Re: [PATCH v2 2/2] selftests/bpf: Cover tail-call cgroup storage prog-array checks

[Leon Hwang <leon.hwang@linux.dev>]

On Tue, 2 Jun 2026 15:35:39 +0800, Lin Ma <malin89@huawei.com> wrote:
> Add tail-call selftests for prog-array ownership when cgroup storage is
> in use. Verify that loading succeeds when callers and callees reuse the
> owner's cgroup storage map, and that loading fails for a different
> storage map or for a storage-less bridge program.
>
> Signed-off-by: Lin Ma <malin89@huawei.com>
> Signed-off-by: Rongzhen Cui <cuirongzhen@huawei.com>
> Signed-off-by: Jingguo Tan <tanjingguo@huawei.com>
> ---
[...]
> @@ -1777,6 +1874,12 @@ void test_tailcalls(void)
>  		test_tailcall_freplace();
>  	if (test__start_subtest("tailcall_bpf2bpf_freplace"))
>  		test_tailcall_bpf2bpf_freplace();
> +	if (test__start_subtest("tailcall_cgrp_storage"))
> +		test_tailcall_cgrp_storage();
> +	if (test__start_subtest("tailcall_cgrp_storage_diff_storage"))
> +		test_tailcall_cgrp_storage_diff_storage();
> +	if (test__start_subtest("tailcall_cgrp_storage_no_storage"))
> +		test_tailcall_cgrp_storage_no_storage();
>

These new ones should stay at the tail of test_tailcalls().

Thanks,
Leon

>  	if (test__start_subtest("tailcall_failure"))
>  		test_tailcall_failure();
>  	if (test__start_subtest("tailcall_sleepable"))

[...]