From d1b5b80da7058883758df2b5b7f506d4d4f9a5fa Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Mon, 5 Jul 2021 20:14:21 +0200 Subject: [PATCH] netfilter: nft_last: incorrect arithmetics when restoring last used Subtract the jiffies that have passed by to current jiffies to fix last used restoration. Fixes: 836382dc2471 ("netfilter: nf_tables: add last expression") Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nft_last.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nft_last.c b/net/netfilter/nft_last.c index bbb352b..8088b99 100644 --- a/net/netfilter/nft_last.c +++ b/net/netfilter/nft_last.c @@ -37,7 +37,7 @@ static int nft_last_init(const struct nft_ctx *ctx, const struct nft_expr *expr, if (err < 0) return err; - priv->last_jiffies = jiffies + (unsigned long)last_jiffies; + priv->last_jiffies = jiffies - (unsigned long)last_jiffies; } return 0; -- 2.7.4