diff -r 4eebb9aadbe3 -r 408c445d04e8 src/hotspot/share/aot/aotCompiledMethod.cpp
--- a/src/hotspot/share/aot/aotCompiledMethod.cpp	Thu Sep 19 09:50:11 2019 +0200
+++ b/src/hotspot/share/aot/aotCompiledMethod.cpp	Thu Sep 19 10:52:22 2019 +0200
@@ -165,7 +165,7 @@
 
   {
     // Enter critical section.  Does not block for safepoint.
-    MutexLocker pl(Patching_lock, Mutex::_no_safepoint_check_flag);
+    MutexLocker pl(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
 
     if (*_state_adr == new_state) {
       // another thread already performed this transition so nothing
@@ -188,12 +188,10 @@
 #endif
 
     // Remove AOTCompiledMethod from method.
-    if (method() != NULL && (method()->code() == this ||
-                             method()->from_compiled_entry() == verified_entry_point())) {
-      HandleMark hm;
-      method()->clear_code(false /* already owns Patching_lock */);
+    if (method() != NULL) {
+      method()->unlink_code(this);
     }
-  } // leave critical region under Patching_lock
+  } // leave critical region under CompiledMethod_lock
 
 
   if (TraceCreateZombies) {
@@ -208,7 +206,6 @@
 #ifdef TIERED
 bool AOTCompiledMethod::make_entrant() {
   assert(!method()->is_old(), "reviving evolved method!");
-  assert(*_state_adr != not_entrant, "%s", method()->has_aot_code() ? "has_aot_code() not cleared" : "caller didn't check has_aot_code()");
 
   // Make sure the method is not flushed in case of a safepoint in code below.
   methodHandle the_method(method());
@@ -216,9 +213,9 @@
 
   {
     // Enter critical section.  Does not block for safepoint.
-    MutexLocker pl(Patching_lock, Mutex::_no_safepoint_check_flag);
+    MutexLocker pl(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
 
-    if (*_state_adr == in_use) {
+    if (*_state_adr == in_use || *_state_adr == not_entrant) {
       // another thread already performed this transition so nothing
       // to do, but return false to indicate this.
       return false;
@@ -230,7 +227,7 @@
 
     // Log the transition once
     log_state_change();
-  } // leave critical region under Patching_lock
+  } // leave critical region under CompiledMethod_lock
 
 
   if (TraceCreateZombies) {