kernel/linux.git/drivers/gpu/drm/tests/drm_exec_test.c, branch v6.18.21

drm/test: drm_exec: use kzalloc() to allocate GEM objects

2025-08-29T15:42:20+00:00

Since commit e7fa80e2932c ("drm_gem: add mutex to drm_gem_object.gpuva") it is possible for test_prepare_array() to exceed a stack frame size of 2048 bytes depending on the exact configuration of the kernel. drivers/gpu/drm/tests/drm_exec_test.c: In function ‘test_prepare_array’: drivers/gpu/drm/tests/drm_exec_test.c:171:1: error: the frame size of 2128 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] 171 | } | ^ cc1: all warnings being treated as errors make[6]: *** [scripts/Makefile.build:287: drivers/gpu/drm/tests/drm_exec_test.o] Error 1 make[6]: *** Waiting for unfinished jobs.... In order to fix this, allocate the GEM objects in test_prepare_array() with kzalloc(), rather than placing them on the stack. Cc: Alice Ryhl Cc: Christian König Fixes: e7fa80e2932c ("drm_gem: add mutex to drm_gem_object.gpuva") Reviewed-by: Christian König Reviewed-by: Alice Ryhl Reviewed-by: Nirmoy Das Link: https://lore.kernel.org/r/20250829075633.2306-1-dakr@kernel.org [ Use kunit_kzalloc() instead of kzalloc(). - Danilo ] Signed-off-by: Danilo Krummrich

drm/tests: add missing MODULE_DESCRIPTION() macros

2024-06-10T08:32:48+00:00

make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_kunit_helpers.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_buddy_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_cmdline_parser_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_connector_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_damage_helper_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_dp_mst_helper_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_exec_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_format_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_framebuffer_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_gem_shmem_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_managed_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_mm_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_modes_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_plane_helper_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_probe_helper_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_rect_test.o Add the missing invocations of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20240606-md-drivers-gpu-drm-tests-v1-1-228ca6213969@quicinc.com

drm/exec: Pass in initial # of objects

2023-12-10T18:38:47+00:00

In cases where the # is known ahead of time, it is silly to do the table resize dance. Signed-off-by: Rob Clark Reviewed-by: Christian König Patchwork: https://patchwork.freedesktop.org/patch/568338/

drm/test: drm_exec: fix memory leak on object prepare

2023-08-10T07:01:00+00:00

drm_exec_prepare_obj() and drm_exec_prepare_array() both reserve dma-fence slots and hence a dma_resv_list without ever freeing it. Make sure to call drm_gem_private_object_fini() for each GEM object passed to drm_exec_prepare_obj()/drm_exec_prepare_array() throughout the test to fix this up. While at it, remove some trailing empty lines. Fixes: 9710631cc8f3 ("drm: add drm_exec selftests v4") Signed-off-by: Danilo Krummrich Reviewed-by: Christian König Link: https://patchwork.freedesktop.org/patch/msgid/20230809225034.8803-1-dakr@redhat.com Signed-off-by: Christian König

drm/exec: add test case for using a drm_exec multiple times

2023-08-10T06:38:57+00:00

Not really a common use case, but let's make sure that we don't accidentially break that somehow. CC: Boris Brezillon Signed-off-by: Christian König Reviewed-by: Boris Brezillon Signed-off-by: Boris Brezillon Link: https://patchwork.freedesktop.org/patch/msgid/20230731123625.3766-2-christian.koenig@amd.com

drm/tests: Alloc drm_device on drm_exec tests

2023-08-01T07:30:13+00:00

The drm_exec tests where crashing[0] because of a null dereference. This is caused by a new access of the `driver` attribute of `struct drm_driver` on drm_gem_private_object_init(). Alloc the drm_device to fix that. [0] [15:05:24] ================== drm_exec (6 subtests) =================== [15:05:24] [PASSED] sanitycheck ^CERROR:root:Build interruption occurred. Cleaning console. [15:05:50] [ERROR] Test: drm_exec: missing expected subtest! [15:05:50] BUG: kernel NULL pointer dereference, address: 00000000000000b0 [15:05:50] #PF: supervisor read access in kernel mode [15:05:50] #PF: error_code(0x0000) - not-present page [15:05:50] PGD 0 P4D 0 [15:05:50] Oops: 0000 [#1] PREEMPT NOPTI [15:05:50] CPU: 0 PID: 23 Comm: kunit_try_catch Tainted: G N 6.4.0-rc7-02032-ge6303f323b1a #69 [15:05:50] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc37 04/01/2014 [15:05:50] RIP: 0010:drm_gem_private_object_init+0x60/0xc0 Fixes: e6303f323b1a ("drm: manager to keep track of GPUs VA mappings") Signed-off-by: Arthur Grillo Tested-by: Danilo Krummrich Acked-by: Danilo Krummrich Reviewed-by: Maíra Canal Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/20230731182241.240556-1-arthurgrillo@riseup.net

drm: add drm_exec selftests v4

2023-07-12T12:14:23+00:00

Exercise at least all driver facing functions of this new component. v2: add array test as well v3: some kunit cleanups v4: more tests and cleanups Signed-off-by: Christian König Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20230711133122.3710-3-christian.koenig@amd.com