[PATCH 4.19 132/323] netfilter: nf_tables: unbind non-anonymous set if rule construction fails

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>

[ 3e70489721b6c870252c9082c496703677240f53 ]

Otherwise a dangling reference to a rule object that is gone remains
in the set binding list.

Fixes: 26b5a5712eb8 ("netfilter: nf_tables: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain")
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/netfilter/nf_tables_api.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -3838,6 +3838,8 @@ void nf_tables_deactivate_set(const stru
 		nft_set_trans_unbind(ctx, set);
 		if (nft_set_is_anonymous(set))
 			nft_deactivate_next(ctx->net, set);
+		else
+			list_del_rcu(&binding->list);
 
 		set->use--;
 		break;