| Message ID | 20190614082015.23336-1-toshiaki.makita1@gmail.com |
|---|---|
| Headers | show
Return-Path: <netdev-owner@vger.kernel.org> X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=<UNKNOWN>) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="rl0+BwIN"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45QD7c6cCZz9s6w for <patchwork-incoming-netdev@ozlabs.org>; Fri, 14 Jun 2019 18:20:28 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726379AbfFNIU2 (ORCPT <rfc822;patchwork-incoming-netdev@ozlabs.org>); Fri, 14 Jun 2019 04:20:28 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:43909 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725907AbfFNIU1 (ORCPT <rfc822;netdev@vger.kernel.org>); Fri, 14 Jun 2019 04:20:27 -0400 Received: by mail-pf1-f193.google.com with SMTP id i189so965283pfg.10; Fri, 14 Jun 2019 01:20:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=W5nhBd4tGkI+YkG/MObiCYrxBxL/ZsCas4j/NPHh32A=; b=rl0+BwINzNssk0x2Yex1Dc3r/f07cgA/+mjq6AUfkshnGmdLRua9K0rP0OrGm1+uZC QDQdcVGhjIh70mpECzlM9WpVjc66S4qNh5ncfXVrc3/8EmJENNMzB9v3l7Wx4ZyFIQQs ZcqY1nC0NdEY9v8+ej+UcNTrxHLQAmWEQLXH/8P+wkYcldsA2GPFukAQRj6ikm2PWr7q 2IhoJXa21q4orCEF8yeWaHEfZIdURDVNdIvAp7HLjdKjGeQ7b0WNHu7S2xGCGBYEo7Vk LDTErnW8T3TwwolIljagF+qtP1VCeZlAt9CaGVMSpSJ7k/5gcuhHNW2vJY+oOlWaFyJo BuoA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=W5nhBd4tGkI+YkG/MObiCYrxBxL/ZsCas4j/NPHh32A=; b=PcD/7OW6KYWmo5rys2P8YDX2d/RCXhguT07Ju1EGYq6AJc+UdkLqrfXlGLKJ35tEbJ w7OyTBh8G5NiMZA1sk0H5gBe0gXdsBw9mQBcAL03fvj5RA1vjD0WlT2/7joAqozudIH1 oz3VXrzjFNkfNJJJSFWr/6pwiXUSmgiYB3cudZkAZaXE1YOH/cybxa4YnVk5OhTrXg1g zD6t3lG28VI9N42zH2zHr2GUqVxunmaaY4ByiP9DW6cwbrxkZCKfjVsjPlHlxmGCA1Z9 r5edV0pI9zGclTpDFo/MfCfzUmzw9IrowZ/x34mdcL/yKz+3ZQOEfeti9NvBM8dtcvRF aLXQ== X-Gm-Message-State: APjAAAXlXVpTx3mMMOUE1PNIXZP6QqIKRLHTFUNHKj2DJVQcNzntAZME oX7mKoGJTwnccYkYmZAAbLY= X-Google-Smtp-Source: APXvYqyBCZ/QovHTeuxnultLakLrj5E8Uu7UuEYLK+KqX03zArrZ9vqsTwbfiM8/5nX8FEJ3SB5dLA== X-Received: by 2002:a65:6096:: with SMTP id t22mr33979197pgu.71.1560500427047; Fri, 14 Jun 2019 01:20:27 -0700 (PDT) Received: from z400-fedora29.kern.oss.ntt.co.jp ([222.151.198.97]) by smtp.gmail.com with ESMTPSA id t18sm3352343pgm.69.2019.06.14.01.20.23 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 14 Jun 2019 01:20:26 -0700 (PDT) From: Toshiaki Makita <toshiaki.makita1@gmail.com> To: Alexei Starovoitov <ast@kernel.org>, Daniel Borkmann <daniel@iogearbox.net>, "David S. Miller" <davem@davemloft.net>, Jakub Kicinski <jakub.kicinski@netronome.com>, Jesper Dangaard Brouer <hawk@kernel.org>, John Fastabend <john.fastabend@gmail.com> Cc: Toshiaki Makita <toshiaki.makita1@gmail.com>, netdev@vger.kernel.org, xdp-newbies@vger.kernel.org, bpf@vger.kernel.org, "Michael S. Tsirkin" <mst@redhat.com>, Jason Wang <jasowang@redhat.com>, David Ahern <dsahern@gmail.com> Subject: [PATCH bpf 0/3] Devmap fixes around memory and RCU Date: Fri, 14 Jun 2019 17:20:12 +0900 Message-Id: <20190614082015.23336-1-toshiaki.makita1@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: <netdev.vger.kernel.org> X-Mailing-List: netdev@vger.kernel.org |
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Devmap fixes around memory and RCU
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Patch1: Jesper showed concerns around devmap free and flush race when reviewing my XDP bulk TX patch set, and I think indeed there is a race. Patch1 fix it. Patch2: While reviewing dev_map_free I found bulk queue was not freed. Patch2 fix it. Patch3: Some days ago David Ahern reported suspicous RCU usage in virtnet_xdp_xmit(), but it seems no one posted an official fix patch. So I arraged the fix. Signed-off-by: Toshiaki Makita <toshiaki.makita1@gmail.com> Toshiaki Makita (3): devmap: Fix premature entry free on destroying map devmap: Add missing bulk queue free devmap: Add missing RCU read lock on flush kernel/bpf/devmap.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)