From: Cong Wang
Date: Mon, 22 Jan 2018 13:49:27 -0800
> Similarly to tx ring, xdp_rxq_info is only registered
> when !tfile->detached, so we need to avoid calling
> xdp_rxq_info_unreg() twice too. The helper tun_cleanup_tx_ring()
> already checks for this properly, so it is correct to put
> xdp_r
Similarly to tx ring, xdp_rxq_info is only registered
when !tfile->detached, so we need to avoid calling
xdp_rxq_info_unreg() twice too. The helper tun_cleanup_tx_ring()
already checks for this properly, so it is correct to put
xdp_rxq_info_unreg() just inside there.
Reported-by: syzbot+1c788d7ce0
