netfilter: nf_conntrack: Support expectations in different zones

commit 4b31814d20cbe5cd4ccf18089751e77a04afe4f2 upstream.

When zones were originally introduced, the expectation functions were
all extended to perform lookup using the zone. However, insertion was
not modified to check the zone. This means that two expectations which
are intended to apply for different connections that have the same tuple
but exist in different zones cannot both be tracked.

Fixes: 5d0aa2ccd4 (netfilter: nf_conntrack: add support for "conntrack zones")
Signed-off-by: Joe Stringer <joestringer@nicira.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c
index c63b618cd619eb01d0fe99413162a84edd09ac3c..95578da760d51a2e3da22178bbf9c1b255c1ff66 100644 (file)
--- a/net/netfilter/nf_conntrack_expect.c
+++ b/net/netfilter/nf_conntrack_expect.c
@@ -202,7 +202,8 @@ static inline int expect_clash(const struct nf_conntrack_expect *a,
                        a->mask.src.u3.all[count] & b->mask.src.u3.all[count];
        }
 
-       return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask);
+       return nf_ct_tuple_mask_cmp(&a->tuple, &b->tuple, &intersect_mask) &&
+              nf_ct_zone(a->master) == nf_ct_zone(b->master);
 }
 
 static inline int expect_matches(const struct nf_conntrack_expect *a,