Re: [PATCH bpf-next] selftests/bpf: Harden cpu flags test for lru_percpu_hash map

[Martin KaFai Lau]

On 1/19/26 5:34 AM, Leon Hwang wrote:
> Harden the test against this behavior by provisioning sufficient spare
> elements. Set max_entries to 'nr_cpus * 2' and restrict the test to using
> the first nr_cpus entries, ensuring that updates do not spuriously trigger
> LRU eviction.

[ ... ]

@ -300,7 +307,7 @@ static void test_percpu_map_cpu_flag(enum 
bpf_map_type map_type)
>   	if (!ASSERT_GT(nr_cpus, 0, "libbpf_num_possible_cpus"))
>   		return;
>   
> -	max_entries = nr_cpus + 1;
> +	max_entries = nr_cpus * 2;
>   	keys = calloc(max_entries, key_sz);

Does it need to allocate "nr_cpus * 2" number of keys while only first 
nr_cpus entries are used? This can be a followup if it's needed. Applied 
to start getting signal from CI.