vhost: fix virtqueue initialization

This patches fixes virtqueue initialization issue causing
segfault or file descriptor being closed unexpectedly.

The wrong index was passed to init_vring_queue() by
alloc_vring_queue() when a hole in the virtqueue array was
met.

Fixes: 8acd7c213353 ("vhost: fix virtqueues metadata allocation")
Cc: stable@dpdk.org
Reported-by: Yu Jiang <yux.jiang@intel.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>
Tested-by: Yu Jiang <yux.jiang@intel.com>

diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 8a151a9..b83cf63 100644 (file)
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -605,7 +605,7 @@ alloc_vring_queue(struct virtio_net *dev, uint32_t vring_idx)
                }
 
                dev->virtqueue[i] = vq;
-               init_vring_queue(dev, vring_idx);
+               init_vring_queue(dev, i);
                rte_spinlock_init(&vq->access_lock);
                vq->avail_wrap_counter = 1;
                vq->used_wrap_counter = 1;