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From: Pablo Neira Ayuso <pablo@netfilter.org>
To: netfilter-devel@vger.kernel.org
Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org,
	pabeni@redhat.com, edumazet@google.com, fw@strlen.de
Subject: [PATCH net 1/2] netfilter: nfnetlink_queue: drop bogus WARN_ON
Date: Thu, 11 Jul 2024 11:39:47 +0200	[thread overview]
Message-ID: <20240711093948.3816-2-pablo@netfilter.org> (raw)
In-Reply-To: <20240711093948.3816-1-pablo@netfilter.org>

From: Florian Westphal <fw@strlen.de>

Happens when rules get flushed/deleted while packet is out, so remove
this WARN_ON.

This WARN exists in one form or another since v4.14, no need to backport
this to older releases, hence use a more recent fixes tag.

Fixes: 3f8019688894 ("netfilter: move nf_reinject into nfnetlink_queue modules")
Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202407081453.11ac0f63-lkp@intel.com
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/nfnetlink_queue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index f1c31757e496..55e28e1da66e 100644
--- a/net/netfilter/nfnetlink_queue.c
+++ b/net/netfilter/nfnetlink_queue.c
@@ -325,7 +325,7 @@ static void nf_reinject(struct nf_queue_entry *entry, unsigned int verdict)
 	hooks = nf_hook_entries_head(net, pf, entry->state.hook);
 
 	i = entry->hook_index;
-	if (WARN_ON_ONCE(!hooks || i >= hooks->num_hook_entries)) {
+	if (!hooks || i >= hooks->num_hook_entries) {
 		kfree_skb_reason(skb, SKB_DROP_REASON_NETFILTER_DROP);
 		nf_queue_entry_free(entry);
 		return;
-- 
2.30.2


  reply	other threads:[~2024-07-11  9:40 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-07-11  9:39 [PATCH net 0/2] Netfilter fixes for net Pablo Neira Ayuso
2024-07-11  9:39 ` Pablo Neira Ayuso [this message]
2024-07-11 11:10   ` [PATCH net 1/2] netfilter: nfnetlink_queue: drop bogus WARN_ON patchwork-bot+netdevbpf
2024-07-11  9:39 ` [PATCH net 2/2] netfilter: nf_tables: prefer nft_chain_validate Pablo Neira Ayuso

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