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21:27, Greg Kroah-Hartman wrote: > 5.15-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Pablo Neira Ayuso > > [ Upstream commit 3db5647984de03d9cae0dcddb509b058351f0ee4 ] > > Skip expectations that do not reside in this netns. > > Similar to e77e6ff502ea ("netfilter: conntrack: do not dump other netns's > conntrack entries via proc"). > AI assisted review spotted a probable issue: I have gone through the analysis and the summary is: I think this fix relies on commit: 02a3231b6d82 ("netfilter: nf_conntrack_expect: store netns and zone in expectation") This references commit explicitly states: " This patch is required by the follow up fix not to dump expectations that do not belong to this netns." which is this patch. Also part of patch series 4 and 5: https://lore.kernel.org/all/20260320125947.305117-5-pablo@netfilter.org/ Given that we haven't taken 02a3231b6d82 ("netfilter: nf_conntrack_expect: store netns and zone in expectation") to 5.15.y should we drop this ? Why ? Without it, the 5.15 backport still uses master-conntrack-derived context instead of expectation-owned stored netns/zone state i.e Upstream has: possible_net_t net; static inline struct net *nf_ct_exp_net(struct nf_conntrack_expect *exp) { return read_pnet(&exp->net); } Downstream has: static inline struct net *nf_ct_exp_net(struct nf_conntrack_expect *exp) { return nf_ct_net(exp->master); } I don't know the internals of this fully, but looks like we might not want to take this fix without 02a3231b6d82 ("netfilter: nf_conntrack_expect: store netns and zone in expectation") Thanks, Harshit > Fixes: 9b03f38d0487 ("netfilter: netns nf_conntrack: per-netns expectations") > Signed-off-by: Florian Westphal > Signed-off-by: Pablo Neira Ayuso > Signed-off-by: Sasha Levin > --- > net/netfilter/nf_conntrack_expect.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c > index 6d056ebba57c6..10d4dfbdde226 100644 > --- a/net/netfilter/nf_conntrack_expect.c > +++ b/net/netfilter/nf_conntrack_expect.c > @@ -627,11 +627,15 @@ static int exp_seq_show(struct seq_file *s, void *v) > { > struct nf_conntrack_expect *expect; > struct nf_conntrack_helper *helper; > + struct net *net = seq_file_net(s); > struct hlist_node *n = v; > char *delim = ""; > > expect = hlist_entry(n, struct nf_conntrack_expect, hnode); > > + if (!net_eq(nf_ct_exp_net(expect), net)) > + return 0; > + > if (expect->timeout.function) > seq_printf(s, "%ld ", timer_pending(&expect->timeout) > ? (long)(expect->timeout.expires - jiffies)/HZ : 0);