Re: [REGRESSION] 362899b ("macvtap: switch to use skb array") causes oops during teardown

This looks like a use-after-free. Could you pls try the following patch 
to see it if fixes your issue?

diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index a38c0da..070e329 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c

@@ -275,7 +275,6 @@ static void macvtap_put_queue(struct macvtap_queue *q)
         rtnl_unlock();

         synchronize_rcu();
-       skb_array_cleanup(&q->skb_array);
         sock_put(&q->sk);
  }

@@ -533,10 +532,8 @@ static void macvtap_sock_write_space(struct sock *sk)
  static void macvtap_sock_destruct(struct sock *sk)
  {
         struct macvtap_queue *q = container_of(sk, struct 

macvtap_queue, sk);
-       struct sk_buff *skb;

-       while ((skb = skb_array_consume(&q->skb_array)) != NULL)
-               kfree_skb(skb);
+       skb_array_cleanup(&q->skb_array);
  }

  static int macvtap_open(struct inode *inode, struct file *file)