virtio-mem: detach the element from the virtqueue when error occurs
If error occurs while processing the virtio request we should call
'virtqueue_detach_element' to detach the element from the virtqueue
before free the elem.
Signed-off-by: Li Qiang <liq3ea@163.com>
Message-Id: <20200816142245.17556-1-liq3ea@163.com>
Fixes: 910b25766b
("virtio-mem: Paravirtualized memory hot(un)plug")
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
parent
a5bd05800f
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@ -318,6 +318,7 @@ static void virtio_mem_handle_request(VirtIODevice *vdev, VirtQueue *vq)
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if (iov_to_buf(elem->out_sg, elem->out_num, 0, &req, len) < len) {
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virtio_error(vdev, "virtio-mem protocol violation: invalid request"
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" size: %d", len);
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virtqueue_detach_element(vq, elem, 0);
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g_free(elem);
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return;
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}
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@ -327,6 +328,7 @@ static void virtio_mem_handle_request(VirtIODevice *vdev, VirtQueue *vq)
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virtio_error(vdev, "virtio-mem protocol violation: not enough space"
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" for response: %zu",
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iov_size(elem->in_sg, elem->in_num));
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virtqueue_detach_element(vq, elem, 0);
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g_free(elem);
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return;
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}
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@ -348,6 +350,7 @@ static void virtio_mem_handle_request(VirtIODevice *vdev, VirtQueue *vq)
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default:
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virtio_error(vdev, "virtio-mem protocol violation: unknown request"
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" type: %d", type);
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virtqueue_detach_element(vq, elem, 0);
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g_free(elem);
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return;
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}
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