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 A2D62C433F5 for ; Wed, 27 Oct 2021 02:21:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8A1EE60F90 for ; Wed, 27 Oct 2021 02:21:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238283AbhJ0CYL (ORCPT ); Tue, 26 Oct 2021 22:24:11 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:39358 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238068AbhJ0CYA (ORCPT ); Tue, 26 Oct 2021 22:24:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1635301296; 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=B3DE/l9bMgJlSUozLDgXt2igQjOiVstZbxXMU4UJqxjTUpYEQtUvDOO4myc59CWtgYrhUS 5daT4fv8kXzdm6NBk+xgue1Ag/1x+med07e1alchKetTv8+3BjP+P30fbcpNjd74DOU/pw OvbuRtHJwvQ4hWP/M0QSbS3pedgta18= 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-278-VCKtKa4gMmKs6LtSic_IfQ-1; Tue, 26 Oct 2021 22:21:34 -0400 X-MC-Unique: VCKtKa4gMmKs6LtSic_IfQ-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 789FD112A0A0; Wed, 27 Oct 2021 02:21:33 +0000 (UTC) Received: from localhost.localdomain (ovpn-13-228.pek2.redhat.com [10.72.13.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id D392219729; Wed, 27 Oct 2021 02:21:30 +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 V5 3/4] virtio-blk: don't let virtio core to validate used length Date: Wed, 27 Oct 2021 10:21:06 +0800 Message-Id: <20211027022107.14357-4-jasowang@redhat.com> In-Reply-To: <20211027022107.14357-1-jasowang@redhat.com> References: <20211027022107.14357-1-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