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skmsg: Lock ingress_skb when purging

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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: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Jakub Sitnicki <jakub@cloudflare.com>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210331023237.41094-2-xiyou.wangcong@gmail.com
This commit is contained in:
Cong Wang 2021-03-30 19:32:22 -07:00 committed by Alexei Starovoitov
parent e27bfefb21
commit 37f0e514db
1 changed files with 1 additions and 1 deletions
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2
net/core/skmsg.c
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@ -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);
}