linux-kernel - Re: [PATCH bpf] selftests/bpf: DENYLIST.aarch64: Remove fexit

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Message-ID: <224eeadb-fc5f-baeb-0808-a4f9916afa3c@iogearbox.net>
Date: Mon, 8 Jul 2024 17:29:10 +0200
From: Daniel Borkmann <daniel@...earbox.net>
To: KP Singh <kpsingh@...nel.org>, Puranjay Mohan <puranjay@...nel.org>
Cc: Andrii Nakryiko <andrii@...nel.org>, Eduard Zingerman
 <eddyz87@...il.com>, Mykola Lysenko <mykolal@...com>,
 Alexei Starovoitov <ast@...nel.org>, Martin KaFai Lau
 <martin.lau@...ux.dev>, Song Liu <song@...nel.org>,
 Yonghong Song <yonghong.song@...ux.dev>,
 John Fastabend <john.fastabend@...il.com>,
 Stanislav Fomichev <sdf@...gle.com>, Hao Luo <haoluo@...gle.com>,
 Jiri Olsa <jolsa@...nel.org>, Shuah Khan <shuah@...nel.org>,
 bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-kernel@...r.kernel.org, Manu Bretelle <chantra@...a.com>,
 Florent Revest <revest@...gle.com>
Subject: Re: [PATCH bpf] selftests/bpf: DENYLIST.aarch64: Remove fexit_sleep

On 7/8/24 5:26 PM, KP Singh wrote:
> On Mon, Jul 8, 2024 at 5:00 PM Puranjay Mohan <puranjay@...nel.org> wrote:
>>
>> Daniel Borkmann <daniel@...earbox.net> writes:
>>
>>> On 7/5/24 4:50 PM, Puranjay Mohan wrote:
>>>> fexit_sleep test runs successfully now on the CI so remove it from the
>>>> deny list.
>>>
>>> Do you happen to know which commit fixed it? If yes, might be nice to have it
>>> documented in the commit message.
>>
>> Actually, I never saw this test failing on my local setup and yesterday
>> I tried running it on the CI where it passed as well. So, I assumed that
>> this would be fixed by some commit. I am not sure which exact commit
>> might have fixed this.
>>
>> Manu, Martin
>>
>> When this was added to the deny list was this failing every time and did
>> you have some reproducer for this. If there is a reproducer, I can try
>> fixing it but when ran normally this test never fails for me.
> 
> I think this never worked until
> https://lore.kernel.org/lkml/20230405180250.2046566-1-revest@chromium.org/
> was merged, FTrace direct calls was blocking tracing programs on ARM,
> since then it has always worked.

Awesome, thanks! I'll add this to the commit desc then when applying.