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 <[email protected]> Cc: Rodrigo Siqueira <[email protected]> Cc: Roman Li <[email protected]> Cc: Alex Hung <[email protected]> Cc: Aurabindo Pillai <[email protected]> Cc: Harry Wentland <[email protected]> Cc: Hamza Mahfooz <[email protected]> Signed-off-by: Srinivasan Shanmugam <[email protected]> --- .../gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c index 46feff9348d9..b425b34dc7f5 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn401/dcn401_resource.c @@ -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 -- 2.34.1
