On 5/19/20 5:04 AM, Nikolay Aleksandrov wrote: > the ->nh pointer might become suddenly null while we're selecting the > path and we may dereference it. Dereference it only once in the > beginning and use that if it's not null, we rely on the refcounting and > rcu to protect against use-after-free.
the num_nh is also affected. I think an rcu update of the entire nh_grp is the better solution. Dataplane should always see a valid nh_grp via rcu.
