERFLOWS_TYPE(u32, s64, U32_MAX, false); | |
840 | #endif | |
841 | TEST_OVERFLOWS_TYPE(s32, u8, U8_MAX, false); | |
842 | TEST_OVERFLOWS_TYPE(s32, u8, (s32)U8_MAX + 1, true); | |
843 | TEST_OVERFLOWS_TYPE(s32, u16, S32_MAX, true); | |
844 | TEST_OVERFLOWS_TYPE(s32, u8, -1, true); | |
845 | TEST_OVERFLOWS_TYPE(s32, u8, S32_MIN, true); | |
846 | TEST_OVERFLOWS_TYPE(s32, u16, U16_MAX, false); | |
847 | TEST_OVERFLOWS_TYPE(s32, u16, (s32)U16_MAX + 1, true); | |
848 | TEST_OVERFLOWS_TYPE(s32, u16, S32_MAX, true); | |
849 | TEST_OVERFLOWS_TYPE(s32, u16, -1, true); | |
850 | TEST_OVERFLOWS_TYPE(s32, u16, S32_MIN, true); | |
851 | TEST_OVERFLOWS_TYPE(s32, u32, S32_MAX, false); | |
852 | TEST_OVERFLOWS_TYPE(s32, u32, -1, true); | |
853 | TEST_OVERFLOWS_TYPE(s32, u32, S32_MIN, true); | |
854 | #if BITS_PER_LONG == 64 | |
855 | TEST_OVERFLOWS_TYPE(s32, u64, S32_MAX, false); | |
856 | TEST_OVERFLOWS_TYPE(s32, u64, -1, true); | |
857 | TEST_OVERFLOWS_TYPE(s32, u64, S32_MIN, true); | |
858 | #endif | |
859 | TEST_OVERFLOWS_TYPE(s32, s8, S8_MAX, false); | |
860 | TEST_OVERFLOWS_TYPE(s32, s8, S8_MIN, false); | |
861 | TEST_OVERFLOWS_TYPE(s32, s8, (s32)S8_MAX + 1, true); | |
862 | TEST_OVERFLOWS_TYPE(s32, s8, (s32)S8_MIN - 1, true); | |
863 | TEST_OVERFLOWS_TYPE(s32, s8, S32_MAX, true); | |
864 | TEST_OVERFLOWS_TYPE(s32, s8, S32_MIN, true); | |
865 | TEST_OVERFLOWS_TYPE(s32, s16, S16_MAX, false); | |
866 | TEST_OVERFLOWS_TYPE(s32, s16, S16_MIN, false); | |
867 | TEST_OVERFLOWS_TYPE(s32, s16, (s32)S16_MAX + 1, true); | |
868 | TEST_OVERFLOWS_TYPE(s32, s16, (s32)S16_MIN - 1, true); | |
869 | TEST_OVERFLOWS_TYPE(s32, s16, S32_MAX, true); | |
870 | TEST_OVERFLOWS_TYPE(s32, s16, S32_MIN, true); | |
871 | TEST_OVERFLOWS_TYPE(s32, s32, S32_MAX, false); | |
872 | TEST_OVERFLOWS_TYPE(s32, s32, S32_MIN, false); | |
873 | #if BITS_PER_LONG == 64 | |
874 | TEST_OVERFLOWS_TYPE(s32, s64, S32_MAX, false); | |
875 | TEST_OVERFLOWS_TYPE(s32, s64, S32_MIN, false); | |
876 | TEST_OVERFLOWS_TYPE(u64, u8, U64_MAX, true); | |
877 | TEST_OVERFLOWS_TYPE(u64, u8, U8_MAX, false); | |
878 | TEST_OVERFLOWS_TYPE(u64, u8, (u64)U8_MAX + 1, true); | |
879 | TEST_OVERFLOWS_TYPE(u64, u16, U64_MAX, true); | |
880 | TEST_OVERFLOWS_TYPE(u64, u16, U16_MAX, false); | |
881 | TEST_OVERFLOWS_TYPE(u64, u16, (u64)U16_MAX + 1, true); | |
882 | TEST_OVERFLOWS_TYPE(u64, u32, U64_MAX, true); | |
883 | TEST_OVERFLOWS_TYPE(u64, u32, U32_MAX, false); | |
884 | TEST_OVERFLOWS_TYPE(u64, u32, (u64)U32_MAX + 1, true); | |
885 | TEST_OVERFLOWS_TYPE(u64, u64, U64_MAX, false); | |
886 | TEST_OVERFLOWS_TYPE(u64, s8, S8_MAX, false); | |
887 | TEST_OVERFLOWS_TYPE(u64, s8, (u64)S8_MAX + 1, true); | |
888 | TEST_OVERFLOWS_TYPE(u64, s8, U64_MAX, true); | |
889 | TEST_OVERFLOWS_TYPE(u64, s16, S16_MAX, false); | |
890 | TEST_OVERFLOWS_TYPE(u64, s16, (u64)S16_MAX + 1, true); | |
891 | TEST_OVERFLOWS_TYPE(u64, s16, U64_MAX, true); | |
892 | TEST_OVERFLOWS_TYPE(u64, s32, S32_MAX, false); | |
893 | TEST_OVERFLOWS_TYPE(u64, s32, (u64)S32_MAX + 1, true); | |
894 | TEST_OVERFLOWS_TYPE(u64, s32, U64_MAX, true); | |
895 | TEST_OVERFLOWS_TYPE(u64, s64, S64_MAX, false); | |
896 | TEST_OVERFLOWS_TYPE(u64, s64, U64_MAX, true); | |
897 | TEST_OVERFLOWS_TYPE(u64, s64, (u64)S64_MAX + 1, true); | |
898 | TEST_OVERFLOWS_TYPE(s64, u8, S64_MAX, true); | |
899 | TEST_OVERFLOWS_TYPE(s64, u8, S64_MIN, true); | |
900 | TEST_OVERFLOWS_TYPE(s64, u8, -1, true); | |
901 | TEST_OVERFLOWS_TYPE(s64, u8, U8_MAX, false); | |
902 | TEST_OVERFLOWS_TYPE(s64, u8, (s64)U8_MAX + 1, true); | |
903 | TEST_OVERFLOWS_TYPE(s64, u16, S64_MAX, true); | |
904 | TEST_OVERFLOWS_TYPE(s64, u16, S64_MIN, true); | |
905 | TEST_OVERFLOWS_TYPE(s64, u16, -1, true); | |
906 | TEST_OVERFLOWS_TYPE(s64, u16, U16_MAX, false); | |
907 | TEST_OVERFLOWS_TYPE(s64, u16, (s64)U16_MAX + 1, true); | |
908 | TEST_OVERFLOWS_TYPE(s64, u32, S64_MAX, true); | |
909 | TEST_OVERFLOWS_TYPE(s64, u32, S64_MIN, true); | |
910 | TEST_OVERFLOWS_TYPE(s64, u32, -1, true); | |
911 | TEST_OVERFLOWS_TYPE(s64, u32, U32_MAX, false); | |
912 | TEST_OVERFLOWS_TYPE(s64, u32, (s64)U32_MAX + 1, true); | |
913 | TEST_OVERFLOWS_TYPE(s64, u64, S64_MAX, false); | |
914 | TEST_OVERFLOWS_TYPE(s64, u64, S64_MIN, true); | |
915 | TEST_OVERFLOWS_TYPE(s64, u64, -1, true); | |
916 | TEST_OVERFLOWS_TYPE(s64, s8, S8_MAX, false); | |
917 | TEST_OVERFLOWS_TYPE(s64, s8, S8_MIN, false); | |
918 | TEST_OVERFLOWS_TYPE(s64, s8, (s64)S8_MAX + 1, true); | |
919 | TEST_OVERFLOWS_TYPE(s64, s8, (s64)S8_MIN - 1, true); | |
920 | TEST_OVERFLOWS_TYPE(s64, s8, S64_MAX, true); | |
921 | TEST_OVERFLOWS_TYPE(s64, s16, S16_MAX, false); | |
922 | TEST_OVERFLOWS_TYPE(s64, s16, S16_MIN, false); | |
923 | TEST_OVERFLOWS_TYPE(s64, s16, (s64)S16_MAX + 1, true); | |
924 | TEST_OVERFLOWS_TYPE(s64, s16, (s64)S16_MIN - 1, true); | |
925 | TEST_OVERFLOWS_TYPE(s64, s16, S64_MAX, true); | |
926 | TEST_OVERFLOWS_TYPE(s64, s32, S32_MAX, false); | |
927 | TEST_OVERFLOWS_TYPE(s64, s32, S32_MIN, false); | |
928 | TEST_OVERFLOWS_TYPE(s64, s32, (s64)S32_MAX + 1, true); | |
929 | TEST_OVERFLOWS_TYPE(s64, s32, (s64)S32_MIN - 1, true); | |
930 | TEST_OVERFLOWS_TYPE(s64, s32, S64_MAX, true); | |
931 | TEST_OVERFLOWS_TYPE(s64, s64, S64_MAX, false); | |
932 | TEST_OVERFLOWS_TYPE(s64, s64, S64_MIN, false); | |
933 | #endif | |
934 | ||
935 | /* Check for macro side-effects. */ | |
936 | var = INT_MAX - 1; | |
937 | __TEST_OVERFLOWS_TYPE(__overflows_type, var++, int, false); | |
938 | __TEST_OVERFLOWS_TYPE(__overflows_type, var++, int, false); | |
939 | __TEST_OVERFLOWS_TYPE(__overflows_type, var++, int, true); | |
940 | var = INT_MAX - 1; | |
941 | __TEST_OVERFLOWS_TYPE(overflows_type, var++, int, false); | |
942 | __TEST_OVERFLOWS_TYPE(overflows_type, var++, int, false); | |
943 | __TEST_OVERFLOWS_TYPE(overflows_type, var++, int, true); | |
944 | ||
945 | kunit_info(test, "%d overflows_type() tests finished\n", count); | |
946 | #undef TEST_OVERFLOWS_TYPE | |
947 | #undef __TEST_OVERFLOWS_TYPE | |
948 | } | |
949 | ||
950 | static void same_type_test(struct kunit *test) | |
951 | { | |
952 | int count = 0; | |
953 | int var; | |
954 | ||
955 | #define TEST_SAME_TYPE(t1, t2, same) do { \ | |
956 | typeof(t1) __t1h = type_max(t1); \ | |
957 | typeof(t1) __t1l = type_min(t1); \ | |
958 | typeof(t2) __t2h = type_max(t2); \ | |
959 | typeof(t2) __t2l = type_min(t2); \ | |
960 | KUNIT_EXPECT_EQ(test, true, __same_type(t1, __t1h)); \ | |
961 | KUNIT_EXPECT_EQ(test, true, __same_type(t1, __t1l)); \ | |
962 | KUNIT_EXPECT_EQ(test, true, __same_type(__t1h, t1)); \ | |
963 | KUNIT_EXPECT_EQ(test, true, __same_type(__t1l, t1)); \ | |
964 | KUNIT_EXPECT_EQ(test, true, __same_type(t2, __t2h)); \ | |
965 | KUNIT_EXPECT_EQ(test, true, __same_type(t2, __t2l)); \ | |
966 | KUNIT_EXPECT_EQ(test, true, __same_type(__t2h, t2)); \ | |
967 | KUNIT_EXPECT_EQ(test, true, __same_type(__t2l, t2)); \ | |
968 | KUNIT_EXPECT_EQ(test, same, __same_type(t1, t2)); \ | |
969 | KUNIT_EXPECT_EQ(test, same, __same_type(t2, __t1h)); \ | |
970 | KUNIT_EXPECT_EQ(test, same, __same_type(t2, __t1l)); \ | |
971 | KUNIT_EXPECT_EQ(test, same, __same_type(__t1h, t2)); \ | |
972 | KUNIT_EXPECT_EQ(test, same, __same_type(__t1l, t2)); \ | |
973 | KUNIT_EXPECT_EQ(test, same, __same_type(t1, __t2h)); \ | |
974 | KUNIT_EXPECT_EQ(test, same, __same_type(t1, __t2l)); \ | |
975 | KUNIT_EXPECT_EQ(test, same, __same_type(__t2h, t1)); \ | |
976 | KUNIT_EXPECT_EQ(test, same, __same_type(__t2l, t1)); \ | |
977 | } while (0) | |
978 | ||
979 | #if BITS_PER_LONG == 64 | |
980 | # define TEST_SAME_TYPE64(base, t, m) TEST_SAME_TYPE(base, t, m) | |
981 | #else | |
982 | # define TEST_SAME_TYPE64(base, t, m) do { } while (0) | |
983 | #endif | |
984 | ||
985 | #define TEST_TYPE_SETS(base, mu8, mu16, mu32, ms8, ms16, ms32, mu64, ms64) \ | |
986 | do { \ | |
987 | TEST_SAME_TYPE(base, u8, mu8); \ | |
988 | TEST_SAME_TYPE(base, u16, mu16); \ | |
989 | TEST_SAME_TYPE(base, u32, mu32); \ | |
990 | TEST_SAME_TYPE(base, s8, ms8); \ | |
991 | TEST_SAME_TYPE(base, s16, ms16); \ | |
992 | TEST_SAME_TYPE(base, s32, ms32); \ | |
993 | TEST_SAME_TYPE64(base, u64, mu64); \ | |
994 | TEST_SAME_TYPE64(base, s64, ms64); \ | |
995 | } while (0) | |
996 | ||
997 | TEST_TYPE_SETS(u8, true, false, false, false, false, false, false, false); | |
998 | TEST_TYPE_SETS(u16, false, true, false, false, false, false, false, false); | |
999 | TEST_TYPE_SETS(u32, false, false, true, false, false, false, false, false); | |
1000 | TEST_TYPE_SETS(s8, false, false, false, true, false, false, false, false); | |
1001 | TEST_TYPE_SETS(s16, false, false, false, false, true, false, false, false); | |
1002 | TEST_TYPE_SETS(s32, false, false, false, false, false, true, false, false); | |
1003 | #if BITS_PER_LONG == 64 | |
1004 | TEST_TYPE_SETS(u64, false, false, false, false, false, false, true, false); | |
1005 | TEST_TYPE_SETS(s64, false, false, false, false, false, false, false, true); | |
1006 | #endif | |
1007 | ||
1008 | /* Check for macro side-effects. */ | |
1009 | var = 4; | |
1010 | KUNIT_EXPECT_EQ(test, var, 4); | |
1011 | KUNIT_EXPECT_TRUE(test, __same_type(var++, int)); | |
1012 | KUNIT_EXPECT_EQ(test, var, 4); | |
1013 | KUNIT_EXPECT_TRUE(test, __same_type(int, var++)); | |
1014 | KUNIT_EXPECT_EQ(test, var, 4); | |
1015 | KUNIT_EXPECT_TRUE(test, __same_type(var++, var++)); | |
1016 | KUNIT_EXPECT_EQ(test, var, 4); | |
1017 | ||
1018 | kunit_info(test, "%d __same_type() tests finished\n", count); | |
1019 | ||
1020 | #undef TEST_TYPE_SETS | |
1021 | #undef TEST_SAME_TYPE64 | |
1022 | #undef TEST_SAME_TYPE | |
1023 | } | |
1024 | ||
1025 | static void castable_to_type_test(struct kunit *test) | |
1026 | { | |
1027 | int count = 0; | |
1028 | ||
1029 | #define TEST_CASTABLE_TO_TYPE(arg1, arg2, pass) do { \ | |
1030 | bool __pass = castable_to_type(arg1, arg2); \ | |
1031 | KUNIT_EXPECT_EQ_MSG(test, __pass, pass, \ | |
1032 | "expected castable_to_type(" #arg1 ", " #arg2 ") to%s pass\n",\ | |
1033 | pass ? "" : " not"); \ | |
1034 | count++; \ | |
1035 | } while (0) | |
1036 | ||
1037 | TEST_CASTABLE_TO_TYPE(16, u8, true); | |
1038 | TEST_CASTABLE_TO_TYPE(16, u16, true); | |
1039 | TEST_CASTABLE_TO_TYPE(16, u32, true); | |
1040 | TEST_CASTABLE_TO_TYPE(16, s8, true); | |
1041 | TEST_CASTABLE_TO_TYPE(16, s16, true); | |
1042 | TEST_CASTABLE_TO_TYPE(16, s32, true); | |
1043 | TEST_CASTABLE_TO_TYPE(-16, s8, true); | |
1044 | TEST_CASTABLE_TO_TYPE(-16, s16, true); | |
1045 | TEST_CASTABLE_TO_TYPE(-16, s32, true); | |
1046 | #if BITS_PER_LONG == 64 | |
1047 | TEST_CASTABLE_TO_TYPE(16, u64, true); | |
1048 | TEST_CASTABLE_TO_TYPE(-16, s64, true); | |
1049 | #endif | |
1050 | ||
1051 | #define TEST_CASTABLE_TO_TYPE_VAR(width) do { \ | |
1052 | u ## width u ## width ## var = 0; \ | |
1053 | s ## width s ## width ## var = 0; \ | |
1054 | \ | |
1055 | /* Constant expressions that fit types. */ \ | |
1056 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), u ## width, true); \ | |
1057 | TEST_CASTABLE_TO_TYPE(type_min(u ## width), u ## width, true); \ | |
1058 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), u ## width ## var, true); \ | |
1059 | TEST_CASTABLE_TO_TYPE(type_min(u ## width), u ## width ## var, true); \ | |
1060 | TEST_CASTABLE_TO_TYPE(type_max(s ## width), s ## width, true); \ | |
1061 | TEST_CASTABLE_TO_TYPE(type_min(s ## width), s ## width, true); \ | |
1062 | TEST_CASTABLE_TO_TYPE(type_max(s ## width), s ## width ## var, true); \ | |
1063 | TEST_CASTABLE_TO_TYPE(type_min(u ## width), s ## width ## var, true); \ | |
1064 | /* Constant expressions that do not fit types. */ \ | |
1065 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), s ## width, false); \ | |
1066 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), s ## width ## var, false); \ | |
1067 | TEST_CASTABLE_TO_TYPE(type_min(s ## width), u ## width, false); \ | |
1068 | TEST_CASTABLE_TO_TYPE(type_min(s ## width), u ## width ## var, false); \ | |
1069 | /* Non-constant expression with mismatched type. */ \ | |
1070 | TEST_CASTABLE_TO_TYPE(s ## width ## var, u ## width, false); \ | |
1071 | TEST_CASTABLE_TO_TYPE(u ## width ## var, s ## width, false); \ | |
1072 | } while (0) | |
1073 | ||
1074 | #define TEST_CASTABLE_TO_TYPE_RANGE(width) do { \ | |
1075 | unsigned long big = U ## width ## _MAX; \ | |
1076 | signed long small = S ## width ## _MIN; \ | |
1077 | u ## width u ## width ## var = 0; \ | |
1078 | s ## width s ## width ## var = 0; \ | |
1079 | \ | |
1080 | /* Constant expression in range. */ \ | |
1081 | TEST_CASTABLE_TO_TYPE(U ## width ## _MAX, u ## width, true); \ | |
1082 | TEST_CASTABLE_TO_TYPE(U ## width ## _MAX, u ## width ## var, true); \ | |
1083 | TEST_CASTABLE_TO_TYPE(S ## width ## _MIN, s ## width, true); \ | |
1084 | TEST_CASTABLE_TO_TYPE(S ## width ## _MIN, s ## width ## var, true); \ | |
1085 | /* Constant expression out of range. */ \ | |
1086 | TEST_CASTABLE_TO_TYPE((unsigned long)U ## width ## _MAX + 1, u ## width, false); \ | |
1087 | TEST_CASTABLE_TO_TYPE((unsigned long)U ## width ## _MAX + 1, u ## width ## var, false); \ | |
1088 | TEST_CASTABLE_TO_TYPE((signed long)S ## width ## _MIN - 1, s ## width, false); \ | |
1089 | TEST_CASTABLE_TO_TYPE((signed long)S ## width ## _MIN - 1, s ## width ## var, false); \ | |
1090 | /* Non-constant expression with mismatched type. */ \ | |
1091 | TEST_CASTABLE_TO_TYPE(big, u ## width, false); \ | |
1092 | TEST_CASTABLE_TO_TYPE(big, u ## width ## var, false); \ | |
1093 | TEST_CASTABLE_TO_TYPE(small, s ## width, false); \ | |
1094 | TEST_CASTABLE_TO_TYPE(small, s ## width ## var, false); \ | |
1095 | } while (0) | |
1096 | ||
1097 | TEST_CASTABLE_TO_TYPE_VAR(8); | |
1098 | TEST_CASTABLE_TO_TYPE_VAR(16); | |
1099 | TEST_CASTABLE_TO_TYPE_VAR(32); | |
1100 | #if BITS_PER_LONG == 64 | |
1101 | TEST_CASTABLE_TO_TYPE_VAR(64); | |
1102 | #endif | |
1103 | ||
1104 | TEST_CASTABLE_TO_TYPE_RANGE(8); | |
1105 | TEST_CASTABLE_TO_TYPE_RANGE(16); | |
1106 | #if BITS_PER_LONG == 64 | |
1107 | TEST_CASTABLE_TO_TYPE_RANGE(32); | |
1108 | #endif | |
1109 | kunit_info(test, "%d castable_to_type() tests finished\n", count); | |
1110 | ||
1111 | #undef TEST_CASTABLE_TO_TYPE_RANGE | |
1112 | #undef TEST_CASTABLE_TO_TYPE_VAR | |
1113 | #undef TEST_CASTABLE_TO_TYPE | |
1114 | } | |
1115 | ||
617f55e2 | 1116 | static struct kunit_case overflow_test_cases[] = { |
d219d2a9 KC |
1117 | KUNIT_CASE(u8_u8__u8_overflow_test), |
1118 | KUNIT_CASE(s8_s8__s8_overflow_test), | |
1119 | KUNIT_CASE(u16_u16__u16_overflow_test), | |
1120 | KUNIT_CASE(s16_s16__s16_overflow_test), | |
1121 | KUNIT_CASE(u32_u32__u32_overflow_test), | |
1122 | KUNIT_CASE(s32_s32__s32_overflow_test), | |
d219d2a9 KC |
1123 | KUNIT_CASE(u64_u64__u64_overflow_test), |
1124 | KUNIT_CASE(s64_s64__s64_overflow_test), | |
d219d2a9 | 1125 | KUNIT_CASE(u32_u32__int_overflow_test), |
0e5b9f25 | 1126 | KUNIT_CASE(u32_u32__u8_overflow_test), |
d219d2a9 KC |
1127 | KUNIT_CASE(u8_u8__int_overflow_test), |
1128 | KUNIT_CASE(int_int__u8_overflow_test), | |
77974225 KC |
1129 | KUNIT_CASE(shift_sane_test), |
1130 | KUNIT_CASE(shift_overflow_test), | |
1131 | KUNIT_CASE(shift_truncate_test), | |
1132 | KUNIT_CASE(shift_nonsense_test), | |
617f55e2 KC |
1133 | KUNIT_CASE(overflow_allocation_test), |
1134 | KUNIT_CASE(overflow_size_helpers_test), | |
4b21d25b KC |
1135 | KUNIT_CASE(overflows_type_test), |
1136 | KUNIT_CASE(same_type_test), | |
1137 | KUNIT_CASE(castable_to_type_test), | |
617f55e2 KC |
1138 | {} |
1139 | }; | |
455a35a6 | 1140 | |
617f55e2 KC |
1141 | static struct kunit_suite overflow_test_suite = { |
1142 | .name = "overflow", | |
1143 | .test_cases = overflow_test_cases, | |
1144 | }; | |
455a35a6 | 1145 | |
617f55e2 | 1146 | kunit_test_suite(overflow_test_suite); |
455a35a6 | 1147 | |
455a35a6 | 1148 | MODULE_LICENSE("Dual MIT/GPL"); |