@@ -2619,19 +2619,6 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
}
}
- if (nla[NFTA_CHAIN_COUNTERS]) {
- if (!nft_is_base_chain(chain)) {
- err = -EOPNOTSUPP;
- goto err_hooks;
- }
-
- stats = nft_stats_alloc(nla[NFTA_CHAIN_COUNTERS]);
- if (IS_ERR(stats)) {
- err = PTR_ERR(stats);
- goto err_hooks;
- }
- }
-
if (!(table->flags & NFT_TABLE_F_DORMANT) &&
nft_is_base_chain(chain) &&
!list_empty(&hook.list)) {
@@ -2646,6 +2633,20 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
}
unregister = true;
+
+ if (nla[NFTA_CHAIN_COUNTERS]) {
+ if (!nft_is_base_chain(chain)) {
+ err = -EOPNOTSUPP;
+ goto err_hooks;
+ }
+
+ stats = nft_stats_alloc(nla[NFTA_CHAIN_COUNTERS]);
+ if (IS_ERR(stats)) {
+ err = PTR_ERR(stats);
+ goto err_hooks;
+ }
+ }
+
err = -ENOMEM;
trans = nft_trans_alloc(ctx, NFT_MSG_NEWCHAIN,
sizeof(struct nft_trans_chain));
If nft_netdev_register_hooks() fails, the memory associated with nft_stats is not freed, causing a memory leak. This patch fixes it by moving nft_stats_alloc() down after nft_netdev_register_hooks() succeeds. Fixes: b9703ed44ffb ("netfilter: nf_tables: support for adding new devices to an existing netdev chain") Signed-off-by: Quan Tian <tianquan23@gmail.com> --- net/netfilter/nf_tables_api.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-)