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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A0D0C433F5 for ; Tue, 12 Oct 2021 06:53:34 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 195816103D for ; Tue, 12 Oct 2021 06:53:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 195816103D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id DF31E402E7; Tue, 12 Oct 2021 06:53:33 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id BI9XjvE5ygz9; Tue, 12 Oct 2021 06:53:32 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp2.osuosl.org (Postfix) with ESMTPS id 29C7840338; Tue, 12 Oct 2021 06:53:32 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B430DC0020; Tue, 12 Oct 2021 06:53:31 +0000 (UTC) Received: from smtp1.osuosl.org (smtp1.osuosl.org [IPv6:2605:bc80:3010::138]) by lists.linuxfoundation.org (Postfix) with ESMTP id BA398C001E for ; Tue, 12 Oct 2021 06:53:29 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 8D93E80FD7 for ; Tue, 12 Oct 2021 06:53:29 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp1.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id l9BrscUsw-YG for ; Tue, 12 Oct 2021 06:53:29 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by smtp1.osuosl.org (Postfix) with ESMTPS id 00C1D80F93 for ; Tue, 12 Oct 2021 06:53:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634021608; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=s2ogj96qw0F/nWk4lNNAWugjNmE+Gb6ryFL8XfASJec=; b=IprOBAhuZ6vw/DI+o54xW9OpjgRSELTI2BktRpTu54ZpxIb++HJ43AfYATrNl3CctsiKxZ nDydKOm5nQql3a8q+5Zu8zVBtg1gVkyt1NG9qoYVTI0hoInsVF+AJZKcSQAxL9rC/aPDj3 brbTflngl9TArKS7WhAVDGeshL924Dk= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-216-_rlm3CzkOFKr3c8f-nXvDw-1; Tue, 12 Oct 2021 02:53:24 -0400 X-MC-Unique: _rlm3CzkOFKr3c8f-nXvDw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A7CBB100792F; Tue, 12 Oct 2021 06:53:07 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-111.pek2.redhat.com [10.72.13.111]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2C81B5F4E0; Tue, 12 Oct 2021 06:53:04 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Subject: [PATCH V2 10/12] virtio-net: don't let virtio core to validate used length Date: Tue, 12 Oct 2021 14:52:25 +0800 Message-Id: <20211012065227.9953-11-jasowang@redhat.com> In-Reply-To: <20211012065227.9953-1-jasowang@redhat.com> References: <20211012065227.9953-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Cc: konrad.wilk@oracle.com, f.hetzelt@tu-berlin.de, linux-kernel@vger.kernel.org, david.kaplan@amd.com, virtualization@lists.linux-foundation.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" For RX virtuqueue, the used length is validated in all the three paths (big, small and mergeable). For control vq, we never tries to use used length. So this patch forbids the core to validate the used length. Signed-off-by: Jason Wang --- drivers/net/virtio_net.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 79bd2585ec6b..f2f9ea167020 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -3384,6 +3384,7 @@ static struct virtio_driver virtio_net_driver = { .feature_table_size = ARRAY_SIZE(features), .feature_table_legacy = features_legacy, .feature_table_size_legacy = ARRAY_SIZE(features_legacy), + .validate_used = true, .driver.name = KBUILD_MODNAME, .driver.owner = THIS_MODULE, .id_table = id_table, -- 2.25.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization