On Wed, Oct 23, 2024 at 10:03:44AM +0800, Hou Tao wrote: > > Without the fix, there will be KASAN report as show below when dumping > all keys in the lpm-trie through bpf_map_get_next_key(). Thank you for testing. > > However, I have a dumb question: does it make sense to reject the > element with prefixlen = 0 ? Because I can't think of a use case where a > zero-length prefix will be useful. With prefixlen = 0, it would always return -ENOENT, I think. Maybe it is good to reject it earlier!