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=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 49F1EC4727C for ; Fri, 25 Sep 2020 11:27:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E7284221EB for ; Fri, 25 Sep 2020 11:27:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="O/WhS1SE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728267AbgIYL1l (ORCPT ); Fri, 25 Sep 2020 07:27:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:51631 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726990AbgIYL1l (ORCPT ); Fri, 25 Sep 2020 07:27:41 -0400 Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1601033256; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OIYjG/eOf0A02Qd+6Up4W+Jt7X/3F3zVaDbUU4OQaQY=; b=O/WhS1SEB7dd6XjJKRiEeNJujnCiLweBn9Hf4gPr6c/wmKeSuj3oHRXFS5X/FK7laMtRgu d4QYepDj5gyLXR/PpOheMcNJdkx6Q1j7vLByKHWixOXvO0/ltMmUHhsUQoz/77PfcGCCRI pJtV5Pgze3E2S70giWRApa8QNM2mEyw= 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-460-z4Vu6R3RNealyVJDGYbeXg-1; Fri, 25 Sep 2020 07:27:33 -0400 X-MC-Unique: z4Vu6R3RNealyVJDGYbeXg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AD02A88EF0E; Fri, 25 Sep 2020 11:27:31 +0000 (UTC) Received: from [10.72.12.44] (ovpn-12-44.pek2.redhat.com [10.72.12.44]) by smtp.corp.redhat.com (Postfix) with ESMTP id 930765D9F7; Fri, 25 Sep 2020 11:27:15 +0000 (UTC) Subject: Re: [RFC PATCH 02/24] vhost-vdpa: fix vqs leak in vhost_vdpa_open() To: "Michael S. Tsirkin" Cc: lulu@redhat.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, rob.miller@broadcom.com, lingshan.zhu@intel.com, eperezma@redhat.com, hanand@xilinx.com, mhabets@solarflare.com, eli@mellanox.com, amorenoz@redhat.com, maxime.coquelin@redhat.com, stefanha@redhat.com, sgarzare@redhat.com References: <20200924032125.18619-1-jasowang@redhat.com> <20200924032125.18619-3-jasowang@redhat.com> <20200924053119-mutt-send-email-mst@kernel.org> From: Jason Wang Message-ID: Date: Fri, 25 Sep 2020 19:27:13 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200924053119-mutt-send-email-mst@kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2020/9/24 下午5:31, Michael S. Tsirkin wrote: > On Thu, Sep 24, 2020 at 11:21:03AM +0800, Jason Wang wrote: >> We need to free vqs during the err path after it has been allocated >> since vhost won't do that for us. >> >> Signed-off-by: Jason Wang > This is a bugfix too right? I don't see it posted separately ... A patch that is functional equivalent is posted here: https://www.mail-archive.com/virtualization@lists.linux-foundation.org/msg42558.html I'm a little bit lazy to use that one since this patch is probably wrote before that one. Thanks > >> --- >> drivers/vhost/vdpa.c | 11 ++++++++--- >> 1 file changed, 8 insertions(+), 3 deletions(-) >> >> diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c >> index 796fe979f997..9c641274b9f3 100644 >> --- a/drivers/vhost/vdpa.c >> +++ b/drivers/vhost/vdpa.c >> @@ -764,6 +764,12 @@ static void vhost_vdpa_free_domain(struct vhost_vdpa *v) >> v->domain = NULL; >> } >> >> +static void vhost_vdpa_cleanup(struct vhost_vdpa *v) >> +{ >> + vhost_dev_cleanup(&v->vdev); >> + kfree(v->vdev.vqs); >> +} >> + >> static int vhost_vdpa_open(struct inode *inode, struct file *filep) >> { >> struct vhost_vdpa *v; >> @@ -809,7 +815,7 @@ static int vhost_vdpa_open(struct inode *inode, struct file *filep) >> return 0; >> >> err_init_iotlb: >> - vhost_dev_cleanup(&v->vdev); >> + vhost_vdpa_cleanup(v); >> err: >> atomic_dec(&v->opened); >> return r; >> @@ -840,8 +846,7 @@ static int vhost_vdpa_release(struct inode *inode, struct file *filep) >> vhost_vdpa_free_domain(v); >> vhost_vdpa_config_put(v); >> vhost_vdpa_clean_irq(v); >> - vhost_dev_cleanup(&v->vdev); >> - kfree(v->vdev.vqs); >> + vhost_vdpa_cleanup(v); >> mutex_unlock(&d->mutex); >> >> atomic_dec(&v->opened); >> -- >> 2.20.1