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Mon, 04 May 2026 22:12:40 -0700 (PDT) Received: from alchemy-Precision-3630-Tower.tail7db246.ts.net ([156.146.97.67]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2b9cae0e5fasm120896855ad.54.2026.05.04.22.12.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 May 2026 22:12:40 -0700 (PDT) From: Pratham Gupta To: netfilter-devel@vger.kernel.org Cc: pablo@netfilter.org, fw@strlen.de, phil@nwl.cc, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, coreteam@netfilter.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Pratham Gupta Subject: [PATCH net] netfilter: ctnetlink: use nf_ct_exp_net() in expectation dump Date: Mon, 4 May 2026 22:11:57 -0700 Message-ID: <20260505051157.3895177-1-pratham36gupta@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Commit 02a3231b6d82 ("netfilter: nf_conntrack_expect: store netns and zone in expectation") introduced exp->net so RCU-only expectation paths no longer need to dereference exp->master for netns lookups. Commit 3db5647984de ("netfilter: nf_conntrack_expect: skip expectations in other netns via proc") updated the proc path accordingly, but ctnetlink_exp_dump_table() still compares against nf_ct_net(exp->master). Use nf_ct_exp_net(exp) here as well so the netlink dump path matches the rest of the March 2026 expectation netns/RCU cleanup. Fixes: 02a3231b6d82 ("netfilter: nf_conntrack_expect: store netns and zone in expectation") Cc: stable@vger.kernel.org Signed-off-by: Pratham Gupta --- Tested expectation create/dump/delete on the host and in fresh Ubuntu 24.04 Docker userspace. Concurrent namespace churn/dump testing did not reproduce a cross-netns leak. net/netfilter/nf_conntrack_netlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nf_conntrack_netlink.c b/net/netfilter/nf_conntrack_netlink.c index eda5fe4a75c8..8ae3f6acc2d2 100644 --- a/net/netfilter/nf_conntrack_netlink.c +++ b/net/netfilter/nf_conntrack_netlink.c @@ -3158,7 +3158,7 @@ ctnetlink_exp_dump_table(struct sk_buff *skb, struct netlink_callback *cb) if (l3proto && exp->tuple.src.l3num != l3proto) continue; - if (!net_eq(nf_ct_net(exp->master), net)) + if (!net_eq(nf_ct_exp_net(exp), net)) continue; if (cb->args[1]) { -- 2.43.0