Ebpf map question

Hi

Assuming to have this struct:

struct hash_elem {
    int cnt;
    };

and kernel space program want read cnt value:

struct hash_elem *val = bpf_map_lookup_elem(&hash_map, &key);

    if (val)
   {

# time fraction

    bpf_printk("My value %d", val->cnt);
    }

What happens if the hash_map is a pinned map and in the same time
space of 'time fraction" a user program deletes the element of the
key?
What happen at val pointer?


Thanks.

Marco