[PATCH 6.8 044/158] netfilter: nf_tables: missing iterator type in lookup walk

Greg Kroah-Hartman
2024-04-23T21:41:16Z

From: Pablo Neira Ayuso <pablo@netfilter.org>

[ Upstream commit efefd4f00c967d00ad7abe092554ffbb70c1a793 ]

Add missing decorator type to lookup expression and tighten WARN_ON_ONCE
check in pipapo to spot earlier that this is unset.

Fixes: 29b359cf6d95 ("netfilter: nft_set_pipapo: walk over current view on netlink dump")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/netfilter/nft_lookup.c | 1 +
net/netfilter/nft_set_pipapo.c | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/net/netfilter/nft_lookup.c b/net/netfilter/nft_lookup.c
index 870e5b113d13e..87c18eddb0689 100644
--- a/net/netfilter/nft_lookup.c
+++ b/net/netfilter/nft_lookup.c
@@ -216,6 +216,7 @@ static int nft_lookup_validate(const struct nft_ctx *ctx,
return 0;

iter.genmask = nft_genmask_next(ctx->net);
+ iter.type = NFT_ITER_UPDATE;
iter.skip = 0;
iter.count = 0;
iter.err = 0;
diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index 979b5e80c400b..c91efad49c6d5 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -2048,7 +2048,8 @@ static void nft_pipapo_walk(const struct nft_ctx *ctx, struct nft_set *set,
const struct nft_pipapo_field *f;
int i, r;

- WARN_ON_ONCE(iter->type == NFT_ITER_UNSPEC);
+ WARN_ON_ONCE(iter->type != NFT_ITER_READ &&
+ iter->type != NFT_ITER_UPDATE);

rcu_read_lock();
if (iter->type == NFT_ITER_READ)
--
2.43.0