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GET /api/1.1/patches/2224704/?format=api
{ "id": 2224704, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2224704/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/ao4yv2o0cv8dPaKxuSYQGhLvUbSEyoqb0s32In5v6LNK1DLu9OWdQFFMZ_tuc1i-CcOLr1MXZYgpOBZcGQTBuI1swdQGygi24_RtIZ9sHbo=@protonmail.com/", "project": { "id": 26, "url": "http://patchwork.ozlabs.org/api/1.1/projects/26/?format=api", "name": "Netfilter Development", "link_name": "netfilter-devel", "list_id": "netfilter-devel.vger.kernel.org", "list_email": "netfilter-devel@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null }, "msgid": "<ao4yv2o0cv8dPaKxuSYQGhLvUbSEyoqb0s32In5v6LNK1DLu9OWdQFFMZ_tuc1i-CcOLr1MXZYgpOBZcGQTBuI1swdQGygi24_RtIZ9sHbo=@protonmail.com>", "date": "2026-04-17T19:41:32", "name": "doc: note meta cgroup returns zero on cgroupv2-only hosts", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": true, "hash": "4cc0d6bd136273672c7f2d94d3b84eeb890740c9", "submitter": { "id": 93180, "url": "http://patchwork.ozlabs.org/api/1.1/people/93180/?format=api", "name": "Avinash H. Duduskar", "email": "avinashhd@protonmail.com" }, "delegate": { "id": 11902, "url": "http://patchwork.ozlabs.org/api/1.1/users/11902/?format=api", "username": "strlen", "first_name": "Florian", "last_name": "Westphal", "email": "fw@strlen.de" }, "mbox": "http://patchwork.ozlabs.org/project/netfilter-devel/patch/ao4yv2o0cv8dPaKxuSYQGhLvUbSEyoqb0s32In5v6LNK1DLu9OWdQFFMZ_tuc1i-CcOLr1MXZYgpOBZcGQTBuI1swdQGygi24_RtIZ9sHbo=@protonmail.com/mbox/", "series": [ { "id": 500396, "url": "http://patchwork.ozlabs.org/api/1.1/series/500396/?format=api", "web_url": "http://patchwork.ozlabs.org/project/netfilter-devel/list/?series=500396", "date": "2026-04-17T19:41:32", "name": "doc: note meta cgroup returns zero on cgroupv2-only hosts", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500396/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2224704/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2224704/checks/", "tags": {}, "headers": { "Return-Path": "\n <netfilter-devel+bounces-12008-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "netfilter-devel@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n secure) header.d=protonmail.com header.i=@protonmail.com header.a=rsa-sha256\n header.s=protonmail3 header.b=RyRKmu/F;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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smtp.subspace.kernel.org;\n dmarc=pass (p=quarantine dis=none) header.from=protonmail.com;\n spf=pass smtp.mailfrom=protonmail.com;\n dkim=pass (2048-bit key) header.d=protonmail.com header.i=@protonmail.com\n header.b=RyRKmu/F; arc=none smtp.client-ip=109.224.244.30", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=protonmail.com;\n\ts=protonmail3; t=1776454896; x=1776714096;\n\tbh=qCPCvrhkOsGPGd3amlDjI5jADwpOQxEPgs5CVKAAYR8=;\n\th=Date:To:From:Cc:Subject:Message-ID:Feedback-ID:From:To:Cc:Date:\n\t Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector;\n\tb=RyRKmu/FHHNf3GEVB2TKbX8Gns+/hXpYAeAH30UxAHVvnC5+gf7J9DrbF37MAEDFO\n\t WKYgf7YN06vA0Dow78z2fk4D+OXohuAR9pDJZyVo4vpBVQ4DxTUWEhiIDJYGJdeX6S\n\t MNN+fsI2D1jSD3iKRp7KD15T42jFWoTX7+nZu4iNv9LSC/R8YXst6k4rwhNUZh7S1f\n\t 0DJSyKlI62jYKmjDm5xKIlH1JKd8GfkANbHHjCOJdRFIJKUPaWx7pPhl7nwSIDrSxm\n\t v06brqe5bj/zSuK2sZmISop/brrtPpclUF/8zctZJrn+LyYMJ9Iz5Pj7pcDHTdvWPF\n\t j+vl4i2HSmvGw==", "Date": "Fri, 17 Apr 2026 19:41:32 +0000", "To": "\"netfilter-devel@vger.kernel.org\" <netfilter-devel@vger.kernel.org>", "From": "\"Avinash H. Duduskar\" <avinashhd@protonmail.com>", "Cc": "\"pablo@netfilter.org\" <pablo@netfilter.org>,\n \"mkoutny@suse.com\" <mkoutny@suse.com>", "Subject": "[PATCH] doc: note meta cgroup returns zero on cgroupv2-only hosts", "Message-ID": "\n <ao4yv2o0cv8dPaKxuSYQGhLvUbSEyoqb0s32In5v6LNK1DLu9OWdQFFMZ_tuc1i-CcOLr1MXZYgpOBZcGQTBuI1swdQGygi24_RtIZ9sHbo=@protonmail.com>", "Feedback-ID": "10914616:user:proton", "X-Pm-Message-ID": "5d500efda6956afbf749d93dff5fe27c4fe85851", "Precedence": "bulk", "X-Mailing-List": "netfilter-devel@vger.kernel.org", "List-Id": "<netfilter-devel.vger.kernel.org>", "List-Subscribe": "<mailto:netfilter-devel+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:netfilter-devel+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=utf-8", "Content-Transfer-Encoding": "quoted-printable" }, "content": "Commit 2ff29969 (\"doc: Clarify cgroup meta variable\") corrected the\nterminology and pointed readers to socket cgroupv2. The man page still\ngives no indication that meta cgroup silently returns zero on\ncgroupv2-only hosts with CONFIG_CGROUP_NET_CLASSID=y (the distribution\ndefault) and no active net_cls hierarchy, the common configuration\non modern systems. Rules load without error and match nothing.\n\nMake the behaviour explicit in the meta expression types table.\n\nScript to reproduce the issue: https://gist.github.com/Strykar/512e08f9fc2e7ccdcac971fd1719489a\n\nSigned-off-by: Avinash H. Duduskar <avinashhd@protonmail.com>\n---\n doc/primary-expression.txt | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)", "diff": "diff --git a/doc/primary-expression.txt b/doc/primary-expression.txt\nindex bd80cd7f..f09817fe 100644\n--- a/doc/primary-expression.txt\n+++ b/doc/primary-expression.txt\n@@ -117,7 +117,8 @@ devgroup\n outgoing device group|\n devgroup\n |cgroup|\n-control group net_cls.classid (for matching on cgroupv2, see *socket cgroupv2*)|\n+control group net_cls.classid; reads zero on cgroupv2-only hosts without an\n+active net_cls hierarchy (for matching on cgroupv2, see *socket cgroupv2*)|\n integer (32 bit)\n |random|\n pseudo-random number|\n", "prefixes": [] }