(tomcat) branch 11.0.x updated: Fix potential concurrency issue

[ma...@apache.org]

This is an automated email from the ASF dual-hosted git repository.

markt-asf pushed a commit to branch 11.0.x
in repository https://gitbox.apache.org/repos/asf/tomcat.git


The following commit(s) were added to refs/heads/11.0.x by this push:
     new 4150f4356a Fix potential concurrency issue
4150f4356a is described below

commit 4150f4356a0c58c7fa5174186488c12a45869e8d
Author: Mark Thomas <ma...@apache.org>
AuthorDate: Wed Jun 24 18:35:49 2026 +0100

    Fix potential concurrency issue
---
 java/org/apache/catalina/ha/deploy/FileMessageFactory.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/java/org/apache/catalina/ha/deploy/FileMessageFactory.java b/java/org/apache/catalina/ha/deploy/FileMessageFactory.java
index 4c49bfac29..68e9596e6f 100644
--- a/java/org/apache/catalina/ha/deploy/FileMessageFactory.java
+++ b/java/org/apache/catalina/ha/deploy/FileMessageFactory.java
@@ -207,7 +207,7 @@ public class FileMessageFactory {
      *
      * @return returns true if the file is complete and outputstream is closed, false otherwise.
      */
-    public boolean writeMessage(FileMessage msg) throws IllegalArgumentException, IOException {
+    public synchronized boolean writeMessage(FileMessage msg) throws IllegalArgumentException, IOException {
         if (!openForWrite) {
             throw new IllegalArgumentException(sm.getString("fileMessageFactory.cannotWrite"));
         }


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