When looking up the connector type make sure the index is valid. Avoids a later crash if we read past the end of the array.
This bug is similar to the issue which was fixed in commit e1718d97aa88 ("drm/amdgpu: avoid a possible array overflow").
Signed-off-by: Young Xiao 92siuyang@gmail.com --- drivers/gpu/drm/radeon/radeon_atombios.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c index f422a8d..971c541 100644 --- a/drivers/gpu/drm/radeon/radeon_atombios.c +++ b/drivers/gpu/drm/radeon/radeon_atombios.c @@ -632,6 +632,10 @@ bool radeon_get_atom_connector_info_from_object_table(struct drm_device *dev) connector_object_id = con_obj_id; } } else { + if (con_obj_id >= ARRAY_SIZE(object_connector_convert)) { + DRM_ERROR("invalid con_obj_id %d\n", con_obj_id); + continue; + } igp_lane_info = 0; connector_type = object_connector_convert[con_obj_id];