1 files changed, 11 insertions, 1 deletions
diff --git a/src/share/vm/runtime/sweeper.cpp b/src/share/vm/runtime/sweeper.cpp
index 4eba81deb..b4954ff86 100644
--- a/src/share/vm/runtime/sweeper.cpp
+++ b/src/share/vm/runtime/sweeper.cpp
@@ -538,10 +538,14 @@ int NMethodSweeper::process_nmethod(nmethod *nm) {
   } else if (nm->is_not_entrant()) {
     // If there are no current activations of this method on the
     // stack we can safely convert it to a zombie method
-    if (nm->can_not_entrant_be_converted()) {
+    if (nm->can_convert_to_zombie()) {
       if (PrintMethodFlushing && Verbose) {
         tty->print_cr("### Nmethod %3d/" PTR_FORMAT " (not entrant) being made zombie", nm->compile_id(), nm);
       }
+      // Clear ICStubs to prevent back patching stubs of zombie or unloaded
+      // nmethods during the next safepoint (see ICStub::finalize).
+      MutexLocker cl(CompiledIC_lock);
+      nm->clear_ic_stubs();
       // Code cache state change is tracked in make_zombie()
       nm->make_zombie();
       _zombified_count++;
@@ -567,6 +571,12 @@ int NMethodSweeper::process_nmethod(nmethod *nm) {
       release_nmethod(nm);
       _flushed_count++;
     } else {
+      {
+        // Clean ICs of unloaded nmethods as well because they may reference other
+        // unloaded nmethods that may be flushed earlier in the sweeper cycle.
+        MutexLocker cl(CompiledIC_lock);
+        nm->cleanup_inline_caches();
+      }
       // Code cache state change is tracked in make_zombie()
       nm->make_zombie();
       _zombified_count++;