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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, \ | |
d70de805 | 261 | "expected check "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, \ | |
d70de805 | 264 | "expected check "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); \ | |
d70de805 KC |
268 | KUNIT_EXPECT_EQ_MSG(test, _a_orig, _a_bump, \ |
269 | "Unexpected check " #op " macro side-effect!\n"); \ | |
270 | KUNIT_EXPECT_EQ_MSG(test, _b_orig, _b_bump, \ | |
271 | "Unexpected check " #op " macro side-effect!\n"); \ | |
272 | \ | |
273 | _r = wrapping_ ## op(t, a, b); \ | |
274 | KUNIT_EXPECT_TRUE_MSG(test, _r == r, \ | |
275 | "expected wrap "fmt" "sym" "fmt" == "fmt", got "fmt" (type %s)\n", \ | |
276 | a, b, r, _r, #t); \ | |
277 | /* Check for internal macro side-effects. */ \ | |
278 | _a_orig = a; \ | |
279 | _b_orig = b; \ | |
280 | _r = wrapping_ ## op(t, _a_orig++, _b_orig++); \ | |
281 | KUNIT_EXPECT_EQ_MSG(test, _a_orig, _a_bump, \ | |
282 | "Unexpected wrap " #op " macro side-effect!\n"); \ | |
283 | KUNIT_EXPECT_EQ_MSG(test, _b_orig, _b_bump, \ | |
284 | "Unexpected wrap " #op " macro side-effect!\n"); \ | |
6d334432 RV |
285 | } while (0) |
286 | ||
08d45ee8 KC |
287 | static int global_counter; |
288 | static void bump_counter(void) | |
289 | { | |
290 | global_counter++; | |
291 | } | |
292 | ||
293 | static int get_index(void) | |
294 | { | |
295 | volatile int index = 0; | |
296 | bump_counter(); | |
297 | return index; | |
298 | } | |
299 | ||
300 | #define check_self_op(fmt, op, sym, a, b) do { \ | |
301 | typeof(a + 0) _a = a; \ | |
302 | typeof(b + 0) _b = b; \ | |
303 | typeof(a + 0) _a_sym = a; \ | |
304 | typeof(a + 0) _a_orig[1] = { a }; \ | |
305 | typeof(b + 0) _b_orig = b; \ | |
306 | typeof(b + 0) _b_bump = b + 1; \ | |
307 | typeof(a + 0) _r; \ | |
308 | \ | |
309 | _a_sym sym _b; \ | |
310 | _r = wrapping_ ## op(_a, _b); \ | |
311 | KUNIT_EXPECT_TRUE_MSG(test, _r == _a_sym, \ | |
312 | "expected "fmt" "#op" "fmt" == "fmt", got "fmt"\n", \ | |
313 | a, b, _a_sym, _r); \ | |
314 | KUNIT_EXPECT_TRUE_MSG(test, _a == _a_sym, \ | |
315 | "expected "fmt" "#op" "fmt" == "fmt", got "fmt"\n", \ | |
316 | a, b, _a_sym, _a); \ | |
317 | /* Check for internal macro side-effects. */ \ | |
318 | global_counter = 0; \ | |
319 | wrapping_ ## op(_a_orig[get_index()], _b_orig++); \ | |
320 | KUNIT_EXPECT_EQ_MSG(test, global_counter, 1, \ | |
321 | "Unexpected wrapping_" #op " macro side-effect on arg1!\n"); \ | |
322 | KUNIT_EXPECT_EQ_MSG(test, _b_orig, _b_bump, \ | |
323 | "Unexpected wrapping_" #op " macro side-effect on arg2!\n"); \ | |
324 | } while (0) | |
325 | ||
d219d2a9 KC |
326 | #define DEFINE_TEST_FUNC_TYPED(n, t, fmt) \ |
327 | static void do_test_ ## n(struct kunit *test, const struct test_ ## n *p) \ | |
72c3ebea | 328 | { \ |
d70de805 | 329 | /* check_{add,sub,mul}_overflow() and wrapping_{add,sub,mul} */ \ |
6d334432 RV |
330 | check_one_op(t, fmt, add, "+", p->a, p->b, p->sum, p->s_of); \ |
331 | check_one_op(t, fmt, add, "+", p->b, p->a, p->sum, p->s_of); \ | |
332 | check_one_op(t, fmt, sub, "-", p->a, p->b, p->diff, p->d_of); \ | |
333 | check_one_op(t, fmt, mul, "*", p->a, p->b, p->prod, p->p_of); \ | |
334 | check_one_op(t, fmt, mul, "*", p->b, p->a, p->prod, p->p_of); \ | |
08d45ee8 KC |
335 | /* wrapping_assign_{add,sub}() */ \ |
336 | check_self_op(fmt, assign_add, +=, p->a, p->b); \ | |
337 | check_self_op(fmt, assign_add, +=, p->b, p->a); \ | |
338 | check_self_op(fmt, assign_sub, -=, p->a, p->b); \ | |
455a35a6 RV |
339 | } \ |
340 | \ | |
d219d2a9 | 341 | static void n ## _overflow_test(struct kunit *test) { \ |
455a35a6 RV |
342 | unsigned i; \ |
343 | \ | |
72c3ebea KC |
344 | SKIP_64_ON_32(__same_type(t, u64)); \ |
345 | SKIP_64_ON_32(__same_type(t, s64)); \ | |
346 | SKIP_SIGN_MISMATCH(__same_type(n ## _tests[0].a, u32) && \ | |
347 | __same_type(n ## _tests[0].b, u32) && \ | |
348 | __same_type(n ## _tests[0].sum, int)); \ | |
349 | \ | |
d219d2a9 KC |
350 | for (i = 0; i < ARRAY_SIZE(n ## _tests); ++i) \ |
351 | do_test_ ## n(test, &n ## _tests[i]); \ | |
617f55e2 | 352 | kunit_info(test, "%zu %s arithmetic tests finished\n", \ |
d219d2a9 | 353 | ARRAY_SIZE(n ## _tests), #n); \ |
455a35a6 RV |
354 | } |
355 | ||
d219d2a9 KC |
356 | #define DEFINE_TEST_FUNC(t, fmt) \ |
357 | DEFINE_TEST_FUNC_TYPED(t ## _ ## t ## __ ## t, t, fmt) | |
358 | ||
455a35a6 RV |
359 | DEFINE_TEST_FUNC(u8, "%d"); |
360 | DEFINE_TEST_FUNC(s8, "%d"); | |
361 | DEFINE_TEST_FUNC(u16, "%d"); | |
362 | DEFINE_TEST_FUNC(s16, "%d"); | |
363 | DEFINE_TEST_FUNC(u32, "%u"); | |
364 | DEFINE_TEST_FUNC(s32, "%d"); | |
455a35a6 RV |
365 | DEFINE_TEST_FUNC(u64, "%llu"); |
366 | DEFINE_TEST_FUNC(s64, "%lld"); | |
455a35a6 | 367 | |
d219d2a9 KC |
368 | DEFINE_TEST_ARRAY_TYPED(u32, u32, u8) = { |
369 | {0, 0, 0, 0, 0, false, false, false}, | |
370 | {U8_MAX, 2, 1, U8_MAX - 2, U8_MAX - 1, true, false, true}, | |
371 | {U8_MAX + 1, 0, 0, 0, 0, true, true, false}, | |
372 | }; | |
373 | DEFINE_TEST_FUNC_TYPED(u32_u32__u8, u8, "%d"); | |
374 | ||
375 | DEFINE_TEST_ARRAY_TYPED(u32, u32, int) = { | |
376 | {0, 0, 0, 0, 0, false, false, false}, | |
377 | {U32_MAX, 0, -1, -1, 0, true, true, false}, | |
378 | }; | |
379 | DEFINE_TEST_FUNC_TYPED(u32_u32__int, int, "%d"); | |
380 | ||
381 | DEFINE_TEST_ARRAY_TYPED(u8, u8, int) = { | |
382 | {0, 0, 0, 0, 0, false, false, false}, | |
383 | {U8_MAX, U8_MAX, 2 * U8_MAX, 0, U8_MAX * U8_MAX, false, false, false}, | |
384 | {1, 2, 3, -1, 2, false, false, false}, | |
385 | }; | |
386 | DEFINE_TEST_FUNC_TYPED(u8_u8__int, int, "%d"); | |
387 | ||
388 | DEFINE_TEST_ARRAY_TYPED(int, int, u8) = { | |
389 | {0, 0, 0, 0, 0, false, false, false}, | |
390 | {1, 2, 3, U8_MAX, 2, false, true, false}, | |
391 | {-1, 0, U8_MAX, U8_MAX, 0, true, true, false}, | |
392 | }; | |
393 | DEFINE_TEST_FUNC_TYPED(int_int__u8, u8, "%d"); | |
394 | ||
d36b6ad2 | 395 | /* Args are: value, shift, type, expected result, overflow expected */ |
617f55e2 | 396 | #define TEST_ONE_SHIFT(a, s, t, expect, of) do { \ |
d36b6ad2 KC |
397 | typeof(a) __a = (a); \ |
398 | typeof(s) __s = (s); \ | |
399 | t __e = (expect); \ | |
400 | t __d; \ | |
401 | bool __of = check_shl_overflow(__a, __s, &__d); \ | |
402 | if (__of != of) { \ | |
617f55e2 KC |
403 | KUNIT_EXPECT_EQ_MSG(test, __of, of, \ |
404 | "expected (%s)(%s << %s) to%s overflow\n", \ | |
d36b6ad2 | 405 | #t, #a, #s, of ? "" : " not"); \ |
d36b6ad2 | 406 | } else if (!__of && __d != __e) { \ |
617f55e2 KC |
407 | KUNIT_EXPECT_EQ_MSG(test, __d, __e, \ |
408 | "expected (%s)(%s << %s) == %s\n", \ | |
d36b6ad2 KC |
409 | #t, #a, #s, #expect); \ |
410 | if ((t)-1 < 0) \ | |
617f55e2 | 411 | kunit_info(test, "got %lld\n", (s64)__d); \ |
d36b6ad2 | 412 | else \ |
617f55e2 | 413 | kunit_info(test, "got %llu\n", (u64)__d); \ |
d36b6ad2 | 414 | } \ |
8e7c8ca6 | 415 | count++; \ |
617f55e2 | 416 | } while (0) |
d36b6ad2 | 417 | |
77974225 KC |
418 | static void shift_sane_test(struct kunit *test) |
419 | { | |
420 | int count = 0; | |
421 | ||
d36b6ad2 | 422 | /* Sane shifts. */ |
617f55e2 KC |
423 | TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false); |
424 | TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false); | |
425 | TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false); | |
426 | TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false); | |
427 | TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false); | |
428 | TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false); | |
429 | TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false); | |
430 | TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false); | |
431 | TEST_ONE_SHIFT(1, 0, int, 1 << 0, false); | |
432 | TEST_ONE_SHIFT(1, 16, int, 1 << 16, false); | |
433 | TEST_ONE_SHIFT(1, 30, int, 1 << 30, false); | |
434 | TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false); | |
435 | TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false); | |
436 | TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false); | |
437 | TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false); | |
438 | TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false); | |
439 | TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false); | |
440 | TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false); | |
441 | TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false); | |
442 | TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false); | |
443 | TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false); | |
444 | TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false); | |
445 | TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false); | |
446 | TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false); | |
447 | TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false); | |
448 | TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64, 0xFFFFFFFFULL << 32, false); | |
d36b6ad2 KC |
449 | |
450 | /* Sane shift: start and end with 0, without a too-wide shift. */ | |
617f55e2 KC |
451 | TEST_ONE_SHIFT(0, 7, u8, 0, false); |
452 | TEST_ONE_SHIFT(0, 15, u16, 0, false); | |
453 | TEST_ONE_SHIFT(0, 31, unsigned int, 0, false); | |
454 | TEST_ONE_SHIFT(0, 31, u32, 0, false); | |
455 | TEST_ONE_SHIFT(0, 63, u64, 0, false); | |
d36b6ad2 KC |
456 | |
457 | /* Sane shift: start and end with 0, without reaching signed bit. */ | |
617f55e2 KC |
458 | TEST_ONE_SHIFT(0, 6, s8, 0, false); |
459 | TEST_ONE_SHIFT(0, 14, s16, 0, false); | |
460 | TEST_ONE_SHIFT(0, 30, int, 0, false); | |
461 | TEST_ONE_SHIFT(0, 30, s32, 0, false); | |
462 | TEST_ONE_SHIFT(0, 62, s64, 0, false); | |
d36b6ad2 | 463 | |
77974225 KC |
464 | kunit_info(test, "%d sane shift tests finished\n", count); |
465 | } | |
466 | ||
467 | static void shift_overflow_test(struct kunit *test) | |
468 | { | |
469 | int count = 0; | |
470 | ||
d36b6ad2 | 471 | /* Overflow: shifted the bit off the end. */ |
617f55e2 KC |
472 | TEST_ONE_SHIFT(1, 8, u8, 0, true); |
473 | TEST_ONE_SHIFT(1, 16, u16, 0, true); | |
474 | TEST_ONE_SHIFT(1, 32, unsigned int, 0, true); | |
475 | TEST_ONE_SHIFT(1, 32, u32, 0, true); | |
476 | TEST_ONE_SHIFT(1, 64, u64, 0, true); | |
d36b6ad2 KC |
477 | |
478 | /* Overflow: shifted into the signed bit. */ | |
617f55e2 KC |
479 | TEST_ONE_SHIFT(1, 7, s8, 0, true); |
480 | TEST_ONE_SHIFT(1, 15, s16, 0, true); | |
481 | TEST_ONE_SHIFT(1, 31, int, 0, true); | |
482 | TEST_ONE_SHIFT(1, 31, s32, 0, true); | |
483 | TEST_ONE_SHIFT(1, 63, s64, 0, true); | |
d36b6ad2 KC |
484 | |
485 | /* Overflow: high bit falls off unsigned types. */ | |
486 | /* 10010110 */ | |
617f55e2 | 487 | TEST_ONE_SHIFT(150, 1, u8, 0, true); |
d36b6ad2 | 488 | /* 1000100010010110 */ |
617f55e2 | 489 | TEST_ONE_SHIFT(34966, 1, u16, 0, true); |
d36b6ad2 | 490 | /* 10000100000010001000100010010110 */ |
617f55e2 KC |
491 | TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true); |
492 | TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true); | |
d36b6ad2 | 493 | /* 1000001000010000010000000100000010000100000010001000100010010110 */ |
617f55e2 | 494 | TEST_ONE_SHIFT(9372061470395238550ULL, 1, u64, 0, true); |
d36b6ad2 KC |
495 | |
496 | /* Overflow: bit shifted into signed bit on signed types. */ | |
497 | /* 01001011 */ | |
617f55e2 | 498 | TEST_ONE_SHIFT(75, 1, s8, 0, true); |
d36b6ad2 | 499 | /* 0100010001001011 */ |
617f55e2 | 500 | TEST_ONE_SHIFT(17483, 1, s16, 0, true); |
d36b6ad2 | 501 | /* 01000010000001000100010001001011 */ |
617f55e2 KC |
502 | TEST_ONE_SHIFT(1107575883, 1, s32, 0, true); |
503 | TEST_ONE_SHIFT(1107575883, 1, int, 0, true); | |
d36b6ad2 | 504 | /* 0100000100001000001000000010000001000010000001000100010001001011 */ |
617f55e2 | 505 | TEST_ONE_SHIFT(4686030735197619275LL, 1, s64, 0, true); |
d36b6ad2 KC |
506 | |
507 | /* Overflow: bit shifted past signed bit on signed types. */ | |
508 | /* 01001011 */ | |
617f55e2 | 509 | TEST_ONE_SHIFT(75, 2, s8, 0, true); |
d36b6ad2 | 510 | /* 0100010001001011 */ |
617f55e2 | 511 | TEST_ONE_SHIFT(17483, 2, s16, 0, true); |
d36b6ad2 | 512 | /* 01000010000001000100010001001011 */ |
617f55e2 KC |
513 | TEST_ONE_SHIFT(1107575883, 2, s32, 0, true); |
514 | TEST_ONE_SHIFT(1107575883, 2, int, 0, true); | |
d36b6ad2 | 515 | /* 0100000100001000001000000010000001000010000001000100010001001011 */ |
617f55e2 | 516 | TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true); |
d36b6ad2 | 517 | |
77974225 KC |
518 | kunit_info(test, "%d overflow shift tests finished\n", count); |
519 | } | |
520 | ||
521 | static void shift_truncate_test(struct kunit *test) | |
522 | { | |
523 | int count = 0; | |
524 | ||
d36b6ad2 | 525 | /* Overflow: values larger than destination type. */ |
617f55e2 KC |
526 | TEST_ONE_SHIFT(0x100, 0, u8, 0, true); |
527 | TEST_ONE_SHIFT(0xFF, 0, s8, 0, true); | |
528 | TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true); | |
529 | TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true); | |
530 | TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true); | |
531 | TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true); | |
532 | TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true); | |
533 | TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true); | |
534 | TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true); | |
d36b6ad2 | 535 | |
77974225 KC |
536 | /* Overflow: shifted at or beyond entire type's bit width. */ |
537 | TEST_ONE_SHIFT(0, 8, u8, 0, true); | |
538 | TEST_ONE_SHIFT(0, 9, u8, 0, true); | |
539 | TEST_ONE_SHIFT(0, 8, s8, 0, true); | |
540 | TEST_ONE_SHIFT(0, 9, s8, 0, true); | |
541 | TEST_ONE_SHIFT(0, 16, u16, 0, true); | |
542 | TEST_ONE_SHIFT(0, 17, u16, 0, true); | |
543 | TEST_ONE_SHIFT(0, 16, s16, 0, true); | |
544 | TEST_ONE_SHIFT(0, 17, s16, 0, true); | |
545 | TEST_ONE_SHIFT(0, 32, u32, 0, true); | |
546 | TEST_ONE_SHIFT(0, 33, u32, 0, true); | |
547 | TEST_ONE_SHIFT(0, 32, int, 0, true); | |
548 | TEST_ONE_SHIFT(0, 33, int, 0, true); | |
549 | TEST_ONE_SHIFT(0, 32, s32, 0, true); | |
550 | TEST_ONE_SHIFT(0, 33, s32, 0, true); | |
551 | TEST_ONE_SHIFT(0, 64, u64, 0, true); | |
552 | TEST_ONE_SHIFT(0, 65, u64, 0, true); | |
553 | TEST_ONE_SHIFT(0, 64, s64, 0, true); | |
554 | TEST_ONE_SHIFT(0, 65, s64, 0, true); | |
555 | ||
556 | kunit_info(test, "%d truncate shift tests finished\n", count); | |
557 | } | |
558 | ||
559 | static void shift_nonsense_test(struct kunit *test) | |
560 | { | |
561 | int count = 0; | |
562 | ||
d36b6ad2 | 563 | /* Nonsense: negative initial value. */ |
617f55e2 KC |
564 | TEST_ONE_SHIFT(-1, 0, s8, 0, true); |
565 | TEST_ONE_SHIFT(-1, 0, u8, 0, true); | |
566 | TEST_ONE_SHIFT(-5, 0, s16, 0, true); | |
567 | TEST_ONE_SHIFT(-5, 0, u16, 0, true); | |
568 | TEST_ONE_SHIFT(-10, 0, int, 0, true); | |
569 | TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true); | |
570 | TEST_ONE_SHIFT(-100, 0, s32, 0, true); | |
571 | TEST_ONE_SHIFT(-100, 0, u32, 0, true); | |
572 | TEST_ONE_SHIFT(-10000, 0, s64, 0, true); | |
573 | TEST_ONE_SHIFT(-10000, 0, u64, 0, true); | |
d36b6ad2 KC |
574 | |
575 | /* Nonsense: negative shift values. */ | |
617f55e2 KC |
576 | TEST_ONE_SHIFT(0, -5, s8, 0, true); |
577 | TEST_ONE_SHIFT(0, -5, u8, 0, true); | |
578 | TEST_ONE_SHIFT(0, -10, s16, 0, true); | |
579 | TEST_ONE_SHIFT(0, -10, u16, 0, true); | |
580 | TEST_ONE_SHIFT(0, -15, int, 0, true); | |
581 | TEST_ONE_SHIFT(0, -15, unsigned int, 0, true); | |
582 | TEST_ONE_SHIFT(0, -20, s32, 0, true); | |
583 | TEST_ONE_SHIFT(0, -20, u32, 0, true); | |
584 | TEST_ONE_SHIFT(0, -30, s64, 0, true); | |
585 | TEST_ONE_SHIFT(0, -30, u64, 0, true); | |
d36b6ad2 | 586 | |
d36b6ad2 KC |
587 | /* |
588 | * Corner case: for unsigned types, we fail when we've shifted | |
589 | * through the entire width of bits. For signed types, we might | |
590 | * want to match this behavior, but that would mean noticing if | |
591 | * we shift through all but the signed bit, and this is not | |
592 | * currently detected (but we'll notice an overflow into the | |
593 | * signed bit). So, for now, we will test this condition but | |
594 | * mark it as not expected to overflow. | |
595 | */ | |
617f55e2 KC |
596 | TEST_ONE_SHIFT(0, 7, s8, 0, false); |
597 | TEST_ONE_SHIFT(0, 15, s16, 0, false); | |
598 | TEST_ONE_SHIFT(0, 31, int, 0, false); | |
599 | TEST_ONE_SHIFT(0, 31, s32, 0, false); | |
600 | TEST_ONE_SHIFT(0, 63, s64, 0, false); | |
8e7c8ca6 | 601 | |
77974225 | 602 | kunit_info(test, "%d nonsense shift tests finished\n", count); |
d36b6ad2 | 603 | } |
77974225 | 604 | #undef TEST_ONE_SHIFT |
d36b6ad2 | 605 | |
ca90800a KC |
606 | /* |
607 | * Deal with the various forms of allocator arguments. See comments above | |
608 | * the DEFINE_TEST_ALLOC() instances for mapping of the "bits". | |
609 | */ | |
8e060c21 KC |
610 | #define alloc_GFP (GFP_KERNEL | __GFP_NOWARN) |
611 | #define alloc010(alloc, arg, sz) alloc(sz, alloc_GFP) | |
612 | #define alloc011(alloc, arg, sz) alloc(sz, alloc_GFP, NUMA_NO_NODE) | |
ca90800a KC |
613 | #define alloc000(alloc, arg, sz) alloc(sz) |
614 | #define alloc001(alloc, arg, sz) alloc(sz, NUMA_NO_NODE) | |
8e060c21 | 615 | #define alloc110(alloc, arg, sz) alloc(arg, sz, alloc_GFP) |
ca90800a KC |
616 | #define free0(free, arg, ptr) free(ptr) |
617 | #define free1(free, arg, ptr) free(arg, ptr) | |
618 | ||
8e060c21 KC |
619 | /* Wrap around to 16K */ |
620 | #define TEST_SIZE (5 * 4096) | |
ca90800a KC |
621 | |
622 | #define DEFINE_TEST_ALLOC(func, free_func, want_arg, want_gfp, want_node)\ | |
617f55e2 | 623 | static void test_ ## func (struct kunit *test, void *arg) \ |
ca90800a KC |
624 | { \ |
625 | volatile size_t a = TEST_SIZE; \ | |
626 | volatile size_t b = (SIZE_MAX / TEST_SIZE) + 1; \ | |
627 | void *ptr; \ | |
628 | \ | |
629 | /* Tiny allocation test. */ \ | |
630 | ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, 1);\ | |
617f55e2 KC |
631 | KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \ |
632 | #func " failed regular allocation?!\n"); \ | |
ca90800a KC |
633 | free ## want_arg (free_func, arg, ptr); \ |
634 | \ | |
635 | /* Wrapped allocation test. */ \ | |
636 | ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ | |
637 | a * b); \ | |
617f55e2 KC |
638 | KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, \ |
639 | #func " unexpectedly failed bad wrapping?!\n"); \ | |
ca90800a KC |
640 | free ## want_arg (free_func, arg, ptr); \ |
641 | \ | |
642 | /* Saturated allocation test. */ \ | |
643 | ptr = alloc ## want_arg ## want_gfp ## want_node (func, arg, \ | |
644 | array_size(a, b)); \ | |
645 | if (ptr) { \ | |
617f55e2 | 646 | KUNIT_FAIL(test, #func " missed saturation!\n"); \ |
ca90800a | 647 | free ## want_arg (free_func, arg, ptr); \ |
ca90800a | 648 | } \ |
ca90800a KC |
649 | } |
650 | ||
651 | /* | |
652 | * Allocator uses a trailing node argument --------+ (e.g. kmalloc_node()) | |
653 | * Allocator uses the gfp_t argument -----------+ | (e.g. kmalloc()) | |
654 | * Allocator uses a special leading argument + | | (e.g. devm_kmalloc()) | |
655 | * | | | | |
656 | */ | |
657 | DEFINE_TEST_ALLOC(kmalloc, kfree, 0, 1, 0); | |
658 | DEFINE_TEST_ALLOC(kmalloc_node, kfree, 0, 1, 1); | |
659 | DEFINE_TEST_ALLOC(kzalloc, kfree, 0, 1, 0); | |
660 | DEFINE_TEST_ALLOC(kzalloc_node, kfree, 0, 1, 1); | |
8e7c8ca6 | 661 | DEFINE_TEST_ALLOC(__vmalloc, vfree, 0, 1, 0); |
ca90800a KC |
662 | DEFINE_TEST_ALLOC(kvmalloc, kvfree, 0, 1, 0); |
663 | DEFINE_TEST_ALLOC(kvmalloc_node, kvfree, 0, 1, 1); | |
664 | DEFINE_TEST_ALLOC(kvzalloc, kvfree, 0, 1, 0); | |
665 | DEFINE_TEST_ALLOC(kvzalloc_node, kvfree, 0, 1, 1); | |
666 | DEFINE_TEST_ALLOC(devm_kmalloc, devm_kfree, 1, 1, 0); | |
667 | DEFINE_TEST_ALLOC(devm_kzalloc, devm_kfree, 1, 1, 0); | |
668 | ||
617f55e2 | 669 | static void overflow_allocation_test(struct kunit *test) |
ca90800a KC |
670 | { |
671 | const char device_name[] = "overflow-test"; | |
672 | struct device *dev; | |
8e7c8ca6 | 673 | int count = 0; |
ca90800a | 674 | |
617f55e2 | 675 | #define check_allocation_overflow(alloc) do { \ |
8e7c8ca6 | 676 | count++; \ |
617f55e2 KC |
677 | test_ ## alloc(test, dev); \ |
678 | } while (0) | |
8e7c8ca6 | 679 | |
ca90800a | 680 | /* Create dummy device for devm_kmalloc()-family tests. */ |
83701838 | 681 | dev = kunit_device_register(test, device_name); |
617f55e2 KC |
682 | KUNIT_ASSERT_FALSE_MSG(test, IS_ERR(dev), |
683 | "Cannot register test device\n"); | |
684 | ||
685 | check_allocation_overflow(kmalloc); | |
686 | check_allocation_overflow(kmalloc_node); | |
687 | check_allocation_overflow(kzalloc); | |
688 | check_allocation_overflow(kzalloc_node); | |
689 | check_allocation_overflow(__vmalloc); | |
690 | check_allocation_overflow(kvmalloc); | |
691 | check_allocation_overflow(kvmalloc_node); | |
692 | check_allocation_overflow(kvzalloc); | |
693 | check_allocation_overflow(kvzalloc_node); | |
694 | check_allocation_overflow(devm_kmalloc); | |
695 | check_allocation_overflow(devm_kzalloc); | |
ca90800a | 696 | |
617f55e2 | 697 | kunit_info(test, "%d allocation overflow tests finished\n", count); |
8e7c8ca6 | 698 | #undef check_allocation_overflow |
ca90800a KC |
699 | } |
700 | ||
e1be43d9 KC |
701 | struct __test_flex_array { |
702 | unsigned long flags; | |
703 | size_t count; | |
704 | unsigned long data[]; | |
705 | }; | |
706 | ||
617f55e2 | 707 | static void overflow_size_helpers_test(struct kunit *test) |
e1be43d9 | 708 | { |
230f6fa2 | 709 | /* Make sure struct_size() can be used in a constant expression. */ |
d67790dd | 710 | u8 ce_array[struct_size_t(struct __test_flex_array, data, 55)]; |
e1be43d9 KC |
711 | struct __test_flex_array *obj; |
712 | int count = 0; | |
e1be43d9 | 713 | int var; |
230f6fa2 KC |
714 | volatile int unconst = 0; |
715 | ||
716 | /* Verify constant expression against runtime version. */ | |
717 | var = 55; | |
718 | OPTIMIZER_HIDE_VAR(var); | |
617f55e2 | 719 | KUNIT_EXPECT_EQ(test, sizeof(ce_array), struct_size(obj, data, var)); |
e1be43d9 | 720 | |
617f55e2 KC |
721 | #define check_one_size_helper(expected, func, args...) do { \ |
722 | size_t _r = func(args); \ | |
723 | KUNIT_EXPECT_EQ_MSG(test, _r, expected, \ | |
724 | "expected " #func "(" #args ") to return %zu but got %zu instead\n", \ | |
725 | (size_t)(expected), _r); \ | |
e1be43d9 | 726 | count++; \ |
617f55e2 | 727 | } while (0) |
e1be43d9 KC |
728 | |
729 | var = 4; | |
617f55e2 KC |
730 | check_one_size_helper(20, size_mul, var++, 5); |
731 | check_one_size_helper(20, size_mul, 4, var++); | |
732 | check_one_size_helper(0, size_mul, 0, 3); | |
733 | check_one_size_helper(0, size_mul, 3, 0); | |
734 | check_one_size_helper(6, size_mul, 2, 3); | |
735 | check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 1); | |
736 | check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, 3); | |
737 | check_one_size_helper(SIZE_MAX, size_mul, SIZE_MAX, -3); | |
e1be43d9 KC |
738 | |
739 | var = 4; | |
617f55e2 KC |
740 | check_one_size_helper(9, size_add, var++, 5); |
741 | check_one_size_helper(9, size_add, 4, var++); | |
742 | check_one_size_helper(9, size_add, 9, 0); | |
743 | check_one_size_helper(9, size_add, 0, 9); | |
744 | check_one_size_helper(5, size_add, 2, 3); | |
745 | check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 1); | |
746 | check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, 3); | |
747 | check_one_size_helper(SIZE_MAX, size_add, SIZE_MAX, -3); | |
e1be43d9 KC |
748 | |
749 | var = 4; | |
617f55e2 KC |
750 | check_one_size_helper(1, size_sub, var--, 3); |
751 | check_one_size_helper(1, size_sub, 4, var--); | |
752 | check_one_size_helper(1, size_sub, 3, 2); | |
753 | check_one_size_helper(9, size_sub, 9, 0); | |
754 | check_one_size_helper(SIZE_MAX, size_sub, 9, -3); | |
755 | check_one_size_helper(SIZE_MAX, size_sub, 0, 9); | |
756 | check_one_size_helper(SIZE_MAX, size_sub, 2, 3); | |
757 | check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 0); | |
758 | check_one_size_helper(SIZE_MAX, size_sub, SIZE_MAX, 10); | |
759 | check_one_size_helper(SIZE_MAX, size_sub, 0, SIZE_MAX); | |
760 | check_one_size_helper(SIZE_MAX, size_sub, 14, SIZE_MAX); | |
761 | check_one_size_helper(SIZE_MAX - 2, size_sub, SIZE_MAX - 1, 1); | |
762 | check_one_size_helper(SIZE_MAX - 4, size_sub, SIZE_MAX - 1, 3); | |
763 | check_one_size_helper(1, size_sub, SIZE_MAX - 1, -3); | |
e1be43d9 KC |
764 | |
765 | var = 4; | |
617f55e2 KC |
766 | check_one_size_helper(4 * sizeof(*obj->data), |
767 | flex_array_size, obj, data, var++); | |
768 | check_one_size_helper(5 * sizeof(*obj->data), | |
769 | flex_array_size, obj, data, var++); | |
770 | check_one_size_helper(0, flex_array_size, obj, data, 0 + unconst); | |
771 | check_one_size_helper(sizeof(*obj->data), | |
772 | flex_array_size, obj, data, 1 + unconst); | |
773 | check_one_size_helper(7 * sizeof(*obj->data), | |
774 | flex_array_size, obj, data, 7 + unconst); | |
775 | check_one_size_helper(SIZE_MAX, | |
776 | flex_array_size, obj, data, -1 + unconst); | |
777 | check_one_size_helper(SIZE_MAX, | |
778 | flex_array_size, obj, data, SIZE_MAX - 4 + unconst); | |
e1be43d9 KC |
779 | |
780 | var = 4; | |
617f55e2 KC |
781 | check_one_size_helper(sizeof(*obj) + (4 * sizeof(*obj->data)), |
782 | struct_size, obj, data, var++); | |
783 | check_one_size_helper(sizeof(*obj) + (5 * sizeof(*obj->data)), | |
784 | struct_size, obj, data, var++); | |
785 | check_one_size_helper(sizeof(*obj), struct_size, obj, data, 0 + unconst); | |
786 | check_one_size_helper(sizeof(*obj) + sizeof(*obj->data), | |
787 | struct_size, obj, data, 1 + unconst); | |
788 | check_one_size_helper(SIZE_MAX, | |
789 | struct_size, obj, data, -3 + unconst); | |
790 | check_one_size_helper(SIZE_MAX, | |
791 | struct_size, obj, data, SIZE_MAX - 3 + unconst); | |
792 | ||
793 | kunit_info(test, "%d overflow size helper tests finished\n", count); | |
794 | #undef check_one_size_helper | |
e1be43d9 KC |
795 | } |
796 | ||
4b21d25b KC |
797 | static void overflows_type_test(struct kunit *test) |
798 | { | |
799 | int count = 0; | |
800 | unsigned int var; | |
801 | ||
802 | #define __TEST_OVERFLOWS_TYPE(func, arg1, arg2, of) do { \ | |
803 | bool __of = func(arg1, arg2); \ | |
804 | KUNIT_EXPECT_EQ_MSG(test, __of, of, \ | |
805 | "expected " #func "(" #arg1 ", " #arg2 " to%s overflow\n",\ | |
806 | of ? "" : " not"); \ | |
807 | count++; \ | |
808 | } while (0) | |
809 | ||
810 | /* Args are: first type, second type, value, overflow expected */ | |
811 | #define TEST_OVERFLOWS_TYPE(__t1, __t2, v, of) do { \ | |
812 | __t1 t1 = (v); \ | |
813 | __t2 t2; \ | |
814 | __TEST_OVERFLOWS_TYPE(__overflows_type, t1, t2, of); \ | |
815 | __TEST_OVERFLOWS_TYPE(__overflows_type, t1, __t2, of); \ | |
816 | __TEST_OVERFLOWS_TYPE(__overflows_type_constexpr, t1, t2, of); \ | |
817 | __TEST_OVERFLOWS_TYPE(__overflows_type_constexpr, t1, __t2, of);\ | |
818 | } while (0) | |
819 | ||
820 | TEST_OVERFLOWS_TYPE(u8, u8, U8_MAX, false); | |
821 | TEST_OVERFLOWS_TYPE(u8, u16, U8_MAX, false); | |
822 | TEST_OVERFLOWS_TYPE(u8, s8, U8_MAX, true); | |
823 | TEST_OVERFLOWS_TYPE(u8, s8, S8_MAX, false); | |
824 | TEST_OVERFLOWS_TYPE(u8, s8, (u8)S8_MAX + 1, true); | |
825 | TEST_OVERFLOWS_TYPE(u8, s16, U8_MAX, false); | |
826 | TEST_OVERFLOWS_TYPE(s8, u8, S8_MAX, false); | |
827 | TEST_OVERFLOWS_TYPE(s8, u8, -1, true); | |
828 | TEST_OVERFLOWS_TYPE(s8, u8, S8_MIN, true); | |
829 | TEST_OVERFLOWS_TYPE(s8, u16, S8_MAX, false); | |
830 | TEST_OVERFLOWS_TYPE(s8, u16, -1, true); | |
831 | TEST_OVERFLOWS_TYPE(s8, u16, S8_MIN, true); | |
832 | TEST_OVERFLOWS_TYPE(s8, u32, S8_MAX, false); | |
833 | TEST_OVERFLOWS_TYPE(s8, u32, -1, true); | |
834 | TEST_OVERFLOWS_TYPE(s8, u32, S8_MIN, true); | |
835 | #if BITS_PER_LONG == 64 | |
836 | TEST_OVERFLOWS_TYPE(s8, u64, S8_MAX, false); | |
837 | TEST_OVERFLOWS_TYPE(s8, u64, -1, true); | |
838 | TEST_OVERFLOWS_TYPE(s8, u64, S8_MIN, true); | |
839 | #endif | |
840 | TEST_OVERFLOWS_TYPE(s8, s8, S8_MAX, false); | |
841 | TEST_OVERFLOWS_TYPE(s8, s8, S8_MIN, false); | |
842 | TEST_OVERFLOWS_TYPE(s8, s16, S8_MAX, false); | |
843 | TEST_OVERFLOWS_TYPE(s8, s16, S8_MIN, false); | |
844 | TEST_OVERFLOWS_TYPE(u16, u8, U8_MAX, false); | |
845 | TEST_OVERFLOWS_TYPE(u16, u8, (u16)U8_MAX + 1, true); | |
846 | TEST_OVERFLOWS_TYPE(u16, u8, U16_MAX, true); | |
847 | TEST_OVERFLOWS_TYPE(u16, s8, S8_MAX, false); | |
848 | TEST_OVERFLOWS_TYPE(u16, s8, (u16)S8_MAX + 1, true); | |
849 | TEST_OVERFLOWS_TYPE(u16, s8, U16_MAX, true); | |
850 | TEST_OVERFLOWS_TYPE(u16, s16, S16_MAX, false); | |
851 | TEST_OVERFLOWS_TYPE(u16, s16, (u16)S16_MAX + 1, true); | |
852 | TEST_OVERFLOWS_TYPE(u16, s16, U16_MAX, true); | |
853 | TEST_OVERFLOWS_TYPE(u16, u32, U16_MAX, false); | |
854 | TEST_OVERFLOWS_TYPE(u16, s32, U16_MAX, false); | |
855 | TEST_OVERFLOWS_TYPE(s16, u8, U8_MAX, false); | |
856 | TEST_OVERFLOWS_TYPE(s16, u8, (s16)U8_MAX + 1, true); | |
857 | TEST_OVERFLOWS_TYPE(s16, u8, -1, true); | |
858 | TEST_OVERFLOWS_TYPE(s16, u8, S16_MIN, true); | |
859 | TEST_OVERFLOWS_TYPE(s16, u16, S16_MAX, false); | |
860 | TEST_OVERFLOWS_TYPE(s16, u16, -1, true); | |
861 | TEST_OVERFLOWS_TYPE(s16, u16, S16_MIN, true); | |
862 | TEST_OVERFLOWS_TYPE(s16, u32, S16_MAX, false); | |
863 | TEST_OVERFLOWS_TYPE(s16, u32, -1, true); | |
864 | TEST_OVERFLOWS_TYPE(s16, u32, S16_MIN, true); | |
865 | #if BITS_PER_LONG == 64 | |
866 | TEST_OVERFLOWS_TYPE(s16, u64, S16_MAX, false); | |
867 | TEST_OVERFLOWS_TYPE(s16, u64, -1, true); | |
868 | TEST_OVERFLOWS_TYPE(s16, u64, S16_MIN, true); | |
869 | #endif | |
870 | TEST_OVERFLOWS_TYPE(s16, s8, S8_MAX, false); | |
871 | TEST_OVERFLOWS_TYPE(s16, s8, S8_MIN, false); | |
872 | TEST_OVERFLOWS_TYPE(s16, s8, (s16)S8_MAX + 1, true); | |
873 | TEST_OVERFLOWS_TYPE(s16, s8, (s16)S8_MIN - 1, true); | |
874 | TEST_OVERFLOWS_TYPE(s16, s8, S16_MAX, true); | |
875 | TEST_OVERFLOWS_TYPE(s16, s8, S16_MIN, true); | |
876 | TEST_OVERFLOWS_TYPE(s16, s16, S16_MAX, false); | |
877 | TEST_OVERFLOWS_TYPE(s16, s16, S16_MIN, false); | |
878 | TEST_OVERFLOWS_TYPE(s16, s32, S16_MAX, false); | |
879 | TEST_OVERFLOWS_TYPE(s16, s32, S16_MIN, false); | |
880 | TEST_OVERFLOWS_TYPE(u32, u8, U8_MAX, false); | |
881 | TEST_OVERFLOWS_TYPE(u32, u8, (u32)U8_MAX + 1, true); | |
882 | TEST_OVERFLOWS_TYPE(u32, u8, U32_MAX, true); | |
883 | TEST_OVERFLOWS_TYPE(u32, s8, S8_MAX, false); | |
884 | TEST_OVERFLOWS_TYPE(u32, s8, (u32)S8_MAX + 1, true); | |
885 | TEST_OVERFLOWS_TYPE(u32, s8, U32_MAX, true); | |
886 | TEST_OVERFLOWS_TYPE(u32, u16, U16_MAX, false); | |
887 | TEST_OVERFLOWS_TYPE(u32, u16, U16_MAX + 1, true); | |
888 | TEST_OVERFLOWS_TYPE(u32, u16, U32_MAX, true); | |
889 | TEST_OVERFLOWS_TYPE(u32, s16, S16_MAX, false); | |
890 | TEST_OVERFLOWS_TYPE(u32, s16, (u32)S16_MAX + 1, true); | |
891 | TEST_OVERFLOWS_TYPE(u32, s16, U32_MAX, true); | |
892 | TEST_OVERFLOWS_TYPE(u32, u32, U32_MAX, false); | |
893 | TEST_OVERFLOWS_TYPE(u32, s32, S32_MAX, false); | |
894 | TEST_OVERFLOWS_TYPE(u32, s32, U32_MAX, true); | |
895 | TEST_OVERFLOWS_TYPE(u32, s32, (u32)S32_MAX + 1, true); | |
896 | #if BITS_PER_LONG == 64 | |
897 | TEST_OVERFLOWS_TYPE(u32, u64, U32_MAX, false); | |
898 | TEST_OVERFLOWS_TYPE(u32, s64, U32_MAX, false); | |
899 | #endif | |
900 | TEST_OVERFLOWS_TYPE(s32, u8, U8_MAX, false); | |
901 | TEST_OVERFLOWS_TYPE(s32, u8, (s32)U8_MAX + 1, true); | |
902 | TEST_OVERFLOWS_TYPE(s32, u16, S32_MAX, true); | |
903 | TEST_OVERFLOWS_TYPE(s32, u8, -1, true); | |
904 | TEST_OVERFLOWS_TYPE(s32, u8, S32_MIN, true); | |
905 | TEST_OVERFLOWS_TYPE(s32, u16, U16_MAX, false); | |
906 | TEST_OVERFLOWS_TYPE(s32, u16, (s32)U16_MAX + 1, true); | |
907 | TEST_OVERFLOWS_TYPE(s32, u16, S32_MAX, true); | |
908 | TEST_OVERFLOWS_TYPE(s32, u16, -1, true); | |
909 | TEST_OVERFLOWS_TYPE(s32, u16, S32_MIN, true); | |
910 | TEST_OVERFLOWS_TYPE(s32, u32, S32_MAX, false); | |
911 | TEST_OVERFLOWS_TYPE(s32, u32, -1, true); | |
912 | TEST_OVERFLOWS_TYPE(s32, u32, S32_MIN, true); | |
913 | #if BITS_PER_LONG == 64 | |
914 | TEST_OVERFLOWS_TYPE(s32, u64, S32_MAX, false); | |
915 | TEST_OVERFLOWS_TYPE(s32, u64, -1, true); | |
916 | TEST_OVERFLOWS_TYPE(s32, u64, S32_MIN, true); | |
917 | #endif | |
918 | TEST_OVERFLOWS_TYPE(s32, s8, S8_MAX, false); | |
919 | TEST_OVERFLOWS_TYPE(s32, s8, S8_MIN, false); | |
920 | TEST_OVERFLOWS_TYPE(s32, s8, (s32)S8_MAX + 1, true); | |
921 | TEST_OVERFLOWS_TYPE(s32, s8, (s32)S8_MIN - 1, true); | |
922 | TEST_OVERFLOWS_TYPE(s32, s8, S32_MAX, true); | |
923 | TEST_OVERFLOWS_TYPE(s32, s8, S32_MIN, true); | |
924 | TEST_OVERFLOWS_TYPE(s32, s16, S16_MAX, false); | |
925 | TEST_OVERFLOWS_TYPE(s32, s16, S16_MIN, false); | |
926 | TEST_OVERFLOWS_TYPE(s32, s16, (s32)S16_MAX + 1, true); | |
927 | TEST_OVERFLOWS_TYPE(s32, s16, (s32)S16_MIN - 1, true); | |
928 | TEST_OVERFLOWS_TYPE(s32, s16, S32_MAX, true); | |
929 | TEST_OVERFLOWS_TYPE(s32, s16, S32_MIN, true); | |
930 | TEST_OVERFLOWS_TYPE(s32, s32, S32_MAX, false); | |
931 | TEST_OVERFLOWS_TYPE(s32, s32, S32_MIN, false); | |
932 | #if BITS_PER_LONG == 64 | |
933 | TEST_OVERFLOWS_TYPE(s32, s64, S32_MAX, false); | |
934 | TEST_OVERFLOWS_TYPE(s32, s64, S32_MIN, false); | |
935 | TEST_OVERFLOWS_TYPE(u64, u8, U64_MAX, true); | |
936 | TEST_OVERFLOWS_TYPE(u64, u8, U8_MAX, false); | |
937 | TEST_OVERFLOWS_TYPE(u64, u8, (u64)U8_MAX + 1, true); | |
938 | TEST_OVERFLOWS_TYPE(u64, u16, U64_MAX, true); | |
939 | TEST_OVERFLOWS_TYPE(u64, u16, U16_MAX, false); | |
940 | TEST_OVERFLOWS_TYPE(u64, u16, (u64)U16_MAX + 1, true); | |
941 | TEST_OVERFLOWS_TYPE(u64, u32, U64_MAX, true); | |
942 | TEST_OVERFLOWS_TYPE(u64, u32, U32_MAX, false); | |
943 | TEST_OVERFLOWS_TYPE(u64, u32, (u64)U32_MAX + 1, true); | |
944 | TEST_OVERFLOWS_TYPE(u64, u64, U64_MAX, false); | |
945 | TEST_OVERFLOWS_TYPE(u64, s8, S8_MAX, false); | |
946 | TEST_OVERFLOWS_TYPE(u64, s8, (u64)S8_MAX + 1, true); | |
947 | TEST_OVERFLOWS_TYPE(u64, s8, U64_MAX, true); | |
948 | TEST_OVERFLOWS_TYPE(u64, s16, S16_MAX, false); | |
949 | TEST_OVERFLOWS_TYPE(u64, s16, (u64)S16_MAX + 1, true); | |
950 | TEST_OVERFLOWS_TYPE(u64, s16, U64_MAX, true); | |
951 | TEST_OVERFLOWS_TYPE(u64, s32, S32_MAX, false); | |
952 | TEST_OVERFLOWS_TYPE(u64, s32, (u64)S32_MAX + 1, true); | |
953 | TEST_OVERFLOWS_TYPE(u64, s32, U64_MAX, true); | |
954 | TEST_OVERFLOWS_TYPE(u64, s64, S64_MAX, false); | |
955 | TEST_OVERFLOWS_TYPE(u64, s64, U64_MAX, true); | |
956 | TEST_OVERFLOWS_TYPE(u64, s64, (u64)S64_MAX + 1, true); | |
957 | TEST_OVERFLOWS_TYPE(s64, u8, S64_MAX, true); | |
958 | TEST_OVERFLOWS_TYPE(s64, u8, S64_MIN, true); | |
959 | TEST_OVERFLOWS_TYPE(s64, u8, -1, true); | |
960 | TEST_OVERFLOWS_TYPE(s64, u8, U8_MAX, false); | |
961 | TEST_OVERFLOWS_TYPE(s64, u8, (s64)U8_MAX + 1, true); | |
962 | TEST_OVERFLOWS_TYPE(s64, u16, S64_MAX, true); | |
963 | TEST_OVERFLOWS_TYPE(s64, u16, S64_MIN, true); | |
964 | TEST_OVERFLOWS_TYPE(s64, u16, -1, true); | |
965 | TEST_OVERFLOWS_TYPE(s64, u16, U16_MAX, false); | |
966 | TEST_OVERFLOWS_TYPE(s64, u16, (s64)U16_MAX + 1, true); | |
967 | TEST_OVERFLOWS_TYPE(s64, u32, S64_MAX, true); | |
968 | TEST_OVERFLOWS_TYPE(s64, u32, S64_MIN, true); | |
969 | TEST_OVERFLOWS_TYPE(s64, u32, -1, true); | |
970 | TEST_OVERFLOWS_TYPE(s64, u32, U32_MAX, false); | |
971 | TEST_OVERFLOWS_TYPE(s64, u32, (s64)U32_MAX + 1, true); | |
972 | TEST_OVERFLOWS_TYPE(s64, u64, S64_MAX, false); | |
973 | TEST_OVERFLOWS_TYPE(s64, u64, S64_MIN, true); | |
974 | TEST_OVERFLOWS_TYPE(s64, u64, -1, true); | |
975 | TEST_OVERFLOWS_TYPE(s64, s8, S8_MAX, false); | |
976 | TEST_OVERFLOWS_TYPE(s64, s8, S8_MIN, false); | |
977 | TEST_OVERFLOWS_TYPE(s64, s8, (s64)S8_MAX + 1, true); | |
978 | TEST_OVERFLOWS_TYPE(s64, s8, (s64)S8_MIN - 1, true); | |
979 | TEST_OVERFLOWS_TYPE(s64, s8, S64_MAX, true); | |
980 | TEST_OVERFLOWS_TYPE(s64, s16, S16_MAX, false); | |
981 | TEST_OVERFLOWS_TYPE(s64, s16, S16_MIN, false); | |
982 | TEST_OVERFLOWS_TYPE(s64, s16, (s64)S16_MAX + 1, true); | |
983 | TEST_OVERFLOWS_TYPE(s64, s16, (s64)S16_MIN - 1, true); | |
984 | TEST_OVERFLOWS_TYPE(s64, s16, S64_MAX, true); | |
985 | TEST_OVERFLOWS_TYPE(s64, s32, S32_MAX, false); | |
986 | TEST_OVERFLOWS_TYPE(s64, s32, S32_MIN, false); | |
987 | TEST_OVERFLOWS_TYPE(s64, s32, (s64)S32_MAX + 1, true); | |
988 | TEST_OVERFLOWS_TYPE(s64, s32, (s64)S32_MIN - 1, true); | |
989 | TEST_OVERFLOWS_TYPE(s64, s32, S64_MAX, true); | |
990 | TEST_OVERFLOWS_TYPE(s64, s64, S64_MAX, false); | |
991 | TEST_OVERFLOWS_TYPE(s64, s64, S64_MIN, false); | |
992 | #endif | |
993 | ||
994 | /* Check for macro side-effects. */ | |
995 | var = INT_MAX - 1; | |
996 | __TEST_OVERFLOWS_TYPE(__overflows_type, var++, int, false); | |
997 | __TEST_OVERFLOWS_TYPE(__overflows_type, var++, int, false); | |
998 | __TEST_OVERFLOWS_TYPE(__overflows_type, var++, int, true); | |
999 | var = INT_MAX - 1; | |
1000 | __TEST_OVERFLOWS_TYPE(overflows_type, var++, int, false); | |
1001 | __TEST_OVERFLOWS_TYPE(overflows_type, var++, int, false); | |
1002 | __TEST_OVERFLOWS_TYPE(overflows_type, var++, int, true); | |
1003 | ||
1004 | kunit_info(test, "%d overflows_type() tests finished\n", count); | |
1005 | #undef TEST_OVERFLOWS_TYPE | |
1006 | #undef __TEST_OVERFLOWS_TYPE | |
1007 | } | |
1008 | ||
1009 | static void same_type_test(struct kunit *test) | |
1010 | { | |
1011 | int count = 0; | |
1012 | int var; | |
1013 | ||
1014 | #define TEST_SAME_TYPE(t1, t2, same) do { \ | |
1015 | typeof(t1) __t1h = type_max(t1); \ | |
1016 | typeof(t1) __t1l = type_min(t1); \ | |
1017 | typeof(t2) __t2h = type_max(t2); \ | |
1018 | typeof(t2) __t2l = type_min(t2); \ | |
1019 | KUNIT_EXPECT_EQ(test, true, __same_type(t1, __t1h)); \ | |
1020 | KUNIT_EXPECT_EQ(test, true, __same_type(t1, __t1l)); \ | |
1021 | KUNIT_EXPECT_EQ(test, true, __same_type(__t1h, t1)); \ | |
1022 | KUNIT_EXPECT_EQ(test, true, __same_type(__t1l, t1)); \ | |
1023 | KUNIT_EXPECT_EQ(test, true, __same_type(t2, __t2h)); \ | |
1024 | KUNIT_EXPECT_EQ(test, true, __same_type(t2, __t2l)); \ | |
1025 | KUNIT_EXPECT_EQ(test, true, __same_type(__t2h, t2)); \ | |
1026 | KUNIT_EXPECT_EQ(test, true, __same_type(__t2l, t2)); \ | |
1027 | KUNIT_EXPECT_EQ(test, same, __same_type(t1, t2)); \ | |
1028 | KUNIT_EXPECT_EQ(test, same, __same_type(t2, __t1h)); \ | |
1029 | KUNIT_EXPECT_EQ(test, same, __same_type(t2, __t1l)); \ | |
1030 | KUNIT_EXPECT_EQ(test, same, __same_type(__t1h, t2)); \ | |
1031 | KUNIT_EXPECT_EQ(test, same, __same_type(__t1l, t2)); \ | |
1032 | KUNIT_EXPECT_EQ(test, same, __same_type(t1, __t2h)); \ | |
1033 | KUNIT_EXPECT_EQ(test, same, __same_type(t1, __t2l)); \ | |
1034 | KUNIT_EXPECT_EQ(test, same, __same_type(__t2h, t1)); \ | |
1035 | KUNIT_EXPECT_EQ(test, same, __same_type(__t2l, t1)); \ | |
1036 | } while (0) | |
1037 | ||
1038 | #if BITS_PER_LONG == 64 | |
1039 | # define TEST_SAME_TYPE64(base, t, m) TEST_SAME_TYPE(base, t, m) | |
1040 | #else | |
1041 | # define TEST_SAME_TYPE64(base, t, m) do { } while (0) | |
1042 | #endif | |
1043 | ||
1044 | #define TEST_TYPE_SETS(base, mu8, mu16, mu32, ms8, ms16, ms32, mu64, ms64) \ | |
1045 | do { \ | |
1046 | TEST_SAME_TYPE(base, u8, mu8); \ | |
1047 | TEST_SAME_TYPE(base, u16, mu16); \ | |
1048 | TEST_SAME_TYPE(base, u32, mu32); \ | |
1049 | TEST_SAME_TYPE(base, s8, ms8); \ | |
1050 | TEST_SAME_TYPE(base, s16, ms16); \ | |
1051 | TEST_SAME_TYPE(base, s32, ms32); \ | |
1052 | TEST_SAME_TYPE64(base, u64, mu64); \ | |
1053 | TEST_SAME_TYPE64(base, s64, ms64); \ | |
1054 | } while (0) | |
1055 | ||
1056 | TEST_TYPE_SETS(u8, true, false, false, false, false, false, false, false); | |
1057 | TEST_TYPE_SETS(u16, false, true, false, false, false, false, false, false); | |
1058 | TEST_TYPE_SETS(u32, false, false, true, false, false, false, false, false); | |
1059 | TEST_TYPE_SETS(s8, false, false, false, true, false, false, false, false); | |
1060 | TEST_TYPE_SETS(s16, false, false, false, false, true, false, false, false); | |
1061 | TEST_TYPE_SETS(s32, false, false, false, false, false, true, false, false); | |
1062 | #if BITS_PER_LONG == 64 | |
1063 | TEST_TYPE_SETS(u64, false, false, false, false, false, false, true, false); | |
1064 | TEST_TYPE_SETS(s64, false, false, false, false, false, false, false, true); | |
1065 | #endif | |
1066 | ||
1067 | /* Check for macro side-effects. */ | |
1068 | var = 4; | |
1069 | KUNIT_EXPECT_EQ(test, var, 4); | |
1070 | KUNIT_EXPECT_TRUE(test, __same_type(var++, int)); | |
1071 | KUNIT_EXPECT_EQ(test, var, 4); | |
1072 | KUNIT_EXPECT_TRUE(test, __same_type(int, var++)); | |
1073 | KUNIT_EXPECT_EQ(test, var, 4); | |
1074 | KUNIT_EXPECT_TRUE(test, __same_type(var++, var++)); | |
1075 | KUNIT_EXPECT_EQ(test, var, 4); | |
1076 | ||
1077 | kunit_info(test, "%d __same_type() tests finished\n", count); | |
1078 | ||
1079 | #undef TEST_TYPE_SETS | |
1080 | #undef TEST_SAME_TYPE64 | |
1081 | #undef TEST_SAME_TYPE | |
1082 | } | |
1083 | ||
1084 | static void castable_to_type_test(struct kunit *test) | |
1085 | { | |
1086 | int count = 0; | |
1087 | ||
1088 | #define TEST_CASTABLE_TO_TYPE(arg1, arg2, pass) do { \ | |
1089 | bool __pass = castable_to_type(arg1, arg2); \ | |
1090 | KUNIT_EXPECT_EQ_MSG(test, __pass, pass, \ | |
1091 | "expected castable_to_type(" #arg1 ", " #arg2 ") to%s pass\n",\ | |
1092 | pass ? "" : " not"); \ | |
1093 | count++; \ | |
1094 | } while (0) | |
1095 | ||
1096 | TEST_CASTABLE_TO_TYPE(16, u8, true); | |
1097 | TEST_CASTABLE_TO_TYPE(16, u16, true); | |
1098 | TEST_CASTABLE_TO_TYPE(16, u32, true); | |
1099 | TEST_CASTABLE_TO_TYPE(16, s8, true); | |
1100 | TEST_CASTABLE_TO_TYPE(16, s16, true); | |
1101 | TEST_CASTABLE_TO_TYPE(16, s32, true); | |
1102 | TEST_CASTABLE_TO_TYPE(-16, s8, true); | |
1103 | TEST_CASTABLE_TO_TYPE(-16, s16, true); | |
1104 | TEST_CASTABLE_TO_TYPE(-16, s32, true); | |
1105 | #if BITS_PER_LONG == 64 | |
1106 | TEST_CASTABLE_TO_TYPE(16, u64, true); | |
1107 | TEST_CASTABLE_TO_TYPE(-16, s64, true); | |
1108 | #endif | |
1109 | ||
1110 | #define TEST_CASTABLE_TO_TYPE_VAR(width) do { \ | |
1111 | u ## width u ## width ## var = 0; \ | |
1112 | s ## width s ## width ## var = 0; \ | |
1113 | \ | |
1114 | /* Constant expressions that fit types. */ \ | |
1115 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), u ## width, true); \ | |
1116 | TEST_CASTABLE_TO_TYPE(type_min(u ## width), u ## width, true); \ | |
1117 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), u ## width ## var, true); \ | |
1118 | TEST_CASTABLE_TO_TYPE(type_min(u ## width), u ## width ## var, true); \ | |
1119 | TEST_CASTABLE_TO_TYPE(type_max(s ## width), s ## width, true); \ | |
1120 | TEST_CASTABLE_TO_TYPE(type_min(s ## width), s ## width, true); \ | |
1121 | TEST_CASTABLE_TO_TYPE(type_max(s ## width), s ## width ## var, true); \ | |
1122 | TEST_CASTABLE_TO_TYPE(type_min(u ## width), s ## width ## var, true); \ | |
1123 | /* Constant expressions that do not fit types. */ \ | |
1124 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), s ## width, false); \ | |
1125 | TEST_CASTABLE_TO_TYPE(type_max(u ## width), s ## width ## var, false); \ | |
1126 | TEST_CASTABLE_TO_TYPE(type_min(s ## width), u ## width, false); \ | |
1127 | TEST_CASTABLE_TO_TYPE(type_min(s ## width), u ## width ## var, false); \ | |
1128 | /* Non-constant expression with mismatched type. */ \ | |
1129 | TEST_CASTABLE_TO_TYPE(s ## width ## var, u ## width, false); \ | |
1130 | TEST_CASTABLE_TO_TYPE(u ## width ## var, s ## width, false); \ | |
1131 | } while (0) | |
1132 | ||
1133 | #define TEST_CASTABLE_TO_TYPE_RANGE(width) do { \ | |
1134 | unsigned long big = U ## width ## _MAX; \ | |
1135 | signed long small = S ## width ## _MIN; \ | |
1136 | u ## width u ## width ## var = 0; \ | |
1137 | s ## width s ## width ## var = 0; \ | |
1138 | \ | |
1139 | /* Constant expression in range. */ \ | |
1140 | TEST_CASTABLE_TO_TYPE(U ## width ## _MAX, u ## width, true); \ | |
1141 | TEST_CASTABLE_TO_TYPE(U ## width ## _MAX, u ## width ## var, true); \ | |
1142 | TEST_CASTABLE_TO_TYPE(S ## width ## _MIN, s ## width, true); \ | |
1143 | TEST_CASTABLE_TO_TYPE(S ## width ## _MIN, s ## width ## var, true); \ | |
1144 | /* Constant expression out of range. */ \ | |
1145 | TEST_CASTABLE_TO_TYPE((unsigned long)U ## width ## _MAX + 1, u ## width, false); \ | |
1146 | TEST_CASTABLE_TO_TYPE((unsigned long)U ## width ## _MAX + 1, u ## width ## var, false); \ | |
1147 | TEST_CASTABLE_TO_TYPE((signed long)S ## width ## _MIN - 1, s ## width, false); \ | |
1148 | TEST_CASTABLE_TO_TYPE((signed long)S ## width ## _MIN - 1, s ## width ## var, false); \ | |
1149 | /* Non-constant expression with mismatched type. */ \ | |
1150 | TEST_CASTABLE_TO_TYPE(big, u ## width, false); \ | |
1151 | TEST_CASTABLE_TO_TYPE(big, u ## width ## var, false); \ | |
1152 | TEST_CASTABLE_TO_TYPE(small, s ## width, false); \ | |
1153 | TEST_CASTABLE_TO_TYPE(small, s ## width ## var, false); \ | |
1154 | } while (0) | |
1155 | ||
1156 | TEST_CASTABLE_TO_TYPE_VAR(8); | |
1157 | TEST_CASTABLE_TO_TYPE_VAR(16); | |
1158 | TEST_CASTABLE_TO_TYPE_VAR(32); | |
1159 | #if BITS_PER_LONG == 64 | |
1160 | TEST_CASTABLE_TO_TYPE_VAR(64); | |
1161 | #endif | |
1162 | ||
1163 | TEST_CASTABLE_TO_TYPE_RANGE(8); | |
1164 | TEST_CASTABLE_TO_TYPE_RANGE(16); | |
1165 | #if BITS_PER_LONG == 64 | |
1166 | TEST_CASTABLE_TO_TYPE_RANGE(32); | |
1167 | #endif | |
1168 | kunit_info(test, "%d castable_to_type() tests finished\n", count); | |
1169 | ||
1170 | #undef TEST_CASTABLE_TO_TYPE_RANGE | |
1171 | #undef TEST_CASTABLE_TO_TYPE_VAR | |
1172 | #undef TEST_CASTABLE_TO_TYPE | |
1173 | } | |
1174 | ||
d8e45f29 KC |
1175 | struct foo { |
1176 | int a; | |
1177 | u32 counter; | |
1178 | s16 array[] __counted_by(counter); | |
1179 | }; | |
1180 | ||
1181 | static void DEFINE_FLEX_test(struct kunit *test) | |
1182 | { | |
1183 | DEFINE_RAW_FLEX(struct foo, two, array, 2); | |
1184 | DEFINE_FLEX(struct foo, eight, array, counter, 8); | |
1185 | DEFINE_FLEX(struct foo, empty, array, counter, 0); | |
1186 | ||
1187 | KUNIT_EXPECT_EQ(test, __struct_size(two), | |
1188 | sizeof(struct foo) + sizeof(s16) + sizeof(s16)); | |
1189 | KUNIT_EXPECT_EQ(test, __struct_size(eight), 24); | |
1190 | KUNIT_EXPECT_EQ(test, __struct_size(empty), sizeof(struct foo)); | |
1191 | } | |
1192 | ||
617f55e2 | 1193 | static struct kunit_case overflow_test_cases[] = { |
d219d2a9 KC |
1194 | KUNIT_CASE(u8_u8__u8_overflow_test), |
1195 | KUNIT_CASE(s8_s8__s8_overflow_test), | |
1196 | KUNIT_CASE(u16_u16__u16_overflow_test), | |
1197 | KUNIT_CASE(s16_s16__s16_overflow_test), | |
1198 | KUNIT_CASE(u32_u32__u32_overflow_test), | |
1199 | KUNIT_CASE(s32_s32__s32_overflow_test), | |
d219d2a9 KC |
1200 | KUNIT_CASE(u64_u64__u64_overflow_test), |
1201 | KUNIT_CASE(s64_s64__s64_overflow_test), | |
d219d2a9 | 1202 | KUNIT_CASE(u32_u32__int_overflow_test), |
0e5b9f25 | 1203 | KUNIT_CASE(u32_u32__u8_overflow_test), |
d219d2a9 KC |
1204 | KUNIT_CASE(u8_u8__int_overflow_test), |
1205 | KUNIT_CASE(int_int__u8_overflow_test), | |
77974225 KC |
1206 | KUNIT_CASE(shift_sane_test), |
1207 | KUNIT_CASE(shift_overflow_test), | |
1208 | KUNIT_CASE(shift_truncate_test), | |
1209 | KUNIT_CASE(shift_nonsense_test), | |
617f55e2 KC |
1210 | KUNIT_CASE(overflow_allocation_test), |
1211 | KUNIT_CASE(overflow_size_helpers_test), | |
4b21d25b KC |
1212 | KUNIT_CASE(overflows_type_test), |
1213 | KUNIT_CASE(same_type_test), | |
1214 | KUNIT_CASE(castable_to_type_test), | |
d8e45f29 | 1215 | KUNIT_CASE(DEFINE_FLEX_test), |
617f55e2 KC |
1216 | {} |
1217 | }; | |
455a35a6 | 1218 | |
617f55e2 KC |
1219 | static struct kunit_suite overflow_test_suite = { |
1220 | .name = "overflow", | |
1221 | .test_cases = overflow_test_cases, | |
1222 | }; | |
455a35a6 | 1223 | |
617f55e2 | 1224 | kunit_test_suite(overflow_test_suite); |
455a35a6 | 1225 | |
455a35a6 | 1226 | MODULE_LICENSE("Dual MIT/GPL"); |