From: kernel test robot <lkp@intel.com>
To: avivdaum <aviv.daum@gmail.com>
Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev,
Christian Brauner <christianvanbrauner@gmail.com>,
Christian Brauner <brauner@kernel.org>
Subject: [brauner-vfs:vfs-7.1.fat 1/1] fs/fat/fat_test.c:226:13: warning: stack frame size (2648) exceeds limit (1280) in 'fat_time_fat2unix_test'
Date: Wed, 25 Mar 2026 17:41:12 +0800 [thread overview]
Message-ID: <202603251755.4UYY1Rcd-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs-7.1.fat
head: 4bbf3f58e00f8671eb384c7df6983d803058b204
commit: 4bbf3f58e00f8671eb384c7df6983d803058b204 [1/1] fat: add KUnit tests for timestamp conversion helpers
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20260325/202603251755.4UYY1Rcd-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260325/202603251755.4UYY1Rcd-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603251755.4UYY1Rcd-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> fs/fat/fat_test.c:226:13: warning: stack frame size (2648) exceeds limit (1280) in 'fat_time_fat2unix_test' [-Wframe-larger-than]
226 | static void fat_time_fat2unix_test(struct kunit *test)
| ^
>> fs/fat/fat_test.c:249:13: warning: stack frame size (2640) exceeds limit (1280) in 'fat_time_unix2fat_test' [-Wframe-larger-than]
249 | static void fat_time_unix2fat_test(struct kunit *test)
| ^
>> fs/fat/fat_test.c:275:13: warning: stack frame size (2640) exceeds limit (1280) in 'fat_time_unix2fat_clamp_test' [-Wframe-larger-than]
275 | static void fat_time_unix2fat_clamp_test(struct kunit *test)
| ^
>> fs/fat/fat_test.c:300:13: warning: stack frame size (2656) exceeds limit (1280) in 'fat_time_unix2fat_no_csec_test' [-Wframe-larger-than]
300 | static void fat_time_unix2fat_no_csec_test(struct kunit *test)
| ^
>> fs/fat/fat_test.c:322:13: warning: stack frame size (2632) exceeds limit (1280) in 'fat_truncate_atime_test' [-Wframe-larger-than]
322 | static void fat_truncate_atime_test(struct kunit *test)
| ^
5 warnings generated.
vim +/fat_time_fat2unix_test +226 fs/fat/fat_test.c
b0d4adaf3b3c44 David Gow 2021-04-15 225
b0d4adaf3b3c44 David Gow 2021-04-15 @226 static void fat_time_fat2unix_test(struct kunit *test)
b0d4adaf3b3c44 David Gow 2021-04-15 227 {
b0d4adaf3b3c44 David Gow 2021-04-15 228 static struct msdos_sb_info fake_sb;
b0d4adaf3b3c44 David Gow 2021-04-15 229 struct timespec64 ts;
b0d4adaf3b3c44 David Gow 2021-04-15 230 struct fat_timestamp_testcase *testcase =
b0d4adaf3b3c44 David Gow 2021-04-15 231 (struct fat_timestamp_testcase *)test->param_value;
b0d4adaf3b3c44 David Gow 2021-04-15 232
4bbf3f58e00f86 avivdaum 2026-03-16 233 fat_test_set_time_offset(&fake_sb, testcase->time_offset);
b0d4adaf3b3c44 David Gow 2021-04-15 234
b0d4adaf3b3c44 David Gow 2021-04-15 235 fat_time_fat2unix(&fake_sb, &ts,
b0d4adaf3b3c44 David Gow 2021-04-15 236 testcase->time,
b0d4adaf3b3c44 David Gow 2021-04-15 237 testcase->date,
b0d4adaf3b3c44 David Gow 2021-04-15 238 testcase->cs);
b0d4adaf3b3c44 David Gow 2021-04-15 239 KUNIT_EXPECT_EQ_MSG(test,
b0d4adaf3b3c44 David Gow 2021-04-15 240 testcase->ts.tv_sec,
b0d4adaf3b3c44 David Gow 2021-04-15 241 ts.tv_sec,
b0d4adaf3b3c44 David Gow 2021-04-15 242 "Timestamp mismatch (seconds)\n");
b0d4adaf3b3c44 David Gow 2021-04-15 243 KUNIT_EXPECT_EQ_MSG(test,
b0d4adaf3b3c44 David Gow 2021-04-15 244 testcase->ts.tv_nsec,
b0d4adaf3b3c44 David Gow 2021-04-15 245 ts.tv_nsec,
b0d4adaf3b3c44 David Gow 2021-04-15 246 "Timestamp mismatch (nanoseconds)\n");
b0d4adaf3b3c44 David Gow 2021-04-15 247 }
b0d4adaf3b3c44 David Gow 2021-04-15 248
b0d4adaf3b3c44 David Gow 2021-04-15 @249 static void fat_time_unix2fat_test(struct kunit *test)
b0d4adaf3b3c44 David Gow 2021-04-15 250 {
b0d4adaf3b3c44 David Gow 2021-04-15 251 static struct msdos_sb_info fake_sb;
b0d4adaf3b3c44 David Gow 2021-04-15 252 __le16 date, time;
b0d4adaf3b3c44 David Gow 2021-04-15 253 u8 cs;
b0d4adaf3b3c44 David Gow 2021-04-15 254 struct fat_timestamp_testcase *testcase =
b0d4adaf3b3c44 David Gow 2021-04-15 255 (struct fat_timestamp_testcase *)test->param_value;
b0d4adaf3b3c44 David Gow 2021-04-15 256
4bbf3f58e00f86 avivdaum 2026-03-16 257 fat_test_set_time_offset(&fake_sb, testcase->time_offset);
b0d4adaf3b3c44 David Gow 2021-04-15 258
b0d4adaf3b3c44 David Gow 2021-04-15 259 fat_time_unix2fat(&fake_sb, &testcase->ts,
b0d4adaf3b3c44 David Gow 2021-04-15 260 &time, &date, &cs);
b0d4adaf3b3c44 David Gow 2021-04-15 261 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 262 testcase->time,
4bbf3f58e00f86 avivdaum 2026-03-16 263 time,
b0d4adaf3b3c44 David Gow 2021-04-15 264 "Time mismatch\n");
b0d4adaf3b3c44 David Gow 2021-04-15 265 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 266 testcase->date,
4bbf3f58e00f86 avivdaum 2026-03-16 267 date,
b0d4adaf3b3c44 David Gow 2021-04-15 268 "Date mismatch\n");
b0d4adaf3b3c44 David Gow 2021-04-15 269 KUNIT_EXPECT_EQ_MSG(test,
b0d4adaf3b3c44 David Gow 2021-04-15 270 testcase->cs,
b0d4adaf3b3c44 David Gow 2021-04-15 271 cs,
b0d4adaf3b3c44 David Gow 2021-04-15 272 "Centisecond mismatch\n");
b0d4adaf3b3c44 David Gow 2021-04-15 273 }
b0d4adaf3b3c44 David Gow 2021-04-15 274
4bbf3f58e00f86 avivdaum 2026-03-16 @275 static void fat_time_unix2fat_clamp_test(struct kunit *test)
4bbf3f58e00f86 avivdaum 2026-03-16 276 {
4bbf3f58e00f86 avivdaum 2026-03-16 277 static struct msdos_sb_info fake_sb;
4bbf3f58e00f86 avivdaum 2026-03-16 278 __le16 date, time;
4bbf3f58e00f86 avivdaum 2026-03-16 279 u8 cs;
4bbf3f58e00f86 avivdaum 2026-03-16 280 struct fat_unix2fat_clamp_testcase *testcase =
4bbf3f58e00f86 avivdaum 2026-03-16 281 (struct fat_unix2fat_clamp_testcase *)test->param_value;
4bbf3f58e00f86 avivdaum 2026-03-16 282
4bbf3f58e00f86 avivdaum 2026-03-16 283 fat_test_set_time_offset(&fake_sb, testcase->time_offset);
4bbf3f58e00f86 avivdaum 2026-03-16 284
4bbf3f58e00f86 avivdaum 2026-03-16 285 fat_time_unix2fat(&fake_sb, &testcase->ts, &time, &date, &cs);
4bbf3f58e00f86 avivdaum 2026-03-16 286 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 287 testcase->time,
4bbf3f58e00f86 avivdaum 2026-03-16 288 time,
4bbf3f58e00f86 avivdaum 2026-03-16 289 "Clamped time mismatch\n");
4bbf3f58e00f86 avivdaum 2026-03-16 290 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 291 testcase->date,
4bbf3f58e00f86 avivdaum 2026-03-16 292 date,
4bbf3f58e00f86 avivdaum 2026-03-16 293 "Clamped date mismatch\n");
4bbf3f58e00f86 avivdaum 2026-03-16 294 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 295 testcase->cs,
4bbf3f58e00f86 avivdaum 2026-03-16 296 cs,
4bbf3f58e00f86 avivdaum 2026-03-16 297 "Clamped centisecond mismatch\n");
4bbf3f58e00f86 avivdaum 2026-03-16 298 }
4bbf3f58e00f86 avivdaum 2026-03-16 299
4bbf3f58e00f86 avivdaum 2026-03-16 @300 static void fat_time_unix2fat_no_csec_test(struct kunit *test)
4bbf3f58e00f86 avivdaum 2026-03-16 301 {
4bbf3f58e00f86 avivdaum 2026-03-16 302 static struct msdos_sb_info fake_sb;
4bbf3f58e00f86 avivdaum 2026-03-16 303 struct timespec64 ts = {
4bbf3f58e00f86 avivdaum 2026-03-16 304 .tv_sec = 946684799LL,
4bbf3f58e00f86 avivdaum 2026-03-16 305 .tv_nsec = 0L,
4bbf3f58e00f86 avivdaum 2026-03-16 306 };
4bbf3f58e00f86 avivdaum 2026-03-16 307 __le16 date, time;
4bbf3f58e00f86 avivdaum 2026-03-16 308
4bbf3f58e00f86 avivdaum 2026-03-16 309 fat_test_set_time_offset(&fake_sb, 0);
4bbf3f58e00f86 avivdaum 2026-03-16 310
4bbf3f58e00f86 avivdaum 2026-03-16 311 fat_time_unix2fat(&fake_sb, &ts, &time, &date, NULL);
4bbf3f58e00f86 avivdaum 2026-03-16 312 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 313 49021,
4bbf3f58e00f86 avivdaum 2026-03-16 314 le16_to_cpu(time),
4bbf3f58e00f86 avivdaum 2026-03-16 315 "Time mismatch without centiseconds\n");
4bbf3f58e00f86 avivdaum 2026-03-16 316 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 317 10143,
4bbf3f58e00f86 avivdaum 2026-03-16 318 le16_to_cpu(date),
4bbf3f58e00f86 avivdaum 2026-03-16 319 "Date mismatch without centiseconds\n");
4bbf3f58e00f86 avivdaum 2026-03-16 320 }
4bbf3f58e00f86 avivdaum 2026-03-16 321
4bbf3f58e00f86 avivdaum 2026-03-16 @322 static void fat_truncate_atime_test(struct kunit *test)
4bbf3f58e00f86 avivdaum 2026-03-16 323 {
4bbf3f58e00f86 avivdaum 2026-03-16 324 static struct msdos_sb_info fake_sb;
4bbf3f58e00f86 avivdaum 2026-03-16 325 struct timespec64 actual;
4bbf3f58e00f86 avivdaum 2026-03-16 326 struct fat_truncate_atime_testcase *testcase =
4bbf3f58e00f86 avivdaum 2026-03-16 327 (struct fat_truncate_atime_testcase *)test->param_value;
4bbf3f58e00f86 avivdaum 2026-03-16 328
4bbf3f58e00f86 avivdaum 2026-03-16 329 fat_test_set_time_offset(&fake_sb, testcase->time_offset);
4bbf3f58e00f86 avivdaum 2026-03-16 330
4bbf3f58e00f86 avivdaum 2026-03-16 331 actual = fat_truncate_atime(&fake_sb, &testcase->ts);
4bbf3f58e00f86 avivdaum 2026-03-16 332 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 333 testcase->expected.tv_sec,
4bbf3f58e00f86 avivdaum 2026-03-16 334 actual.tv_sec,
4bbf3f58e00f86 avivdaum 2026-03-16 335 "Atime truncation seconds mismatch\n");
4bbf3f58e00f86 avivdaum 2026-03-16 336 KUNIT_EXPECT_EQ_MSG(test,
4bbf3f58e00f86 avivdaum 2026-03-16 337 testcase->expected.tv_nsec,
4bbf3f58e00f86 avivdaum 2026-03-16 338 actual.tv_nsec,
4bbf3f58e00f86 avivdaum 2026-03-16 339 "Atime truncation nanoseconds mismatch\n");
4bbf3f58e00f86 avivdaum 2026-03-16 340 }
4bbf3f58e00f86 avivdaum 2026-03-16 341
:::::: The code at line 226 was first introduced by commit
:::::: b0d4adaf3b3c4402d9c3b6186e02aa1e4f7985cd fat: Add KUnit tests for checksums and timestamps
:::::: TO: David Gow <davidgow@google.com>
:::::: CC: Shuah Khan <skhan@linuxfoundation.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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