From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E2C83CF2561 for ; Wed, 19 Nov 2025 00:50:00 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 8ECB140AF8; Wed, 19 Nov 2025 00:50:00 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id 8fQchyutCe73; Wed, 19 Nov 2025 00:49:59 +0000 (UTC) X-Comment: SPF check N/A for local connections - client-ip=140.211.166.142; helo=lists1.osuosl.org; envelope-from=intel-wired-lan-bounces@osuosl.org; receiver= DKIM-Filter: OpenDKIM Filter v2.11.0 smtp4.osuosl.org 1FFC640A84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=osuosl.org; s=default; t=1763513399; bh=u1JZP4mJOczUNP4pl5LS4F0RC54qpkfUlqRw4pgbJgQ=; h=Date:From:To:Cc:References:In-Reply-To:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=3mYMwPYbQhV44wEy/w3jvhFoJyGk+bSHDV+m36wKGzs3IvUMPLBcUGbLyzIXH4HTv wTxN/WbdysJPbAnAqyTl6n1plE4IigaWvQUVaCzLQdHeCA1sWcj0hxFWUnX8qs/Awt Yu9/167PzSdrQbZmjZbgZEpB6Gbl4BooJLLt2CjqsqmayA6Z1Qe8s0D4lxq2yE/X7k EwyGQcYU/C1qFNkl1Q9BXOlvUkBYzBOTlga03dnj51vvbK4wBS/ogk40oAjqx6qMGT +nYBbFkm0DxC9xz3XWcg56JndbRYPus9T05SGw1YcYgFf63LPzgQyAiFugGS/coY3R HbzFcBt1hxa4A== Received: from lists1.osuosl.org (lists1.osuosl.org [140.211.166.142]) by smtp4.osuosl.org (Postfix) with ESMTP id 1FFC640A84; Wed, 19 Nov 2025 00:49:59 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists1.osuosl.org (Postfix) with ESMTP id 78949158 for ; Wed, 19 Nov 2025 00:49:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 6A37E827FD for ; Wed, 19 Nov 2025 00:49:57 +0000 (UTC) X-Virus-Scanned: amavis at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavis, port 10024) with ESMTP id 28hRitRoYGdQ for ; Wed, 19 Nov 2025 00:49:56 +0000 (UTC) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=2607:f8b0:4864:20::102a; helo=mail-pj1-x102a.google.com; envelope-from=alessandro.d@gmail.com; receiver= DMARC-Filter: OpenDMARC Filter v1.4.2 smtp1.osuosl.org B7B47827CE DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org B7B47827CE Received: from mail-pj1-x102a.google.com (mail-pj1-x102a.google.com [IPv6:2607:f8b0:4864:20::102a]) by smtp1.osuosl.org (Postfix) with ESMTPS id B7B47827CE for ; Wed, 19 Nov 2025 00:49:56 +0000 (UTC) Received: by mail-pj1-x102a.google.com with SMTP id 98e67ed59e1d1-3436d6aa66dso259974a91.1 for ; Tue, 18 Nov 2025 16:49:56 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763513396; x=1764118196; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=u1JZP4mJOczUNP4pl5LS4F0RC54qpkfUlqRw4pgbJgQ=; b=mwaS415Cc0oM71HyRDPrH+2PEPFgVlv2f/yiB7cdgHa+/UdcNW9i5WN/KqyJ+0Iw3N xniw58J3cvvJQ3b9VeKhKGP/LDLkuADkHHhtFxxlwDKqFUtusUzIwGP+by5h9tO5qY7g VA8oQQO0rWGOs+TkidCrTa5lk/nyuQjs0xx5Dhh2Hox4B4V4MsvbT3MASd3u5bxJaUu0 ZZni+Scoj4oUTy/BiRxY9dXfZfQsf1PurgqhriwqnFpPYVxMK3G9JRkg7aZZui2KFV6B Bl9Bf6mAYqktdnDZsEDbcH8RvFcK/1+54qaqS1VPQPF4BYUnT/u833xLmp1LYlV6OXj5 EVCg== X-Forwarded-Encrypted: i=1; AJvYcCXgyUy8RCjiPumNCclCV1hkRgdMGRnS7yTjmx2v1cWFPMSkK0rUulnIH9s3LZbnkP8kyX5sBauPlOBtKR0xhJQ=@lists.osuosl.org X-Gm-Message-State: AOJu0Yzw7CxPYbXE0o/8CIkqXDDzDKBqlQWSLLscbWQkvEJ5TL3xzAxi YQVG3sWUnrUZ+OcJ3y6GibYOpojUhAn63LQpmrUR55GdQkcXMGDWhjF0 X-Gm-Gg: ASbGnctOVlSGWDN+cIh5waTrMShcxVr5B2MYz5yLnAkUGn4wxmBy6DGmv98nEJNwHSA 9+FdM7VVoUx0kY/xBlrQr2tlDlcWS6G9geayq/MpeDl/yMFTBfKWI3TlARW0d4eMYuhQQ2/CtjI 2Mye8s0CjuQKqErlJQ/ITjdTlQt2gNQJCvw9K1lHHO5ooc5efXnGteh1Pc9FfJ/M4Gkj9vHQC5e B1rH/A4rBjZ1uWhieIL7EwhbE8MDh8Hwd9WyDQCZK+AWdToYil73lLQ7UHIxWVCMrryaG6kcpyN iuU460xrZflMOVerQE12U9BGwohJz3pneYpTPA/m8komjeAT7J0CnDZvh/kazaI9vRpJW4P4OV7 4Iikk5aCFIStgK5c+GYkBQb5B1eSKTdAH6HmmDUMyPi+O/4kx4GMMNVHaU6jjOYM+m4O3d+tbr6 GoU44h5rlKXx7y2NdqmH+/zXr5MyOfALQJsmz2Vg== X-Google-Smtp-Source: AGHT+IE8JxmF1L3MBeFjrjhCVliPKr3nWeWpK8dN326PMLP1SXtwFKRVIWLKhkDIZdOHuuTrc26bbg== X-Received: by 2002:a17:90b:1345:b0:340:29a3:800f with SMTP id 98e67ed59e1d1-345bd3038cemr513343a91.15.1763513396057; Tue, 18 Nov 2025 16:49:56 -0800 (PST) Received: from lima-default ([103.246.102.164]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-345bbfc8d8esm704033a91.2.2025.11.18.16.49.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Nov 2025 16:49:55 -0800 (PST) Date: Wed, 19 Nov 2025 11:49:44 +1100 From: Alessandro Decina To: Maciej Fijalkowski Cc: "Loktionov, Aleksandr" , "netdev@vger.kernel.org" , "David S. 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" Message-ID: References: <20251118113117.11567-1-alessandro.d@gmail.com> <20251118113117.11567-2-alessandro.d@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1763513396; x=1764118196; darn=lists.osuosl.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=u1JZP4mJOczUNP4pl5LS4F0RC54qpkfUlqRw4pgbJgQ=; b=frrpBG6JV8nv48nwf6zCEr9Bqmnf34/+uYYyTyR+O4vOz5O/hqwnZhU7k0EON42G90 IwXaqZHZyHhcAylidvpmwN0vo4exeESry1RloyQI2bGCPJWyM23EzfNcxHkuMPxbjzST eEp5bcP3Th71VJc4lFdZvjLLutSihDh+vyJ7s/k3wrltAmh01xgUzSguRkF6lNVmB7oF 5IROt9arq42/PhqATOeDybPe2qvMB9egLwyJilX2qWY1bD+h+N9rI6v0yaC3NmN1nw8T E5zOIFuJ5+HnPBhW7mNKhm24azuG60Apbk1gU9SomhHXTu65c/wMtRrELMQIIpHsm/7+ Hrng== X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dmarc=pass (p=none dis=none) header.from=gmail.com X-Mailman-Original-Authentication-Results: smtp1.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=frrpBG6J Subject: Re: [Intel-wired-lan] [PATCH net v4 1/1] i40e: xsk: advance next_to_clean on status descriptors X-BeenThere: intel-wired-lan@osuosl.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Intel Wired Ethernet Linux Kernel Driver Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-wired-lan-bounces@osuosl.org Sender: "Intel-wired-lan" 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.