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=-10.5 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 04FE4C433E9 for ; Tue, 2 Feb 2021 16:26:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B1A9764F72 for ; Tue, 2 Feb 2021 16:26:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236370AbhBBQZa (ORCPT ); Tue, 2 Feb 2021 11:25:30 -0500 Received: from mail-wr1-f53.google.com ([209.85.221.53]:38524 "EHLO mail-wr1-f53.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236320AbhBBQXZ (ORCPT ); Tue, 2 Feb 2021 11:23:25 -0500 Received: by mail-wr1-f53.google.com with SMTP id b3so2979933wrj.5; Tue, 02 Feb 2021 08:23:01 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=0Tl/pMxs9MIy87xsuWIVEOhHXa7tZ9dZIJ0KCeGa4jI=; b=fMy85NFgtbjalzT7DedynCqERL/6JDmbAIsO27jM4cpJn6X5QrTtuAMwcbYoexAoT6 GxVpama5x1SrodeLurAKRCGrmd7+KAdb0pfnuychTpyiFphLSHaWZRhVcfpreCfJRrl8 Z9UkuogsKzsxlrbq6wqf3XtrudfnL4Hq3cAWGdNcytkCRwQrU0Uq/Q9zU2QBONnAyvns c45TQWzOfTVGh39E2FgyKe9iIh+HJaUE03FjCVg/QcsMJDn0nf4t53LgFAoB6Qg+jL+C giWpcsNUsen3mX8q2JH5LLIKtVv4EUIxbatJRS6T4TFuBRQZVEk5XYe5b1NF7lr9OuyI P++A== X-Gm-Message-State: AOAM5328KMKzBjudSuWtiUtUzwjJY1SGzK4FvEjPoxORM5ybhAbuTunt 4a14K7SXdN2FXimpyblDlZ4= X-Google-Smtp-Source: ABdhPJx6LQHNUFui3giapOyyc5YGOC6dtOEQkMgOyDblBANYn5obn77kkqsoELxUiLKfWRiM9E+4kA== X-Received: by 2002:adf:dd43:: with SMTP id u3mr25063060wrm.396.1612282956206; Tue, 02 Feb 2021 08:22:36 -0800 (PST) Received: from liuwe-devbox-debian-v2 ([51.145.34.42]) by smtp.gmail.com with ESMTPSA id e11sm32813367wrt.35.2021.02.02.08.22.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Feb 2021 08:22:35 -0800 (PST) Date: Tue, 2 Feb 2021 16:22:34 +0000 From: Wei Liu To: Juergen Gross Cc: xen-devel@lists.xenproject.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Wei Liu , Paul Durrant , "David S. Miller" , Jakub Kicinski , Igor Druzhinin , stable@vger.kernel.org Subject: Re: [PATCH] xen/netback: avoid race in xenvif_rx_ring_slots_available() Message-ID: <20210202162234.sf575hwoj4bngvpt@liuwe-devbox-debian-v2> References: <20210202070938.7863-1-jgross@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210202070938.7863-1-jgross@suse.com> User-Agent: NeoMutt/20180716 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Tue, Feb 02, 2021 at 08:09:38AM +0100, Juergen Gross wrote: > Since commit 23025393dbeb3b8b3 ("xen/netback: use lateeoi irq binding") > xenvif_rx_ring_slots_available() is no longer called only from the rx > queue kernel thread, so it needs to access the rx queue with the > associated queue held. > > Reported-by: Igor Druzhinin > Fixes: 23025393dbeb3b8b3 ("xen/netback: use lateeoi irq binding") > Cc: stable@vger.kernel.org > Signed-off-by: Juergen Gross Acked-by: Wei Liu