From: Yonghong Song <yonghong.song@linux.dev>
To: Daniel Borkmann <daniel@iogearbox.net>, bpf@vger.kernel.org
Cc: malin89@huawei.com, ast@kernel.org,
Rongzhen Cui <cuirongzhen@huawei.com>,
Jingguo Tan <tanjingguo@huawei.com>
Subject: Re: [PATCH bpf-next 2/2] selftests/bpf: Cover tail-call cgroup storage prog-array checks
Date: Wed, 10 Jun 2026 13:15:00 -0700 [thread overview]
Message-ID: <23d0b8c8-71bd-4c60-846c-d4abc70b9858@linux.dev> (raw)
In-Reply-To: <20260610105539.705887-2-daniel@iogearbox.net>
On 6/10/26 3:55 AM, Daniel Borkmann wrote:
> From: Lin Ma <malin89@huawei.com>
>
> 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 and for the A(storage) -> B(no storage) -> C(storage)
> bridge case addressed in the previous commit.
>
> Also verify that a storage-less leaf program which cannot perform tail
> calls itself is still allowed to join a storage-owned prog array, while
> a storage-less tail-caller is rejected also at map update time.
>
> # LDLIBS=-static PKG_CONFIG='pkg-config --static' ./vmtest.sh -- ./test_progs -t tailcalls
> [...]
> #475/25 tailcalls/tailcall_freplace:OK
> #475/26 tailcalls/tailcall_bpf2bpf_freplace:OK
> #475/27 tailcalls/tailcall_failure:OK
> #475/28 tailcalls/reject_tail_call_spin_lock:OK
> #475/29 tailcalls/reject_tail_call_rcu_lock:OK
> #475/30 tailcalls/reject_tail_call_preempt_lock:OK
> #475/31 tailcalls/reject_tail_call_ref:OK
> #475/32 tailcalls/tailcall_sleepable:OK
> #475/33 tailcalls/tailcall_cgrp_storage:OK
> #475/34 tailcalls/tailcall_cgrp_storage_diff_storage:OK
> #475/35 tailcalls/tailcall_cgrp_storage_no_storage:OK
> #475/36 tailcalls/tailcall_cgrp_storage_no_storage_leaf:OK
> #475/37 tailcalls/tailcall_cgrp_storage_no_storage_bridge:OK
> #475 tailcalls:OK
> Summary: 1/37 PASSED, 0 SKIPPED, 0 FAILED
>
> Signed-off-by: Lin Ma <malin89@huawei.com>
> Signed-off-by: Rongzhen Cui <cuirongzhen@huawei.com>
> Signed-off-by: Jingguo Tan <tanjingguo@huawei.com>
> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
next prev parent reply other threads:[~2026-06-10 20:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-10 10:55 [PATCH bpf-next 1/2] bpf: Tighten cgroup storage cookie checks for prog arrays Daniel Borkmann
2026-06-10 10:55 ` [PATCH bpf-next 2/2] selftests/bpf: Cover tail-call cgroup storage prog-array checks Daniel Borkmann
2026-06-10 20:15 ` Yonghong Song [this message]
2026-06-10 20:14 ` [PATCH bpf-next 1/2] bpf: Tighten cgroup storage cookie checks for prog arrays Yonghong Song
2026-06-10 23:20 ` patchwork-bot+netdevbpf
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