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Mon, 22 Dec 2025 19:22:45 -0800 (PST) Content-Type: text/plain; charset=us-ascii Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.700.81.1.4\)) Subject: Re: [RFC PATCH bpf 1/2] bpf: Fix memory access tags in helper prototypes From: Zesen Liu In-Reply-To: Date: Tue, 23 Dec 2025 11:22:26 +0800 Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Matt Bobrowski , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Daniel Xu , Shuah Khan , bpf@vger.kernel.org, linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org, Shuran Liu , Peili Gao , Haoran Ni Content-Transfer-Encoding: 7bit Message-Id: <0C2A0E4A-F35B-4247-B0C4-42C52C6786B7@gmail.com> References: <20251220-helper_proto-v1-0-2206e0d9422d@gmail.com> <20251220-helper_proto-v1-1-2206e0d9422d@gmail.com> To: Amery Hung X-Mailer: Apple Mail (2.3826.700.81.1.4) > On Dec 23, 2025, at 03:29, Amery Hung wrote: > > I did a quick search and there is one helper slipping. We should also > annotate arg1_type of bpf_kallsyms_lookup_name with MEM_RDONLY. Good catch, thanks! I will address this once we reach a conclusion on the ARG_PTR_TO_MEM semantics. Thanks, Zesen Liu