netfilter: nf_tables: skip set commit for deleted/destroyed sets

JIRA: https://issues.redhat.com/browse/RHEL-21443
Upstream Status: commit 7315dc1

commit 7315dc1
Author: Pablo Neira Ayuso <pablo@netfilter.org>
Date:   Tue Dec 19 19:44:49 2023 +0100

    netfilter: nf_tables: skip set commit for deleted/destroyed sets

    NFT_MSG_DELSET deactivates all elements in the set, skip
    set->ops->commit() to avoid the unnecessary clone (for the pipapo case)
    as well as the sync GC cycle, which could deactivate again expired
    elements in such set.

    Fixes: 5f68718 ("netfilter: nf_tables: GC transaction API to avoid race with control plane")
    Reported-by: Kevin Rich <kevinrich1337@gmail.com>
    Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

Signed-off-by: Florian Westphal <fwestpha@redhat.com>

Author: fw-strlen

net/netfilter/nf_tables_api.c

@@ -9579,7 +9579,7 @@ static void nft_set_commit_update(struct list_head *set_update_list)
 	list_for_each_entry_safe(set, next, set_update_list, pending_update) {
 		list_del_init(&set->pending_update);
 
-		if (!set->ops->commit)
+		if (!set->ops->commit || set->dead)
 			continue;
 
 		set->ops->commit(set);