From 4674c7dc07aaf61a3fc0385826e1787671060f2d Mon Sep 17 00:00:00 2001 From: Fabian Meumertzheim Date: Tue, 18 Nov 2025 02:11:25 -0800 Subject: [PATCH] [8.8.0] Fix NPE with remote repo contents cache I haven't been able to reproduce this in a test, but this should fix the following crash observed while running `bazel info`: ``` FATAL: bazel crashed due to an internal error. Printing stack trace: java.lang.NullPointerException: Cannot invoke "java.util.concurrent.ExecutorService.shutdownNow()" because "this.materializationExecutor" is null at com.google.devtools.build.lib.remote.RemoteExternalOverlayFileSystem.afterCommand(RemoteExternalOverlayFileSystem.java:145) at com.google.devtools.build.lib.remote.RemoteModule.afterCommand(RemoteModule.java:1034) at com.google.devtools.build.lib.runtime.BlazeRuntime.afterCommand(BlazeRuntime.java:787) at com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.execExclusively(BlazeCommandDispatcher.java:807) at com.google.devtools.build.lib.runtime.BlazeCommandDispatcher.exec(BlazeCommandDispatcher.java:266) at com.google.devtools.build.lib.server.GrpcServerImpl.executeCommand(GrpcServerImpl.java:608) at com.google.devtools.build.lib.server.GrpcServerImpl.lambda$run$0(GrpcServerImpl.java:679) at io.grpc.Context$1.run(Context.java:566) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.base/java.lang.Thread.run(Unknown Source) ``` Closes #27690. PiperOrigin-RevId: 833722608 Change-Id: I88c485a01e5967657ec3b5529a47639b743b18e6 (cherry picked from commit a7d0e91dce87cde6f9bd8c1e0139db2cd07df4d9) --- .../build/lib/remote/RemoteExternalOverlayFileSystem.java | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/src/main/java/com/google/devtools/build/lib/remote/RemoteExternalOverlayFileSystem.java b/src/main/java/com/google/devtools/build/lib/remote/RemoteExternalOverlayFileSystem.java index 89c7b61f75b256..3425f500a697e6 100644 --- a/src/main/java/com/google/devtools/build/lib/remote/RemoteExternalOverlayFileSystem.java +++ b/src/main/java/com/google/devtools/build/lib/remote/RemoteExternalOverlayFileSystem.java @@ -145,6 +145,11 @@ public void beforeCommand( } public void afterCommand() { + if (cache == null) { + // Not all commands cause beforeCommand to be called, but afterCommand is called + // unconditionally. + return; + } this.cache = null; this.inputPrefetcher = null; this.reporter = null;