netfilter: nfnetlink_queue: drop bogus WARN_ON

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>

diff --git a/net/netfilter/nfnetlink_queue.c b/net/netfilter/nfnetlink_queue.c
index f1c3175..55e28e1 100644 (file)
--- 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;