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([2620:10d:c090:600::1:e6e1]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-31e51876dfasm47801a91.0.2025.07.22.13.30.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Jul 2025 13:30:07 -0700 (PDT) Message-ID: Subject: Re: [PATCH bpf-next v3 10/10] selftests/bpf: Cover read/write to skb metadata at an offset From: Eduard Zingerman To: Jakub Sitnicki , bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Arthur Fabre , Daniel Borkmann , Eric Dumazet , Jakub Kicinski , Jesper Dangaard Brouer , Jesse Brandeburg , Joanne Koong , Lorenzo Bianconi , Martin KaFai Lau , Toke =?ISO-8859-1?Q?H=F8iland-J=F8rgensen?= , Yan Zhai , kernel-team@cloudflare.com, netdev@vger.kernel.org, Stanislav Fomichev Date: Tue, 22 Jul 2025 13:30:05 -0700 In-Reply-To: <20250721-skb-metadata-thru-dynptr-v3-10-e92be5534174@cloudflare.com> References: <20250721-skb-metadata-thru-dynptr-v3-0-e92be5534174@cloudflare.com> <20250721-skb-metadata-thru-dynptr-v3-10-e92be5534174@cloudflare.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2 (3.56.2-1.fc42) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2025-07-21 at 12:52 +0200, Jakub Sitnicki wrote: > Exercise r/w access to skb metadata through an offset-adjusted dynptr, > read/write helper with an offset argument, and a slice starting at an > offset. >=20 > Signed-off-by: Jakub Sitnicki > --- Maybe also add a test case checking error conditions for out of bounds metadata access? 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