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Date:   Thu,  9 Jan 2020 00:17:06 +0100
From:   Pablo Neira Ayuso <>
Subject: [PATCH 2/9] netfilter: nft_flow_offload: fix underflow in flowtable reference counter

From: wenxu <>

The .deactivate and .activate interfaces already deal with the reference
counter. Otherwise, this results in spurious "Device is busy" errors.

Fixes: a3c90f7a2323 ("netfilter: nf_tables: flow offload expression")
Signed-off-by: wenxu <>
Signed-off-by: Pablo Neira Ayuso <>
 net/netfilter/nft_flow_offload.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/netfilter/nft_flow_offload.c b/net/netfilter/nft_flow_offload.c
index dd82ff2ee19f..b70b48996801 100644
--- a/net/netfilter/nft_flow_offload.c
+++ b/net/netfilter/nft_flow_offload.c
@@ -200,9 +200,6 @@ static void nft_flow_offload_activate(const struct nft_ctx *ctx,
 static void nft_flow_offload_destroy(const struct nft_ctx *ctx,
 				     const struct nft_expr *expr)
-	struct nft_flow_offload *priv = nft_expr_priv(expr);
-	priv->flowtable->use--;
 	nf_ct_netns_put(ctx->net, ctx->family);

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