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 25DF3C433F5 for ; Tue, 26 Oct 2021 07:20:31 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 D6C28610FC for ; Tue, 26 Oct 2021 07:20:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org D6C28610FC 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 smtp4.osuosl.org (Postfix) with ESMTP id A3F9F404D7; Tue, 26 Oct 2021 07:20:30 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id a5UTM668wG3a; Tue, 26 Oct 2021 07:20:30 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp4.osuosl.org (Postfix) with ESMTPS id 66FB2404C9; Tue, 26 Oct 2021 07:20:29 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 4052DC0019; Tue, 26 Oct 2021 07:20:29 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0EF55C000E for ; Tue, 26 Oct 2021 07:20:27 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id C86F0608DE for ; Tue, 26 Oct 2021 07:20:26 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (1024-bit key) header.d=redhat.com Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id uxa99EIjS-7p for ; Tue, 26 Oct 2021 07:20:26 +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 smtp3.osuosl.org (Postfix) with ESMTPS id 320A7608DA for ; Tue, 26 Oct 2021 07:20:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1635232825; 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=oAUHS9ZYbyH+gY1nGB/VU6/S0d+NWeLrZAB0xQ5OIdc=; b=dbsndaNseHknmPI1eG7ubwbrIpJVXFH/FC62LRTSMyzeDr/GEkcVB9OrkroOjaeViHKQyx EckW3fLugZhipffxUrqVy/9xn0ZO8ztnMlFlg0EsVZ/z3TNWXZoBD/lj/jEMwOERgSWfNb 7xCtQq5//qHyZcQzIFuir3BN1hPnSjg= 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-280-Qcu1n0pGNUWHEDcoTtSAkg-1; Tue, 26 Oct 2021 03:20:21 -0400 X-MC-Unique: Qcu1n0pGNUWHEDcoTtSAkg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 377DD5074F; Tue, 26 Oct 2021 07:20:18 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-80.pek2.redhat.com [10.72.12.80]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1961F19C79; Tue, 26 Oct 2021 07:20:14 +0000 (UTC) From: Jason Wang To: mst@redhat.com, virtualization@lists.linux-foundation.org Subject: [PATCH V4 3/4] virtio-blk: don't let virtio core to validate used length Date: Tue, 26 Oct 2021 15:19:59 +0800 Message-Id: <20211026072000.8699-4-jasowang@redhat.com> In-Reply-To: <20211026072000.8699-1-jasowang@redhat.com> References: <20211026072000.8699-1-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Cc: f.hetzelt@tu-berlin.de, linux-kernel@vger.kernel.org, david.kaplan@amd.com, konrad.wilk@oracle.com 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" We never tries to use used length, so the patch prevents the virtio core from validating used length. Signed-off-by: Jason Wang --- drivers/block/virtio_blk.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index c7d05ff24084..36d645ec5002 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -1041,6 +1041,7 @@ static struct virtio_driver virtio_blk = { .feature_table_size = ARRAY_SIZE(features), .feature_table_legacy = features_legacy, .feature_table_size_legacy = ARRAY_SIZE(features_legacy), + .suppress_used_validation = 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 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 E5815C433FE for ; Tue, 26 Oct 2021 07:20:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEA5B60ED4 for ; Tue, 26 Oct 2021 07:20:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234407AbhJZHWw (ORCPT ); Tue, 26 Oct 2021 03:22:52 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:56954 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234374AbhJZHWs (ORCPT ); Tue, 26 Oct 2021 03:22:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1635232825; 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=oAUHS9ZYbyH+gY1nGB/VU6/S0d+NWeLrZAB0xQ5OIdc=; b=dbsndaNseHknmPI1eG7ubwbrIpJVXFH/FC62LRTSMyzeDr/GEkcVB9OrkroOjaeViHKQyx EckW3fLugZhipffxUrqVy/9xn0ZO8ztnMlFlg0EsVZ/z3TNWXZoBD/lj/jEMwOERgSWfNb 7xCtQq5//qHyZcQzIFuir3BN1hPnSjg= 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-280-Qcu1n0pGNUWHEDcoTtSAkg-1; Tue, 26 Oct 2021 03:20:21 -0400 X-MC-Unique: Qcu1n0pGNUWHEDcoTtSAkg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 377DD5074F; Tue, 26 Oct 2021 07:20:18 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-80.pek2.redhat.com [10.72.12.80]) by smtp.corp.redhat.com (Postfix) with ESMTP id 1961F19C79; Tue, 26 Oct 2021 07:20:14 +0000 (UTC) From: Jason Wang To: mst@redhat.com, virtualization@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, f.hetzelt@tu-berlin.de, david.kaplan@amd.com, konrad.wilk@oracle.com, Jason Wang Subject: [PATCH V4 3/4] virtio-blk: don't let virtio core to validate used length Date: Tue, 26 Oct 2021 15:19:59 +0800 Message-Id: <20211026072000.8699-4-jasowang@redhat.com> In-Reply-To: <20211026072000.8699-1-jasowang@redhat.com> References: <20211026072000.8699-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We never tries to use used length, so the patch prevents the virtio core from validating used length. Signed-off-by: Jason Wang --- drivers/block/virtio_blk.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index c7d05ff24084..36d645ec5002 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -1041,6 +1041,7 @@ static struct virtio_driver virtio_blk = { .feature_table_size = ARRAY_SIZE(features), .feature_table_legacy = features_legacy, .feature_table_size_legacy = ARRAY_SIZE(features_legacy), + .suppress_used_validation = true, .driver.name = KBUILD_MODNAME, .driver.owner = THIS_MODULE, .id_table = id_table, -- 2.25.1