[PATCH AUTOSEL 6.11 185/244] drm/amd/display: Increase array size of dummy_boolean

Sasha Levin
2024-09-25T11:49:14Z

From: Alex Hung <alex.hung@amd.com>

[ Upstream commit 6d64d39486197083497a01b39e23f2f8474b35d3 ]

[WHY]
dml2_core_shared_mode_support and dml_core_mode_support access the third
element of dummy_boolean, i.e. hw_debug5 = &s->dummy_boolean[2], when
dummy_boolean has size of 2. Any assignment to hw_debug5 causes an
OVERRUN.

[HOW]
Increase dummy_boolean's array size to 3.

This fixes 2 OVERRUN issues reported by Coverity.

Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../dc/dml2/dml21/src/dml2_core/dml2_core_shared_types.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared_types.h b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared_types.h
index 1343b744eeb31..67e32a4ab0114 100644
--- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/src/dml2_core/dml2_core_shared_types.h
@@ -865,7 +865,7 @@ struct dml2_core_calcs_mode_support_locals {
unsigned int dpte_row_bytes_per_row_l[DML2_MAX_PLANES];
unsigned int dpte_row_bytes_per_row_c[DML2_MAX_PLANES];

- bool dummy_boolean[2];
+ bool dummy_boolean[3];
unsigned int dummy_integer[3];
unsigned int dummy_integer_array[36][DML2_MAX_PLANES];
enum dml2_odm_mode dummy_odm_mode[DML2_MAX_PLANES];
--
2.43.0