On Wed, Dec 30, 2020 at 07:40:14PM +0800, Hui Su wrote: > local variable node_order do not need the static here.
It bloody well does. It can be up to 2^10 entries on x86 (and larger on others) That's 4kB which you've now moved onto the stack. Please, learn more about what you're doing. I suggest sending patches to drivers/staging; that will help you learn how to submit patches to linux.
