--- a/src/jdk.incubator.jpackage/macosx/classes/jdk/incubator/jpackage/internal/MacDmgBundler.java	Fri Jul 24 13:49:38 2020 -0700
+++ b/src/jdk.incubator.jpackage/macosx/classes/jdk/incubator/jpackage/internal/MacDmgBundler.java	Fri Jul 24 16:46:18 2020 -0700
@@ -359,7 +359,7 @@
                 protoDMG.toAbsolutePath().toString(),
                 hdiUtilVerbosityFlag,
                 "-mountroot", imagesRoot.toAbsolutePath().toString());
-        IOUtils.exec(pb, false, null, true);
+        IOUtils.exec(pb, false, null, true, Executor.INFINITE_TIMEOUT);
 
         Path mountedRoot = imagesRoot.resolve(APP_NAME.fetchFrom(params));
 
@@ -392,7 +392,7 @@
             try {
                 pb = new ProcessBuilder("osascript",
                         getConfig_VolumeScript(params).toAbsolutePath().toString());
-                IOUtils.exec(pb);
+                IOUtils.exec(pb, 180); // Wait 3 minutes. See JDK-8248248.
             } catch (IOException ex) {
                 Log.verbose(ex);
             }

--- a/src/jdk.incubator.jpackage/share/classes/jdk/incubator/jpackage/internal/Executor.java	Fri Jul 24 13:49:38 2020 -0700
+++ b/src/jdk.incubator.jpackage/share/classes/jdk/incubator/jpackage/internal/Executor.java	Fri Jul 24 16:46:18 2020 -0700
@@ -30,6 +30,7 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
@@ -55,6 +56,16 @@
         return this;
     }
 
+    Executor setTimeout(long v) {
+        timeout = v;
+        if (timeout != INFINITE_TIMEOUT) {
+            // Redirect output to file if timeout is requested, otherwise we will
+            // reading until process ends and timeout will never be reached.
+            setWriteOutputToFile(true);
+        }
+        return this;
+    }
+
     Executor setProcessBuilder(ProcessBuilder v) {
         pb = v;
         return this;
@@ -103,7 +114,7 @@
         int code = 0;
         if (writeOutputToFile) {
             try {
-                code = p.waitFor();
+                code = waitForProcess(p);
             } catch (InterruptedException ex) {
                 Log.verbose(ex);
                 throw new RuntimeException(ex);
@@ -184,6 +195,21 @@
         }
     }
 
+    private int waitForProcess(Process p) throws InterruptedException {
+        if (timeout == INFINITE_TIMEOUT) {
+            return p.waitFor();
+        } else {
+            if (p.waitFor(timeout, TimeUnit.SECONDS)) {
+                return p.exitValue();
+            } else {
+                Log.verbose(String.format("Command %s timeout after %d seconds",
+                            createLogMessage(pb), timeout));
+                p.destroy();
+                return -1;
+            }
+        }
+    }
+
     static Executor of(String... cmdline) {
         return new Executor().setCommandLine(cmdline);
     }
@@ -201,9 +227,12 @@
         return sb.toString();
     }
 
+    public final static int INFINITE_TIMEOUT = -1;
+
     private ProcessBuilder pb;
     private boolean saveOutput;
     private boolean writeOutputToFile;
+    private long timeout = INFINITE_TIMEOUT;
     private List<String> output;
     private Consumer<Stream<String>> outputConsumer;
 }

--- a/src/jdk.incubator.jpackage/share/classes/jdk/incubator/jpackage/internal/IOUtils.java	Fri Jul 24 13:49:38 2020 -0700
+++ b/src/jdk.incubator.jpackage/share/classes/jdk/incubator/jpackage/internal/IOUtils.java	Fri Jul 24 16:46:18 2020 -0700
@@ -148,7 +148,13 @@
 
     public static void exec(ProcessBuilder pb)
             throws IOException {
-        exec(pb, false, null, false);
+        exec(pb, false, null, false, Executor.INFINITE_TIMEOUT);
+    }
+
+    // timeout in seconds. -1 will be return if process timeouts.
+    public static void exec(ProcessBuilder pb, long timeout)
+            throws IOException {
+        exec(pb, false, null, false, timeout);
     }
 
     // See JDK-8236282
@@ -158,19 +164,20 @@
     // read this file back.
     public static void exec(ProcessBuilder pb, boolean writeOutputToFile)
             throws IOException {
-        exec(pb, false, null, writeOutputToFile);
+        exec(pb, false, null, writeOutputToFile, Executor.INFINITE_TIMEOUT);
     }
 
     static void exec(ProcessBuilder pb, boolean testForPresenceOnly,
             PrintStream consumer) throws IOException {
-        exec(pb, testForPresenceOnly, consumer, false);
+        exec(pb, testForPresenceOnly, consumer, false, Executor.INFINITE_TIMEOUT);
     }
 
     static void exec(ProcessBuilder pb, boolean testForPresenceOnly,
-            PrintStream consumer, boolean writeOutputToFile) throws IOException {
+            PrintStream consumer, boolean writeOutputToFile, long timeout)
+            throws IOException {
         List<String> output = new ArrayList<>();
         Executor exec = Executor.of(pb).setWriteOutputToFile(writeOutputToFile)
-                .setOutputConsumer(lines -> {
+                .setTimeout(timeout).setOutputConsumer(lines -> {
             lines.forEach(output::add);
             if (consumer != null) {
                 output.forEach(consumer::println);

--- a/test/jdk/ProblemList.txt	Fri Jul 24 13:49:38 2020 -0700
+++ b/test/jdk/ProblemList.txt	Fri Jul 24 16:46:18 2020 -0700
@@ -928,6 +928,5 @@
 # jdk_jpackage
 
 tools/jpackage/share/jdk/jpackage/tests/ModulePathTest3.java#id0    8248418 generic-all
-tools/jpackage/share/EmptyFolderPackageTest.java                    8249201 macosx-all
 
 ############################################################################