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

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Message-ID: <CACYkzJ7d_u=aRzbubBypSVhnUSjBQnbZjPuGXhqnMzbp0tJm_g@mail.gmail.com>
Date: Mon, 8 Jul 2024 17:26:39 +0200
From: KP Singh <kpsingh@...nel.org>
To: Puranjay Mohan <puranjay@...nel.org>
Cc: Daniel Borkmann <daniel@...earbox.net>, 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 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.

- KP

> Thanks,
> Puranjay