From: Pablo Neira Ayuso Date: Thu, 20 Jul 2023 07:17:21 +0000 (+0200) Subject: netfilter: nf_tables: skip bound chain on rule flush X-Git-Tag: v6.6.7~2331^2~1^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8;p=platform%2Fkernel%2Flinux-starfive.git netfilter: nf_tables: skip bound chain on rule flush Skip bound chain when flushing table rules, the rule that owns this chain releases these objects. Otherwise, the following warning is triggered: WARNING: CPU: 2 PID: 1217 at net/netfilter/nf_tables_api.c:2013 nf_tables_chain_destroy+0x1f7/0x210 [nf_tables] CPU: 2 PID: 1217 Comm: chain-flush Not tainted 6.1.39 #1 RIP: 0010:nf_tables_chain_destroy+0x1f7/0x210 [nf_tables] Fixes: d0e2c7de92c7 ("netfilter: nf_tables: add NFT_CHAIN_BINDING") Reported-by: Kevin Rich Signed-off-by: Pablo Neira Ayuso Signed-off-by: Florian Westphal --- diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 40bff6e..b9a4d3f 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -4087,6 +4087,8 @@ static int nf_tables_delrule(struct sk_buff *skb, const struct nfnl_info *info, list_for_each_entry(chain, &table->chains, list) { if (!nft_is_active_next(net, chain)) continue; + if (nft_chain_is_bound(chain)) + continue; ctx.chain = chain; err = nft_delrule_by_chain(&ctx);