bad_get_feat_req_by_name
if (!bad_get_feat_req_by_name(ctrl, "health", 0, NULL, NVME_ERR_BAD_PTR,
if (!bad_get_feat_req_by_name(ctrl, NULL, 0, &feat_req,
if (!bad_get_feat_req_by_name(ctrl, NULL, 0x87654321, &feat_req,
if (!bad_get_feat_req_by_name(ctrl, "elbereth", 0, &feat_req,
if (!bad_get_feat_req_by_name(ctrl, "health", 0, &feat_req,