Merge branch 'next' into for-linus

Prepare input updates for 6.6 merge window.

1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index ad653b32b2f0..d75456adc62a 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1486,7 +1486,8 @@ static struct sk_buff *tun_napi_alloc_frags(struct tun_file *tfile,
 	skb->truesize += skb->data_len;
 
 	for (i = 1; i < it->nr_segs; i++) {
-		size_t fragsz = it->iov[i].iov_len;
+		const struct iovec *iov = iter_iov(it);
+		size_t fragsz = iov->iov_len;
 		struct page *page;
 		void *frag;
 
@@ -1976,6 +1977,14 @@ napi_busy:
 		int queue_len;
 
 		spin_lock_bh(&queue->lock);
+
+		if (unlikely(tfile->detached)) {
+			spin_unlock_bh(&queue->lock);
+			rcu_read_unlock();
+			err = -EBUSY;
+			goto free_skb;
+		}
+
 		__skb_queue_tail(queue, skb);
 		queue_len = skb_queue_len(queue);
 		spin_unlock(&queue->lock);
@@ -2511,6 +2520,13 @@ build:
 	if (tfile->napi_enabled) {
 		queue = &tfile->sk.sk_write_queue;
 		spin_lock(&queue->lock);
+
+		if (unlikely(tfile->detached)) {
+			spin_unlock(&queue->lock);
+			kfree_skb(skb);
+			return -EBUSY;
+		}
+
 		__skb_queue_tail(queue, skb);
 		spin_unlock(&queue->lock);
 		ret = 1;
@@ -3463,6 +3479,8 @@ static int tun_chr_open(struct inode *inode, struct file * file)
 
 	sock_set_flag(&tfile->sk, SOCK_ZEROCOPY);
 
+	/* tun groks IOCB_NOWAIT just fine, mark it as such */
+	file->f_mode |= FMODE_NOWAIT;
 	return 0;
 }