From e6155e3da38c20e9d3f1d1b7d3c84a7c82430f83 Mon Sep 17 00:00:00 2001
From: Alexander Dinauer <alexander.dinauer@sentry.io>
Date: Tue, 20 Jan 2026 10:12:16 +0100
Subject: [PATCH 1/2] Reject new logs if LoggerBatchProcessor is shutting down

---
 .../src/main/java/io/sentry/logger/LoggerBatchProcessor.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/sentry/src/main/java/io/sentry/logger/LoggerBatchProcessor.java b/sentry/src/main/java/io/sentry/logger/LoggerBatchProcessor.java
index 290087a641..1f9b8fe7ce 100644
--- a/sentry/src/main/java/io/sentry/logger/LoggerBatchProcessor.java
+++ b/sentry/src/main/java/io/sentry/logger/LoggerBatchProcessor.java
@@ -38,6 +38,7 @@ public class LoggerBatchProcessor implements ILoggerBatchProcessor {
   private volatile @Nullable Future<?> scheduledFlush;
   private final @NotNull AutoClosableReentrantLock scheduleLock = new AutoClosableReentrantLock();
   private volatile boolean hasScheduled = false;
+  private volatile boolean isShuttingDown = false;
 
   private final @NotNull ReusableCountLatch pendingCount = new ReusableCountLatch();
 
@@ -51,6 +52,9 @@ public LoggerBatchProcessor(
 
   @Override
   public void add(final @NotNull SentryLogEvent logEvent) {
+    if (isShuttingDown) {
+      return;
+    }
     if (pendingCount.getCount() >= MAX_QUEUE_SIZE) {
       options
           .getClientReportRecorder()
@@ -70,6 +74,7 @@ public void add(final @NotNull SentryLogEvent logEvent) {
   @SuppressWarnings("FutureReturnValueIgnored")
   @Override
   public void close(final boolean isRestarting) {
+    isShuttingDown = true;
     if (isRestarting) {
       maybeSchedule(true, true);
       executorService.submit(() -> executorService.close(options.getShutdownTimeoutMillis()));

From 757e4e848547e03104a90875eb16efd85c023e8e Mon Sep 17 00:00:00 2001
From: Alexander Dinauer <alexander.dinauer@sentry.io>
Date: Tue, 20 Jan 2026 14:06:34 +0100
Subject: [PATCH 2/2] changelog

---
 CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1aca5108ab..cec1e8c414 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,10 @@
 
 - Added `io.sentry.ndk.sdk-name` Android manifest option to configure the native SDK's name ([#5027](https://github.com/getsentry/sentry-java/pull/5027))
 
+### Fixes
+
+- Reject new logs if `LoggerBatchProcessor` is shutting down ([#5041](https://github.com/getsentry/sentry-java/pull/5041))
+
 ### Dependencies
 
 - Bump Native SDK from v0.12.2 to v0.12.3 ([#5012](https://github.com/getsentry/sentry-java/pull/5012))