diff options
| -rw-r--r-- | net/core/skmsg.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/net/core/skmsg.c b/net/core/skmsg.c index 514bc9f6f8ae..25cdbb20f3a0 100644 --- a/net/core/skmsg.c +++ b/net/core/skmsg.c @@ -423,9 +423,16 @@ static int sk_psock_skb_ingress_enqueue(struct sk_buff *skb, struct sock *sk, struct sk_msg *msg) { - int num_sge = skb_to_sgvec(skb, msg->sg.data, 0, skb->len); - int copied; + int num_sge, copied; + /* skb linearize may fail with ENOMEM, but lets simply try again + * later if this happens. Under memory pressure we don't want to + * drop the skb. We need to linearize the skb so that the mapping + * in skb_to_sgvec can not error. + */ + if (skb_linearize(skb)) + return -EAGAIN; + num_sge = skb_to_sgvec(skb, msg->sg.data, 0, skb->len); if (unlikely(num_sge < 0)) { kfree(msg); return num_sge; |