From patchwork Tue Aug 31 10:36:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yongji Xie X-Patchwork-Id: 12466913 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 05465C43216 for ; Tue, 31 Aug 2021 10:38:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEFFF60FD8 for ; Tue, 31 Aug 2021 10:38:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241095AbhHaKjq (ORCPT ); Tue, 31 Aug 2021 06:39:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241133AbhHaKib (ORCPT ); Tue, 31 Aug 2021 06:38:31 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BB75C0612AC for ; Tue, 31 Aug 2021 03:37:26 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id n13-20020a17090a4e0d00b0017946980d8dso1623548pjh.5 for ; Tue, 31 Aug 2021 03:37:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=C07xaPneecmbOG/2S1p4CJrqrccH6w7GBsTKs/jZSu8=; b=rvwTBW/chQwCs1ysBZtuOOGvFV8AoCOi2faEBCshYAhgiqxCHJHsLU0lvpLAKEC53A 1Z5uB9MoFNJQ139cNkZQqj6o8M0OCSAnRE+xkYtpVBsgR1y8wlVPd5z+MlKaFK0bUjd+ 7w/E8RZ493mxhz0AMH5vxE5KH84DplzEYfrK5DhdpkG4TE+28RB7vzCAkgB0SnPeRW9C TJdrtE5YLJ+ARxPEjRFIKdCcIyOOqIynFi2Ax9SG5k5/U0yencRx0YXDRFcVDWOziXrf SyQglSnRCjXJD8ieWRepwEggqDxJ4QqyQPDRHM97ybs3J0jftdCffrf22EKTlZaiK/6L JznQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=C07xaPneecmbOG/2S1p4CJrqrccH6w7GBsTKs/jZSu8=; b=bzo2HSolb+oncx91iL6mkIdtoPv09UTmwAesHeVmyGpPzuC4gm6mVWjCB0aLqto41p xxblBmsw6uIptsi7xgubvcjLc0AJMFs3B4iaULvNubff4DF9TUSaGvmvhBGVsUISi6bk tAKof8Dl+k4ZaXYEsKOkuollvbCFicK91/TsRBh6vv5e9X6dl1yfMhadc1ZWOu8oRgJ4 iYGVzUGfe5jQV9sRa50/hUeVeGDwQ276pIo54K8kEWOuPoUt0+e60NCx1+aWGXguTEE1 VlxkA8qWOFuWEvS2pw5AM1+DgEi+GTbiThuDqsH+BaTOUgn+3f5bHjhYMLNxjvYGtxOU ULoQ== X-Gm-Message-State: AOAM531zoV/jPbdMWG3NALLT/BAzRxlkDC8Rtcgnt4syBIqXAkUtFiyS OPHpr2FJAt2SuqLB2PS2jN5T X-Google-Smtp-Source: ABdhPJxayXvJMyHxVP3rT4nojLNgd/ffmXKTeSHlwaQVlvgNs+l4lB1isTVsta0CNNQ1iuiXOsbF6w== X-Received: by 2002:a17:90a:d590:: with SMTP id v16mr4584722pju.205.1630406245702; Tue, 31 Aug 2021 03:37:25 -0700 (PDT) Received: from localhost ([139.177.225.253]) by smtp.gmail.com with ESMTPSA id l127sm7169012pfl.99.2021.08.31.03.37.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Aug 2021 03:37:25 -0700 (PDT) From: Xie Yongji To: mst@redhat.com, jasowang@redhat.com, stefanha@redhat.com, sgarzare@redhat.com, parav@nvidia.com, hch@infradead.org, christian.brauner@canonical.com, rdunlap@infradead.org, willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com, dan.carpenter@oracle.com, joro@8bytes.org, gregkh@linuxfoundation.org, zhe.he@windriver.com, xiaodong.liu@intel.com, joe@perches.com, robin.murphy@arm.com, will@kernel.org, john.garry@huawei.com Cc: songmuchun@bytedance.com, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, kvm@vger.kernel.org, linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH v13 06/13] vhost-vdpa: Handle the failure of vdpa_reset() Date: Tue, 31 Aug 2021 18:36:27 +0800 Message-Id: <20210831103634.33-7-xieyongji@bytedance.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210831103634.33-1-xieyongji@bytedance.com> References: <20210831103634.33-1-xieyongji@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org The vdpa_reset() may fail now. This adds check to its return value and fail the vhost_vdpa_open(). Signed-off-by: Xie Yongji Acked-by: Jason Wang Reviewed-by: Stefano Garzarella --- drivers/vhost/vdpa.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index ab7a24613982..ab39805ecff1 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -116,12 +116,13 @@ static void vhost_vdpa_unsetup_vq_irq(struct vhost_vdpa *v, u16 qid) irq_bypass_unregister_producer(&vq->call_ctx.producer); } -static void vhost_vdpa_reset(struct vhost_vdpa *v) +static int vhost_vdpa_reset(struct vhost_vdpa *v) { struct vdpa_device *vdpa = v->vdpa; - vdpa_reset(vdpa); v->in_batch = 0; + + return vdpa_reset(vdpa); } static long vhost_vdpa_get_device_id(struct vhost_vdpa *v, u8 __user *argp) @@ -865,7 +866,9 @@ static int vhost_vdpa_open(struct inode *inode, struct file *filep) return -EBUSY; nvqs = v->nvqs; - vhost_vdpa_reset(v); + r = vhost_vdpa_reset(v); + if (r) + goto err; vqs = kmalloc_array(nvqs, sizeof(*vqs), GFP_KERNEL); if (!vqs) {