vrealloc
new_data = vrealloc(env->insn_aux_data,
ptr = vrealloc(NULL, PAGE_SIZE, GFP_KERNEL);
tmp = vrealloc(ptr, 4 * PAGE_SIZE, GFP_KERNEL);
tmp = vrealloc(ptr, PAGE_SIZE, GFP_KERNEL);
tmp = vrealloc(ptr, PAGE_SIZE / 2, GFP_KERNEL);
tmp = vrealloc(ptr, PAGE_SIZE, GFP_KERNEL);
v_ptr = vrealloc(v_ptr, size, GFP_KERNEL);
v_ptr = vrealloc(v_ptr, size, GFP_KERNEL);