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vhost: fix missing device pointer validity check

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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: cd6760da10 ("vhost: introduce async enqueue for split ring")

Signed-off-by: Patrick Fu <patrick.fu@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Patrick Fu 2020-07-21 11:23:04 +08:00 committed by Ferruh Yigit
parent d52a0478bb
commit 6a82bceb56
1 changed files with 3 additions and 0 deletions
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3
lib/librte_vhost/virtio_net.c
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@ -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",