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| author | Danilo Krummrich <dakr@kernel.org> | 2025-08-29 09:55:39 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2025-08-29 17:42:20 +0200 |
| commit | 9ca595f501e48cec41c6c56becda6468a409b8ba (patch) | |
| tree | a1fc6ddb54dfb687d2230521e2c99763e2d285a6 | |
| parent | 7d9bc9bee2778e2da7147aeb3a81427487598493 (diff) | |
drm/test: drm_exec: use kzalloc() to allocate GEM objects
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 <aliceryhl@google.com>
Cc: Christian König <christian.koenig@amd.com>
Fixes: e7fa80e2932c ("drm_gem: add mutex to drm_gem_object.gpuva")
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Nirmoy Das <nirmoyd@nvidia.com>
Link: https://lore.kernel.org/r/20250829075633.2306-1-dakr@kernel.org
[ Use kunit_kzalloc() instead of kzalloc(). - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/tests/drm_exec_test.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/drivers/gpu/drm/tests/drm_exec_test.c b/drivers/gpu/drm/tests/drm_exec_test.c index d6c4dd1194a0..3a20c788c51f 100644 --- a/drivers/gpu/drm/tests/drm_exec_test.c +++ b/drivers/gpu/drm/tests/drm_exec_test.c @@ -150,14 +150,22 @@ static void test_prepare(struct kunit *test) static void test_prepare_array(struct kunit *test) { struct drm_exec_priv *priv = test->priv; - struct drm_gem_object gobj1 = { }; - struct drm_gem_object gobj2 = { }; - struct drm_gem_object *array[] = { &gobj1, &gobj2 }; + struct drm_gem_object *gobj1; + struct drm_gem_object *gobj2; + struct drm_gem_object *array[] = { + (gobj1 = kunit_kzalloc(test, sizeof(*gobj1), GFP_KERNEL)), + (gobj2 = kunit_kzalloc(test, sizeof(*gobj2), GFP_KERNEL)), + }; struct drm_exec exec; int ret; - drm_gem_private_object_init(priv->drm, &gobj1, PAGE_SIZE); - drm_gem_private_object_init(priv->drm, &gobj2, PAGE_SIZE); + if (!gobj1 || !gobj2) { + KUNIT_FAIL(test, "Failed to allocate GEM objects.\n"); + return; + } + + drm_gem_private_object_init(priv->drm, gobj1, PAGE_SIZE); + drm_gem_private_object_init(priv->drm, gobj2, PAGE_SIZE); drm_exec_init(&exec, DRM_EXEC_INTERRUPTIBLE_WAIT, 0); drm_exec_until_all_locked(&exec) @@ -166,8 +174,8 @@ static void test_prepare_array(struct kunit *test) KUNIT_EXPECT_EQ(test, ret, 0); drm_exec_fini(&exec); - drm_gem_private_object_fini(&gobj1); - drm_gem_private_object_fini(&gobj2); + drm_gem_private_object_fini(gobj1); + drm_gem_private_object_fini(gobj2); } static void test_multiple_loops(struct kunit *test) |