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

commit 7315dc1e12 upstream.

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: 5f68718b34 ("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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/1175/head
Pablo Neira Ayuso 2023-12-19 19:44:49 +01:00 committed by Greg Kroah-Hartman
parent 4768430d5a
commit 0105571f80
1 changed files with 1 additions and 1 deletions
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2
net/netfilter/nf_tables_api.c
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@ -9480,7 +9480,7 @@ 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);