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drm/amd/display: Add hpd_source index check for dcn401 link encoder setup

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This patch adds a boundary check for the hpd_source index during the
link encoder creation process for all dcn401 ip. The check ensures that the
index is within the valid range of the link_enc_hpd_regs array to
prevent out-of-bounds access.

Cc: Tom Chung <chiahsuan.chung@amd.com>
Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Cc: Roman Li <roman.li@amd.com>
Cc: Alex Hung <alex.hung@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Roman Li <roman.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Srinivasan Shanmugam
2024-10-17 07:36:46 +05:30
committed by Alex Deucher
parent a3fc44b980
commit 86b5be6ea2
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c
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@@ -1032,7 +1032,7 @@ static struct link_encoder *dcn401_link_encoder_create(
struct dcn20_link_encoder *enc20 =
kzalloc(sizeof(struct dcn20_link_encoder), GFP_KERNEL);
if (!enc20)
if (!enc20 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
#undef REG_STRUCT