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netfilter: nft_last: copy content when cloning expression 

[ Upstream commit 860e874290 ]

If the ruleset contains last timestamps, restore them accordingly.
Otherwise, listing after restoration shows never used items.

Fixes: 33a24de37e ("netfilter: nft_last: move stateful fields out of expression data")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Pablo Neira Ayuso 2023-02-28 17:09:03 +01:00 committed by Greg Kroah-Hartman
parent 5d241eb8a1
commit 227a7266fc
1 changed files with 4 additions and 0 deletions
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4
net/netfilter/nft_last.c
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@ -104,11 +104,15 @@ static void nft_last_destroy(const struct nft_ctx *ctx,
static int nft_last_clone(struct nft_expr *dst, const struct nft_expr *src)
{
struct nft_last_priv *priv_dst = nft_expr_priv(dst);
struct nft_last_priv *priv_src = nft_expr_priv(src);
priv_dst->last = kzalloc(sizeof(*priv_dst->last), GFP_ATOMIC);
if (!priv_dst->last)
return -ENOMEM;
priv_dst->last->set = priv_src->last->set;
priv_dst->last->jiffies = priv_src->last->jiffies;
return 0;
}