From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 40F2D17FEF for ; Wed, 19 Jul 2023 12:31:02 +0000 (UTC) Received: from mail-il1-x132.google.com (mail-il1-x132.google.com [IPv6:2607:f8b0:4864:20::132]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 660EB186; Wed, 19 Jul 2023 05:30:59 -0700 (PDT) Received: by mail-il1-x132.google.com with SMTP id e9e14a558f8ab-3489cd4e3d3so6469555ab.3; Wed, 19 Jul 2023 05:30:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1689769858; x=1692361858; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=nyelAFhBqC7a6h8KFfAv2WQuGfH7nEdJ9cZtx3ZPD3w=; b=VE7iNtpws7j28phGM9tm3pz1NUfmwVl2IllYO7nmxLTE1LTAnZYvR8lfo+6QeFbnc1 Wg/Ot6iaw/8lS5AylTLNd818zyyDsQXk178XLYrRAS4FXB+fG3PduHE+8rdCfLyAbKOR gLFAQeKv7Qvo2u6+2/aEsu4FhZ4u3ROPSFYmNXi1UsVYgviHfKb/ehXra0xET61tuTdC Ob8vZhpQVnSqud6YGJKSt/fQXVlwQg4suNwwTQruBSlxeujuSdAb2oB0WNIiGamikdHK PneVoOCo22TaTlJ8bOK+SPd5zNFnFNxj2ginv4HSDuOmlrr6l8wwkdV2G3f6dgXR7Cce xAKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689769858; x=1692361858; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=nyelAFhBqC7a6h8KFfAv2WQuGfH7nEdJ9cZtx3ZPD3w=; b=JrFnImcVJQ2NZ5B/AD8M3r0kBJLxEY8oYt9NyIIhPfphpDawPPOp+c3wEvkpF8hpG3 irFT5OaSbqxI/qbNc0cUPLQOhSe0LpVh5BTIffHFt4uEJYXh7heNzSebdBi9WyJXYxIj AvYHQMgVGcSsvncAeoDDsxOLPjc/5TA7l1RWyPZLFLVV9sD+zBs/ct2gLGbzGlRS9932 g/rNQeqtSPK+qq8I//Wdwt1OuFTAIRly0UPVPF+p9LVB9E9DB/0D9x6aDT8yDkI9DHRM QJLPifZnXIeHc5Csvm27cq0U0M61wNJbZ1ms5Mfe4TJvk4NqyOD8RrluGz7DXswIwEg9 tQ7w== X-Gm-Message-State: ABy/qLYKMBYm8IWGKgpEMBitlOHEt+Kv6329dS09BSRkTcaT6dJ6adJ5 8T/ak2nTKRsnUoSz9M4Oh5I= X-Google-Smtp-Source: APBJJlEMyFO+3pdtjDtXrJi07Y2AVy0m52kCGiLm+w9lvt8THgUVqbEF3FDdma3ZuPO9yaElS6E6hw== X-Received: by 2002:a05:6e02:1bc8:b0:348:90e2:750a with SMTP id x8-20020a056e021bc800b0034890e2750amr2650304ilv.8.1689769857778; Wed, 19 Jul 2023 05:30:57 -0700 (PDT) Received: from [192.168.0.104] ([103.131.18.64]) by smtp.gmail.com with ESMTPSA id mr1-20020a17090b238100b002676e973274sm1211434pjb.0.2023.07.19.05.30.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 19 Jul 2023 05:30:56 -0700 (PDT) Message-ID: <4759e7d4-5a8c-8acb-1775-e049b9b06cc1@gmail.com> Date: Wed, 19 Jul 2023 19:30:46 +0700 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: Fwd: Unexplainable packet drop starting at v6.4 Content-Language: en-US To: Thorsten Leemhuis , Andrzej Kacprowski , Krystian Pradzynski , Stanislaw Gruszka , Jacek Lawrynowicz , Oded Gabbay , Jesse Brandeburg , Tony Nguyen , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , hq.dev+kernel@msdfc.xyz Cc: Linux Kernel Mailing List , Linux Regressions , Linux DRI Development , Linux Networking , Linux Intel Ethernet Drivers References: <444d8158-cc58-761d-a878-91e5d4d28b71@leemhuis.info> From: Bagas Sanjaya In-Reply-To: <444d8158-cc58-761d-a878-91e5d4d28b71@leemhuis.info> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,NICE_REPLY_A, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net On 7/19/23 18:49, Thorsten Leemhuis wrote: > On 18.07.23 02:51, Bagas Sanjaya wrote: >> >> I notice a regression report on Bugzilla [1]. Quoting from it: >> >>> After I updated to 6.4 through Archlinux kernel update, suddenly I noticed random packet losses on my routers like nodes. I have these networking relevant config on my nodes >>> >>> 1. Using archlinux >>> 2. Network config through systemd-networkd >>> 3. Using bird2 for BGP routing, but not relevant to this bug. >>> 4. Using nftables for traffic control, but seems not relevant to this bug. >>> 5. Not using fail2ban like dymanic filtering tools, at least at L3/L4 level >>> >>> After I ruled out systemd-networkd, nftables related issues. I tracked down issues to kernel. >> [...] >> See Bugzilla for the full thread. >> >> Thorsten: The reporter had a bad bisect (some bad commits were marked as good >> instead), hence SoB chain for culprit (unrelated) ipvu commit is in To: >> list. I also asked the reporter (also in To:) to provide dmesg and request >> rerunning bisection, but he doesn't currently have a reliable reproducer. >> Is it the best I can do? > > When a bisection apparently went sideways it's best to not bother the > culprit's developers with it, they most likely will just be annoyed by > it (and then they might become annoyed by regression tracking, which we > need to avoid). > I mean don't Cc: the culprit author in that case? > I'd have forwarded this to the network folks, but in a style along the > lines of "FYI, in case somebody has a idea or has heard about something > similar and thus can help; if not, no worries, reporter is repeating the > bisection". > Aha! I missed that point. I already have networking folks in To: list. Thanks! -- An old man doll... just what I always wanted! - Clara