From: Leon Hwang <leon.hwang@linux.dev>
To: Viktor Malik <vmalik@redhat.com>, bpf@vger.kernel.org
Cc: Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
John Fastabend <john.fastabend@gmail.com>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@fomichev.me>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>, Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>, Shuah Khan <shuah@kernel.org>
Subject: Re: [PATCH bpf-next v2 2/3] bpf: Always allow fmod_ret programs on syscalls
Date: Mon, 9 Mar 2026 10:40:29 +0800 [thread overview]
Message-ID: <05345a8e-d683-46b7-9d1a-fbc2e7750de7@linux.dev> (raw)
In-Reply-To: <710368d4559b13d2d82a47ef1fa7d70a9a038add.1772804200.git.vmalik@redhat.com>
On 6/3/26 21:40, Viktor Malik wrote:
> fmod_ret BPF programs can only be attached to selected functions. For
> convenience, the error injection list was originally used (along with
> functions prefixed with "security_"), which contains syscalls and
> several other functions.
>
> When error injection is disabled (CONFIG_FUNCTION_ERROR_INJECTION=n),
> that list is empty and fmod_ret programs are effectively unavailable for
> most of the functions. In such a case, at least enable fmod_ret programs
> on syscalls.
>
> Signed-off-by: Viktor Malik <vmalik@redhat.com>
> ---
LGTM
Acked-by: Leon Hwang <leon.hwang@linux.dev>
> [...]
next prev parent reply other threads:[~2026-03-09 2:40 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-06 13:40 [PATCH bpf-next v2 0/3] Always allow sleepable and fmod_ret programs on syscalls Viktor Malik
2026-03-06 13:40 ` [PATCH bpf-next v2 1/3] bpf: Always allow sleepable " Viktor Malik
2026-03-06 16:13 ` Kumar Kartikeya Dwivedi
2026-03-09 2:37 ` Leon Hwang
2026-03-06 13:40 ` [PATCH bpf-next v2 2/3] bpf: Always allow fmod_ret " Viktor Malik
2026-03-06 16:13 ` Kumar Kartikeya Dwivedi
2026-03-09 2:40 ` Leon Hwang [this message]
2026-03-06 13:40 ` [PATCH bpf-next v2 3/3] selftests/bpf: Move sleepable refcounted_kptr tests to syscalls Viktor Malik
2026-03-06 16:13 ` Kumar Kartikeya Dwivedi
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