From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: "Fu, Patrick" <patrick.fu@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"maxime.coquelin@redhat.com" <maxime.coquelin@redhat.com>
Subject: Re: [dpdk-dev] [PATCH v2] vhost: fix missing null dev pointer check
Date: Fri, 17 Jul 2020 08:08:36 +0000 [thread overview]
Message-ID: <MN2PR11MB406376CC038CED081D2619FF9C7C0@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20200716153758.2895041-1-patrick.fu@intel.com>
> -----Original Message-----
> From: Fu, Patrick <patrick.fu@intel.com>
> Sent: Thursday, July 16, 2020 11:38 PM
> To: dev@dpdk.org; maxime.coquelin@redhat.com; Xia, Chenbo
> <chenbo.xia@intel.com>
> Cc: Fu, Patrick <patrick.fu@intel.com>
> Subject: [PATCH v2] vhost: fix missing null dev pointer check
>
> From: Patrick Fu <patrick.fu@intel.com>
>
> This patch adds the check of dev pointer in vhost async enqueue completion poll.
> If a NULL dev pointer detected, the poll function returns immediately.
>
> Coverity issue: 360839
> Fixes: cd6760da1076 ("vhost: introduce async enqueue for split ring")
>
> Signed-off-by: Patrick Fu <patrick.fu@intel.com>
> ---
> v2:
> - change fixline number
>
> lib/librte_vhost/virtio_net.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c index
> 1d0be3dd4..235c31e28 100644
> --- a/lib/librte_vhost/virtio_net.c
> +++ b/lib/librte_vhost/virtio_net.c
> @@ -1635,6 +1635,9 @@ uint16_t rte_vhost_poll_enqueue_completed(int vid,
> uint16_t queue_id,
> uint16_t start_idx, pkts_idx, vq_size;
> uint64_t *async_pending_info;
>
> + if (!dev)
> + return 0;
> +
> VHOST_LOG_DATA(DEBUG, "(%d) %s\n", dev->vid, __func__);
> if (unlikely(!is_valid_virt_queue_idx(queue_id, 0, dev->nr_vring))) {
> VHOST_LOG_DATA(ERR, "(%d) %s: invalid virtqueue idx %d.\n",
> --
> 2.18.4
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>
next prev parent reply other threads:[~2020-07-17 8:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-14 6:00 [dpdk-dev] [PATCH v1] " patrick.fu
2020-07-16 15:37 ` [dpdk-dev] [PATCH v2] " patrick.fu
2020-07-17 8:08 ` Xia, Chenbo [this message]
2020-07-17 13:10 ` Ferruh Yigit
2020-07-20 15:55 ` Maxime Coquelin
2020-07-20 16:49 ` Ferruh Yigit
2020-07-21 3:23 ` [dpdk-dev] [PATCH v3] vhost: fix missing device pointer validity check patrick.fu
2020-07-21 8:36 ` Maxime Coquelin
2020-07-21 14:51 ` Ferruh Yigit
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