aa_label_alloc
struct aa_label *aa_label_alloc(int size, struct aa_proxy *proxy, gfp_t gfp);
new = aa_label_alloc(a->size + b->size, NULL, gfp);
new = aa_label_alloc(label->size, label->proxy, GFP_KERNEL);
new = aa_label_alloc(len, NULL, gfp);