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Miller" , Alexei Starovoitov , Andrew Lunn , Daniel Borkmann , Eric Dumazet , Jakub Kicinski , Jesper Dangaard Brouer , John Fastabend , Paolo Abeni , "Kitszel, Przemyslaw" , Stanislav Fomichev , "Sarkar, Tirthendu" , "Nguyen, Anthony L" , "bpf@vger.kernel.org" , "intel-wired-lan@lists.osuosl.org" , "linux-kernel@vger.kernel.org" Subject: Re: [Intel-wired-lan] [PATCH net v4 1/1] i40e: xsk: advance next_to_clean on status descriptors Message-ID: References: <20251118113117.11567-1-alessandro.d@gmail.com> <20251118113117.11567-2-alessandro.d@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Nov 18, 2025 at 07:45:24PM +0100, Maciej Fijalkowski wrote: > Repro steps would be nice to have, rest would be rather redundant to me. Yeah unfortunately I don't really know how to _manually_ reproduce. I don't know why I'm getting these status descriptors, but I'm getting them reproducibly every few minutes on ubuntu 24.04 across 3 machines where I've hit this bug/tested the fix. The machines are doing ~300Mbps of UDP traffic, some of which is done using AF_XDP. The AF_XDP code is TX only, so it's executing the build-skb-in-zc-path all the time as all the ingress traffic goes to sockets. If you have any idea on how to reliably produce the descriptors I'm happy to give it a try.