Every first-time addition of an existing ls_stateful_record to the
crupdated tracking set must call ls_stateful_record_set_acls() to
refresh has_stateful_acl and related ACL state.  Two places were
missing this call:

1. The LB loop in ls_stateful_northd_handler() added to crupdated
   without calling set_acls().  When a switch had both changed LBs
   and changed ACLs, the LB loop added the record first (without
   refreshing ACL state), then the ACL loop's hmapx_add() returned
   false and skipped the refresh.

2. ls_stateful_acl_handler() added to crupdated without calling
   set_acls().  When an existing ACL's action changed (e.g., allow
   to allow-related), has_stateful_acl was never updated.

Fixes: fb477aff9286 ("northd: Process ACL changes incrementally.")
Assisted-by: Claude, with model: claude-opus-4-6
Signed-off-by: Dumitru Ceara <[email protected]>
---
 northd/en-ls-stateful.c | 21 +++++++++++--
 tests/ovn-northd.at     | 69 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 87 insertions(+), 3 deletions(-)

diff --git a/northd/en-ls-stateful.c b/northd/en-ls-stateful.c
index 4daeab20d7..84e58b5deb 100644
--- a/northd/en-ls-stateful.c
+++ b/northd/en-ls-stateful.c
@@ -171,8 +171,14 @@ ls_stateful_northd_handler(struct engine_node *node, void 
*data_)
         ovs_assert(ls_stateful_rec);
         ls_stateful_rec->has_lb_vip = ls_has_lb_vip(od);
 
-        /* Add the ls_stateful_rec to the tracking data. */
-        hmapx_add(&data->trk_data.crupdated, ls_stateful_rec);
+        /* Add the ls_stateful_rec to the tracking data.  Refresh ACL
+         * state when first added so that a switch with both changed LBs
+         * and changed ACLs gets its ACL state updated regardless of
+         * which loop runs first. */
+        if (hmapx_add(&data->trk_data.crupdated, ls_stateful_rec)) {
+            ls_stateful_record_set_acls(ls_stateful_rec, od->nbs,
+                                        input_data.ls_port_groups);
+        }
     }
 
     HMAPX_FOR_EACH (hmapx_node, &nd_changes->ls_with_changed_acls) {
@@ -243,6 +249,7 @@ ls_stateful_port_group_handler(struct engine_node *node, 
void *data_)
 enum engine_input_handler_result
 ls_stateful_acl_handler(struct engine_node *node, void *data_)
 {
+    struct ls_stateful_input input_data = ls_stateful_get_input_data(node);
     struct ed_type_ls_stateful *data = data_;
     const struct nbrec_acl_table *nbrec_acl_table =
         EN_OVSDB_GET(engine_get_input("NB_acl", node));
@@ -259,7 +266,15 @@ ls_stateful_acl_handler(struct engine_node *node, void 
*data_)
         LS_STATEFUL_TABLE_FOR_EACH (ls_stateful_rec, &data->table) {
             if (uuidset_contains(&ls_stateful_rec->related_acls,
                                  &acl->header_.uuid)) {
-                hmapx_add(&data->trk_data.crupdated, ls_stateful_rec);
+                if (hmapx_add(&data->trk_data.crupdated, ls_stateful_rec)) {
+                    const struct ovn_datapath *od = ovn_datapath_find(
+                        &input_data.ls_datapaths->datapaths,
+                        &ls_stateful_rec->nbs_uuid);
+                    if (od) {
+                        ls_stateful_record_set_acls(ls_stateful_rec, od->nbs,
+                                                    input_data.ls_port_groups);
+                    }
+                }
             }
         }
     }
diff --git a/tests/ovn-northd.at b/tests/ovn-northd.at
index 624e08c1df..796c30daf7 100644
--- a/tests/ovn-northd.at
+++ b/tests/ovn-northd.at
@@ -18957,6 +18957,75 @@ OVN_CLEANUP_NORTHD
 AT_CLEANUP
 ])
 
+OVN_FOR_EACH_NORTHD_NO_HV([
+AT_SETUP([LS ls_stateful incremental processing])
+AT_KEYWORDS([incremental processing])
+ovn_start
+
+AS_BOX([LB and ACL added in same transaction])
+
+dnl Create a switch with a port.
+check ovn-nbctl --wait=sb \
+    -- ls-add ls0 \
+    -- lsp-add ls0 lsp0 \
+    -- lsp-set-addresses lsp0 "00:00:00:00:00:01 10.0.0.1"
+
+dnl Clear engine stats before the combined transaction.
+check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
+
+dnl In a single transaction, add both a stateful ACL and a load balancer.
+dnl This exercises the ls_stateful_northd_handler() LB loop path where
+dnl the switch is added to crupdated tracking and must also refresh ACL
+dnl state via ls_stateful_record_set_acls().
+check ovn-nbctl --wait=sb \
+    -- acl-add ls0 from-lport 100 "ip" allow-related \
+    -- lb-add lb1 10.0.0.100:80 10.0.0.1:80 \
+    -- ls-lb-add ls0 lb1
+
+dnl Verify incremental processing was used (no recompute).
+check_engine_stats ls_stateful norecompute compute
+
+dnl Verify the conntrack defrag flow exists in pre_acl at priority 100.
+dnl REGBIT_CONNTRACK_DEFRAG (reg0[0] = 1) is only set when
+dnl has_stateful_acl is true, proving ls_stateful_record_set_acls()
+dnl was called during the combined LB+ACL transaction.
+ovn-sbctl dump-flows ls0 > lflows
+AT_CHECK([grep 'ls_in_pre_acl' lflows | grep 'priority=100' | grep -q 
'reg0\[[0\]] = 1'])
+
+AS_BOX([ACL action change from allow to allow-related])
+
+dnl Create a switch with a non-stateful ACL (allow) and a port.
+check ovn-nbctl --wait=sb \
+    -- ls-add ls1 \
+    -- lsp-add ls1 lsp1 \
+    -- lsp-set-addresses lsp1 "00:00:00:00:00:02 10.0.0.2" \
+    -- acl-add ls1 from-lport 100 "ip" allow
+
+dnl Verify NO conntrack defrag flow (non-stateful ACL).
+ovn-sbctl dump-flows ls1 > lflows
+AT_CHECK([grep 'ls_in_pre_acl' lflows | grep 'priority=100' | grep -q 
'reg0\[[0\]] = 1'], [1])
+
+dnl Clear engine stats before modifying the ACL.
+check as northd ovn-appctl -t ovn-northd inc-engine/clear-stats
+
+dnl Change the ACL action from allow to allow-related.
+dnl This exercises ls_stateful_acl_handler() where a changed ACL must
+dnl trigger ls_stateful_record_set_acls() to update has_stateful_acl.
+acl_uuid=$(fetch_column nb:Acl _uuid action=allow)
+check ovn-nbctl --wait=sb set acl $acl_uuid action=allow-related
+
+dnl Verify incremental processing was used (no recompute).
+check_engine_stats ls_stateful norecompute compute
+
+dnl Verify the conntrack defrag flow now appears, proving
+dnl has_stateful_acl was correctly updated.
+ovn-sbctl dump-flows ls1 > lflows
+AT_CHECK([grep 'ls_in_pre_acl' lflows | grep 'priority=100' | grep -q 
'reg0\[[0\]] = 1'])
+
+OVN_CLEANUP_NORTHD
+AT_CLEANUP
+])
+
 OVN_FOR_EACH_NORTHD_NO_HV([
 AT_SETUP([Check network function])
 ovn_start
-- 
2.53.0

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