diff --git a/services/core/java/com/android/server/am/ProcessList.java b/services/core/java/com/android/server/am/ProcessList.java
index 62e703bb0836b..7c73ebd365ffd 100644
--- a/services/core/java/com/android/server/am/ProcessList.java
+++ b/services/core/java/com/android/server/am/ProcessList.java
@@ -1574,8 +1574,15 @@ public final class ProcessList {
             gidList.add(userGid);
         }
         if (mountExternal == Zygote.MOUNT_EXTERNAL_ANDROID_WRITABLE) {
+            // For DownloadProviders and MTP: To grant access to /sdcard/Android/
             gidList.add(Process.SDCARD_RW_GID);
         }
+        if (mountExternal == Zygote.MOUNT_EXTERNAL_PASS_THROUGH) {
+            // For the FUSE daemon: To grant access to the lower filesystem.
+            // EmulatedVolumes: /data/media and /mnt/expand/<volume>/data/media
+            // PublicVolumes: /mnt/media_rw/<volume>
+            gidList.add(Process.MEDIA_RW_GID);
+        }
         if (packageName.equals("com.android.externalstorage")) {
             // Allows access to 'unreliable' (USB OTG) volumes via SAF
             gidList.add(Process.MEDIA_RW_GID);