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authorStefano Garzarella <sgarzare@redhat.com>2019-07-30 17:43:32 +0200
committerDavid S. Miller <davem@davemloft.net>2019-07-30 15:00:00 -0700
commit9632e9f61bc4191411c47933abe5f2d93c578f5e (patch)
tree39df578365d29e1705e41a48d4a8b228cfb1c405 /net/vmw_vsock
parentb89d882dc9fc279c8acbf1df71d51b22394186d5 (diff)
downloadlinux-9632e9f61bc4191411c47933abe5f2d93c578f5e.tar.bz2
vsock/virtio: fix locking in virtio_transport_inc_tx_pkt()
fwd_cnt and last_fwd_cnt are protected by rx_lock, so we should use the same spinlock also if we are in the TX path. Move also buf_alloc under the same lock. Signed-off-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/vmw_vsock')
-rw-r--r--net/vmw_vsock/virtio_transport_common.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index a85559d4d974..34a2b42313b7 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -210,11 +210,11 @@ static void virtio_transport_dec_rx_pkt(struct virtio_vsock_sock *vvs,
void virtio_transport_inc_tx_pkt(struct virtio_vsock_sock *vvs, struct virtio_vsock_pkt *pkt)
{
- spin_lock_bh(&vvs->tx_lock);
+ spin_lock_bh(&vvs->rx_lock);
vvs->last_fwd_cnt = vvs->fwd_cnt;
pkt->hdr.fwd_cnt = cpu_to_le32(vvs->fwd_cnt);
pkt->hdr.buf_alloc = cpu_to_le32(vvs->buf_alloc);
- spin_unlock_bh(&vvs->tx_lock);
+ spin_unlock_bh(&vvs->rx_lock);
}
EXPORT_SYMBOL_GPL(virtio_transport_inc_tx_pkt);