This crash is a regression introduced by JDK-8364343.
The suggested fix is:

diff --git a/src/hotspot/share/runtime/mountUnmountDisabler.cpp b/src/hotspot/share/runtime/mountUnmountDisabler.cpp
index 5bf00323f10..261bbfb9c18 100644
--- a/src/hotspot/share/runtime/mountUnmountDisabler.cpp
+++ b/src/hotspot/share/runtime/mountUnmountDisabler.cpp
@@ -367,7 +367,7 @@ MountUnmountDisabler::enable_transition_for_all() {
   OrderAccess::release();
 
   MonitorLocker ml(VThreadTransition_lock);
- if (exclusive_operation_ongoing()) {
+ if (_is_exclusive) {
     set_exclusive_operation_ongoing(false);
   }
   dec_active_disablers();