diff options
| author | Marc-André Lureau <marcandre.lureau@redhat.com> | 2016-07-27 01:15:02 +0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-07-29 00:33:47 +0300 |
| commit | e0547b59dc0ead4c605d3f02d1c8829630a1311b (patch) | |
| tree | eaf14da0e0754665932125bb44e0351e1073e4cc | |
| parent | 5be5f9be724d43fbec3d6f955a43bc64a62d55cc (diff) | |
| download | qemu-e0547b59dc0ead4c605d3f02d1c8829630a1311b.tar.gz | |
vhost: make vhost_dev_cleanup() idempotent
It is called on multiple code path, so make it safe to call several
times (note: I don't remember a reproducer here, but a function called
'cleanup' should probably be idempotent in my book)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/virtio/vhost.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 6b988e1478..9400b47e10 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1123,6 +1123,7 @@ fail: void vhost_dev_cleanup(struct vhost_dev *hdev) { int i; + for (i = 0; i < hdev->nvqs; ++i) { vhost_virtqueue_cleanup(hdev->vqs + i); } @@ -1137,8 +1138,12 @@ void vhost_dev_cleanup(struct vhost_dev *hdev) } g_free(hdev->mem); g_free(hdev->mem_sections); - hdev->vhost_ops->vhost_backend_cleanup(hdev); + if (hdev->vhost_ops) { + hdev->vhost_ops->vhost_backend_cleanup(hdev); + } assert(!hdev->log); + + memset(hdev, 0, sizeof(struct vhost_dev)); } /* Stop processing guest IO notifications in qemu. |