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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3E51C352AA for ; Wed, 2 Oct 2019 01:35:26 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 CA6D020873 for ; Wed, 2 Oct 2019 01:35:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA6D020873 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.vnet.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:50246 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iFTY5-00053Y-BF for qemu-devel@archiver.kernel.org; Tue, 01 Oct 2019 21:35:25 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40716) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iFRsd-00023R-BS for qemu-devel@nongnu.org; Tue, 01 Oct 2019 19:48:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iFRsW-0002ab-Px for qemu-devel@nongnu.org; Tue, 01 Oct 2019 19:48:31 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:20604) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iFRsV-00023G-Sr; Tue, 01 Oct 2019 19:48:24 -0400 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x91NlQIw074864; Tue, 1 Oct 2019 19:47:59 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vcdv2vq50-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Oct 2019 19:47:59 -0400 Received: from m0098409.ppops.net (m0098409.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.27/8.16.0.27) with SMTP id x91NlwlR076006; Tue, 1 Oct 2019 19:47:58 -0400 Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0a-001b2d01.pphosted.com with ESMTP id 2vcdv2vq4f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Oct 2019 19:47:58 -0400 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id x91Njod9031648; Tue, 1 Oct 2019 23:47:57 GMT Received: from b01cxnp22033.gho.pok.ibm.com (b01cxnp22033.gho.pok.ibm.com [9.57.198.23]) by ppma02wdc.us.ibm.com with ESMTP id 2v9y587fd5-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Oct 2019 23:47:57 +0000 Received: from b01ledav001.gho.pok.ibm.com (b01ledav001.gho.pok.ibm.com [9.57.199.106]) by b01cxnp22033.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x91NlvXm43123016 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 1 Oct 2019 23:47:57 GMT Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 10D1A2805E; Tue, 1 Oct 2019 23:47:57 +0000 (GMT) Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E8AB328059; Tue, 1 Oct 2019 23:47:56 +0000 (GMT) Received: from localhost (unknown [9.53.179.213]) by b01ledav001.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 1 Oct 2019 23:47:56 +0000 (GMT) From: Michael Roth To: qemu-devel@nongnu.org Subject: [PATCH 82/97] libvhost-user: fix SLAVE_SEND_FD handling Date: Tue, 1 Oct 2019 18:46:01 -0500 Message-Id: <20191001234616.7825-83-mdroth@linux.vnet.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191001234616.7825-1-mdroth@linux.vnet.ibm.com> References: <20191001234616.7825-1-mdroth@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-10-01_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910010203 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-stable@nongnu.org, Johannes Berg , "Michael S . Tsirkin" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Johannes Berg It doesn't look like this could possibly work properly since VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD is defined to 10, but the dev->protocol_features has a bitmap. I suppose the peer this was tested with also supported VHOST_USER_PROTOCOL_F_LOG_SHMFD, in which case the test would always be false, but nevertheless the code seems wrong. Use has_feature() to fix this. Fixes: d84599f56c82 ("libvhost-user: support host notifier") Signed-off-by: Johannes Berg Message-Id: <20190903200422.11693-1-johannes@sipsolutions.net> Reviewed-by: Tiwei Bie Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin (cherry picked from commit 8726b70b449896f1211f869ec4f608904f027207) Signed-off-by: Michael Roth --- contrib/libvhost-user/libvhost-user.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c index e08d6c7b97..516d0de7bb 100644 --- a/contrib/libvhost-user/libvhost-user.c +++ b/contrib/libvhost-user/libvhost-user.c @@ -1085,7 +1085,8 @@ bool vu_set_queue_host_notifier(VuDev *dev, VuVirtq *vq, int fd, vmsg.fd_num = fd_num; - if ((dev->protocol_features & VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD) == 0) { + if (!has_feature(dev->protocol_features, + VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD)) { return false; } -- 2.17.1