From: Peilin Ye <yepeilin.cs@gmail.com>
To: Eric Dumazet <edumazet@google.com>,
"David S. Miller" <davem@davemloft.net>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
David Ahern <dsahern@kernel.org>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Peilin Ye <peilin.ye@bytedance.com>,
Cong Wang <cong.wang@bytedance.com>,
Kuniyuki Iwashima <kuniyu@amazon.com>,
Alexei Starovoitov <ast@kernel.org>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Peilin Ye <yepeilin.cs@gmail.com>
Subject: [PATCH net] udp: Use WARN_ON_ONCE() in udp_read_skb()
Date: Tue, 20 Sep 2022 17:59:15 -0700 [thread overview]
Message-ID: <20220921005915.2697-1-yepeilin.cs@gmail.com> (raw)
From: Peilin Ye <peilin.ye@bytedance.com>
Prevent udp_read_skb() from flooding the syslog.
Suggested-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Peilin Ye <peilin.ye@bytedance.com>
---
net/ipv4/udp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index cd72158e953a..560d9eadeaa5 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1821,7 +1821,7 @@ int udp_read_skb(struct sock *sk, skb_read_actor_t recv_actor)
continue;
}
- WARN_ON(!skb_set_owner_sk_safe(skb, sk));
+ WARN_ON_ONCE(!skb_set_owner_sk_safe(skb, sk));
used = recv_actor(sk, skb);
if (used <= 0) {
if (!copied)
--
2.20.1
next reply other threads:[~2022-09-21 0:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-21 0:59 Peilin Ye [this message]
2022-09-22 14:10 ` patchwork-bot+netdevbpf
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