title: Get linux kernel's dump_stack to char array instead of to console
body: <p>So, when I call dump_stack(), it printk's to dmesg. But, I need it to, let's say, 'print' it to char array, so that I could display the stack much, much later, in a different place. </p>
  
  <p>Is it possible? It would help me sooo much with debugging a nasty bug I'm having!</p>