vhost: fix the fd leak

[PATCH] vhost: fix the fd leak

Li Feng posted 1 patch 9 months, 1 week ago

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git fetch https://github.com/patchew-project/qemu tags/patchew/20230724073503.2808832-1-fengli@smartx.com

Maintainers: "Michael S. Tsirkin" <mst@redhat.com>

hw/virtio/vhost.c | 2 ++
1 file changed, 2 insertions(+)

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[PATCH] vhost: fix the fd leak

Posted by Li Feng 9 months, 1 week ago

When the vhost-user reconnect to the backend, the notifer should be
cleanup. Otherwise, the fd resource will be exhausted.

Fixes: f9a09ca3ea ("vhost: add support for configure interrupt")

Signed-off-by: Li Feng <fengli@smartx.com>
---
 hw/virtio/vhost.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index abf0d03c8d..e2f6ffb446 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -2044,6 +2044,8 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev, bool vrings)
     event_notifier_test_and_clear(
         &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier);
     event_notifier_test_and_clear(&vdev->config_notifier);
+    event_notifier_cleanup(
+        &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier);
 
     trace_vhost_dev_stop(hdev, vdev->name, vrings);
 
-- 
2.41.0