diff --git a/sys/kern/subr_witness.c b/sys/kern/subr_witness.c
--- a/sys/kern/subr_witness.c
+++ b/sys/kern/subr_witness.c
@@ -2136,6 +2136,15 @@
 		n += witness_list_locks(&lock_list, printf);
 	} else
 		sched_unpin();
+
+	if (!THREAD_CAN_SLEEP() && (flags & WARN_SLEEPOK)) {
+		va_start(ap, fmt);
+		vprintf(fmt, ap);
+		va_end(ap);
+		printf(" with %d sleep inhibitors.\n", td->td_no_sleeping);
+		n += td->td_no_sleeping;
+	}
+
 	if (flags & WARN_PANIC && n)
 		kassert_panic("%s", __func__);
 	else