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 X-Spam-Level: X-Spam-Status: No, score=-14.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0FF5FC433E0 for ; Mon, 15 Mar 2021 15:43:37 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8620B64E74 for ; Mon, 15 Mar 2021 15:43:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8620B64E74 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 1ADBE6B0070; Mon, 15 Mar 2021 11:43:36 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 15EF16B0071; Mon, 15 Mar 2021 11:43:36 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F1B8A6B0072; Mon, 15 Mar 2021 11:43:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0080.hostedemail.com [216.40.44.80]) by kanga.kvack.org (Postfix) with ESMTP id D5D4C6B0070 for ; Mon, 15 Mar 2021 11:43:35 -0400 (EDT) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 824A3180AD830 for ; Mon, 15 Mar 2021 15:43:35 +0000 (UTC) X-FDA: 77922528390.02.9EF04A7 Received: from mail-ot1-f44.google.com (mail-ot1-f44.google.com [209.85.210.44]) by imf21.hostedemail.com (Postfix) with ESMTP id D6D28E0C17E1 for ; Mon, 15 Mar 2021 15:15:45 +0000 (UTC) Received: by mail-ot1-f44.google.com with SMTP id 68-20020a9d0f4a0000b02901b663e6258dso5294567ott.13 for ; Mon, 15 Mar 2021 08:15:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=np/p9Ih58kbyvM0hIUqkXcnFFKPhSSCXOoOrFZ44REo=; b=MUPk/pbvsn449ONYJk455H6Kc7gE2u7S1noOh1h4Ceekj651HdpXnqPF/fmlu5WPOY DEMZjWTp3NjUYHaEVjXHq9/IpuVXsQNeu0rECQ2cRPbOYtmxEGxnt3Zw182ID7NEz35P CIUegNIVDabVbfTwMJT6CQUvgQNwZva/YpRFrAvOxpnGrB6pQBpNIQ40cU8N8bMx9eGl oUS6TFxnnRHPRrwCEy8p3u5SCf9hme2AESiU5ArpFKAn+UuCf70dKHW61rRBGmqU2iDF 7ELKnpHho+NQSVdMrwNtVaNb4HFspvuEEKZ5jxvoxVayIb3tfeDsUE7ThTfq0g1JayYf dkUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=np/p9Ih58kbyvM0hIUqkXcnFFKPhSSCXOoOrFZ44REo=; b=JFIAQdtFvLE0HZ+FNGDG3wMl5Vp4L+2IBJkxjWF+COQhjyu6ArCE5HbvuSsl90Yscz Br+zG2d9WoOhHp2APWTRL/CmIomgUi1YO5EFMYVhW9NhqgMg+A5p69Jas4qxXYsbOjoF yDIgOAQab3drQPQanIqflqP31aFLDj/ua0Jpd+whQD8M1eMQX7xfijbXoS90nL5zXoEM rsdhqZPrUGRzOIMFb4RcrqdtxfOVJndT0lco0hrtl/SASdWbwTNvIDLfS5HQxzkXjZWY DN+cW+pcRjRLHKNwGiwYRVyemkdDN3bXaxQMJwHRAArPsN9t2WBxZAzYFDYCcBOq8n3d K0+Q== X-Gm-Message-State: AOAM5305EaU/2bYBJ/wq8hjFifO0ZbNjcmF4u6OQ8PHIiPABLHnbzWcW jOkpaJIOgR2TkKveNG3H50Q= X-Google-Smtp-Source: ABdhPJyUzyDPFptw1eG2mxbBN5j32n7BW8PMllgbZti9p0QJ7Rr9O3t1aGKq2vFOkq1Ui3/JT+Tm/Q== X-Received: by 2002:a05:6830:1352:: with SMTP id r18mr15322205otq.283.1615821345096; Mon, 15 Mar 2021 08:15:45 -0700 (PDT) Received: from Davids-MacBook-Pro.local ([8.48.134.56]) by smtp.googlemail.com with ESMTPSA id w1sm7045730oop.1.2021.03.15.08.15.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 15 Mar 2021 08:15:44 -0700 (PDT) Subject: Re: [PATCH v2 4/8] memcg: accounting for ip_fib caches To: Vasily Averin , cgroups@vger.kernel.org, Michal Hocko Cc: linux-mm@kvack.org, Johannes Weiner , Vladimir Davydov , Shakeel Butt , "David S. Miller" , David Ahern , Jakub Kicinski , Hideaki YOSHIFUJI References: From: David Ahern Message-ID: Date: Mon, 15 Mar 2021 09:15:43 -0600 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: D6D28E0C17E1 X-Stat-Signature: r836puxjr9gonek415ikr5zho4fg4rs4 Received-SPF: none (gmail.com>: No applicable sender policy available) receiver=imf21; identity=mailfrom; envelope-from=""; helo=mail-ot1-f44.google.com; client-ip=209.85.210.44 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1615821345-230595 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 3/15/21 6:23 AM, Vasily Averin wrote: > An untrusted netadmin inside a memcg-limited container can create a > huge number of routing entries. Currently, allocated kernel objects > are not accounted to proper memcg, so this can lead to global memory > shortage on the host and cause lot of OOM kiils. > > This patch enables accounting for ip_fib_alias and ip_fib_trie caches > --- > net/ipv4/fib_trie.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > Acked-by: David Ahern