This patch adds a boundary check for the hpd_source index during the link encoder creation process for all dcn10 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]> --- drivers/gpu/drm/amd/display/dc/resource/dcn10/dcn10_resource.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn10/dcn10_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn10/dcn10_resource.c index 563c5eec83ff..05d6d41ef9d3 100644 --- a/drivers/gpu/drm/amd/display/dc/resource/dcn10/dcn10_resource.c +++ b/drivers/gpu/drm/amd/display/dc/resource/dcn10/dcn10_resource.c @@ -751,7 +751,7 @@ static struct link_encoder *dcn10_link_encoder_create( kzalloc(sizeof(struct dcn10_link_encoder), GFP_KERNEL); int link_regs_id; - if (!enc10) + if (!enc10 || enc_init_data->hpd_source >= ARRAY_SIZE(link_enc_hpd_regs)) return NULL; link_regs_id = -- 2.34.1
