Commit 37f0e514 authored by Cong Wang's avatar Cong Wang Committed by Alexei Starovoitov
Browse files

skmsg: Lock ingress_skb when purging 



Currently we purge the ingress_skb queue only when psock
refcnt goes down to 0, so locking the queue is not necessary,
but in order to be called during ->close, we have to lock it
here.

Signed-off-by: default avatarCong Wang <cong.wang@bytedance.com>
Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarJakub Sitnicki <jakub@cloudflare.com>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210331023237.41094-2-xiyou.wangcong@gmail.com
parent e27bfefb

net/core/skmsg.c

+1 −1
Original line number Diff line number Diff line
@@ -634,7 +634,7 @@ static void sk_psock_zap_ingress(struct sk_psock *psock) 
{

	struct sk_buff *skb;



	while ((skb = __skb_dequeue(&psock->ingress_skb)) != NULL) {

	while ((skb = skb_dequeue(&psock->ingress_skb)) != NULL) {

		skb_bpf_redirect_clear(skb);

		kfree_skb(skb);

	}