core: fix race condition in idleTimer & ManagedChannel#enterIdle

PR for Spikhalskiy/grpc-java@6d260b8 Hot fix of #8714
grpc · Dec 16, 2021 · 736b398 · 736b398
1 parent d50b704
commit 736b398
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/core/src/main/java/io/grpc/internal/ManagedChannelImpl.java b/core/src/main/java/io/grpc/internal/ManagedChannelImpl.java
@@ -349,6 +349,9 @@ private class IdleModeTimer implements Runnable {
 
     @Override
     public void run() {
+      if (lbHelper == null) {
+        return;
+      }
       enterIdleMode();
     }
   }