From: Pablo Neira Ayuso pablo@netfilter.org
stable inclusion from stable-v5.10.188 commit 30e5460d69e631c0e84db37dba2d8f98648778d4 bugzilla: https://gitee.com/openeuler/kernel/issues/I86JB6
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8 ]
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 kevinrich1337@gmail.com Signed-off-by: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Lu Wei luwei32@huawei.com --- net/netfilter/nf_tables_api.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 860a9970fbae..461c0184b9e8 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -3607,6 +3607,8 @@ static int nf_tables_delrule(struct net *net, struct sock *nlsk, 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);