tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 734339e5c1c46e3af041b4c288c213e045e34354 commit: fc8d29e298cf47e07c2764ec1c340c1df8e50431 [9157/9846] drm: selftest: convert drm_mm selftest to KUnit config: arm-randconfig-r024-20220712 (https://download.01.org/0day-ci/archive/20220713/202207131924.3JDQ4WsP-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project e60b4fb2b777118c0ff664a6347851df14fcf75b) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fc8d29e298cf47e07c2764ec1c340c1df8e50431 git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout fc8d29e298cf47e07c2764ec1c340c1df8e50431 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/drm/tests/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/tests/drm_mm_test.c:344:12: warning: stack frame size (1032) exceeds limit (1024) in '__igt_reserve' [-Wframe-larger-than] static int __igt_reserve(struct kunit *test, unsigned int count, u64 size) ^ 1 warning generated. vim +/__igt_reserve +344 drivers/gpu/drm/tests/drm_mm_test.c 343 > 344 static int __igt_reserve(struct kunit *test, unsigned int count, u64 size) 345 { 346 DRM_RND_STATE(prng, random_seed); 347 struct drm_mm mm; 348 struct drm_mm_node tmp, *nodes, *node, *next; 349 unsigned int *order, n, m, o = 0; 350 int ret, err; 351 352 /* For exercising drm_mm_reserve_node(struct kunit *test, ), we want to check that 353 * reservations outside of the drm_mm range are rejected, and to 354 * overlapping and otherwise already occupied ranges. Afterwards, 355 * the tree and nodes should be intact. 356 */ 357 358 DRM_MM_BUG_ON(!count); 359 DRM_MM_BUG_ON(!size); 360 361 ret = -ENOMEM; 362 order = drm_random_order(count, &prng); 363 if (!order) 364 goto err; 365 366 nodes = vzalloc(array_size(count, sizeof(*nodes))); 367 KUNIT_ASSERT_TRUE(test, nodes); 368 369 ret = -EINVAL; 370 drm_mm_init(&mm, 0, count * size); 371 372 if (!check_reserve_boundaries(test, &mm, count, size)) 373 goto out; 374 375 for (n = 0; n < count; n++) { 376 nodes[n].start = order[n] * size; 377 nodes[n].size = size; 378 379 err = drm_mm_reserve_node(&mm, &nodes[n]); 380 if (err) { 381 KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n", 382 n, nodes[n].start); 383 ret = err; 384 goto out; 385 } 386 387 if (!drm_mm_node_allocated(&nodes[n])) { 388 KUNIT_FAIL(test, "reserved node not allocated! step %d, start %llu\n", 389 n, nodes[n].start); 390 goto out; 391 } 392 393 if (!expect_reserve_fail(test, &mm, &nodes[n])) 394 goto out; 395 } 396 397 /* After random insertion the nodes should be in order */ 398 if (!assert_continuous(test, &mm, size)) 399 goto out; 400 401 /* Repeated use should then fail */ 402 drm_random_reorder(order, count, &prng); 403 for (n = 0; n < count; n++) { 404 if (!expect_reserve_fail(test, &mm, set_node(&tmp, order[n] * size, 1))) 405 goto out; 406 407 /* Remove and reinsert should work */ 408 drm_mm_remove_node(&nodes[order[n]]); 409 err = drm_mm_reserve_node(&mm, &nodes[order[n]]); 410 if (err) { 411 KUNIT_FAIL(test, "reserve failed, step %d, start %llu\n", 412 n, nodes[n].start); 413 ret = err; 414 goto out; 415 } 416 } 417 418 if (!assert_continuous(test, &mm, size)) 419 goto out; 420 421 /* Overlapping use should then fail */ 422 for (n = 0; n < count; n++) { 423 if (!expect_reserve_fail(test, &mm, set_node(&tmp, 0, size * count))) 424 goto out; 425 } 426 for (n = 0; n < count; n++) { 427 if (!expect_reserve_fail(test, &mm, set_node(&tmp, size * n, size * (count - n)))) 428 goto out; 429 } 430 431 /* Remove several, reinsert, check full */ 432 for_each_prime_number(n, min(max_prime, count)) { 433 for (m = 0; m < n; m++) { 434 node = &nodes[order[(o + m) % count]]; 435 drm_mm_remove_node(node); 436 } 437 438 for (m = 0; m < n; m++) { 439 node = &nodes[order[(o + m) % count]]; 440 err = drm_mm_reserve_node(&mm, node); 441 if (err) { 442 KUNIT_FAIL(test, "reserve failed, step %d/%d, start %llu\n", 443 m, n, node->start); 444 ret = err; 445 goto out; 446 } 447 } 448 449 o += n; 450 451 if (!assert_continuous(test, &mm, size)) 452 goto out; 453 } 454 455 ret = 0; 456 out: 457 drm_mm_for_each_node_safe(node, next, &mm) 458 drm_mm_remove_node(node); 459 drm_mm_takedown(&mm); 460 vfree(nodes); 461 kfree(order); 462 err: 463 return ret; 464 } 465 -- 0-DAY CI Kernel Test Service https://01.org/lkp
