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Date: Tue, 30 Aug 2022 18:54:35 +0800
From: kernel test robot <lkp@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Vitor Massaru Iha <vitor@...saru.org>,
Daniel Latypov <dlatypov@...gle.com>,
David Gow <davidgow@...gle.com>
Subject: lib/overflow_kunit.c:451:1: warning: the frame size of 12656 bytes
is larger than 2048 bytes
Hi Kees,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: dcf8e5633e2e69ad60b730ab5905608b756a032f
commit: 617f55e20743fc50c989b498f9dee289eb644cfd lib: overflow: Convert to Kunit
date: 6 months ago
config: i386-buildonly-randconfig-r002-20220829 (https://download.01.org/0day-ci/archive/20220830/202208301850.iuv9VwA8-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=617f55e20743fc50c989b498f9dee289eb644cfd
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 617f55e20743fc50c989b498f9dee289eb644cfd
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
lib/overflow_kunit.c:191:19: warning: 's64_tests' defined but not used [-Wunused-const-variable=]
191 | DEFINE_TEST_ARRAY(s64) = {
| ^~~
lib/overflow_kunit.c:24:11: note: in definition of macro 'DEFINE_TEST_ARRAY'
24 | } t ## _tests[]
| ^
lib/overflow_kunit.c:94:19: warning: 'u64_tests' defined but not used [-Wunused-const-variable=]
94 | DEFINE_TEST_ARRAY(u64) = {
| ^~~
lib/overflow_kunit.c:24:11: note: in definition of macro 'DEFINE_TEST_ARRAY'
24 | } t ## _tests[]
| ^
lib/overflow_kunit.c: In function 'overflow_shift_test':
>> lib/overflow_kunit.c:451:1: warning: the frame size of 12656 bytes is larger than 2048 bytes [-Wframe-larger-than=]
451 | }
| ^
lib/overflow_kunit.c: In function 'overflow_size_helpers_test':
lib/overflow_kunit.c:644:1: warning: the frame size of 2468 bytes is larger than 2048 bytes [-Wframe-larger-than=]
644 | }
| ^
vim +451 lib/overflow_kunit.c
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 289
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 290 /* Sane shifts. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 291 TEST_ONE_SHIFT(1, 0, u8, 1 << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 292 TEST_ONE_SHIFT(1, 4, u8, 1 << 4, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 293 TEST_ONE_SHIFT(1, 7, u8, 1 << 7, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 294 TEST_ONE_SHIFT(0xF, 4, u8, 0xF << 4, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 295 TEST_ONE_SHIFT(1, 0, u16, 1 << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 296 TEST_ONE_SHIFT(1, 10, u16, 1 << 10, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 297 TEST_ONE_SHIFT(1, 15, u16, 1 << 15, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 298 TEST_ONE_SHIFT(0xFF, 8, u16, 0xFF << 8, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 299 TEST_ONE_SHIFT(1, 0, int, 1 << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 300 TEST_ONE_SHIFT(1, 16, int, 1 << 16, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 301 TEST_ONE_SHIFT(1, 30, int, 1 << 30, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 302 TEST_ONE_SHIFT(1, 0, s32, 1 << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 303 TEST_ONE_SHIFT(1, 16, s32, 1 << 16, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 304 TEST_ONE_SHIFT(1, 30, s32, 1 << 30, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 305 TEST_ONE_SHIFT(1, 0, unsigned int, 1U << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 306 TEST_ONE_SHIFT(1, 20, unsigned int, 1U << 20, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 307 TEST_ONE_SHIFT(1, 31, unsigned int, 1U << 31, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 308 TEST_ONE_SHIFT(0xFFFFU, 16, unsigned int, 0xFFFFU << 16, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 309 TEST_ONE_SHIFT(1, 0, u32, 1U << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 310 TEST_ONE_SHIFT(1, 20, u32, 1U << 20, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 311 TEST_ONE_SHIFT(1, 31, u32, 1U << 31, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 312 TEST_ONE_SHIFT(0xFFFFU, 16, u32, 0xFFFFU << 16, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 313 TEST_ONE_SHIFT(1, 0, u64, 1ULL << 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 314 TEST_ONE_SHIFT(1, 40, u64, 1ULL << 40, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 315 TEST_ONE_SHIFT(1, 63, u64, 1ULL << 63, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 316 TEST_ONE_SHIFT(0xFFFFFFFFULL, 32, u64, 0xFFFFFFFFULL << 32, false);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 317
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 318 /* Sane shift: start and end with 0, without a too-wide shift. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 319 TEST_ONE_SHIFT(0, 7, u8, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 320 TEST_ONE_SHIFT(0, 15, u16, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 321 TEST_ONE_SHIFT(0, 31, unsigned int, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 322 TEST_ONE_SHIFT(0, 31, u32, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 323 TEST_ONE_SHIFT(0, 63, u64, 0, false);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 324
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 325 /* Sane shift: start and end with 0, without reaching signed bit. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 326 TEST_ONE_SHIFT(0, 6, s8, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 327 TEST_ONE_SHIFT(0, 14, s16, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 328 TEST_ONE_SHIFT(0, 30, int, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 329 TEST_ONE_SHIFT(0, 30, s32, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 330 TEST_ONE_SHIFT(0, 62, s64, 0, false);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 331
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 332 /* Overflow: shifted the bit off the end. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 333 TEST_ONE_SHIFT(1, 8, u8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 334 TEST_ONE_SHIFT(1, 16, u16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 335 TEST_ONE_SHIFT(1, 32, unsigned int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 336 TEST_ONE_SHIFT(1, 32, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 337 TEST_ONE_SHIFT(1, 64, u64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 338
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 339 /* Overflow: shifted into the signed bit. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 340 TEST_ONE_SHIFT(1, 7, s8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 341 TEST_ONE_SHIFT(1, 15, s16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 342 TEST_ONE_SHIFT(1, 31, int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 343 TEST_ONE_SHIFT(1, 31, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 344 TEST_ONE_SHIFT(1, 63, s64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 345
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 346 /* Overflow: high bit falls off unsigned types. */
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 347 /* 10010110 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 348 TEST_ONE_SHIFT(150, 1, u8, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 349 /* 1000100010010110 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 350 TEST_ONE_SHIFT(34966, 1, u16, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 351 /* 10000100000010001000100010010110 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 352 TEST_ONE_SHIFT(2215151766U, 1, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 353 TEST_ONE_SHIFT(2215151766U, 1, unsigned int, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 354 /* 1000001000010000010000000100000010000100000010001000100010010110 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 355 TEST_ONE_SHIFT(9372061470395238550ULL, 1, u64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 356
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 357 /* Overflow: bit shifted into signed bit on signed types. */
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 358 /* 01001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 359 TEST_ONE_SHIFT(75, 1, s8, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 360 /* 0100010001001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 361 TEST_ONE_SHIFT(17483, 1, s16, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 362 /* 01000010000001000100010001001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 363 TEST_ONE_SHIFT(1107575883, 1, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 364 TEST_ONE_SHIFT(1107575883, 1, int, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 365 /* 0100000100001000001000000010000001000010000001000100010001001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 366 TEST_ONE_SHIFT(4686030735197619275LL, 1, s64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 367
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 368 /* Overflow: bit shifted past signed bit on signed types. */
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 369 /* 01001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 370 TEST_ONE_SHIFT(75, 2, s8, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 371 /* 0100010001001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 372 TEST_ONE_SHIFT(17483, 2, s16, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 373 /* 01000010000001000100010001001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 374 TEST_ONE_SHIFT(1107575883, 2, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 375 TEST_ONE_SHIFT(1107575883, 2, int, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 376 /* 0100000100001000001000000010000001000010000001000100010001001011 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 377 TEST_ONE_SHIFT(4686030735197619275LL, 2, s64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 378
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 379 /* Overflow: values larger than destination type. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 380 TEST_ONE_SHIFT(0x100, 0, u8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 381 TEST_ONE_SHIFT(0xFF, 0, s8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 382 TEST_ONE_SHIFT(0x10000U, 0, u16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 383 TEST_ONE_SHIFT(0xFFFFU, 0, s16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 384 TEST_ONE_SHIFT(0x100000000ULL, 0, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 385 TEST_ONE_SHIFT(0x100000000ULL, 0, unsigned int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 386 TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 387 TEST_ONE_SHIFT(0xFFFFFFFFUL, 0, int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 388 TEST_ONE_SHIFT(0xFFFFFFFFFFFFFFFFULL, 0, s64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 389
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 390 /* Nonsense: negative initial value. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 391 TEST_ONE_SHIFT(-1, 0, s8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 392 TEST_ONE_SHIFT(-1, 0, u8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 393 TEST_ONE_SHIFT(-5, 0, s16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 394 TEST_ONE_SHIFT(-5, 0, u16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 395 TEST_ONE_SHIFT(-10, 0, int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 396 TEST_ONE_SHIFT(-10, 0, unsigned int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 397 TEST_ONE_SHIFT(-100, 0, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 398 TEST_ONE_SHIFT(-100, 0, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 399 TEST_ONE_SHIFT(-10000, 0, s64, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 400 TEST_ONE_SHIFT(-10000, 0, u64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 401
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 402 /* Nonsense: negative shift values. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 403 TEST_ONE_SHIFT(0, -5, s8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 404 TEST_ONE_SHIFT(0, -5, u8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 405 TEST_ONE_SHIFT(0, -10, s16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 406 TEST_ONE_SHIFT(0, -10, u16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 407 TEST_ONE_SHIFT(0, -15, int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 408 TEST_ONE_SHIFT(0, -15, unsigned int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 409 TEST_ONE_SHIFT(0, -20, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 410 TEST_ONE_SHIFT(0, -20, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 411 TEST_ONE_SHIFT(0, -30, s64, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 412 TEST_ONE_SHIFT(0, -30, u64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 413
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 414 /* Overflow: shifted at or beyond entire type's bit width. */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 415 TEST_ONE_SHIFT(0, 8, u8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 416 TEST_ONE_SHIFT(0, 9, u8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 417 TEST_ONE_SHIFT(0, 8, s8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 418 TEST_ONE_SHIFT(0, 9, s8, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 419 TEST_ONE_SHIFT(0, 16, u16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 420 TEST_ONE_SHIFT(0, 17, u16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 421 TEST_ONE_SHIFT(0, 16, s16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 422 TEST_ONE_SHIFT(0, 17, s16, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 423 TEST_ONE_SHIFT(0, 32, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 424 TEST_ONE_SHIFT(0, 33, u32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 425 TEST_ONE_SHIFT(0, 32, int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 426 TEST_ONE_SHIFT(0, 33, int, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 427 TEST_ONE_SHIFT(0, 32, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 428 TEST_ONE_SHIFT(0, 33, s32, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 429 TEST_ONE_SHIFT(0, 64, u64, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 430 TEST_ONE_SHIFT(0, 65, u64, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 431 TEST_ONE_SHIFT(0, 64, s64, 0, true);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 432 TEST_ONE_SHIFT(0, 65, s64, 0, true);
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 433
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 434 /*
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 435 * Corner case: for unsigned types, we fail when we've shifted
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 436 * through the entire width of bits. For signed types, we might
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 437 * want to match this behavior, but that would mean noticing if
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 438 * we shift through all but the signed bit, and this is not
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 439 * currently detected (but we'll notice an overflow into the
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 440 * signed bit). So, for now, we will test this condition but
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 441 * mark it as not expected to overflow.
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 442 */
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 443 TEST_ONE_SHIFT(0, 7, s8, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 444 TEST_ONE_SHIFT(0, 15, s16, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 445 TEST_ONE_SHIFT(0, 31, int, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 446 TEST_ONE_SHIFT(0, 31, s32, 0, false);
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 447 TEST_ONE_SHIFT(0, 63, s64, 0, false);
8e7c8ca6b98890 lib/test_overflow.c Kees Cook 2021-09-20 448
617f55e20743fc lib/overflow_kunit.c Kees Cook 2022-02-16 449 kunit_info(test, "%d shift tests finished\n", count);
8e7c8ca6b98890 lib/test_overflow.c Kees Cook 2021-09-20 450 #undef TEST_ONE_SHIFT
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 @451 }
d36b6ad27c7b95 lib/test_overflow.c Kees Cook 2018-08-01 452
:::::: The code at line 451 was first introduced by commit
:::::: d36b6ad27c7b95e3f6bfbf6ea33757c8e8accf01 test_overflow: Add shift overflow tests
:::::: TO: Kees Cook <keescook@...omium.org>
:::::: CC: Jason Gunthorpe <jgg@...lanox.com>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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