Currently, postcopy_ufd is initialized to 0 implicitly, so fd 0
could be closed unexpectedly by vhost_backend_cleanup(). Fix this
issue by initializing postcopy_ufd to -1 explicitly.

Fixes: 9eefef3b5970 ("vhost: introduce postcopy advise message")

Signed-off-by: Tiwei Bie <tiwei....@intel.com>
---
 lib/librte_vhost/vhost.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c
index 047ee535c..70ac6bc9c 100644
--- a/lib/librte_vhost/vhost.c
+++ b/lib/librte_vhost/vhost.c
@@ -344,6 +344,7 @@ vhost_new_device(void)
        dev->flags = VIRTIO_DEV_BUILTIN_VIRTIO_NET;
        dev->slave_req_fd = -1;
        dev->vdpa_dev_id = -1;
+       dev->postcopy_ufd = -1;
        rte_spinlock_init(&dev->slave_req_lock);
 
        return i;
-- 
2.19.1

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