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 0A678C433EF for ; Tue, 19 Oct 2021 07:04:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4C20611EF for ; Tue, 19 Oct 2021 07:04:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234483AbhJSHGv (ORCPT ); Tue, 19 Oct 2021 03:06:51 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:45783 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234469AbhJSHGr (ORCPT ); Tue, 19 Oct 2021 03:06:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634627074; 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=jDUxMJIQblVWX+exZQfHW/3h1Wf0cvLtDt87iczI3gQ=; b=KH7P4YrMAszvrzijypZfsKJ+Hxt1NVzh8WrAxuzHYDgRBSLbbMNXSVZ7bcrZgdmUHUvq9e o8e33DeswtE0+BWU8eoM2MUHJzINkVlK5OWhFDj/V0l5W5wwMa761VTJmlHAiFzYsZwyup 3RBs3jhceowkjNowTV71Yb10EVpF9MA= 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-386-bjnOU663OTypF7ZNG_xhyg-1; Tue, 19 Oct 2021 03:04:31 -0400 X-MC-Unique: bjnOU663OTypF7ZNG_xhyg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4BC7780A5C4; Tue, 19 Oct 2021 07:04:30 +0000 (UTC) Received: from localhost.localdomain (ovpn-12-155.pek2.redhat.com [10.72.12.155]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7B02670956; Tue, 19 Oct 2021 07:04:22 +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 V3 09/10] virtio-blk: don't let virtio core to validate used length Date: Tue, 19 Oct 2021 15:01:51 +0800 Message-Id: <20211019070152.8236-10-jasowang@redhat.com> In-Reply-To: <20211019070152.8236-1-jasowang@redhat.com> References: <20211019070152.8236-1-jasowang@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 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 10bc0879e618..6f19dcb7c3aa 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -1010,6 +1010,7 @@ 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