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drm/amd/display: Add hpd_source index check for DCE60/80/100/110/112/120 link encoders 

This patch adds a boundary check for the hpd_source index during the
link encoder creation process for all DCExxx IP's. 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 07:28:45 +05:30 committed by Alex Deucher
parent 785504dd7f
commit 7c8fb3b8e9
6 changed files with 6 additions and 6 deletions
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2
drivers/gpu/drm/amd/display/dc/dce60/dce60_resource.c
View File

@ -717,7 +717,7 @@ static struct link_encoder *dce60_link_encoder_create(
kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);
int link_regs_id;
if (!enc110)
if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
link_regs_id =

2
drivers/gpu/drm/amd/display/dc/resource/dce100/dce100_resource.c
View File

@ -623,7 +623,7 @@ static struct link_encoder *dce100_link_encoder_create(
kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);
int link_regs_id;
if (!enc110)
if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
link_regs_id =

2
drivers/gpu/drm/amd/display/dc/resource/dce110/dce110_resource.c
View File

@ -668,7 +668,7 @@ static struct link_encoder *dce110_link_encoder_create(
kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);
int link_regs_id;
if (!enc110)
if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
link_regs_id =

2
drivers/gpu/drm/amd/display/dc/resource/dce112/dce112_resource.c
View File

@ -629,7 +629,7 @@ static struct link_encoder *dce112_link_encoder_create(
kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);
int link_regs_id;
if (!enc110)
if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
link_regs_id =

2
drivers/gpu/drm/amd/display/dc/resource/dce120/dce120_resource.c
View File

@ -706,7 +706,7 @@ static struct link_encoder *dce120_link_encoder_create(
kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);
int link_regs_id;
if (!enc110)
if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
link_regs_id =

2
drivers/gpu/drm/amd/display/dc/resource/dce80/dce80_resource.c
View File

@ -723,7 +723,7 @@ static struct link_encoder *dce80_link_encoder_create(
kzalloc(sizeof(struct dce110_link_encoder), GFP_KERNEL);
int link_regs_id;
if (!enc110)
if (!enc110 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs))
return NULL;
link_regs_id =