[PATCH net 2/2] netfilter: nf_tables: skip set commit for deleted/destroyed sets

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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: 5f68718b34a5 ("netfilter: nf_tables: GC transaction API to avoid race with control plane")
Reported-by: Kevin Rich <kevinrich1337@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
 net/netfilter/nf_tables_api.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index c5c17c6e80ed..be04af433988 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -9887,7 +9887,7 @@ static void nft_set_commit_update(struct list_head *set_update_list)
 	list_for_each_entry_safe(set, next, set_update_list, pending_update) {
-		if (!set->ops->commit)
+		if (!set->ops->commit || set->dead)

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