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Message-ID: <20250811101529.150716-1-jose.exposito89@gmail.com>
Date: Mon, 11 Aug 2025 12:15:17 +0200
From: José Expósito <jose.exposito89@...il.com>
To: louis.chauvet@...tlin.com
Cc: hamohammed.sa@...il.com,
simona@...ll.ch,
melissa.srw@...il.com,
maarten.lankhorst@...ux.intel.com,
mripard@...nel.org,
tzimmermann@...e.de,
airlied@...il.com,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
José Expósito <jose.exposito89@...il.com>,
Dan Carpenter <dan.carpenter@...aro.org>
Subject: [PATCH] drm/vkms: Assert if vkms_config_create_*() fails
Check that the value returned by the vkms_config_create_*() functions is
valid. Otherwise, assert and finish the KUnit test.
Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/dri-devel/aJTL6IFEBaI8gqtH@stanley.mountain/
Signed-off-by: José Expósito <jose.exposito89@...il.com>
---
drivers/gpu/drm/vkms/tests/vkms_config_test.c | 51 +++++++++++++++++--
1 file changed, 46 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/vkms/tests/vkms_config_test.c b/drivers/gpu/drm/vkms/tests/vkms_config_test.c
index ff4566cf9925..b0d78a81d2df 100644
--- a/drivers/gpu/drm/vkms/tests/vkms_config_test.c
+++ b/drivers/gpu/drm/vkms/tests/vkms_config_test.c
@@ -200,6 +200,7 @@ static void vkms_config_test_get_planes(struct kunit *test)
KUNIT_ASSERT_EQ(test, n_planes, 0);
plane_cfg1 = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg1);
vkms_config_for_each_plane(config, plane_cfg) {
n_planes++;
if (plane_cfg != plane_cfg1)
@@ -209,6 +210,7 @@ static void vkms_config_test_get_planes(struct kunit *test)
n_planes = 0;
plane_cfg2 = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg2);
vkms_config_for_each_plane(config, plane_cfg) {
n_planes++;
if (plane_cfg != plane_cfg1 && plane_cfg != plane_cfg2)
@@ -242,6 +244,7 @@ static void vkms_config_test_get_crtcs(struct kunit *test)
KUNIT_FAIL(test, "Unexpected CRTC");
crtc_cfg1 = vkms_config_create_crtc(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg1);
KUNIT_ASSERT_EQ(test, vkms_config_get_num_crtcs(config), 1);
vkms_config_for_each_crtc(config, crtc_cfg) {
if (crtc_cfg != crtc_cfg1)
@@ -249,6 +252,7 @@ static void vkms_config_test_get_crtcs(struct kunit *test)
}
crtc_cfg2 = vkms_config_create_crtc(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg2);
KUNIT_ASSERT_EQ(test, vkms_config_get_num_crtcs(config), 2);
vkms_config_for_each_crtc(config, crtc_cfg) {
if (crtc_cfg != crtc_cfg1 && crtc_cfg != crtc_cfg2)
@@ -280,6 +284,7 @@ static void vkms_config_test_get_encoders(struct kunit *test)
KUNIT_ASSERT_EQ(test, n_encoders, 0);
encoder_cfg1 = vkms_config_create_encoder(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg1);
vkms_config_for_each_encoder(config, encoder_cfg) {
n_encoders++;
if (encoder_cfg != encoder_cfg1)
@@ -289,6 +294,7 @@ static void vkms_config_test_get_encoders(struct kunit *test)
n_encoders = 0;
encoder_cfg2 = vkms_config_create_encoder(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg2);
vkms_config_for_each_encoder(config, encoder_cfg) {
n_encoders++;
if (encoder_cfg != encoder_cfg1 && encoder_cfg != encoder_cfg2)
@@ -324,6 +330,7 @@ static void vkms_config_test_get_connectors(struct kunit *test)
KUNIT_ASSERT_EQ(test, n_connectors, 0);
connector_cfg1 = vkms_config_create_connector(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, connector_cfg1);
vkms_config_for_each_connector(config, connector_cfg) {
n_connectors++;
if (connector_cfg != connector_cfg1)
@@ -333,6 +340,7 @@ static void vkms_config_test_get_connectors(struct kunit *test)
n_connectors = 0;
connector_cfg2 = vkms_config_create_connector(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, connector_cfg2);
vkms_config_for_each_connector(config, connector_cfg) {
n_connectors++;
if (connector_cfg != connector_cfg1 &&
@@ -370,7 +378,7 @@ static void vkms_config_test_invalid_plane_number(struct kunit *test)
/* Invalid: Too many planes */
for (n = 0; n <= 32; n++)
- vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vkms_config_create_plane(config));
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
@@ -395,6 +403,7 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
/* Invalid: No primary plane */
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_OVERLAY);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
@@ -402,11 +411,13 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
/* Invalid: Multiple primary planes */
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
@@ -419,11 +430,13 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
/* Invalid: Multiple cursor planes */
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_CURSOR);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_CURSOR);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
@@ -437,12 +450,16 @@ static void vkms_config_test_valid_plane_type(struct kunit *test)
/* Invalid: Second CRTC without primary plane */
crtc_cfg = vkms_config_create_crtc(config);
encoder_cfg = vkms_config_create_encoder(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg);
+
err = vkms_config_encoder_attach_crtc(encoder_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
/* Valid: Second CRTC with a primary plane */
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg);
KUNIT_EXPECT_EQ(test, err, 0);
@@ -486,7 +503,7 @@ static void vkms_config_test_invalid_crtc_number(struct kunit *test)
/* Invalid: Too many CRTCs */
for (n = 0; n <= 32; n++)
- vkms_config_create_crtc(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vkms_config_create_crtc(config));
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
@@ -509,7 +526,7 @@ static void vkms_config_test_invalid_encoder_number(struct kunit *test)
/* Invalid: Too many encoders */
for (n = 0; n <= 32; n++)
- vkms_config_create_encoder(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vkms_config_create_encoder(config));
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
@@ -531,12 +548,15 @@ static void vkms_config_test_valid_encoder_possible_crtcs(struct kunit *test)
/* Invalid: Encoder without a possible CRTC */
encoder_cfg = vkms_config_create_encoder(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg);
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
/* Valid: Second CRTC with shared encoder */
crtc_cfg2 = vkms_config_create_crtc(config);
-
plane_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg2);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg);
+
vkms_config_plane_set_type(plane_cfg, DRM_PLANE_TYPE_PRIMARY);
err = vkms_config_plane_attach_crtc(plane_cfg, crtc_cfg2);
KUNIT_EXPECT_EQ(test, err, 0);
@@ -577,7 +597,7 @@ static void vkms_config_test_invalid_connector_number(struct kunit *test)
/* Invalid: Too many connectors */
for (n = 0; n <= 32; n++)
- connector_cfg = vkms_config_create_connector(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vkms_config_create_connector(config));
KUNIT_EXPECT_FALSE(test, vkms_config_is_valid(config));
@@ -669,13 +689,19 @@ static void vkms_config_test_plane_attach_crtc(struct kunit *test)
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, config);
overlay_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, overlay_cfg);
vkms_config_plane_set_type(overlay_cfg, DRM_PLANE_TYPE_OVERLAY);
+
primary_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, primary_cfg);
vkms_config_plane_set_type(primary_cfg, DRM_PLANE_TYPE_PRIMARY);
+
cursor_cfg = vkms_config_create_plane(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, cursor_cfg);
vkms_config_plane_set_type(cursor_cfg, DRM_PLANE_TYPE_CURSOR);
crtc_cfg = vkms_config_create_crtc(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg);
/* No primary or cursor planes */
KUNIT_EXPECT_NULL(test, vkms_config_crtc_primary_plane(config, crtc_cfg));
@@ -735,6 +761,11 @@ static void vkms_config_test_plane_get_possible_crtcs(struct kunit *test)
crtc_cfg1 = vkms_config_create_crtc(config);
crtc_cfg2 = vkms_config_create_crtc(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg1);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, plane_cfg2);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg1);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg2);
+
/* No possible CRTCs */
vkms_config_plane_for_each_possible_crtc(plane_cfg1, idx, possible_crtc)
KUNIT_FAIL(test, "Unexpected possible CRTC");
@@ -799,6 +830,11 @@ static void vkms_config_test_encoder_get_possible_crtcs(struct kunit *test)
crtc_cfg1 = vkms_config_create_crtc(config);
crtc_cfg2 = vkms_config_create_crtc(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg1);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg2);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg1);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_cfg2);
+
/* No possible CRTCs */
vkms_config_encoder_for_each_possible_crtc(encoder_cfg1, idx, possible_crtc)
KUNIT_FAIL(test, "Unexpected possible CRTC");
@@ -863,6 +899,11 @@ static void vkms_config_test_connector_get_possible_encoders(struct kunit *test)
encoder_cfg1 = vkms_config_create_encoder(config);
encoder_cfg2 = vkms_config_create_encoder(config);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, connector_cfg1);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, connector_cfg2);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg1);
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder_cfg2);
+
/* No possible encoders */
vkms_config_connector_for_each_possible_encoder(connector_cfg1, idx,
possible_encoder)
--
2.50.1
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