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[PATCH 3.16 191/306] netfilter: nf_tables: destroy the set if fail to add transaction

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  [PATCH 3.16 191/306] netfilter: nf_tables: destroy the set if  fail to add transaction Ben Hutchings <ben@decadent.org.uk> - 2017-02-16 01:40 +0100

#1582158 — [PATCH 3.16 191/306] netfilter: nf_tables: destroy the set if fail to add transaction

3.16.40-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Liping Zhang <zlpnobody@gmail.com>

commit c17c3cdff10b9f59ef1244a14604f10949f17117 upstream.

When the memory is exhausted, then we will fail to add the NFT_MSG_NEWSET
transaction. In such case, we should destroy the set before we free it.

Fixes: 958bee14d071 ("netfilter: nf_tables: use new transaction infrastructure to handle sets")
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
 net/netfilter/nf_tables_api.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -2642,12 +2642,14 @@ static int nf_tables_newset(struct sock
 
 	err = nft_trans_set_add(&ctx, NFT_MSG_NEWSET, set);
 	if (err < 0)
-		goto err2;
+		goto err3;
 
 	list_add_tail_rcu(&set->list, &table->sets);
 	table->use++;
 	return 0;
 
+err3:
+	ops->destroy(set);
 err2:
 	kfree(set);
 err1:

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