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-rw-r--r--src/vlib/node_funcs.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vlib/node_funcs.h b/src/vlib/node_funcs.h
index 0059b9bec9e..3ae4e541a68 100644
--- a/src/vlib/node_funcs.h
+++ b/src/vlib/node_funcs.h
@@ -851,6 +851,9 @@ vlib_process_signal_event_data (vlib_main_t * vm,
vlib_process_t *p = vec_elt (nm->processes, n->runtime_index);
uword *h, t;
+ /* Must be in main thread */
+ ASSERT (vlib_get_thread_index () == 0);
+
h = hash_get (p->event_type_index_by_type_opaque, type_opaque);
if (!h)
{