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 9DA4AC433F5 for ; Tue, 12 Oct 2021 06:53:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 541B56103D for ; Tue, 12 Oct 2021 06:53:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233995AbhJLGzl (ORCPT ); Tue, 12 Oct 2021 02:55:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:50890 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233690AbhJLGz1 (ORCPT ); Tue, 12 Oct 2021 02:55:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634021606; 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=yzRx2MNhRgyMZdCdlWXIwUyzg9b7lQf3CHvnXsY/pfA=; b=Wf79MG9IRVcIERqjlRDyZouOmHz1CgAJg9eUyUUeHxHRBvJigvDiYuyZHvpf7flq04/FYX Nan0STbYXlOLKaoUg0hG1TpRFh1h54DMZ0FlthSQ6eL26I5VduCvhoFjleHvkgM/KFPuS+ UuBb8v79K73FRXvI3gw2QkzWQTf4wQw= 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-364-IrcA9wbzOmySRwJ9h72gDQ-1; Tue, 12 Oct 2021 02:53:22 -0400 X-MC-Unique: IrcA9wbzOmySRwJ9h72gDQ-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 01696801A93; Tue, 12 Oct 2021 06:53:14 +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 6E81C5F4E0; Tue, 12 Oct 2021 06:53:11 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Cc: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, f.hetzelt@tu-berlin.de, david.kaplan@amd.com, konrad.wilk@oracle.com Subject: [PATCH V2 12/12] virtio-scsi: don't let virtio core to validate used buffer length Date: Tue, 12 Oct 2021 14:52:27 +0800 Message-Id: <20211012065227.9953-13-jasowang@redhat.com> In-Reply-To: <20211012065227.9953-1-jasowang@redhat.com> References: <20211012065227.9953-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 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/scsi/virtio_scsi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index c25ce8f0e0af..2af33fc36f8a 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -977,6 +977,7 @@ static unsigned int features[] = { static struct virtio_driver virtio_scsi_driver = { .feature_table = features, .feature_table_size = ARRAY_SIZE(features), + .validate_used = true, .driver.name = KBUILD_MODNAME, .driver.owner = THIS_MODULE, .id_table = id_table, -- 2.25.1