On Wed, Dec 28, 2016 at 04:09:31PM +0800, Jason Wang wrote:
> +static int tun_rx_batched(struct tun_file *tfile, struct sk_buff *skb,
> + int more)
> +{
> + struct sk_buff_head *queue = &tfile->sk.sk_write_queue;
> + struct sk_buff_head process_queue;
> + int qlen;
> + bool rcv = false;
> +
> + spin_lock(&queue->lock);Should this be spin_lock_bh()? Below and in tun_get_user() there are explicit local_bh_disable() calls so I guess BHs can interrupt us here and this would deadlock.
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