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| author | Stefano Garzarella <sgarzare@redhat.com> | 2022-03-23 18:36:23 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-24 18:36:35 -0700 |
| commit | 4b5f1ad5566ada230aaa2ce861b28d1895f1ea68 (patch) | |
| tree | 7b62e09c1ff7f9d7d671517eec422846231ee630 /net | |
| parent | 9fe087dda5bf097007b263664051bc0e84f6580d (diff) | |
| download | linux-4b5f1ad5566ada230aaa2ce861b28d1895f1ea68.tar.gz linux-4b5f1ad5566ada230aaa2ce861b28d1895f1ea68.tar.bz2 linux-4b5f1ad5566ada230aaa2ce861b28d1895f1ea68.zip | |
vsock/virtio: initialize vdev->priv before using VQs
When we fill VQs with empty buffers and kick the host, it may send
an interrupt. `vdev->priv` must be initialized before this since it
is used in the virtqueue callbacks.
Fixes: 0deab087b16a ("vsock/virtio: use RCU to avoid use-after-free on the_virtio_vsock")
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/vmw_vsock/virtio_transport.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/vmw_vsock/virtio_transport.c b/net/vmw_vsock/virtio_transport.c index 5afc194a58bb..3e5513934c9f 100644 --- a/net/vmw_vsock/virtio_transport.c +++ b/net/vmw_vsock/virtio_transport.c @@ -622,6 +622,8 @@ static int virtio_vsock_probe(struct virtio_device *vdev) INIT_WORK(&vsock->event_work, virtio_transport_event_work); INIT_WORK(&vsock->send_pkt_work, virtio_transport_send_pkt_work); + vdev->priv = vsock; + mutex_lock(&vsock->tx_lock); vsock->tx_run = true; mutex_unlock(&vsock->tx_lock); @@ -639,7 +641,6 @@ static int virtio_vsock_probe(struct virtio_device *vdev) if (virtio_has_feature(vdev, VIRTIO_VSOCK_F_SEQPACKET)) vsock->seqpacket_allow = true; - vdev->priv = vsock; rcu_assign_pointer(the_virtio_vsock, vsock); mutex_unlock(&the_virtio_vsock_mutex); |