netdev - [PATCH net-next 6/8] net: use DEBUG_NET_WARN_ON_ONCE() in skb_release_head

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Date:   Tue,  7 Jun 2022 10:17:30 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: [PATCH net-next 6/8] net: use DEBUG_NET_WARN_ON_ONCE() in skb_release_head_state()

From: Eric Dumazet <edumazet@...gle.com>

Remove this check from fast path unless CONFIG_DEBUG_NET=y

Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
 net/core/skbuff.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index b661040c100efbb59aea58ed31247f820292bd64..cf83d9b8f41dc28ae11391f2651e5abee3dcde8f 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -728,7 +728,7 @@ void skb_release_head_state(struct sk_buff *skb)
 {
 	skb_dst_drop(skb);
 	if (skb->destructor) {
-		WARN_ON(in_hardirq());
+		DEBUG_NET_WARN_ON_ONCE(in_hardirq());
 		skb->destructor(skb);
 	}
 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
-- 
2.36.1.255.ge46751e96f-goog